Orolia 9183 NetClock/GPS Master Clock Instruction manual


Add to my manuals
246 Pages

advertisement

Orolia  9183 NetClock/GPS Master Clock  Instruction manual | Manualzz
MODEL 9183
NetClock/GPS Master Clock
INSTRUCTION MANUAL
95 Methodist Hill Drive
Suite 500
Rochester, NY 14623
Phone: 585.321.5800
Fax: 585.321.5219
www.spectracomcorp.com
Revisions, if any, are located at the end of the manual.
Part number 9183-5000-0050
Manual Revision J
October 2006
Current to software version 2.3.0 (refer to 2.3.1 Addendum)
Copyright © 2005 Spectracom Corporation. Contents of this publication may not be
reproduced in any form without the written permission of Spectracom Corporation. Printed in
USA.
Specifications subject to change or improvement without notice.
Spectracom, NetClock, TimeView and Legally Traceable Time are Spectracom registered
trademarks. All other products are identified by trademarks of their respective companies or
organizations. All rights reserved.
SPECTRACOM 5-YEAR WARRANTY
LIMITED WARRANTY
Spectracom warrants each new product manufactured and sold by it to be free from defects in software, material, workmanship,
and construction, except for batteries, fuses, or other material normally consumed in operation that may be contained therein
AND AS NOTED BELOW, for five years after shipment to the original purchaser (which period is referred to as the “warranty
period”). This warranty shall not apply if the product is used contrary to the instructions in its manual or is otherwise subjected
to misuse, abnormal operations, accident, lightning or transient surge, repairs or modifications not performed by Spectracom.
The GPS receiver is warranted for one year from date of shipment and subject to the exceptions listed above. The power adaptor,
if supplied, is warranted for one year from date of shipment and subject to the exceptions listed above.
THE ANALOG CLOCKS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE
EXCEPTIONS LISTED ABOVE.
THE TIMECODE READER/GENERATORS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND
SUBJECT TO THE EXCEPTIONS LISTED ABOVE.
The Rubidium oscillator, if supplied, is warranted for two years from date of shipment and subject to the exceptions listed above.
All other items and pieces of equipment not specified above, including the antenna unit, antenna surge suppressor and antenna
pre-amplifier are warranted for 5 years, subject to the exceptions listed above.
WARRANTY CLAIMS
Spectracom’s obligation under this warranty is limited to in-factory service and repair, at Spectracom’s option, of the product or
the component thereof, which is found to be defective. If in Spectracom’s judgment the defective condition in a Spectracom
product is for a cause listed above for which Spectracom is not responsible, Spectracom will make the repairs or replacement of
components and charge its then current price, which buyer agrees to pay.
Spectracom shall not have any warranty obligations if the procedure for warranty claims is not followed. Users must notify
Spectracom of the claim with full information as to the claimed defect. Spectracom products shall not be returned unless a return
authorization number is issued by Spectracom.
Spectracom products must be returned with the description of the claimed defect and identification of the individual to be
contacted if additional information is needed. Spectracom products must be returned properly packed with transportation charges
prepaid.
Shipping expense: Expenses incurred for shipping Spectracom products to and from Spectracom (including international
customs fees) shall be paid for by the customer, with the following exception. For customers located within the United States,
any product repaired by Spectracom under a “warranty repair” will be shipped back to the customer at Spectracom’s expense
unless special/faster delivery is requested by customer.
Spectracom highly recommends that prior to returning equipment for service work, our technical support department be
contacted to provide trouble shooting assistance while the equipment is still installed. If equipment is returned without first
contacting the support department and “no problems are found” during the repair work, an evaluation fee may be charged.
EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE, SPECTRACOM DISCLAIMS ALL WARRANTIES OF
ANY KIND WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER MATERIALS PROVIDED BY SPECTRACOM,
INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
Spectracom shall have no liability or responsibility to the original customer or any other party with respect to any liability, loss,
or damage caused directly or indirectly by an Spectracom product, material, or software sold or provided by Spectracom,
replacement parts or units, or services provided, including but not limited to any interruption of service, excess charges resulting
from malfunctions of hardware or software, loss of business or anticipatory profits resulting from the use or operation of the
Spectracom product or software, whatsoever or howsoever caused. In no event shall Spectracom be liable for any direct, indirect,
special or consequential damages whether the claims are grounded in contract, tort (including negligence), or strict liability.
EXTENDED WARRANTY COVERAGE
Extended warranties can be purchased for additional periods beyond the standard five-year warranty. Contact Spectracom no
later than the last year of the standard five-year warranty for extended coverage.
Table of Contents
1
GENERAL INFORMATION ....................................................................................... 1-1
1.1
Introduction ............................................................................................................... 1-1
1.2
Warranty Information and Product Support ........................................................ 1-2
1.3
1.3.1
Unpacking .................................................................................................................. 1-3
Package Contents ..................................................................................................... 1-3
1.4
Model 9183 Specifications ........................................................................................ 1-4
1.4.1
Receiver ................................................................................................................... 1-4
1.4.2
RS-232 Serial Setup Interface Port .......................................................................... 1-4
1.4.3
10/100 Ethernet Port ................................................................................................ 1-4
1.4.4
Protocols supported.................................................................................................. 1-4
1.4.5
RS-232 Communication Port................................................................................... 1-5
1.4.6
RS-485 Output ......................................................................................................... 1-5
1.4.7
Front Panel Display.................................................................................................. 1-6
1.4.8
Front Panel LED Indicators ..................................................................................... 1-6
1.4.9
Relay Outputs........................................................................................................... 1-6
1.4.10 IRIG Output ............................................................................................................. 1-6
1.4.11 1PPS Output............................................................................................................. 1-7
1.4.12 Frequency output ..................................................................................................... 1-7
1.4.13 Input Power.............................................................................................................. 1-8
1.4.14 Mechanical and Environmental ............................................................................... 1-8
1.4.15 Agency Approvals ................................................................................................... 1-8
2
INSTALLATION........................................................................................................... 2-1
2.1
Installation Summary ............................................................................................... 2-1
2.2
Required Tools and cables ....................................................................................... 2-3
2.3
Power and Ground Connection ............................................................................... 2-3
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
GPS Antenna Installation......................................................................................... 2-4
Antenna Cable for Outdoor Antenna ....................................................................... 2-4
Cable Lengths .......................................................................................................... 2-4
Model 8224 GPS splitter.......................................................................................... 2-5
Model 8226 Impulse Suppressor ............................................................................. 2-5
Model 8227 GPS Inline Amplifier........................................................................... 2-6
2.5
2.5.1
Ethernet Network Cabling ....................................................................................... 2-7
Optional CNC3000 cable kit:................................................................................... 2-7
2.6
2.6.1
2.6.2
2.6.3
2.6.4
Remote port and Serial comm port output pin-outs and wiring .......................... 2-8
Serial Comm ports ................................................................................................... 2-8
RS-485 Remote port ................................................................................................ 2-9
Remote Output Usage ............................................................................................ 2-10
RS-485 Guidelines ................................................................................................. 2-10
2.6.5
2.6.6
3
Connection Method................................................................................................ 2-11
Termination............................................................................................................ 2-16
PRODUCT CONFIGURATION.................................................................................. 3-1
3.1
3.1.1
3.1.2
3.1.3
Network Configuration............................................................................................. 3-1
To configure the product to work on a network via the Serial Setup port............... 3-2
Initial network setup ................................................................................................ 3-3
Default and Recommended Configurations............................................................. 3-6
3.2
3.2.1
3.2.2
Login........................................................................................................................... 3-7
To Change the Default Login Password Values .................................................... 3-10
To reset the current Login Password Values back to the factory default values ... 3-11
3.3
3.3.1
3.3.2
Alarms ...................................................................................................................... 3-12
Alarm Outputs........................................................................................................ 3-12
Alarm log ............................................................................................................... 3-12
3.4
3.4.1
Event Timer ............................................................................................................. 3-14
Configuring the Event Timer ................................................................................. 3-14
3.5
Front Panel Display ................................................................................................ 3-18
3.6
3.6.1
3.6.2
GPS ........................................................................................................................... 3-21
Set System Mode ................................................................................................... 3-22
GPS Signal Status .................................................................................................. 3-24
3.7
3.7.1
3.7.2
Interface Setup ........................................................................................................ 3-29
Configuration parameters for the Remote and Serial Interfaces............................ 3-29
“Set To Defaults” web browser user interface....................................................... 3-31
3.8
3.8.1
3.8.2
IRIG Port ................................................................................................................. 3-33
IRIG B Output........................................................................................................ 3-36
IRIG E Output........................................................................................................ 3-39
3.9
3.9.1
Local System Clocks Setup..................................................................................... 3-44
Time Zone and DST............................................................................................... 3-47
3.10
Logs .......................................................................................................................... 3-50
3.10.1 Display Alarm Log ................................................................................................ 3-51
3.10.2 Display Dial-Out Log (Applicable only to units with Option 3 – Modem)........... 3-52
3.10.3 Display Event Relay Log ....................................................................................... 3-55
3.10.4 GPS Qualification Log........................................................................................... 3-55
3.10.5 Display Operational Log........................................................................................ 3-57
3.10.6 Display Oscillator Log........................................................................................... 3-59
3.11
NTP/SNTP ............................................................................................................... 3-62
3.11.1 Configure NTP....................................................................................................... 3-62
3.11.2 NTP Support .......................................................................................................... 3-64
3.11.3 Application Note: MD5 Authentication using a Cisco Router ............................. 3-64
3.12
NTP Statistics .......................................................................................................... 3-65
3.13
Relays ....................................................................................................................... 3-68
3.13.1
Configuring the relays............................................................................................ 3-68
3.14
Security .................................................................................................................... 3-70
3.14.1 Security Overview ................................................................................................. 3-70
3.14.2 Configuring SSH.................................................................................................... 3-70
3.14.3 Configuring HTTPS............................................................................................... 3-80
3.14.4 Restoring Self Signed Certificates and Private Keys............................................. 3-81
3.14.5 Creating Self Signed Certificates, a Private Key, and a Certificate Request......... 3-82
3.14.6 Requesting Certificate Authority Certificates........................................................ 3-83
3.14.7 Installing Certificates ............................................................................................. 3-84
3.14.8 Using Externally generated Certificates ................................................................ 3-85
3.14.9 What to do if you cannot get into a secure Spectracom Product ........................... 3-86
3.15
Signature Control for the frequency output......................................................... 3-88
3.16
SNMP ....................................................................................................................... 3-90
3.16.1 SNMP Configuration ............................................................................................. 3-90
3.16.2 Spectracom MIB .................................................................................................... 3-95
3.16.3 SNMP Support ....................................................................................................... 3-95
3.17
System Status........................................................................................................... 3-96
3.17.1 Dynamic System Information ................................................................................ 3-96
3.17.2 Static System Information...................................................................................... 3-97
3.17.3 System Test Results ............................................................................................... 3-97
3.17.4 System Features and Options................................................................................. 3-99
3.18
System Time........................................................................................................... 3-100
3.19
Variable Holdover: ............................................................................................... 3-102
3.19.1 Setting the variable holdover value for a TCXO oscillator ................................. 3-103
3.19.2 Setting the variable holdover value for an OCXO or Rubidium oscillator.......... 3-104
4
OPERATION ................................................................................................................. 4-1
4.1
4.1.1
Front Panel ................................................................................................................ 4-1
Status Indicator ........................................................................................................ 4-3
4.2
Rear Panel.................................................................................................................. 4-4
4.3
4.3.1
4.3.2
4.3.3
Leap Second occurrence ........................................................................................... 4-6
Reasons for a Leap Second correction..................................................................... 4-6
Leap Second alert notification ................................................................................. 4-6
Sequence of a Leap Second correction being applied ............................................. 4-7
5
TROUBLESHOOTING ................................................................................................ 5-1
5.1
Front Panel Power and Sync Lamps ....................................................................... 5-1
5.2
Verify operation of a Serial port.............................................................................. 5-3
5.3
Verify operation of a Spectracom TimeTap ........................................................... 5-3
5.4
GPS reception ............................................................................................................ 5-3
5.4.1
5.4.2
No GPS reception .................................................................................................... 5-4
Low GPS Quality..................................................................................................... 5-5
5.5
5.5.1
5.5.2
Modem Dial-out (Option 3) troubleshooting .......................................................... 5-6
Test 1: To verify modem is dialing and connecting to NIST in stand- alone mode:5-6
Test 2: To verify operation of the modem while connected to the NetClock.......... 5-8
5.6
Customer Service .................................................................................................... 5-10
6
SERIAL DATA FORMATS ......................................................................................... 6-1
6.1
Format 0: ................................................................................................................... 6-1
6.2
Format 1: ................................................................................................................... 6-3
6.3
Format 2: ................................................................................................................... 6-5
6.4
Format 3: ................................................................................................................... 6-7
6.5
Format 4: ................................................................................................................... 6-9
6.6
Format 7: ................................................................................................................. 6-10
6.7
Format 8: ................................................................................................................. 6-12
6.8
Format 90: ............................................................................................................... 6-13
7
RS-232 SETUP PORT COMMANDS.......................................................................... 7-1
7.1
fpd ............................................................................................................................... 7-3
7.2
frq ............................................................................................................................... 7-5
7.3
help ............................................................................................................................. 7-6
7.4
IRIG............................................................................................................................ 7-7
7.5
login ............................................................................................................................ 7-8
7.6
logout .......................................................................................................................... 7-9
7.7
ltc .............................................................................................................................. 7-10
7.8
mdo ........................................................................................................................... 7-12
7.9
mdo help <enter> .................................................................................................... 7-12
7.10
mdo avg <on|off> <#|auto> <enter> ...................................................................... 7-12
7.11
mdo log <normal|debug> <enter> ......................................................................... 7-12
7.12
mdo stat [reset] <enter>.......................................................................................... 7-12
7.13
net ............................................................................................................................. 7-13
7.14
net gateway .............................................................................................................. 7-14
7.15
net help ..................................................................................................................... 7-16
7.16
net ip ......................................................................................................................... 7-17
7.17
net mac ..................................................................................................................... 7-18
7.18
net mask ................................................................................................................... 7-19
7.19
net show.................................................................................................................... 7-20
7.20
net http ..................................................................................................................... 7-20
7.21
opt ............................................................................................................................. 7-22
7.22
reboot [bootloader] ................................................................................................. 7-23
7.23
rem............................................................................................................................ 7-24
7.24
sec.............................................................................................................................. 7-25
7.25
sec help ..................................................................................................................... 7-26
7.26
sec level..................................................................................................................... 7-27
7.27
sec password ............................................................................................................ 7-28
7.28
ser.............................................................................................................................. 7-29
7.29
update ....................................................................................................................... 7-30
7.29.1 update app .............................................................................................................. 7-31
7.29.2 update boot............................................................................................................. 7-32
7.29.3 update csl ............................................................................................................... 7-33
7.29.4 update kern............................................................................................................. 7-34
7.29.5 update help ............................................................................................................. 7-35
8
OPTIONS........................................................................................................................ 8-1
8.1
Option 3: Modem ...................................................................................................... 8-1
8.1.1
Option 3 basics......................................................................................................... 8-1
8.1.2
Modem installation .................................................................................................. 8-2
8.1.3
Modem Dial-Out Setup............................................................................................ 8-2
8.1.4
Calibration Call........................................................................................................ 8-3
8.1.5
Time Verification Call ............................................................................................. 8-3
8.1.6
Time Sync Call ........................................................................................................ 8-3
8.1.7
Modem Test Call...................................................................................................... 8-3
8.1.8
Modem Dial-Out CONFIGURE page ..................................................................... 8-4
8.1.9
Modem Dial-out DIALOUT page ........................................................................... 8-6
8.1.10 Modem Dial-out CALIBRATE page....................................................................... 8-8
8.1.11 Modem Dial-out TEST page.................................................................................. 8-10
8.2
8.2.1
Option 4: Rubidium oscillator ............................................................................... 8-13
Comparison of the Rubidium oscillator to the OCXO and standard TCXO
oscillators: .......................................................................................................... 8-13
8.3
8.3.1
Option 5: OCXO oscillator..................................................................................... 8-14
Comparison of the OCXO to the Rubidium and standard TCXO oscillators:.......... 14
9
SW LICENSE NOTICES.............................................................................................. 9-1
List of Figures
Figure 2-1: Cabling recommendations........................................................................................ 2-5
Figure 2-2: Model 8226 Impulse Suppressor.............................................................................. 2-6
Figure 2-3: Model 8227 Inline Amplifier ................................................................................... 2-6
Figure 2-4: Serial port connector ................................................................................................ 2-8
Figure 2-5: Remote Outputs........................................................................................................ 2-9
Figure 2-6: RS-485 Output ....................................................................................................... 2-10
Figure 2-7: One-Way Bus Installation...................................................................................... 2-12
Figure 2-8: Split Bus Configuration ......................................................................................... 2-12
Figure 2-9: Wire Strain Relief .................................................................................................. 2-13
Figure 2-10: TimeView RS-485 Interface ................................................................................ 2-14
Figure 2-11: Model 8179T TimeTap RS-485 Interface............................................................ 2-14
Figure 2-12: Model 9188 RS-485 Interface.............................................................................. 2-15
Figure 2-13: TimeBurst RS-485 Interface ................................................................................ 2-15
Figure 3-1: Serial Setup Interface port connector....................................................................... 3-2
Figure 3-2: Log-in Permissions .................................................................................................. 3-8
Figure 3-3: Configuration mode Log-in ..................................................................................... 3-9
Figure 3-4: Administrator mode Log-in ..................................................................................... 3-9
Figure 3-5: Alarm Setup Screen ............................................................................................... 3-13
Figure 3-6: Event Timer Relay Screen ..................................................................................... 3-14
Figure 3-7: Event Timer Relay Screen ..................................................................................... 3-15
Figure 3-8: Front Panel Display Screen.................................................................................... 3-18
Figure 3-9: GPS Set-up Screen ................................................................................................. 3-21
Figure 3-10: Set System Mode ................................................................................................. 3-23
Figure 3-11: GPS Signal Status Setup Screen .......................................................................... 3-24
Figure 3-12: Interface Screen.................................................................................................... 3-30
Figure 3-13: Restore Interface setup back to factory defaults .................................................. 3-32
Figure 3-14: IRIG Screen.......................................................................................................... 3-33
Figure 3-15: IRIG Output Level ............................................................................................... 3-34
Figure 3-16: IRIG B Time Code description ............................................................................ 3-36
Figure 3-17: IRIG E Time Code description ............................................................................ 3-41
Figure 3-18: Local System Clocks Setup Screen...................................................................... 3-44
Figure 3-19: Time Zone and DST Setup Screen....................................................................... 3-45
Figure 3-20: NTP Screen .......................................................................................................... 3-62
Figure 3-21: NTP Statistics....................................................................................................... 3-65
Figure 3-22: Relay Output Screen ............................................................................................ 3-68
Figure 3-23: SSH configuration Screen.................................................................................... 3-71
Figure 3-24: Creating SSH host key files ................................................................................. 3-72
Figure 3-25: Selecting SSH authentication modes ................................................................... 3-74
Figure 3-26: Adding SSH public key to authorized keys ......................................................... 3-75
Figure 3-27: Adding a new SSH public key file....................................................................... 3-77
Figure 3-28: Deleting SSL Certificate, Certificate Request and Private Key Files.................. 3-81
Figure 3-29: Restoring user’s Self Signed Certificate and Private Key Files........................... 3-81
Figure 3-30: Creating a new Certificate Request and Self Signed Certificate ......................... 3-82
Figure 3-31: A new Certificate Request and Self Signed Certificate ....................................... 3-83
Figure 3-32: Installing a new Certificate .................................................................................. 3-84
Figure 3-33: Using External Certificate.................................................................................... 3-86
Figure 3-34: Signature Control configuration page .................................................................. 3-89
Figure 3-35: SNMPv1 Setup Screen......................................................................................... 3-90
Figure 3-36: System Time ...................................................................................................... 3-100
Figure 3-37: TCXO variable holdover configuration ............................................................. 3-103
Figure 3-38: OCXO and Rb oscillator variable holdover configuration ................................ 3-104
Figure 4-1: Front panel display................................................................................................... 4-2
Figure 4-2: Rear panel illustration .............................................................................................. 4-5
Figure 4-3: Negative Leap Second indication ............................................................................ 4-7
Figure 4-4: Positive Leap Second indication .............................................................................. 4-7
Figure 8-1: Modem Dial-Out CONFIGURE Screen .................................................................. 8-4
Figure 8-2: Modem Dial-Out DIALOUT Configure Screen ...................................................... 8-6
Figure 8-3: Modem Dial-Out CALIBRATE Screen................................................................... 8-8
Figure 8-4: Modem Dial-Out TEST Screen.............................................................................. 8-10
List of Tables
Table 2-1:
Table 2-2:
Table 2-3:
Table 2-4:
Table 3-1:
Table 3-2:
Table 3-3:
Table 3-4:
Table 3-5:
Table 3-6:
Table 3-7:
Table 4-1:
Table 5-1:
Table 5-2:
Table 5-3:
Table 6-1:
Table 7-1:
Time Zone Offsets available for Data Outputs ......................................................... 2-2
Serial Port Pin Assignments ...................................................................................... 2-9
Cable Sources for RS-485 Lines Over 1500 Feet ................................................... 2-10
Cable Sources for RS-485 Lines Under 1500 Feet ................................................. 2-11
Serial Setup port pin-outs .......................................................................................... 3-2
Default and Recommended Configurations .............................................................. 3-6
IRIG B Control Function Field ............................................................................... 3-38
IRIG E Control Function Field................................................................................ 3-43
Descriptions of logs................................................................................................. 3-50
Estimated oscillator error rates.............................................................................. 3-102
Minimum and Maximum allowable holdover values............................................ 3-102
Status Indicator.......................................................................................................... 4-3
Status of Front Panel Power and Sync lampsFront Panel LAN Connector .............. 5-1
Status of Front Panel LAN connector ....................................................................... 5-2
Typical Antenna Cable Resistance Values................................................................ 5-4
Table of Quality Indicators........................................................................................ 6-6
Alphabetical List of Commands................................................................................ 7-2
1 General Information
1.1
Introduction
Spectracom Corporation is a leading manufacturer of synchronized, precise time-keeping devices
meeting the demands for accuracy, reliability and trace ability in mission-critical systems across
networks. Our NetClock is a direct response to customer needs for cutting-edge synchronization
technology at an affordable price.
The Model 9183 is called an NTP time server as it provides disciplined timing using NTP
(Network Time Protocol), and is also called a Master Clock as it meets or exceeds the NENA
(National Emergency Numbers Association) master clock standard.
Spectracom NetClock Master Clocks are based on GPS (Global Positioning System) technology
– tracking up to twelve satellites simultaneously and synchronized to their atomic clocks. This
enables computer networks to synchronize all elements of network hardware and software
(including system logs) down to the millisecond over LANs or WANs – anywhere on the planet.
Technology advancements, including an embedded processor, make it possible to obtain Legally
Traceable Time® tags on log files and simplify digital forensics. The NetClock allows users to
accurately time stamp video surveillance systems, access points, card readers, time clocks and
alarm systems to provide necessary evidence and validation of events.
Set-up and reporting are web browser user interface-enabled – a NetClock can be accessed,
under appropriate security policies, anywhere within a network. The product features browserbased remote diagnostics, configuration and control as well as Flash memory for remote software
upgrades. A 10/100 Mbps Ethernet LAN port provides support for Network Time Protocol
(NTP) over a variety of platforms including Windows 2003, 2000 and XP, Cisco, UNIX, Linux
and more. Remote control and monitoring can also be done through SNMP and Telnet.
Time code outputs are available to meet the requirements of diverse systems – RS-232 serial
ports, RS-485 data bus ports. Alarm outputs and programmable timer outputs are also provided.
The NetClock Master Clock system includes a CE/UL-approved power supply for international
use, GPS antenna and associated mounting hardware.
Model 9183 Instruction Manual
Page 1-1
1.2
Warranty Information and Product Support
Warranty information is found on the leading pages of this manual.
Spectracom continuously strives to improve its products and therefore greatly appreciates any
and all customer feedback given.
Technical support is available by telephone. Please direct any comments or questions regarding
application, operation, or service to Spectracom Customer Service Department. Customer
Service is available Monday through Friday from 8:00 A. M. to 5:00 P.M. Eastern time.
Telephone Customer Service at: 585-321-5800.
In addition, please contact customer service to obtain a Return Material Authorization Number
(RMA#) before returning any instrument to Spectracom Corporation. Please provide the serial
number and failure symptoms. Transportation to the factory is to be prepaid by the customer.
After obtaining an RMA# ship the unit back using the following address:
Spectracom Corporation
Repair Department, RMA# xxxxx
95 Methodist Hill Drive, Suite 500
Rochester, NY 14623
Product support is also available by e-mail. Questions on equipment operation and applications
may be e-mailed to Spectracom Sales Support at:
mailto:[email protected]
Repair or technical questions may be e-mailed to Spectracom Technicians at:
mailto:[email protected]
Visit our web page for product information, application notes and upgrade notices as they
become available at:
http://www.spectracomcorp.com/
Page 1-2
Model 9183 Instruction Manual
1.3
Unpacking
Upon receipt, carefully examine the carton and its contents. If there is damage to the carton that
results in damage to the unit, contact the carrier immediately. Retain the carton and packing
materials in the event the carrier wishes to witness the shipping damage. Failing to report
shipping damaging immediately may forfeit any claim against the carrier. In addition, notify
Spectracom Corporation of shipping damage or shortages, to obtain a replacement or repair
services.
Remove the packing list from the envelope on the outside of the carton. Check the packing list
against the contents to be sure all items have been received, including an instruction manual and
ancillary kit.
1.3.1
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Ƒ
Package Contents
Unit
User manual
CE/UL-approved power supply for international use
Standard DB9F to DB9M RS-232 cable pinned as straight thru (Used for initial
configuration)
AC power cord
Rack-mount kit (2 ears, 4 side screws)
Rubber footpads for desktop installation
3-pin terminal block connector for RS-485 connections
10-pin terminal block connector
Jeweler’s type screwdriver (For tightening the screws on the terminal blocks)
Terminating Resistors, 120:
Spectracom models that have the modem dial-out feature (Option 3) enabled will also receive
the following:
Ƒ
Ƒ
Serial Modem kit
Null modem adapter
Model 9183 Instruction Manual
Page 1-3
1.4
Model 9183 Specifications
Note: The specifications listed are based on the NetClock operating in the “standard mode” of
operation while tracking at least four qualified GPS satellites. Operating the NetClock with less
than four qualified satellites will reduce the accuracies and capabilities of the unit.
1.4.1
Receiver
Received standard:
L1 C/A Code transmitted at 1575.42 MHz.
Satellites tracked:
Up to twelve simultaneously.
Acquisition time:
Typically <4 minutes from a cold start.
Antenna requirements:
Active antenna module, +5V, powered by the NetClock, with 18 to
36 dB gain.
Antenna connector:
Type N, female.
1.4.2
RS-232 Serial Setup Interface Port
Function:
Accepts commands to locally configure the IP network parameters
for initial connectivity. Also used as the interface to the dial-out
modem (Option 3).
Connector:
DB9 female, pin assignments conform to EIA/TIA-574 standard,
data communication equipment.
Character structure:
ASCII, 9600 baud, 1 start, 8 data, 1 stop, no parity.
1.4.3
10/100 Ethernet Port
Function:
1.4.4
10/100 Base T auto sensing LAN connection for NTP / SNTP and
remote monitoring, diagnostics, configuration and upgrade.
Protocols supported
NTP:
Networked NTP Stratum 1 Time Server (RFC 1305), SNTP (RFC
2030).
Security:
MD5 Security.
Loading:
~390 requests per second without encryption.
~340 requests per second with encryption.
Accuracy:
Output jitter within +/-50 microseconds of UTC typical.
Clients supported:
The number of users supported depends on the class of network
and the subnet mask for the network.
A gateway greatly increases the number of users.
Page 1-4
Model 9183 Instruction Manual
HTTP, HTTPS Servers:
For browser-based configuration and monitoring using Internet
Explorer 5 or Netscape 6 per RFC 1945 and 2068.
FTP:
For remote upload of event logs and download of upgrades per
RFC 959.
SNMP:
Supports v1, v2c, and v3.
Telnet:
For limited remote configuration per RFC 854.
Security Features:
Up to 16-character Telnet password, Telnet Disable, FTP Disable,
Secure SNMP, SNMP Disable, HTTPS, HTTP Disable, SCP and
MD5 Authentication.
Connector:
RJ-45, Network IEEE 802.3.
1.4.5
RS-232 Communication Port
Signal:
Selected time Data Format in RS-232 levels when interrogated by
the connected device. This port may also be configured to provide
a continuous once-per-second output.
Connector:
DB9 female, pin assignments conform to EIA/TIA-574 standard,
data communication equipment (DCE). No flow control.
Character structure:
ASCII, 1 start, 8 data, 1 stop, and no parity.
Accuracy:
Data stream on time marker within ± 100 microseconds of UTC on
Sync in Data Formats 0, 1, 3 and 8. Data Formats 2, 4 and 7
within ±1 millisecond of UTC.
Configuration:
Baud rate and output Data Formats are selected using the web
browser user interface. Bit rate selections are 1200, 2400, 4800
and 9600 baud. There are eight Data Format selections available.
1.4.6
RS-485 Output
Signal:
Selected time Data Format in RS-485 levels, output once-persecond.
Connector:
Removable 3-position terminal block (supplied).
Character structure:
ASCII, 1 start, 8 data, 1 stop, and no parity.
Accuracy:
Data stream on time marker within ± 100 microseconds of UTC on
Sync in Data Formats 0, 1, 3 and 8. Data Formats 2, 4 and 7
within ±1 millisecond of UTC.
Configuration:
Baud rate and output Data Formats are selected using the web
browser user interface. Bit rate selections are 1200, 2400, 4800,
and 9600 baud. There are eight Data Format selections available.
Model 9183 Instruction Manual
Page 1-5
1.4.7
Front Panel Display
Display Type:
Two separate Back-lit LCD displays.
Display Options:
Each display is configurable via the web browser user interface
Interface. Choices consist of Time, Date, Day of Year, Software
Versions, Fonts, and Date Formats.
1.4.8
Front Panel LED Indicators
Power:
Green, always on.
Sync:
Tri-color LED indicates the time data accuracy and equipment
fault.
LAN:
Green: Good Link indicator.
Yellow: Network activity.
1.4.9
Relay Outputs
Three separate outputs provided for either Programmable Event Timer Output or Major/Minor
Alarm indication.
Relay contacts:
NO, NC, and Common.
Contact rating:
30 VDC, 2 amps.
Connector:
10-position 3.81 mm terminal block (mate supplied).
Programmable Timer Output:
128 On/Off events available. Timer events that are hourly, daily or
weekly only count as a single event so many events can be
programmed.
Major/Minor Alarms:
1.4.10
Relay contacts allow remote monitoring of operational status. A
power failure, CPU failure loss of time sync, etc cause the alarm
relay to de-energize. The alarm relay returns to normal
operation (energized) when the fault condition is corrected.
IRIG Output
Signal:
Selectable IRIG B or IRIG E, amplitude modulated sine wave
(AM) or pulse-width-coded (TTL).
AM Carrier:
IRIG B-1000 Hz.
IRIG E-100 Hz or 1000 Hz.
AM Signal Level:
Adjustable from 0 to 10 Vp-p mark amplitude into loads of 600
ohms or greater. Factory set to 2.0 V p-p.
Page 1-6
Model 9183 Instruction Manual
Accuracy:
IRIG-B, IRIG-E 1000 Hz AM: ±20 microseconds of UTC.
IRIG-E 100 Hz AM: ±200 microseconds of UTC.
IRIG-B, IRIG-E TTL: ±2 microseconds of UTC.
Connector:
BNC female.
Configuration:
IRIG Formats B or E in AM or TTL levels. Time data is
configurable with Time Zone Offsets and DST rules.
Signature Control may also be placed on the output signal. This
feature removes the modulation code from the IRIG output
whenever the selected alarm condition is present. The output
is restored when the fault is corrected.
1.4.11 1PPS Output
Signal:
One pulse-per-second square wave derived from the GPS receiver.
Signal Level:
TTL compatible into high impedance loads, 1.5 V base-to-peak
into 50 ohms.
Pulse Width:
200 milliseconds.
Accuracy:
Positive edge within ± 500 nanoseconds of UTC when locked to
GPS.
Connector:
BNC female.
1.4.12
Frequency output
Signal:
10 MHz sinewave.
Signal Level:
350mVrms into 50 ohms.
Harmonics:
Better than -30 dB down.
Spurious:
Better than -35 dB down.
Accuracy:
TCXO oscillator (Standard): 1x10-10 typical 24-hour average locked to GPS.
OCXO oscillator (Option 5): 1x10-11 typical 24-hour average locked to GPS,
2x10-9 per week typical aging unlocked.
Rubidium oscillator (Option 4): 1x10-12 typical 24-hour average locked to GPS,
1x10-11 per month typical aging unlocked.
Connector:
BNC female
Signature Control:
This configurable feature removes the output signal whenever a
major alarm condition or loss of time sync condition is present.
The output is restored when the fault condition is corrected.
Model 9183 Instruction Manual
Page 1-7
1.4.13 Input Power
Power source:
90 to 240 VAC, 47 to 63 Hz through an IEC 320 universal
connector. North American AC power cord supplied. AC cables
for other countries available locally.
The Spectracom P/N for the power supply is PS06-0E0J-DT01
DC input:
9.5 to 30 VDC, 10 watts, through a CE/UL/CSA-approved power
adapter (supplied).
Rubidium (Option 4) uses T00061, 24 VDC nominal (+22.5 - +30
VDC) @ 2.5 amps.
Connector:
Barrel, 5.5mm O.D., 2.5 mm I. D.
Polarity:
Negative shell, positive center.
1.4.14 Mechanical and Environmental
Dimensions:
EIA 19” rack mount W x 1.75” H [1U] x 11.00” D
(483 mm W x 44 mm H x 305 mm D).
The Rubidium option (Option 4) is 3.5” H (88mm) [2U] and 8 lbs
(3.6 kg).
Weight:
4.8 lbs. (2.2 kg).
Temperature:
32q to 122qF (0q to 50qC) operating range.
-40q to 185qF (-40q to 85qC) storage range
Humidity:
10% - 95% relative humidity, non-condensing
1.4.15 Agency Approvals
CE Mark:
FCC:
UL/CSA:
EN60950, EN55022, EN55024
Part 15
listed power adapter.
Note: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own
expense.
Page 1-8
Model 9183 Instruction Manual
2 Installation
2.1
Installation Summary
This section provides an overview summary of the installation process. The installation of the
NetClock Master Clock consists of the following steps:
1) If desirable - install the rack-mount ears on the two sides of the front panel and install the
unit in a standard 19 inch rack cabinet.
2) Connect the DC power input jack to a standard AC outlet with the supplied power supply.
(Refer to Section 2.3).
3) From the network administrator, obtain an available static network IP address, the
network subnet mask and the IP address of the immediate gateway (if installed) if the
subnet needs to be able to access the NetClock.
4) Assign the IP address, net mask and gateway settings by using the rear panel Serial Setup
Interface DB9F connector interfaced to a PC with the provided serial cable (PC should be
running either Microsoft HyperTerminal or ProComm). (Refer to Section 3.1).
5) Connect the NetClock’s front panel Ethernet port to an available hub/switch on the
network with a standard network cable. Verify the green Good Link lamp next to the
Ethernet connector illuminates.
6) Install the GPS antenna, surge suppressor, antenna cabling and preamplifier if required.
Refer to Section 2.4.
A. If using a window-mount antenna (Model 8228), place the antenna in a window
that has no metallic tinting or screening in or on the glass and then place the unit
in single-satellite mode. (Refer to section 3.6.1).
Note: Use of a window-mount antenna with a Model 9183 NetClock is not recommended if
using an OCXO (Option 5) or Rubidium (Option 4) type oscillator in the NetClock.
7) Connect the GPS cable to the rear panel antenna input jack on the back of the NetClock.
8) Verify the NetClock front panel Sync lamp turns green within about 20 minutes.
9) If supplied with Option 3 Dial-out Modem, connect the dial-out modem to the rear panel
Setup port. Change the console/modem mode of operation to Modem and power cycle.
(Refer to Section 8.1).
10) Configure the NetClock front panel LCD’s as desired. (Refer to Section 3.5).
Model 9183 Instruction Manual
Page 2-1
11) Interface the NetClock to wall display clocks and other peripheral devices as needed.
12) Configure each of the rear panel outputs to these devices for desired local times, baud
rates and Data Formats using either the web browser user interface user interface or the
Serial Setup Port (Each port is separately configured so each port used may need to be
configured for your desired configuration). (Refer to Section 3.7 for web browser user
interface or Section 7 for Serial Setup Interface port configuration). (Refer to Table 2-1
for information regarding local time).
13) Synchronize the network PC’s via NTP using the Ethernet port as desired. (Refer to the
Support dropdown page at www.spectracomcorp.com for assistance). (Refer to Table 2-1
for information regarding local time).
14) Review your security configuration settings (refer to Section 3).
Automatic
Daylight Saving
Time adjustment
capable
NO
Data Output
Port available from
Time Zone
Offset for local
time
Network Time
Protocol (NTP)
Ethernet port on front panel
NOT
AVAILABLE
Data Format 0
Data Format 1
Data Format 2
Remote/Serial on rear panel
Remote/Serial on rear panel
Remote/Serial on rear panel
00-23 Hours
+/-12:00
NOT
AVAILABLE
YES
YES
NO
Data Format 3
Data Format 4
Remote/Serial on rear panel
Remote/Serial on rear panel
+/-12:00
NOT
AVAILABLE
YES
NO
Data Format 5
Data Format 7
Remote/Serial on rear panel
Remote/Serial on rear panel
+/-12:00
NOT
AVAILABLE
YES
NO
Data Format 8
Data Format 90
Remote/Serial on rear panel
Remote/Serial on rear panel
00-23 Hours
NOT
AVAILABLE
YES
NO
IRIG B
IRIG E
IRIG port on rear panel
IRIG port on rear panel
+/-12:00
+/-12:00
YES
YES
Additional Notes
NTP is always UTC. Must set
Local time/DST correction on
each PC via the Date/Time
properties window.
None
None
Data Format 2 always reflects
UTC. It can’t be configured as
local time.
None
Data Format 4 always reflects
UTC. It can’t be configured as
local time.
None
Data Format 7 always reflects
UTC. It can’t be configured as
local time.
None
Data Format 90 always reflects
UTC. It can’t be configured as
local time.
None
None
Table 2-1: Time Zone Offsets available for Data Outputs
Page 2-2
Model 9183 Instruction Manual
2.2
Required Tools and cables
1) Phillips screwdriver to install the unit’s rack-mount ears.
2) Screwdriver to mount the unit in a standard 19-inch rack.
3) Wire strippers for the RS-485 cabling.
4) Supplied jeweler’s type screwdriver for tightening the RS-485 wiring terminal block
connectors (Located in the ancillary kit).
5) RS-232 straight-thru DB9 to DB9 cable (supplied)
6) Ethernet cables (Refer to Section 2.5).
2.3
Power and Ground Connection
An external AC to DC power adapter powers the NetClock.
This International and US Desk Top adapter has a detachable AC power cord to an IEC
320 connector. The power adapter is shipped with a line cord compatible with AC receptacles
(NEMA 5-15R) commonly found in the United States and Canada. Alternate type line cords or
adapters may be obtained locally.
The chassis ground stud allows the NetClock chassis to be connected to an earth ground or single
point ground. Connecting the chassis to a single point ground system may be required in some
installations to ensure optimum lightning protection. An earth ground is also recommended in
installations where excessive noise on the power line degrades receiver performance.
Rack-mount ears are provided in the ancillary kit if the NetClock will be installed in a standard
19 inch rack.
Note: Auto-Negotiate, which determines the network settings to use, only occurs at power-on.
Always connect the Ethernet cable before powering-on the unit for the first time. If the Ethernet
cable is connected after power-on, the unit will default to 10 Mbps and half duplex.
Model 9183 Instruction Manual
Page 2-3
2.4
2.4.1
GPS Antenna Installation
Antenna Cable for Outdoor Antenna
When using the Model 8225 GPS outdoor antenna, Spectracom recommends using LMR-400
low loss type cable, Spectracom CAL7xxx for the GPS antenna cable. RG-213 type coax, such
as Belden 8267, may also be used but low loss cable offers the best performance. To simplify the
installation process, Spectracom offers GPS cable assemblies terminated with Type N Male
connectors. Specify part number CAL7xxx, where xxx equals the length in feet. Standard
lengths are 10, 25, 50, 100, 150 and 200 feet.
If the antenna cable is purchased locally, select coax suitable for outdoor use. Consider the
cable's weather ability, temperature range, UV resistance, and attenuation characteristics.
Do not allow the antenna cable to be placed in standing water, as water may permeate through
the coax jacket over time. On flat roof installations, the coax can be suspended by cable hangers
or placed in sealed PVC conduit. Apply a weather proofing sealant or tape over all outdoor
connections.
Installation of a surge protection device in the antenna line is recommended to protect the
NetClock receiver and connected devices from lightning damage. Spectracom offers the Model
8226 Impulse Suppressor to shunt potentially damaging voltages on the antenna coax to ground.
Refer to the Model 8226 Impulse Suppressor Section for a complete description of the Model
8226.
2.4.2
Cable Lengths
Using Spectracom CAL7xxx or Times Microwave LMR-400 coax, the maximum antenna cable
length permitted is 200 feet because the Model 9183 allows 12 dB of loss. An amplifier is
needed whenever antenna cable lengths exceed 200 feet. Installations requiring longer antenna
cables may use the Model 8227 Inline Amplifier, or lower loss cable. Refer to the Model 8227
Section for additional information on the Model 8227.
When selecting alternate antenna cable sources, the attenuation characteristics at the GPS
frequency of 1575.42 MHz must be known. To ensure optimum receiver performance, the total
antenna cable attenuation must not exceed 12 dB. Cable attenuation of greater than 12 dB
requires the use of a Model 8227 Inline Amplifier. Refer to Figure 2-1for recommended cable
lengths.
Page 2-4
Model 9183 Instruction Manual
INSTALL IMPULSE SUPPRESSOR
BETWEEN THE ANTENNA AND
AMPLIFIER WHENEVER
POSSIBLE.
5 FOOT CABLE INCLUDED WITH PREAMP
MODEL 8225
MODEL 8226
MODEL 8227
200' MAXIMUM
(10 dB MAXIMUM)
400' MAXIMUM
SPECTRACOM
MASTER CLOCK
450’ MINIMUM1, 600' MAXIMUM
(24 dB MINIMUM1, 33 dB MAXIMUM)
Figure 2-1: Cabling recommendations
2.4.3
Model 8224 GPS splitter
The GPS Antenna Splitter, Model 8224 is designed for use with an existing antenna/cable setup.
It eliminates the need and expense for a second antenna/cable run when two synchronization
systems are desirable. The Model 8224 should be installed indoors.
2.4.4
Model 8226 Impulse Suppressor
Spectracom recommends the use of an inline coaxial protector for all products with an outside
antenna. Spectracom offers the Model 8226, Impulse Suppressor, to protect the receiver from
damaging voltages occurring on the antenna coax. Voltages exceeding the impulse suppresser
trip point are shunted to the system ground. The Model 8226 is designed to withstand multiple
surges.
Two LMR-400 field-installable N type connectors are provided with the Model 8226 to splice in
the surge suppressor wherever it needs to be placed. However, the recommended method to
avoid having to cut the antenna cable is to determine the desired location of the Model 8226
ahead of time and then order two lengths of pre-terminated cables instead of just one long cable
that spans the entire distance between the antenna and the Master Clock.
Mount the suppressor indoors, preferably where the coax enters the building. Install the
suppressor on a grounding panel or bulkhead as shown in Figure 2-2.
Spectracom offers a grounding kit that includes grounding cable, clamps, mounting bracket and
ground plane. The Spectracom Part Number for this kit is 8226-0002-0600. Contact our Sales
department for additional information.
Model 9183 Instruction Manual
Page 2-5
INSTALL "O" RING
.0625 inch (15.88mm)
DIAMETER
MOUNTING
HOLE PATTERN
.203 inch (5.16mm)
DIAMETER
SINGLE POINT GROUNDING
PANEL OR BULKHEAD
Figure 2-2: Model 8226 Impulse Suppressor
Refer to the Model 8226 Manual for proper installation.
2.4.5
Model 8227 GPS Inline Amplifier
An inline amplifier is required whenever GPS antenna cable lengths cause greater than 12 dB
attenuation. Using Spectracom CAL7xxx coax, an amplifier is needed whenever antenna cable
lengths exceed 200 feet.
The Model 8227 GPS Inline Amplifier, shown in Figure 2-2, extends the maximum cable length
to 600 feet. The Model 8227 provides 20 dB of gain and is powered by the NetClock receiver.
Figure 2-3: Model 8227 Inline Amplifier
Two LMR-400 field-installable N type connectors are provided with the Model 8227 to splice in
the amplifier wherever it needs to be placed. However, the recommended method to avoid
having to cut the antenna cable is to determine the desired location of the Model 8227 ahead of
time and then order two lengths of pre-terminated cables instead of just one long cable that spans
the entire distance between the antenna and the Master Clock.
A five foot N type connector cable is also supplied with the Model 8227 to allow it to be
installed after the Model 8226 surge suppressor . The Model 8227 should always be installed
after the surge suppressor to prevent lightning or surge damage to the preamp.
Refer to the Model 8227 Manual for proper installation.
Page 2-6
Model 9183 Instruction Manual
2.5
Ethernet Network Cabling
Spectracom NetClock Master Clocks provide a 10/100 Ethernet port for full NTP functionality
as well as full web browser user interface enabled configuration, monitoring and diagnostic
support.
The Ethernet port is provided on the front panel for easy connection to routers and hubs.
Use standard CAT 5 cable with RJ45 connectors.
When connecting to a hub or router use a straight-through wired cable.
When connecting directly to a PC, use a crossover wired cable.
2.5.1
Optional CNC3000 cable kit:
Spectracom offers an available cable kit called the CNC3000. This kit consists of three cables:
1) Six foot RS-232 Setup port cable DB9M to DB8F for initial configuration
1) Six foot Cat 5 crossover LAN cable for direct PC connection
1) Six foot Cat 5 patch LAN cable for LAN hub link.
Contact our Sales department if you would like to obtain the CNC3000 kit.
Model 9183 Instruction Manual
Page 2-7
2.6
Remote port and Serial comm port output pin-outs and
wiring
This section contains wiring and pin-out information for the rear panel Remote RS-485 and
Serial RS-232 Comm ports.
2.6.1
Serial Comm ports
The rear panel of the Model 9183 has two RS-232 SERIAL COMM ports that are available to
synchronize peripheral devices. These ports can provide RS-232 output data to synchronize
external devices that can accept RS-232 Data Formats as an input. The available Data Formats
are listed in Section 6.
The Serial ports can provide RS-232 data in one of two modes. The Interrogation mode provides
a one-time RS-232 time stamp each time that the port receives a request character from the
external device. In between the requests for time, there is no output. The Multicast mode
broadcasts the time stamp every second. The Interrogation mode is the factory default. This
mode should be changed to Multicast mode in the web browser user interface if the external
device being synchronized does not send a request character for the time but rather just “listens”
for the time to be sent every second.
The configuration of the data, including the baud rate, the Data Format, the request character in
the Interrogation mode, Time Zone Offsets and Daylight Saving Time rules is chosen from the
web browser user interface. Refer to Section 3.7 for information regarding port configuration.
The SERIAL COMM ports have a standard RS-232 pin configuration as shown in Figure 2-4
and Table 2-2.
Figure 2-4: Serial port connector
Page 2-8
Model 9183 Instruction Manual
2
PIN
SIGNAL
RXD
O
I/O
3
TXD
I
5
6
7
8
GND
DSR
RTS
CTS
O
*
*
DESCRIPTION
Receive Data (RS-232
output data to a device)
Transmit Data (RS-232
input data from a device)
Signal Common
Data Set Ready
Request to Send
Clear to Send
Table 2-2: Serial Port Pin Assignments
2.6.2
RS-485 Remote port
The NetClock has two Remote Connections labeled “RS-485 PORT 1” and “RS-485 PORT 2”.
These outputs provide a continuous once-per-second time data stream in the selected Data
Format. There are two input time Data Formats and five-output time Data Format selections and
one position data stream in NMEA 0183 format available. Refer to Section 6 for a complete
description of the Data Format structures.
In addition to Data Formats, baud rate and UTC time difference of each output is selectable.
Refer to the Interface Set-up Section 3.7 for configuring these outputs.
A 3-position terminal block is supplied in the ancillary kit for each of the Remote Connections.
Also included in the ancillary kit is a jeweler’s type screwdriver to tighten the screws.
Connector pin assignments are shown in Figure 2-5.
RS-485 REMOTE
PORT 1 PORT2
Figure 2-5: Remote Outputs
RS-485 is a balanced differential transmission requiring twisted pair cabling.
RS-485 characteristics make it ideal to distribute time data throughout a facility. Each Remote
Output can provide time to 32 devices at cable lengths up to 4,000 feet. Refer to Figure 2-6 for a
schematic representation of each RS-485 output driver. Relative to RS-485 specifications, the A
Model 9183 Instruction Manual
Page 2-9
terminal (Pin 2) is negative with respect to the B terminal (Pin 1) for a mark or binary 1. The A
terminal is positive to the B terminal for a space or binary 0.
Error! Objects cannot be created from editing field codes.
Figure 2-6: RS-485 Output
Spectracom offers many devices that accept the RS-485 data stream as an input reference. These
products include display clocks, RS-485 to RS-232 converters, Ethernet Time Servers, and radio
link products to meet various time applications and requirements. For information on Remote
Output usage refer to Section 2.6.2.
2.6.3
Remote Output Usage
The Remote Outputs provide a continuous once-per-second time data stream in RS-485 levels.
RS-485 is a balanced differential transmission, which offers exceptional noise immunity, long
cable runs and multiple loading. These characteristics make RS-485 ideal for distributing time
data throughout a facility.
Each Remote Output can drive 32 devices over cable lengths up to 4000 feet. Spectracom
manufactures wall clocks, Ethernet Time Servers, RS-485 to RS-232 converters and radio link
products that utilize the RS-485 data stream as an input.
Figure 2-7 and Figure 2-8 illustrate typical RS-485 time data bus interconnections. Follow the
guidelines listed below when constructing the RS-485 data bus.
2.6.4
RS-485 Guidelines
Cable selection: Low capacitance, shielded twisted pair cable is recommended for installations
where the RS-485 cable length is expected to exceed 1500 feet. Table 2-3 suggests some
manufacturers and part numbers for extended distance cables. These cables are specifically
designed for RS-422 or RS-485 applications; they have a braided copper shield, nominal
impedance of 120 ohms, and a capacitance of 12 to 16 picofarads per foot.
RS-485 cable may be purchased from Spectracom. Specify part number CW04xxx, where xxx
equals the length in feet.
MANUFACTURER
Belden Wire and Cable Company
1-800-BELDEN-1
Carol Cable Company
606-572-8000
National Wire and Cable Corp.
232-225-5611
PART NUMBER
9841
C0841
D-210-1
Table 2-3: Cable Sources for RS-485 Lines Over 1500 Feet
Page 2-10
Model 9183 Instruction Manual
For cable runs less than 1500 feet, a lower-cost twisted pair cable may be used. Refer to Table
2-4 for possible sources. In addition, Category 5 cables may be used for cable runs less than
1500 feet.
MANUFACTURER
Alpha Wire Corporation
1-800-52ALPHA
Belden Wire and Cable Company
1-800-BELDEN-1
Carol Cable Company
606-572-8000
PART NUMBER
5471
9501
C0600
Table 2-4: Cable Sources for RS-485 Lines Under 1500 Feet
2.6.5
Connection Method
The RS-485 transmission line must be connected in a daisy chain configuration as shown in
Figure 2-7: One-Way Bus Installation. In a daisy chain configuration, the transmission line
connects from one RS-485 receiver to the next. The transmission line appears as one continuous
line to the RS-485 driver.
A branched or star configuration is not recommended. This method of connection appears as
stubs to the RS-485 transmission line. Stub lengths affect the bus impedance and capacitive
loading which could result in reflections and signal distortion.
Model 9183 Instruction Manual
Page 2-11
TERMINATE
END DEVICE
DISPLAY
NTP TIME SERVER
NetClock
Master
Clock
RS-485
In/Out
Terminal
Block
RS-485
In/Out
8179T
TimeTap
TimeView 230
9188 Time Server
RS-232
Terminal
Block
Terminal
Block
RS-485
Time Data Bus
RS-485
Output
Terminal
Block
Twisted
Pair Cable
RS-485
In/Out
RS-485
In/Out
Terminal
Block
TimeView 400
DISPLAY
Terminal
Block
Terminal
Block
RS-485
In/Out
8179T
TimeTap
TimeBurst
RS-232
DIGITAL
MESSAGE
Figure 2-7: One-Way Bus Installation
The RS-485 Output can be split in a total of two directions as shown in Figure 2-8. This allows
the NetClock to be centrally located. Connecting in this method can simplify installation and
possibly reduce the amount of cable required.
TERMINATE
END DEVICE
DISPLAY
RS-232
TimeView 312
8179T
TimeTap
RS-485
In/Out
TERMINATE
END DEVICE
8179T
TimeTap
9188
Time Server
RS-485
In/Out
Terminal
Block
Terminal Block
RS-232
NTP TIME SERVER
Terminal
Block
Twisted
Pair Cable
RS-485
In/Out
Terminal
Block
TimeView 230
DISPLAY
RS-485
Output
Terminal
Block
NetClock
Master Clock
RS-485
Time Data Bus
Terminal
Block
8179T
TimeTap
RS-232
Figure 2-8: Split Bus Configuration
Page 2-12
Model 9183 Instruction Manual
Most RS-485 connections found on Spectracom equipment are made using a removable terminal
strip. A jaw that compresses the wires when tightened secures the wires. When using small
diameter wire, 22-26 gauge, a strain relief can be fashioned by wrapping the stripped wire over
the insulating jacket as shown in Figure 2-9. Wrapping the wires in this manner prevents smaller
gauge wires from breaking off when exposed to handling or movement.
STRIP
WIRE
WRAP WIRE OVER
INSULATING JACKET
INSERT AND
TIGHTEN
Figure 2-9: Wire Strain Relief
Model 9183 Instruction Manual
Page 2-13
TimeView display clocks use a 6-position terminal block to connect to the RS-485 data bus.
Connect the TimeView to the NetClock/GPS RS-485 Output as shown in Figure 2-10. The
TimeView display clocks accept only Data Formats 0 or 1.
Figure 2-10: TimeView RS-485 Interface
The Model 8179T TimeTap is an RS-485 to RS-232 converter. The Model 8179T has a DB9
RS-232 interface that receives operational power from the RS-232 flow control pins RTS or
DTR. Connect the TimeTap to the RS-485 data bus as shown in Figure 2-11.
Figure 2-11: Model 8179T TimeTap RS-485 Interface
Page 2-14
Model 9183 Instruction Manual
Spectracom Model 9188 is an Ethernet Time Server that supports NTP and SNTP time protocols.
The Model 9188 accepts Format 0, Format 2 or Format 8 (Format 8 is not available on all Model
9188’s- contact Tech Support for additional information) and connects to the RS-485 data bus
through a three-position terminal block. Connect the Model 9188 to the NetClock as shown in
Figure 2-12.
.
Figure 2-12: Model 9188 RS-485 Interface
The Model 8185, TimeBurst¥, provides a digital time-of-day data burst to a radio transmitter.
The TimeBurst accepts Data Format 0 or 1. Connect the TimeBurst to the RS-485 data bus using
a 3-position terminal block as shown in Figure 2-13.
Figure 2-13: TimeBurst RS-485 Interface
Model 9183 Instruction Manual
Page 2-15
2.6.6
Termination
A termination resistor is required on devices located at the ends of the RS-485 transmission line.
Terminating the cable end preserves data integrity by preventing signal reflections.
For a one-way bus installation (Figure 2-7), terminate the last device on the bus. The RS-485
data bus can be split in two directions as shown in Figure 2-8. In a split bus configuration,
terminate the devices installed on each end of the bus. Most Spectracom products include a
built-in termination switch to terminate the RS-485 bus when required or a resistor is supplied
with the equipment if no termination switch is available.
Page 2-16
Model 9183 Instruction Manual
3 Product Configuration
3.1
Network Configuration
The product has a 10/100 Mbps Ethernet port, which can be used to connect the unit to a
network. The NetClock’s network settings will need to be initially configured via the rear panel
setup port or with a direct connect to a stand-alone PC (such as a laptop). These settings can
thereafter be modified through either the serial port or web browser user interface as desired. The
values to enter into the fields described below will be specific to your setup, and can be obtained
from your network administrator.
IP Address:
This is the unique 32-bit static address assigned to the product. The
default address is 10.10.200.1
Subnet Mask:
This is a 32-bit mask that specifies the range of IP addresses of the
Ethernet segment the unit is connected to. The default value is
255.255.255.0.
Gateway:
When the gateway IP is disabled on the product, the unit cannot be
accessed from subnets outside the local subnet. When enabled, the
IP address of the subnet's gateway will need to be specified. The
default is disabled.
Telnet:
This is a toggle option to enable or disable the unit's telnet
interface.
FTP:
This is a toggle option to enable or disable the unit's FTP interface.
HTTP:
This is a toggle option to enable or disable the unit's HTTP
interface. (For security reasons HTTP should be disabled when
HTTPS is the desired connection method to the web browser user
interface).
SSH:
This is a toggle option to enable or disable the unit's SSH interface
Model 9183 Instruction Manual
Page 3-1
Before the NetClock can provide NTP time stamps to synchronize the network as well as access
to the web browser user interface Server for configuration and logs can be obtained, the IP
address of the NetClock has to be changed from the factory default to the new static address for
your particular network.
The IP address and subnet values can be changed using either the rear panel setup port with a
serial cable and a terminal emulator program (recommended) OR they can be changed using a
PC’s network interface card (NIC) connected directly to the front panel Ethernet port with a
network cross-over cable. The PC will need to be configured in Network Settings with the IP
address of 10.10.200.x (Where x is any number from 2 to 254) and a subnet mask of
255.255.255.000.
3.1.1
To configure the product to work on a network via the Serial Setup
port
Connect the serial comm port of your PC to the 9-pin Serial Set-up Interface connector. The pinouts for this connector are shown below.
Use a Terminal Emulator program such as HyperTerminal or equivalent to connect to the
NetClock. Port settings should be 9600 Baud, No parity, 8 data bits, 1 stop bit, No flow control.
If you have any difficulty with either the terminal emulator program or communicating with the
port, refer to the HyperTerminal Application Note at:
http://www.spectracomcorp.com/support/applicationNotes.php.
Figure 3-1: Serial Setup Interface port connector
PIN
2
SIGNAL
RXD
I/O
O
3
TXD
I
5
6
7
8
GND
DSR
RTS
CTS
O
*
*
DESCRIPTION
Receive Data (RS-232
output data to PC)
Transmit Data (RS-232
input data from PC)
Signal Common
Data Set Ready
Request to Send
Clear to Send
Table 3-1: Serial Setup port pin-outs
Page 3-2
Model 9183 Instruction Manual
3.1.2
Initial network setup
If the unit has not yet been configured for a network, it will boot with the default settings and the
‘Spectracom login:’ prompt will appear; Login as administrator to change the default settings.
Note: To make changes to the settings, you must be logged in with configuration or
administrator privileges. Config mode provides limited configuration privileges and admin
provides full configuration privileges.
To Login with administrator-level permissions with the ‘login’ command:
1) If “Spectracom login:” is not currently displayed, press the <enter> key.
2) The unit will respond with “Spectracom login:”
3) After Spectracom login:” type: admin <enter>
(Note: User logins and passwords are case sensitive).
4) The unit will respond with “Password:”
Type admin123 <enter>
(Note: For security reasons, the unit will not show what you type).
6) The unit will then display “welcome to the Command Line Interface” followed by a “>”
(Known as the Command prompt).
Note: For config mode login, replace the phrase of admin with the phrase of config and replace
the password phrase of admin123 with the phrase of config12.
At the command prompt (>), perform the following to configure the network settings:
3.1.2.1 To display or configure the IP address:
To display the current IP address, type net ip <enter> (factory default is 10.10.200.1)
To change the IP address to the desired IP address, type net ip xxx.xxx.xxx.xxx <enter> (where
x is the desired address).
3.1.2.2 To display or configure the Net Mask:
To display the current subnet mask, type net mask <enter> (factory default is 255.255.255.0)
To change the current subnet to the desired subnet mask, type net mask xxx.xxx.xxx.xxx
<enter> (where x is the desired subnet mask).
3.1.2.3 To display or configure the Gateway settings:
To display the current gateway configuration, type net gateway <enter> (factory default is
disabled).
To enable the gateway, type net gateway yes xxx.xxx.xxx.xxx <enter> (where x is the
immediate network gateway’s IP address).
Model 9183 Instruction Manual
Page 3-3
Note: Attempting to enable or set a gateway with an invalid IP address or an IP address that is
not on the same subnet will result in an error. Be sure the desired gateway exists and is
reachable on the LAN before setting/enabling it with the net gateway subcommand.
To disable the gateway, type net gateway no <enter>
3.1.2.4
To display the current network configuration
To display the entire current network configuration, type net show <enter>
Example: To put the product on the network as 10.10.200.5 with a subnet mask of
255.255.255.128 and no gateway:
Connect to the serial port of the unit.
Connect to the serial port of the unit.
Login with configuration- or administrator-level permissions with the ‘login’ command.
Type net ip 10.10.200.5 <enter> to set the IP address.
Type net mask 255.255.255.128 <enter> to set the subnet mask.
Type net gateway no <enter> to disable the gateway feature.
Note: Auto Negotiate, which determines the network settings to use, only occurs at power-on.
Always connect the Ethernet cable before powering-on the unit for the first time. If the Ethernet
cable is connected after power-on, the unit will default to 10 Mbps and half-duplex.
To configure the product to work on a network via web browser user interface:
Connect a PC to the Ethernet port using a network cross-over cable. In Windows “network
settings” configure the PC with a static address of 10.10.200.x (Where x is any number between
2 an 254) and a subnet mask of 255.255.255.0. Then, connect to the web browser user interface
after booting the unit. Use a PC with a web browser (Such as Internet Explorer version 5.0 or
greater or Netscape) and connect to the product by typing in the IP address into the URL address
window of the browser as follows: http://10.10.200.50 (or your IP address). Then, click on
“Enter Main Page”. Login to configuration or administrator level mode if changes are desired.
Refer to Section 1.1for instructions on web browser user interface login.
Choose "System Setup" from the bottom frame and "Network" from the left frame.
All fields will display the current system settings. At the bottom of the frame, clicking Reset will
revert any changes made at this window since last pressing Submit.
Page 3-4
Model 9183 Instruction Manual
The IP Address and Gateway Address fields must be entered in 'dotted-quad' format.
The Subnet Mask is displayed as pull down menu showing a list of possible subnet masks.
Setting the gateway to Disabled will cause the values in the Gateway Address field to be ignored.
The Telnet and FTP settings are displayed as radio buttons.
Example: To put a unit on the network as 10.10.200.5 with a subnet mask of 255.255.254.0, a
gateway of 10.10.200.10, with Telnet disabled and FTP enabled:
Connect to the web browser user interface of the product.
Login to configuration- or administrator-level mode and browse to the Network configuration
page.
Enter ‘10’, ‘10’, ‘200’, and ‘5’ in the corresponding IP Address fields.
Select ‘255.255.254.0’ from the Subnet Mask pull-down menu.
Choose the Gateway “Enabled” radio button.
Enter ‘10’, ‘10’, ‘200’, and ‘10’ in the corresponding Gateway Address fields.
Choose the Telnet “Disabled” radio button.
Choose the FTP “Enabled” radio button.
Review the changes made and click Submit. The browser will display the status of the change.
Note: If changing the IP address of the NetClock to a different subnet, when you hit submit, the
NetClock will immediately start using the new IP address. This will cause the web browser user
interface to stop responding. Move the NetClock to the network and you should then be able to
re-access the web browser user interface with any networked PC by using the new IP address.
Model 9183 Instruction Manual
Page 3-5
3.1.3
Default and Recommended Configurations
The factory default configuration settings were chosen for ease of initial setup. Refer to the
recommended settings listed here as applicable for your unit. The web browser user interface
and the command line interface allow “Admin” users with full function read/write privileges
(such as setting up the unit’s network settings) and “Config” users possessing a subset of Admin
privileges (such as no access to network settings, but access to the front panel clock setup).
Configuration
Default
Recommended
Where Enabled
HTTP
Enabled
Disabled
Web User Interface or
Command Line
Interface
HTTPS
SNMP
NTP
Console Port
Telnet
SSH
FTP
SCP
SFTP
Enabled
– Using customer-generated certificate and key or default
Spectracom self-signed certificate and common public/private key
SSH/SCP/SFTP enabled with unit unique 1024 bit keys
Disabled or
Enabled with:
– SNMP v3 w/ encryption*
Disabled
and
–Host IPs identified for host
restriction
Enabled
Enabled
– Use MD5 authentication
– With no
with user-defined keys
MD5 Values Entered
Command Line Interface
Available
– Unless dial-out modem
Available
connected
(uses this port)
Disabled
Enabled
– Use SSH instead
Enabled (default keys provided)
Enabled
File Transfer
Disabled
Enabled
– Use SFTP or SCP
Available
Available
Available
Available
Web User Interface
Web User Interface
Web User Interface
Not Applicable
Web User Interface
Web User Interface
Web User Interface
Not Applicable
Not Applicable
Table 3-2: Default and Recommended Configurations
*We recommend secure clients use only SNMPv3 with authentication for secure installations.
Page 3-6
Model 9183 Instruction Manual
3.2
Login
The default mode for the web browser user interface is Read only. Any user can view the unit’s
configuration and status logs without the ability to make changes to the configuration. There are
two available login modes that require the user to know a login password:
Configuration Mode allows non-critical system changes.
Administrator Mode allows full control over all parameters. This mode should only be used by
advanced users. Changes made while in this mode may be detrimental to the proper operation of
the NetClock.
Note: Only one user is allowed into the web browser user interface at a time. If you try to access
the web browser user interface with someone else already in the browser, a screen will
display the IP address of the computer that is currently accessing the browser.
Refer to Figure 3-2 for a sample list of the login permission requirements. This list is also
displayed on the web browser user interface screen under the login mode buttons.
Note: For security reasons, the Admin and Config mode login lasts for 15 minutes or until the
NetClock is rebooted (Whichever occurs first). You will be exited out of the login after 15
minutes as the connections reset every 15 minutes.
Model 9183 Instruction Manual
Page 3-7
Figure 3-2: Log-in Permissions
CAUTION: The Administrator login provides the most power to change settings but an
erroneous entry could cause the NetClock to malfunction or not perform within specifications.
Only technicians trained in NetClock operations should be given access to the Administrator
mode.
Page 3-8
Model 9183 Instruction Manual
Chose the “administrator mode” to login as admin mode or chose “configuration mode” to login
as the config mode. Figures 3.1-2 and 3.1-3 display the appropriate login screen for the desired
login mode. Type the password for the mode selected. Note that the password is capital-letter
sensitive.
Figure 3-3: Configuration mode Log-in
Figure 3-4: Administrator mode Log-in
No Password?
That’s OK; you can still view the unit’s configuration settings in the read-only mode.
Model 9183 Instruction Manual
Page 3-9
Default Passwords
The default access passwords for the Configuration and Administrator Modes are:
Username: config
Username: admin
Password: config12
Password: admin123
For security reasons, we recommend you change the passwords and don’t lose them! If the
passwords are written down, they should be stored in a secure location such as a safe for later
retrieval by authorized personnel.
Once you have access to the settings web pages, you can set up each page.
3.2.1
To Change the Default Login Password Values
For security reasons, the account passwords cannot be changed using either the web browser user
interface or telnet command. Password changes must be made using the RS-232 Serial Setup
Interface connection on the rear panel. To change the account passwords, connect to the Serial
Setup Interface with a straight-thru serial cable. Using HyperTerminal, Procomm or any other
terminal emulator, login as admin using the current password. At the command prompt, type the
following:
To change the admin password, type:
sec password admin <enter>
To change the config password, type:
sec password config <enter>
The unit will then ask you to type in the old password and then to
type the new password (twice).
Example:
Type:
Response:
Type:
Response:
Type:
Response:
Type:
Response:
Type:
Response:
sec password <enter>
Account:
[current account name] <enter>
Old Password:
[current password for this account] <enter>
New Password:
[New password for this account] <enter>
New Password (again):
[New password for this account] <enter>
New Password set
For additional information on the sec command, refer to the software command appendix (sec
command).
Page 3-10
Model 9183 Instruction Manual
NOTE: Always LOGOUT and EXIT CONNECTION TO THE PRODUCT prior to closing
the web browser user interface when you are finished viewing the NetClock settings. For
security reasons, only one connection session is supported at any one time, so this ensures that a
new session can be activated immediately. If you don’t log out or exit the connection, you will
have to wait a time-out period or reset the unit to begin a new session.
3.2.2
To reset the current Login Password Values back to the factory default
values
Once the config and admin passwords have been changed from their default factory values, the
passwords can always be changed again in the future to new desire values as long as the current
passwords are still known (Refer to Section 3.1.4). However, the changed passwords may not be
known by the current user so the procedure to change the passwords described in section 3.1.4
will not be available.
If the current admin level password is unknown, both of the config and admin level passwords
can be reset to the factory defaults and then changed to the desired passwords. Perform the
following to reset the passwords back to the factory defaults to allow the passwords to be edited.
Connect to the Serial Setup Interface with a standard straight-thru serial cable and a PC running
HyperTerminal or Procomm (As described in Section 3.1.1).
With “Spectracom Login:” displayed, type defaults <enter> (If the login prompt is not
displayed, hit the enter key).
When the NetClock prompts for “Password:” just hit the enter key (Don’t enter a password).
The unit will respond with “passwords reset”. The admin password is now set back to
admin123 and the config password is now set back to config12.
Using these current password values, follow the procedure in Section 3.2.1 to change these
passwords to the desired values.
Model 9183 Instruction Manual
Page 3-11
3.3
3.3.1
Alarms
Alarm Outputs
The operational status of the NetClock can be monitored via the condition of its alarms. The
alarm states may be obtained using any of the following mechanisms:
Timer/Alarm Relays output connector
For detailed information about the rear panel connectors, see the “Rear Panel Functions” section.
For detailed information about configuring the relays to signal alarms, see Section 5.3.1.
3.3.1.1
System Status displayed on a web browser user interface
Dynamic system information including the current state of the alarms and time sync status can be
obtained by clicking “Status & Log” along the bottom of the main browser screen, followed by
clicking “System Status” on the left side of the screen. The alarm status is displayed in a table
labeled “Dynamic System Information”.
3.3.2
Alarm log
Alarm transition information is recorded in the alarm log.
An alarm is asserted whenever any of the following conditions exist:
Time Sync Alarm:
The period of time allotted for operation without tracking a
satellite has expired. Factory default period is 2 hours. This is a
Major alarm.
GPS Receiver Fault:
The CPU is unable to communicate with the GPS receiver. This is
a Major alarm.
Frequency Error:
Measured oscillator frequency error exceeds 1 x 10-7. This is a
Major alarm.
Power Failure:
The NetClock has lost power. This is both a Major and Minor
alarm.
Antenna Problem:
The antenna sense circuitry warns when the antenna is not
connected or a cable short or open is detected. This is a Minor
alarm.
Page 3-12
Model 9183 Instruction Manual
Oscillator Adjust:
Warns that the TCXO (Standard) or OCXO (Option 5) time base
oscillator requires an adjustment to maintain operation within
specifications. This is a Minor alarm.
An alarm is asserted whenever any of the following conditions exist AND the alarm has been
enabled on the alarm setup screen via a web browser user interface:
User-defined Alarm:
The user-specified period of time allotted for operation while
tracking less than a user-specified number of satellites has expired.
This can be a Major and/or Minor alarm.
Software Fault:
One or more software sub-systems has experienced a major runtime error. This is a Major alarm.
Figure 3-5: Alarm Setup Screen
User-defined alarms are configured using the Alarm Setup screen (Figure 3-5) from the web
browser user interface. The Alarm Setup screen may be viewed by clicking “System Setup”
along the bottom of the main browser screen, followed by clicking “Alarm” on the left side of
the screen. The default is a major alarm for tracking less than 1 satellite for 5 seconds.
NOTE: The Alarm Setup screen will not allow modification of any of the fields unless you have
logged into the system in either configuration mode or administration mode.
Clicking the check box to the left of a particular user-defined alarm will enable that alarm
condition. Each alarm condition may be set to exist for a specified duration before activating the
alarm. This is done by filling in the Timeout fields directly beneath the alarm condition.
Model 9183 Instruction Manual
Page 3-13
3.4
3.4.1
Event Timer
Configuring the Event Timer
The web browser user interface allows for the configuration of 128 events that can turn any one
of the event timer relays on or off. Make sure the rear panel relay that is going to be associated
with an event is configured to be the event timer relay in order to use this feature (see Section
3.13.1 for details on relay configuration).
To configure the events:
Connect to the web browser user interface. Login to configuration mode (or administration
mode).
Along the bottom of the interface select Relay Setup.
Along the left hand side select Event Timer Relay.
Figure 3-6: Event Timer Relay Screen
A new page will load. This is where the user specifies which event to edit/view. If any events are
already configured, they will be displayed by event number on this page. There are no
requirements on the order of the events; each one is completely independent of the others. Enter
the number of the event that you wish to edit/view and click the Edit/View button.
Now a page that displays the settings of the selected event appears and if logged in to
configuration mode (or administration mode) the settings can be changed.
Page 3-14
Model 9183 Instruction Manual
Choose a Time Zone
On the left side pane, select “Set Event Clock”. Choose an already defined Clock (Time Zone)
or define a new one. See Section 3.5 for more details on Local System Clock settings.
Note: All times entered for the Event Timers will use the same Local System Clock reference for
Time Zone and DST rules. It is best to choose this reference first before entering your schedule.
Figure 3-7: Event Timer Relay Screen
Model 9183 Instruction Manual
Page 3-15
Relay#:
Select the relay number that the event is to be associated with.
Enabled/Disabled/Delete:
If the event is enabled, the event will occur when scheduled. If the
event is disabled, it will not occur at the scheduled time, but will
still appear in the list of scheduled events on the previous page. If
the event is deleted, all fields of event are cleared and it is removed
from all event lists.
ON/OFF:
Each event can turn the specified event timer relay on or off.
The next section of the page describes when the event will occur and how often it will occur. The
relay can be set to occur hourly, daily, weekly, monthly, and yearly.
Hourly:
The event will happen every hour at the minute, second, and
millisecond that is specified (within 100 milliseconds).
Daily:
The event will happen every day at the hour, minute, second, and
millisecond specified (within 100 milliseconds).
Weekly:
The event will happen every week at the weekday, hour, minute,
second, and millisecond specified (within 100 milliseconds).
Monthly:
The event will happen every month at the day of month, hour,
minute, second, and millisecond specified (within 100
milliseconds). If the day is set to be a day that isn't in short months,
the event will happen on the last day of the short months.
Yearly:
The event will happen every year at the month, day of month,
hour, minute, second, and millisecond specified (within 100
milliseconds). If the month and day of month are programmed for
February 29th (this can only be done while currently in a leap
year), the event will happen on March 1st on non-leap years and
February 29th on leap years.
If configuring, clicking the submit button will save the settings. The reset button undoes any
changes that were made before the submit button is clicked.
Page 3-16
Model 9183 Instruction Manual
Example: Program event relay #3 to turn on at 5:00PM (Eastern Standard Time) for five seconds
every day.
Get to the Event Timer Relay page and “Edit/View” event 1.
Configure the event as relay #3, enabled, and to turn the event relay on daily at 22:00:00.000.
Click the submit button.
If all the information was correctly entered, the “Event Scheduler update successful.” message
will appear.
Click Event Timer Relay and the newly configured event will appear in the list of configured
events.
“Edit/View” event 2.
Configure the event as relay #3, enabled, and to turn the event relay off daily at 22:00:05.000.
Click the submit button.
If all the information was correctly entered, the “Event Scheduler update successful.” message
will appear.
Click Event Timer Relay and the newly configured events will appear in the event list.
To view the events:
Connect to the web browser user interface. No login is needed to just view the events.
Along the bottom of the interface select Relay Setup.
Along the left hand side you have two options to view the events:
Event Timer Relay:
Selecting this option will display all events that are either, enabled
or disabled. The events are ordered by event number (1-128).
Current Event Schedule:
Model 9183 Instruction Manual
Selecting this option will display a list of only enabled
events. The events are ordered by next occurrence.
Page 3-17
3.5
Front Panel Display
The NetClock has two front panel LCD displays. Both of these front panel displays are
separately configurable. This section explains how to configure the optional front panel
displays.
Using the web browser user interface to configure the Front Panel Display:
You can change the Front Panel Display formats to suit your needs. Both of the displays are
independently programmable. The left side display is LCD 1, the right side is LCD 2.
Figure 3-8: Front Panel Display Screen
LCD # Display Format:
Each of the two LCD Displays has a user selectable Display Format. This display format defines
the type of information provided the user. The following is description of the nine available
display options:
None - No Display is shown, LCD is blank.
Product - Product Name, Hardware Revision and Firmware Revision is shown for several
seconds after which the default display is resumed.
Revision - Firmware Revision of Data Port outputs is shown for several seconds after which the
default display is resumed.
Time View - Time is displayed with Large Font for Hours:Minutes and Small Font for Seconds.
Time - Time is displayed in Large Font for Hours:Minutes:Seconds.
Page 3-18
Model 9183 Instruction Manual
Day of Year - Day of Year (DOY) is displayed in Large Font.
Date - Date is displayed in a user selectable format in a Large Font.
Date-Time - Date and Time are displayed in a Small Font. Date is displayed in the user selected
format.
DOY-Time - Day of Year and Time are displayed in a Small Font.
LCD1 Display Format Setup:
This field allows the user to select the Display Formats described above to be used for this LCD
screen.
LCD2 Display Format Setup:
This field allows the user to select the Display Format described to be used for this LCD screen.
Date Format Setup:
This field allows the user to select the Date Format. The available choices are as follows (Where
YY=Year, MM=Month, DD=Day):
MM_DD_YY, DD_MM_YY, YY_MM_DD, MM_DD_YYYY, DD_MM_YYYY,
YYYY_MM_DD
Time Format Setup:
This field allows the user to select 12 Hour or 24 Hour time format.
Font Setup:
This field allows the user to select one of the supported Fonts for the Numeric display fields for
Date, Time and Day of Year. The available choices are as follows:
Arial - Arial style font (This is the factory default)
Mark - Curved, strong font
LED - LED Style rectangular thick font
Thin - LED Style rectangular thin font
System Clock Setup:
This field allows the user to manually select which Time Zone Offset to use when displaying
time. See Section 3.5 on Local System Clocks.
Note: When selecting a System Clock for time to be displayed on one LCD display and date on
the other LCD display, use the same System Clock selection in both LCD displays (If setting the
time to local time, change the date to local time as well). Otherwise the “new day” time and
“new date” rollover may not coincide with each other. (One will occur at a different time than
the other).
Model 9183 Instruction Manual
Page 3-19
To configure a product's Front Panel Display via web browser user interface:
Connect to the web browser user interface after booting the unit.
Login to configuration- or administrator-level mode if changes are desired.
Choose "Interface Setup" from the bottom frame, and the “Front Panel Display” from the left
frame.
All fields will display the current system settings. At the bottom of the frame, clicking Reset will
revert any changes made at this window since last pressing Submit.
Example 1: To configure the Front Panel Display to show Day of Year and Time View displays
using an Arial font while displaying 12 Hour, Local time.
Connect to the web browser user interface of the unit.
Login to configuration- or administrator-level mode and browse to the Front Panel Display page.
Select 'Day of Year' from the LCD1 Display Format pull-down menu.
Select 'Time View' from the LCD2 Display Format pull-down menu.
Select '12 Hour' from the Time Format pull-down menu.
Select ‘Arial’ from the Font pull-down menu.
Select the Time Zone by selecting the appropriate System Clock in the pull-down menu.
Review the changes made and click Submit. The browser will display the status of the change.
Page 3-20
Model 9183 Instruction Manual
3.6
GPS
This section contains information on configuring the GPS receiver.
How to set up the GPS receiver:
Using the web browser user interface, you will find the GPS configuration web page under the
System Set up category. The GPS configuration web page is designed to allow a user to
configure the GPS receiver to provide more accurate results and faster start up, but you do not
have to configure them for the unit to run properly.
Figure 3-9: GPS Set-up Screen
Model 9183 Instruction Manual
Page 3-21
ANTENNA CABLE DELAY:
To set this value, you must be logged into the unit with the Configuration or Administrator
Mode. By setting the correct antenna cable delay, the on-time point is offset by the delay value
to compensate for the antenna and in-line amplifier delays. Under typical condition, the expected
cable and amplifier delays are negligible. You can calculate the delay based upon the
manufacture’s specification.
The range of the cable delay is from 0 to 999999 nanoseconds, the default value is 0
nanoseconds, and the resolution is 1 nanosecond.
The following formula is used to calculate the cable delay:
D = (L * C) / V
Where:
D = Cable delay in nanoseconds
L=
Cable length in feet
C=
Constant derived from velocity of light: 1.016
V=
Nominal velocity of propagation expressed as decimal, i.e. %66 = 0.66 Value is
provided by cable manufacturer.
Note: The antenna cable is delay is nominal and beyond the accuracy specs of the GPS receiver.
The antenna cable delay does not normally need to be set.
LOCATION OF THE UNIT:
You can read the current location of the unit calculated by the GPS receiver without logging in.
The GPS receiver will automatically update this field when it has a Position Fix. Check the GPS
Signal Status web page, and if the status is “Position Fix”, then the location shown on this page
is the right location.
You can only write the new location value to the unit when logged in under the Configuration or
Administrator mode. The location input by the user may only help to speed up the time to first
fix during the initial installation. The unit will automatically check the status of the GPS receiver
after receiving the location input from the user, then based on the status of the GPS receiver, the
unit will either tell the user that the GPS receiver already has finished the first fix and the input
was abandoned, or send the location to the GPS receiver.
3.6.1
Set System Mode
The system supports two modes of operation known as single satellite mode and standard mode.
Use single satellite mode if you are using a window mount antenna and cannot receive at least
four satellites. This will switch the qualification algorithm used, and allow the system to operate
with a fewer number of satellites, but the accuracy and capabilities of the optional Rubidium
(Option 4) and OCXO (Option 5) oscillators will be decreased because of the poor GPS antenna
visibility.
Page 3-22
Model 9183 Instruction Manual
Caution: Single Satellite mode compromises the accuracy of the NetClock and the full
capabilities of the optional OCXO and Rubidium oscillators. Always use standard
mode if you are using a roof mount antenna and can get at least four satellites. This is
the factory default.
To set the System Mode using the web browser user interface:
Using a PC with a web browser connect to the product by typing in the product’s IP address into
the address window of the browser as follows: http://10.10.200.1 (or your product’s IP address).
Press the “Enter Main Page” button.
Select the login link on the top right corner to login as administrator.
On the lower menu line select the “System Setup” item.
On the left side menu select the “Set System Mode” item.
The setup window for system mode is then displayed in the center of the screen.
Figure 3-10: Set System Mode
Model 9183 Instruction Manual
Page 3-23
3.6.2
GPS Signal Status
HOW TO READ THE GPS SIGNAL STATUS:
The GPS Signal Status pages provide insight into the GPS receiver’s operation and the signal
quality from the satellites. This information is useful to verify proper antenna placement and
receiver performance during installation and later troubleshooting.
The overall tracking status, position solution and a table containing individual satellite data is on
this page.
Figure 3-11: GPS Signal Status Setup Screen
Page 3-24
Model 9183 Instruction Manual
Tracking X satellites:
Where: X = Number of satellites currently tracking (0 – 12)
GPS Status = SSSS
Where: SSSS = Receiver Status
Acquiring satellites is possible if the GPS Receiver is still looking for qualified satellites.
Bad Geometry is possible if the GPS Receiver is tracking qualified satellites, but the number of
satellites or their relative position is not sufficient for calculating position.
2D Fix is possible if the receiver is tracking at least three qualified satellites.
3D Fix is possible if the receiver is tracking at least four qualified satellites.
Position Hold is possible if the GPS receiver has collected enough information to determine the
location of the GPS receiver.
DOP = ##.#
Where: DOP means dilution of precision. The range is from 00.0 to 99.9
This value indicates the degree of uncertainty of a Position Fix due to the geometry of the
Satellites used in the solution. The lower the DOP value, except 0, the lower the degree of
uncertainty.
Antenna Sense = SSSSS
Where: SSSSS reports the status of the antenna sense circuit. There are three main flags (OK,
Over Current, and Under Current). The three flags are described below:
OK Flag
The OK flag is displayed if both antenna sense bits are cleared. This indicates that the antenna is
drawing current within the normal range.
Over Current Flag
This flag is displayed if the over current bit is set. This indicates that too much current is being
drawn through the circuit and the overload protection circuit is limiting the feed current. The
receiver will attempt to continue the normal acquisition and tracking process regardless of the
antenna status.
Under Current Flag
This flag is displayed if the undercurrent bit is set. This indicates that little or no current is being
drawn through the circuit, which may be due to a disconnected antenna, a severed antenna cable
or a damaged antenna. The receiver will attempt to continue the normal acquisition and tracking
process regardless of the antenna status.
Undercurrent indication < 8 mA
Overcurrent indication > 80 mA
Model 9183 Instruction Manual
Page 3-25
Note: This condition will also be present if a GPS antenna splitter that does not contain
a load to simulate an antenna being present is being used.
Latitude = [N:S][DD MM SS.SSSS]
Longitude = [E:W][DDD MM SS.SSSS]
Where: N = North latitude
S = South Latitude
E = East Longitude
W = West Longitude
D = Degree
M = Minute
S = Second
Quality = QQQQQ
Where: QQQQQ = Result of GPS qualification, either PASSED or FAILED. The GPS signal is
considered qualified when at least one satellite is received having a vehicle ID of at least 4 that
are available for Position Fix Usage while in the normal mode of operation (Or at least 1 satellite
that is available for position fix when the unit is single satellite mode).
Information on each satellite the receiver is currently tracking is presented in table form. The
table columns are described below:
CHANNEL = Channel Number of the GPS receiver, 1…12
VID = Vehicle (satellite) Identification Number, 1…37
MODE = Channel Tracking Mode,
Where:
0=
1=
2=
3=
4=
5=
6=
7=
8=
Code Search
Code Acquire
AGC set
Freq Acquire
Bit Sync Detect
Message Sync Detect
Satellite Time Available
Ephemeris Acquire
Avail for position
Note: Mode 8 is the normal state for a valid satellite in use
Page 3-26
Model 9183 Instruction Manual
STRENGTH = Signal strength value relative to the Signal to Noise Ratio [SNR]. Range:
0…255, the higher the number, the greater the receiver signal.
STATUS = Channel status flag. Convert the hexadecimal code word to binary to find the status
flag set.
Bit 11: Used for time
Bit 10: Differential Correction Available
Bit 9: Invalid Data
Bit 8: Parity Error
Bit 7: Used for Position Fix
Bit 6: Satellite Momentum Alert Flag
Bit 5: Satellite Anti-Spoof Flag Set
Bit 4: Satellite Reported Unhealthy
Bit 3-0: Satellite Accuracy as follows:
(Per para 20.3.3.3.13 ICD-GPS-200)
0000 (0) 0.00 <URA<=2.40
0001 (1) 2.40 <URA<=3.40
0010 (2) 3.40 <URA<=4.85
0011 (3) 4.85 <URA<=6.85
0100 (4) 6.85 <URA<=9.65
0101 (5) 9.65 <URA<=13.65
0110 (6) 13.65 <URA<=24.00
0111 (7) 24.00 <URA<=48.00
1000 (8) 48.00 <URA<=96.00
1001 (9) 96.00 <URA<=192.00
1010 (10) 192.00 <URA<=384.00
1011 (11) 384.00 <URA<=768.00
1100 (12) 768.00 <URA<=1536.00
1101 (13) 1536.00 <URA<=3072.00
1110 (14) 3072.00 <URA<=6144.00
1111 (15) 6144.00 <URA*
(* means No accuracy prediction is available – unauthorized users are advised to use the Space
Vehicle at their own risk.)
Model 9183 Instruction Manual
Page 3-27
Normal values for Status Field are
8A0
or
8A1
Which is 1000 1010 000x binary
Bit 11 = 1:
Bit 10 = 0:
Bit 9 = 0:
Bit 8 = 0:
Bit 7 = 1:
Bit 6 = 0:
Bit 5 = 1:
Bit 4 = 0:
Bit 3-0=low number:
Used for time
Differential Correction Not Available
Not Invalid Data
No Parity Error
Used for Position Fix
No Satellite Momentum Alert Flag
Satellite Anti-Spoof Flag Set
Satellite Reported as Healthy
Satellite is Accurate
Note: For assistance with GPS reception issues, refer to Section 0.
Page 3-28
Model 9183 Instruction Manual
3.7
Interface Setup
This section contains information on configuring the Remote and Serial ports.
To verify operation of either of the two Serial ports, refer to Section 0.
3.7.1
Configuration parameters for the Remote and Serial Interfaces
The NetClock has two RS-232 ports (also called Serial Ports) and two RS-485 ports (also called
Remote Output Ports) that support independent output of date/time stamps. The web browser
user interface is the method by which these can be configured, and the available options are
described below:
Baud Rate:
This is the speed at which this Interface will output data. Supported values are 1200, 2400,
4800, and 9600. 9600 baud is the default.
Data Format:
This is the Data Format in which date/time stamps are outputted. Available Formats are 00, 01,
02, 03, 04, 07, 08 and 90; and are described in detail in the "Data Format" section 6 . Format 00
is the default.
Note: Because Data Format 2 is ALWAYS a UTC output, it cannot have a Time Zone Offset or
Daylight Saving Time rule enabled. Conversion to Local Time is accomplished by the device
receiving Data Format 2. An error message will be generated if a Time Zone Offset or DST rule
is attempted when selected to Data Format 2.
Request Char (feature not available on RS-485 port):
If Multicast is selected, the unit will automatically broadcast once-per-second. If User Defined is
selected, the unit will only send data upon reception of the character in the textbox. The default
is the user-defined character 'T'.
Change this setting to Multicast if the external device needs to receive the tine stamp every
second (It does not send a request character to the Master Clock when it desires a time stamp).
System Clock:
This field allows the user to select which Local System Clock (Time Zone) to use when sending
data. The default is UTC. See Section 3.5 Local Systems Clocks for more information on how
to set these.
Model 9183 Instruction Manual
Page 3-29
3.7.1.1 To configure a product's Interface via web browser user interface:
Connect to the web browser user interface after booting the unit. Login to either configurationor administrator-level mode if changes are desired. Choose "Interface Setup" from the bottom
frame, and the desired port from the left frame. Serial Ports correspond to RS-232 outputs and
Remote Output Ports correspond to RS-485 outputs. All fields will display the current system
settings. At the bottom of the frame, clicking Reset will revert any changes made at this window
since last pressing Submit.
Figure 3-12: Interface Screen
Example 1: To configure an RS-232 port to run at 2400 baud, and output Format 90 to run in
Eastern Standard Time:
1. Connect to the web browser user interface of the unit.
2. Login to configuration- or administrator-level mode and browse to the Serial Port page.
3. Select '2400' from the Baud Rate pull down menu.
4. Select '90' from the Data Format pull down menu.
Page 3-30
Model 9183 Instruction Manual
5. Select a Local System Clock defined for the proper time zone.
6. Review the changes made and click Submit. The browser will display the status of the
change.
3.7.2
“Set To Defaults” web browser user interface
The “Set To Defaults” web browser user interface screen is used to return the Serial Port 1,
Serial Port 2, Remote Port 1, Remote Port 2, Front Panel Displays, IRIG and the Frequency
Outputs back to their product defaults. To return these configurations back to the factory
defaults values, login as the administrator mode, select “set to defaults” on the bottom blue bar,
and the press the “Restore to factory defaults” button.
Model 9183 Instruction Manual
Page 3-31
Figure 3-13: Restore Interface setup back to factory defaults
Page 3-32
Model 9183 Instruction Manual
3.8
IRIG Port
IRIG is an acronym for Inter-Range Instrumentation Group. In the late 1950’s this group created
a series of time code standards suitable for use with recording oscillographs, magnetic tape and
real time transmission. Each IRIG code specifies a carrier frequency that is modulated to encode
date and time, as well as control bits to time stamp events. Initially, IRIG applications were
primarily military and government associated. Today, IRIG is commonly used to synchronize
voice loggers, recall recorders and sequential event loggers found in emergency dispatch centers
and power utilities.
The NetClock is able to provide an IRIG B or IRIG E code in amplitude modulated (AM) or
pulse width coded (TTL) formats. A signature control feature may be enabled for any IRIG
output. Signature control removes the modulation code when a Time Sync Alarm is asserted.
Refer to section 3.8.1 for a detailed description of the IRIG B Format and section 3.8.2 for a
detailed description of the IRIG E Format.
Figure 3-14: IRIG Screen
Model 9183 Instruction Manual
Page 3-33
To configure a product's IRIG Port via web browser user interface:
Connect to the web browser user interface after booting the unit.
Login to configuration- or administrator-level mode if changes are desired.
Choose "Interface Setup" from the bottom frame, and “IRIG” from the left frame.
IRIG configuration options include: Format, Amplitude Control, Signature Control, Time Zone,
and DST corrections.
Format: choose the format, level and carrier desired.
Amplitude Control: the peak-to-peak output voltage level into a 600 ohm load is adjusted by
entering a digital control value in this field. The level adjustment has no effect on TTL outputs,
only on AM formats. The table below shows typical output levels for digital control values from
0 – 255.
Note: These values are only nominal and may vary from unit to unit. To precisely adjust the
level, connect an oscilloscope to the output connector when adjusting.
Peak-to-Peak Voltage
IRIG Peak-to-Peak Voltage
7
6
5
4
3
2
1
0
0
50
100
150
200
250
300
Digital Amplitude Control Values
Figure 3-15: IRIG Output Level
Page 3-34
Model 9183 Instruction Manual
Signature Control: when set to Sync, the modulation is removed when the Time Sync Alarm is
asserted. When set to None, the modulation will be present even if the Time Sync Alarm is
asserted.
Time Zone Setup:
This field allows the user to manually select which time zone to use when displaying time. The
default is UTC.
DST Setup:
Four options for Daylight Savings Time are available here.
There is no DST observed. This is the default.
Manually specify a pre-defined DST rule.
- Europe
-North America
-Australia-1
-Australia-2
Define a DST rule by the [n]th [day of week] in [month] method.
Define a DST rule by the [day of month] in [month] method.
.
Model 9183 Instruction Manual
Page 3-35
3.8.1
IRIG B Output
Figure 3-16: IRIG B Time Code description
Page 3-36
Model 9183 Instruction Manual
The IRIG B code contains the Binary Coded Decimal (BCD) time of year, Control Function (CF)
field and the Straight Binary Seconds time of day. The following figure illustrates the IRIG B
data structure. The BCD time of year provides the day of the year, 1-366, and the time of day
including seconds. The hour of the day is expressed in 24 hour format. The SBS time is the
number of seconds elapsed since midnight. The Control Function field contains year information
and a time sync status bit.
1.
2.
Time frame: 1.0 seconds.
Code digit weighting:
A.
Binary Coded Decimal time-of-year.
Code word - 30 binary digits.
Seconds, minutes hours, and days.
Recycles yearly.
B.
Straight Binary Seconds time-of-day.
Code word - 17 binary digits.
Seconds only, recycles daily.
3.
Code word structure:
BCD: Word seconds digits begin at index count 1. Binary coded elements occur between
position identifier elements P0 and P5 (7 for seconds, 7 for minutes, 6 for hours, and 10 for
days) until the code word is complete. An index marker occurs between decimal digits in each
group to provide separation for visual resolution. Least significant digit occurs first.
CF:
IRIG formats reserve a set of elements known as Control Functions (CF) for the encoding
of various control, identification, or other special purpose functions. IRIG B has 27 Control
Functions located between elements 50 and 78. The NetClock uses the Control Functions to
encode year information and time sync status.
Table 3-3 below lists the Control Function Field and each element's function.
Element 55 is the time sync status bit. Element 55 is a Binary 1 when the front panel time sync
lamp is green, and a Binary 0 when the lamp is red.
Year information consists of the last two digits of the current year (i.e. 97, 98, 99 etc.). Elements
60 through 63 contain the binary equivalent of year units. Elements 65 through 68 contain the
binary equivalent of tens of years. In keeping with IRIG formats, the least significant bit occurs
first. All unused Control Functions are filled with a space (Binary 0).
SBS: Word begins at index count 80. Seventeen Straight Binary Coded elements occur with a
position identifier between the 9th and 10th binary coded elements. Least significant digit
occurs first.
4.
Pulse rates:
Element rate: 100 per second.
Position identifier rate: 10 per second.
Reference marker rate: 1 per second.
Model 9183 Instruction Manual
Page 3-37
5.
Element identification: The "on time" reference point for all elements is the pulse
leading edge.
Index marker (Binary 0 or uncoded element): 2 millisecond duration.
Code digit (Binary 1): 5 millisecond duration.
Position identifier: 8 millisecond duration.
Reference marker, 1 per second. The reference marker appears as two consecutive position
identifiers. The second position identifier marks the on-time point for the succeeding code word.
6.
Resolution:
Pulse width coded signal: 10 milliseconds.
Amplitude modulated signal: 1 millisecond.
7.
Carrier frequency: 1 kHz when modulated.
C.F.
ELEMENT # DIGIT #
FUNCTION
50
1
Space
51
2
Space
52
3
Space
53
4
Space
54
5
Space
55
6
Time Sync Status
56
7
Space
57
8
Space
58
9
Space
59
PID P6 Position Identifier
60
10
Years Units Y1
61
11
Years Units Y2
62
12
Years Units Y4
63
13
Years Units Y8
64
14
Space
65
15
Years Tens Y10
66
16
Years Tens Y20
67
17
Years Tens Y40
68
18
Years Tens Y80
69
PID P7 Position Identifier
70
19
Space
71
20
Space
72
21
Space
73
22
Space
74
23
Space
75
24
Space
76
25
Space
77
26
Space
78
27
Space
Table 3-3: IRIG B Control Function Field
Page 3-38
Model 9183 Instruction Manual
3.8.2
IRIG E Output
The IRIG E code contains the Binary Coded Decimal (BCD) time of year and Control Functions.
Figure 3-17 illustrates the IRIG E data structure. The BCD time of year provides the day of year,
1-366, and time of day to tens of seconds. The hour of the day is expressed in 24 hour format.
The Control Function field includes a time sync status bit, year information and SBS time of day.
1.
Time frame: 10 seconds.
2.
Code Digit Weighting:
Binary Coded Decimal time of year.
Code world - 26 binary digits.
Tens of seconds, minutes, hours, and days.
Recycles yearly.
3.
Code Word Structure: BCD word tens of seconds digits begin at index count 6. Binary
coded elements occur between position identifier elements P0 and P5 (3 for seconds, 7 for
minutes, 6 for hours, and 10 for days) until the code word is complete. An index marker occurs
between decimal digits in each group to provide separation for visual resolution. Least
significant digit occurs first.
4.
Control Functions: IRIG formats reserve a set of elements known as Control Functions
(CF) for the encoding of various control, identification, or other special purpose functions. IRIG
E has 45 Control Functions located between elements 50 and 98. The NetClock uses the Control
Function field to encode year data, time sync status, and SBS time data. Table B-2 lists the
Control Function Field and each element's function.
Element 55 is the time sync status bit. Element 55 is a Binary 1 when the front panel time sync
lamp is green, and a Binary 0 when the lamp is red.
Year information consists of the last two digits of the current year (i.e. 98, 99, etc.). Elements 60
through 63 contain the binary equivalent of year units. Elements 65 through 68 contain the
binary equivalent of tens of years. In keeping with IRIG formats, the least significant bit occurs
first.
Elements 80 through 97 are encoded with the Straight Binary Seconds (SBS) time data. The
SBS time data is incremented in 10-second steps and recycles every 24 hours.
5.
Pulse rates:
A.
B.
C.
Element rate: 10 per second.
Position identifier rate: 1 per second.
Reference marker rate: 1 per 10 seconds.
6.
Element identification: The "on time" reference point for all elements is the pulse
leading edge.
Index marker (Binary 0 or uncoded element): 20 millisecond duration.
Model 9183 Instruction Manual
Page 3-39
Code digit (Binary 1): 50 millisecond duration.
Position identifier: 80 millisecond duration.
Reference marker: 80 millisecond duration, 1 per 10 seconds. The reference marker appears as
two consecutive position identifiers. The second position identifier or reference marker is the ontime point for the succeeding code word.
Page 3-40
Model 9183 Instruction Manual
Figure 3-17: IRIG E Time Code description
Model 9183 Instruction Manual
Page 3-41
BIT #
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
Page 3-42
CF ELEMENT #
FUNCTION
1
SPACE
2
SPACE
3
SPACE
4
SPACE
5
SPACE
6
TIME SYNC STATUS
7
SPACE
8
SPACE
9
SPACE
PID P6 POSITION IDENTIFIER
10
YEAR UNITS Y1
11
YEAR UNITS Y2
12
YEAR UNITS Y4
13
YEAR UNITS Y8
14
SPACE
15
YEAR TENS Y10
16
YEAR TENS Y20
17
YEAR TENS Y40
18
YEAR TENS Y80
PID P7 POSITION IDENTIFIER
19
SPACE
20
SPACE
21
SPACE
22
SPACE
23
SPACE
24
SPACE
25
SPACE
26
SPACE
27
SPACE
PID P8 POSITION IDENTIFIER
28
SBS 20
29
SBS 21
30
SBS 22
31
SBS 23
32
SBS 24
33
SBS 25
34
SBS 26
35
SBS 27
36
SBS 28
PID P9 POSITION IDENTIFIER
37
SBS 29
38
SBS 210
39
SBS 211
Model 9183 Instruction Manual
93
94
95
96
97
98
99
40
SBS 212
41
SBS 213
42
SBS 214
43
SBS 215
44
SBS 216
45
SPACE
PID P0 POSITION IDENTIFIER
Table 3-4: IRIG E Control Function Field
Model 9183 Instruction Manual
Page 3-43
3.9
Local System Clocks Setup
You can define up to 5 Local Clocks or Time Zones to be used with any of the Remote, Serial,
IRIG interfaces, event timers, or front panel displays.
Once defined, these Local Clocks can be used by any interface and will cause that interface to be
automatically updated for its Time Zone and DST (Daylight Saving Time) conditions. To
configure a Local Clock:
Note: The Local clock is not available for the front panel Ethernet output per the NTP
specifications. NTP ALWAYS provides UTC time. Each client PC on the network will
handle corrections for local time).
Connect to the web browser user interface after booting the unit. Login to administrator-level
mode if changes are desired. Choose "System Setup" from the bottom frame, and the “Local
System Clocks” from the left frame and you will see this screen:
Figure 3-18: Local System Clocks Setup Screen
Choose “Create/New” and click on the “Submit” button. This screen will appear ():
Page 3-44
Model 9183 Instruction Manual
Figure 3-19: Time Zone and DST Setup Screen
Enter any name you wish for the Local Clock Name, up to 20 characters long. It can be any
meaningful name that helps you know your point of reference (example: New York, Wall Clock
in Bldg27, Eastern HQ, etc.)
Time Zone Setup:
This field allows the user to manually select which time zone to use when sending data. The
default is UTC.
DST Setup:
Four options for Daylight Savings Time are available here. There is no DST observed. This is
the default.
Manually specify a pre-defined DST rule.
Europe
North America
Australia-1
Model 9183 Instruction Manual
Page 3-45
Australia-2
Define a DST rule by the [n]th [day of week] in [month] method.
Define a DST rule by the [day of month] in [month] method.
Example 1: To create a Local System Clock to UTC+1 with no DST rule:
Connect to the web browser user interface of the unit.
Login to administrator-level mode and browse to the System Setup, Local System Clocks page.
Select Create/New and assign the clock a meaningful name.
Click on the “Manually Defined UTC Offset” button.
Select 'UTC+1:00' from the Time Zone pull down menu.
Select the 'No DST rule' radio button.
Review the changes made and click Submit. The browser will display the status of the change.
Example 2: To configure an RS-485 port to go in DST at 2:00am on the 3rd Friday in April and
out of DST at 1:00am on the 1st Sunday in October, with a DST change of 1 hour:
Connect to the web browser user interface of the unit.
Login to administrator-level mode and browse to the System Setup, Local System Clocks page.
Select Create/New and assign the clock a meaningful name.
Under “DST Setup”, select the 'Manually defined by week and day' radio button.
Enter/select '3rd', 'Friday', 'Apr', '2', and '0' in the DST In Date section.
Enter/select '1st', 'Sunday', 'Oct', '1', and '0' in the DST Out Date section.
Enter '1' and '0' in the corresponding fields of the Change Amount section.
Review the changes made and click Submit. The browser will display the status of the change.
Browse to the “Interface Setup, Remote Port” page and Select the proper System Clock.
Page 3-46
Model 9183 Instruction Manual
Example 3: To change a Local System Clock to be in DST at 1:01am on October 2nd and out of
DST at 2:00am on April 17th, with a DST change of 30 minutes:
Connect to the web browser user interface of the unit.
Login to administrator-level mode and browse to the System Setup, Local System Clocks page.
Select the desired Clock Name.
Select the 'Manually defined by month and day' radio button.
Enter/select ‘2’, ‘Oct’, ‘1’, and ‘1’ in the DST In Date section.
Enter/select ‘17’, ‘Apr’, ‘2’, and ‘0’ in the DST Out Date section.
Enter ‘0’ and ‘30’ in the corresponding fields of the Change Amount section.
Review the changes made and click Submit. The browser will display the status of the change.
3.9.1
Time Zone and DST
How to set up Time Zone and DST Rule:
The unit will allow you to define different Time Zone and DST rules for different Interfaces and
a front panel display (Option 2 if so equipped). In order to use this feature properly, users have
to know the correct Time Zone Offset and DST rule for your area.
The general Time Zone and DST rule information can be found from the following web sites:
http://www.worldtimeserver.com/, http://webexhibits.org/daylightsaving/b.html.
Since the Time Zone and DST rules are set up for each Interface and front panel display
separately, you should click the “Interface setup” hyperlink, and then select the Interface you
want to modify. Then you will see the Time Zone setup and DST setup option on the web page.
Time Zone
Under the “TIME ZONE SETUP”, you will see two choices:
Automatically configure to unit’s physical locality
Manually defined UTC offset
Auto Time Zone
By selecting this option, the unit will compute the Time Zone Offset automatically based on the
location of the unit provided by GPS receiver.
If you select this feature before the GPS receiver completes the position calculation, a message
will be displayed to explain that this feature is not valid until the position is available.
If you select this feature after the GPS receiver determines its position, the computed Time Zone
Offset information will be shown.
Model 9183 Instruction Manual
Page 3-47
Note: Automatic Time Zone calculations are imprecise because the Time Zones are determined
by local political boundaries and may change often. This feature is made available as an aid
only.
To apply the computed Time Zone, select the check box for the desired Interface.
Manual Time Zone
A drop down box is provided for the choice. Left click the drop down box and select the time
zone offset you want to use.
Note: All of the Time Zone Offset drop-downs in the web browser user interface are configured
as UTC plus or minus a set number of hours. For Eastern, choose UTC–5, for Central, choose
UTC-6, for Mountain, choose UTC-7 and for Pacific, choose UTC-8.
DST rule
Under the “DST SETUP”, you will see four radio buttons. , The four options are “No DST rule,
always standard time”; “Manually defined by region”; “Manually defined by week and day”;
“Manually defined by month and day”.
No DST Rule, always standard time
This option should only be used when you do not want to apply any DST rule to this Interface
output.
Auto DST
This feature is designed to compute the DST rule automatically based on the location of the unit
provided by GPS receiver.
If you select this feature before the GPS receiver completes the position calculation, a message
will be displayed to explain that this feature is not valid until the position is available.
If you select this feature after the GPS receiver determines its position, the computed DST rule
information will be shown.
Note: Automatic DST calculations are imprecise because the rules for DST are determined by
local political boundaries and may change often. This feature is made available as an aid only.
To apply the computed DST rule, select the check box for the desired Interface.
Manually defined by region
Page 3-48
Model 9183 Instruction Manual
This option is recommended if you do not need to define a special rule. Under this option, there
is one drop down box. Left click the drop down box and you will see four regional choices:
“Europe”, “North America”, “Australia-1” and Australia-2”.
The official DST rules for these four regions are as follows:
Europe
Start: Last Sunday in March at 1am UTC
End : Last Sunday in October at 1am UTC
North America
Start: First Sunday in April at 2am local time
End : Last Sunday in October at 2am local time
Australia-1
Start: Last Sunday in October at 2am local time
End : Last Sunday in March at 3am local time
Australia-2
Start: First Sunday in October at 2am local time
End : Last Sunday in March at 3am local time
Manually defined by week and day
This option is provided for advanced users. You can input start time, end time and the hour to
change for the daylight saving. By selecting this option, the DST rule can be defined based on
the weekday, week, and month of the local time you defined for this Interface.
Manually defined by month and day
This option is provided for advanced users. You can input start time, end time and the hour to
change for the daylight saving. By selecting this option, the DST rule could be defined based on
the day and month of the local time defined for this Interface. If you select the February 29th as
the start time or end time, the unit will respond that the entry is an illegal date.
Model 9183 Instruction Manual
Page 3-49
3.10
Logs
The following table lists the available logs (along the top header of the table) and provides a
description and characteristics of each of below the corresponding log.
Alarm
Log
Purpose
Reports
any status
change of
Major or
Minor
alarms
(On/Off).
Where
Top of
left menu
under
Status &
Log tab in
Event
Relay Log
GPS
Qualification
Log
Operational
Log
Oscillator
Log
Reports any
change in
state (OPEN
or CLOSE)
of the event
relays, such
as for Major
or Minor
alarms, or
for
scheduled
events
programmed
by the user.
Next on
menu
Reports detailed
information
about GPS
signal, including
number of
satellites
tracked and for
how long.
Can be exported
as a .CSV file
via FTP.
Reports any
boot of the
unit, time
source
changes, and
sync
acquisition or
loss. All
system time
adjustments
are also shown
here.
Reports
startup at
power
cycle, and
any coarse
or fine
adjustment
of the
oscillator.
Lower on menu
Next on menu
Next on
menu
Per modem
activity,
about five
per dial
session
512 entries,
68
kilobytes
Per log
entry, first
in, first out
Per alarm or
scheduled
event.
Periodic, one
per hour
Per boot up or
system time
change
Periodic,
minimum
every 100
seconds
512 entries,
68 kilobytes
512 entries, 68
kilobytes
512 entries, 68
kilobytes
512 entries,
68 kilobytes
Per log
entry, first
in, first out
Per log entry,
first in, first out
Per log entry,
first in, first
out
Per log
entry, first
in, first out
Months
Months
21 days
Months
10-14 hours
Dialout
Log
(ModemOption 3)
Reports
any dial out
activity
performed
by the
modem,
such as dial
out times,
success or
failure, and
any time
adjustments
made as a
result.
Next on
menu under
Status &
Log tab in
web
web
browser
browser user
user
interface
interface
Update
frequency
Per alarm
state
change
Maximum
log size
512
entries, 68
kilobytes
Per log
entry, first
in, first
out
Months
Rollover
method
Log rollover
typical
Table 3-5: Descriptions of logs
Page 3-50
Model 9183 Instruction Manual
Note: The times indicated in all log entries are UTC (No correction for Local time or Daylight
Saving Time).
3.10.1 Display Alarm Log
To Display the Alarm log do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http://10.10.200.1 (or your IP address).
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Alarm Log" item. The Alarm History Log is then displayed in
the center of the screen. Each time a change in alarm status occurs an alarm log is created. An
alarm log includes the UTC time and date of the log, the alarm relay status and lists the
conditions causing the alarms. The alarm log is displayed one page at a time, and can be
navigated by using the scroll bar control on the right hand side.
Example response:
TIME= 10:17:19 DATE= 2000-03-21 STATUS CHANGE
ALARM RELAY= OFF
ACTIVE ALARMS: NONE
TIME= 13:51:29 DATE= 2000-05-05 STATUS CHANGE
ALARM RELAY= ON
ACTIVE ALARMS: MINOR
Antenna Problem
TIME= 15:51:30 DATE= 2000-05-05 STATUS CHANGE
ALARM RELAY= ON
ACTIVE ALARMS: MAJOR AND MINOR
TIME SYNC ALARM
Antenna Problem
TIME= 18:23:39 DATE= 2000-05-05 STATUS CHANGE
ALARM RELAY= ON
ACTIVE ALARMS: MAJOR
Time Sync Alarm
TIME= 18:24:44 DATE= 2000-05-05 STATUS CHANGE
ALARM RELAY= OFF
ACTIVE ALARMS: NONE
In the example above, the antenna cable was damaged at 13:51:29 on May 5, 2000. Note that a
Minor Alarm was asserted at that time due to an "Antenna Problem". Since no GPS signal could
be received, the Sync Time-out counter expired, causing a Major Alarm due to loss of time sync.
The cable was repaired at 18:23:39, clearing the Minor and Antenna Problem messages. The
receiver then reacquired and qualified at least one satellite for one minute, which cleared all
alarms at 18:24:44.
Model 9183 Instruction Manual
Page 3-51
3.10.2 Display Dial-Out Log (Applicable only to units with Option 3 –
Modem)
If the NetClock has the optional Dial-Out Modem Interface (Option 3), display the log by doing
the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http://10.10.200.1 (or your IP address).
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Dial out Log" item. The Dial out History Log is then displayed
in the center of the screen. Each time an operation in the dial out process occurs, a dial out log
entry is created. A dial out log includes the UTC time and date of the log, the operation that was
just completed or the status from the previous operation. The log can be navigated by using the
scroll bar control on the right hand side.
Example response:
TIME= 18:00:51 DATE= 2005-07-07
Modem dial out to 9 1-303-494-4774.
TIME= 18:02:04 DATE= 2005-07-07
Dial out successful.
TIME= 18:02:06 DATE= 2005-07-07
Time Sync Success: Subsecond counter adjusted by -1.3209 ms.
TIME= 18:02:07 DATE= 2005-07-07
Time Sync Success: Sys Clock adjusted by 0 sec.
TIME= 18:02:07 DATE= 2005-07-07
No leap second detected this month
In the example above, the unit initiated a dial out at 18:00:51 to the number (9)1-303-494-4774.
At 18:02:04 it successfully finished the call and disconnected the modem from the phone line. It
then processed the collected time messages and adjusted the unit’s PPS back by 1.3209ms. It
then adjusted the system clock by 0 seconds at 18:02:07. In that same second it verified that
there was no leap second for that month
During the dial out operation, errors and timeouts can occur. These are also logged in the Dialout log. The exception log entries (in alphabetical order) are as follows:
Calibration initiated:
Calibration routine has started.
Calibration call success (#/#) calls made: Gives # of calls that have been successful and # of
calls that are scheduled.
Page 3-52
Model 9183 Instruction Manual
Calibration call failed: failure # of #: Gives # of calls that have failed in a row and # before
calibration will fail.
Calibration failed:
Calibration has ended without setting the latency value.
Calibration Success - Latency set to # ns: Calibration was successful. The latency was set.
Counter resolution means this number will always end with 00.
Call failed: [reason]:
Possible reasons are:
State Change – Modem no longer needs to synchronize system
(example: GPS signal came
back)
Busy Signal – Time source was busy.
Modem Error – Unspecified modem error
No carrier – No modem picked up on other end, phone # may be wrong
No dialtone – Could not get a dialtone
Netshow Request – “net show” was typed on the console port
Port Change – Switched to console mode
No Sync Message – Could not synchronize with the remote modem
Dial out successful:
Messages were successfully collected from time source.
Failed to sync during call:
This log entry records a dial out attempt that was successful in communicating with the modem
time reference, but was unable to sync the time messages during the call.
Leap Second check failed [reason]:
Only reason is BAD MESSAGE, which means that the leap second bit was not consistent across
all messages. This can happen if the month rolls over during a call or if some of the message
characters are lost.
Leap second detected: Leap second will be [ADDED/DELETED] at the end of the month
Leap second is to occur this month.
Modem Response Failure:
Failed to get a response from the modem at initialization.
Modem Call Failure:
Failed all call retries.
Modem dial out to #:
Gives the phone number which was dialed.
Model 9183 Instruction Manual
Page 3-53
No leap second detected this month:
Whenever a successful call is made and there is no leap second.
Test Call Failure:
The test call failed at some point. The reason for failure should be evident from the other
messages.
Test Call Success:
The most recent test call successfully got messages from the dialed number.
Timeout occurs, operation is aborted:
During time message acquisition and 1PPS sync process, if the process takes too long, it will be
automatically aborted and retried if possible. For example, if a time message acquisition receives
no response from the modem for two minutes, the operation is aborted. If there are retries
remaining, the dial out process is restarted.
Time Sync Failure: [reason]:
The modem failed to set the time. Gives the reason why the time could not be set. Possible
reasons are:
Port Switched – The port was set to console mode.
Alternate Sync – The unit got sync from another source first.
Timeout – The unit timed out while trying to reset time.
Unknown Error – ?
Time Sync Failure: Sys Clock not adjusted [reason]:
The sys clock could not be adjusted. Gives the reason why the clock could not be adjusted.
Possible reasons are:
Bad Timing - The unit could not verify the timestamps. This is a rare condition and does not
indicate any hardware error unless it happens frequently.
PPS error - The unit could not get a good PPS signal from itself.
Time Sync Success: Subsecond counter adjusted by # ms:
Time was successfully adjusted.
Time Sync Success: Sys Clock adjusted by # sec:
System clock (date and time) was adjusted.
Time verification success: Time within normal parameters:
While in holdover, time was verified and is still within 0.5 seconds. This implies that a leap
second was not missed.
Time verification: Time too far off. Exiting Sync:
Time is off by more than 0.5 seconds. A leap second was missed or something is very wrong.
Page 3-54
Model 9183 Instruction Manual
3.10.3 Display Event Relay Log
To Display the Event Relay log do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address)
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Event Relay Log" item. The Event Relay Log is then
displayed in the center of the screen. The event relay log will list a history of event relay actions.
Entries are made to this log when the following events occur:
An Event Timer Relay is triggered to OPEN the relays.
An Event Timer Relay is triggered to CLOSE the relays.
Sample Response:
TIME= 13:09:09 DATE= 2003-07-30
EVENT RELAYS: OPEN
EVENT #: 3
TIME= 13:12:25 DATE= 2003-07-30
EVENT RELAYS: CLOSE
EVENT #: 7
The Event Relay log is output in a continuous format, and can be navigated
by using the scroll bar control on the right hand side.
3.10.4 GPS Qualification Log
The GPS Qualification Log records the number of qualified satellites tracked each second. At
the end of every hour a log entry is created and the counters start again. The GPS qualification
log is useful in verifying receiver and antenna performance.
The GPS qualification log is outputted in the following format:
TIME= HH:MM:SS DATE= YYYY-MM-DD
N = XXXX
N = XXXX …
Q = QQQQ
Where:
HH:MM:SS= UTC time log was created
YYYY-MM-DD= Date log was created
N= The quantity of satellites
XXXX= Number of seconds the receiver tracked the listed quantity of satellites since the
beginning of the hour, 1…3600.
QQQQ= Number of seconds since the beginning of the hour the GPS signal was qualified,
0…3600
Typically, the receiver tracks two to three satellites when using a Model 8228 Window Mount
Model 9183 Instruction Manual
Page 3-55
GPS antenna. When using the Model 8225 Outdoor antenna, the receiver will typically track five
or more satellites.
There may occasionally be short periods when the receiver is unable to track any satellites. When
this occurs, the Time Sync alarm count down timer is started. The Sync Alarm Timer resets
whenever the receiver reacquires and qualifies at least one satellite for one minute. If a receiver
is unable to receive and qualify any satellites within the sync alarm period (two hours), a Time
Sync Alarm is asserted.
Satellites are qualified as valid when the received vehicle ID number is greater than 1 and the
satellite is available for Position Fix usage. The qualification count “Q” is incremented for each
second these conditions are met. Typically, the Q value for each hour should exceed 3000.
To view the GPS Qualification Log, do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address).
Press the "Enter Main Page" button.
On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "GPS Qualification Log" item. The GPS Qualification Log is
then displayed in the center of the screen.
Create a Report from the GPS Qualification Log
Since the GPS qualification log includes lots of information, we also provide a comma-separated
value (.CSV) file to use with Microsoft Excel™ or a similar program to convert the text data to a
graph.
To get a “column” graph in Microsoft Excel, do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address).
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Create report from GPS Qualification Log" item. A status
message will inform you, whether or not the qualification report is created successfully. If the
file is created successfully, FTP to the unit. Go the sys/logs directory and get the file named
“GPSLog.csv”. Please remember to get the file using ASCII data transfer option. Open
Microsoft Excel, select File/Open and then open the file saved on you local drive. A
spreadsheet should open with all the GPS log information.
To create a chart, Select “Insert/chart…” on the top menu in Excel.
A “Chart Wizard” window will pop-up, select “column” and then click “next”. Click the data
range box and then select all the data you want to chart, select “columns”, then click “Next”
button. Define a chart title and category for the X and Y axes. If you do not want to define
them, click the “Finish” button. A chart is then created based on the GPS qualification log data
you selected.
Page 3-56
Model 9183 Instruction Manual
3.10.5 Display Operational Log
To Display the Operational log do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address).
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Operational Log" item.
The Operational History Log is then displayed in the center of the screen. The operational log
response begins with a header containing all firmware version levels and the time and date since
power up. Entries are made to this log when the following events occur:
Unit Started:
The unit started log contains a UTC time and date stamp.
This log is created when power is restored to the clock.
For example:
Spectracom Corp. Model 9189
Software Version 2.3.0 Date: 07/07/2005
Unit Started 19:13:06 2003-07-29
Serial Port 1 Version 2.03
Remote Port 1 Version 2.03:
GPS Receiver = 12 Channel M12+ Version #:
This statement is printed after each power cycle to give the version of the GPS receiver.
First Satellite Acquired:
This log time stamps when the receiver acquires a satellite for the first time.
For example:
First Satellite Acquired 19:21:34 2003-07-29
GPS Signal Qualified:
This log entry records when the receiver acquires or re-acquires and qualifies at least four
satellites for one minute. A satellite is considered qualified if the received vehicle ID number is
at least 4 and if all four satellites can be used for Position Fix. The time and date contained in the
log reflect UTC time. If the unit is operating in the single satellite mode (not recommended), the
minimum number of satellites for qualification drops to only 1 satellite required for one minute.
For example:
GPS Signal Qualified 19:32:00 2003-07-29
Clock adjusted by # seconds:
A log entry is made in this log for any system time adjustment larger than 1 second.
Model 9183 Instruction Manual
Page 3-57
Clock time source changed to [source]:
A log entry is made every time the clock’s reference is changed. For example, the unit is
synchronized to GPS but someone tries to manually set the time. The log will indicate that the
input was “user”.
Clock entering sync:
This entry will be made when the unit acquires time sync
Leap second inserted at end of month:
The reference input had detected that a leap second was to occur at the end of the month and the
NetClock added the necessary correction to account for the leap second.
Leap second removed at end of month:
The reference input had detected that a leap second was to occur at the end of the month and the
NetClock removed the necessary correction to account for the leap second.
GPS SOFTWARE RESET:
This log entry indicates the GPS receiver stopped responding so the unit has performed a
software reset of the GPS receiver daughter-board to try to restart the receiver.
GPS HARDWARE RESET:
This log entry indicates the GPS receiver stopped responding so the unit has performed a
hardware reset of the GPS receiver daughter-board to try to restart the receiver.
The Operational log is output in a continuous format, and can be navigated by using the scroll
bar control on the right hand side.
Page 3-58
Model 9183 Instruction Manual
3.10.6 Display Oscillator Log
Note: The oscillator log is not available for rubidium-based (Option 4) units.
To Display the Oscillator log do the following:
Use a PC with a web browser and connect to the product by typing the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address)
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "Oscillator Log" item. The Oscillator Log is then displayed in
the center of the screen. The Oscillator log will list a history of oscillator disciplining events.
Entries are made to this log when the following events occur:
Power on reset:
Time stamps the event of the unit recovering from a power cycle.
Coarse Adjust Mode:
Marks the beginning of the Coarse Adjustment of the oscillator. The coarse adjust samples and
adjust the D/A setting to stabilize the oscillator to the desired frequency. Once the setting is close
enough, the unit switches to Fine Adjust Mode.
Fine Adjust Mode:
Marks the beginning of the Fine Adjustment of the oscillator. This process begins once the
Coarse adjust places the oscillator close to the desired frequency. The Fine Adjust mode will
further tune the oscillator. The difference between coarse and fine adjust mode is that fine
adjustment is done over a larger amount of samples and adjusts the D/A slower than the Coarse
adjust.
Reference 1PPS Unstable:
Time stamps the event when the 1PPS becomes unstable. When this happens, no disciplining or
logging of oscillator data will be performed until this situation is corrected.
Periodic Frequency measurement:
This is the most common entry in the oscillator log. This entry displays the timestamp followed
by the current D/A settings. It also displays the current frequency error and the measured
frequency count.
The Frequency error is calculated as:
Freq Error = (Measured Freq Count – Ideal Freq Count) / (Ideal Freq Count)
Automatic D/A adjustment:
Usually, small D/A adjustments are made to keep the oscillator disciplined to GPS. These small
adjustments are only sampled periodically and shown as part of the periodic frequency
measurement described above. If a large adjustment is made to the D/A it is logged immediately
to inform the user.
Model 9183 Instruction Manual
Page 3-59
Example response:
TIME= 13:19:57 DATE= 2004-09-03 POWER ON RESET
TIME= 13:20:42 DATE= 2004-09-03 COARSE ADJUST MODE
TIME= 13:22:22 DATE= 2004-09-03 D/A= 7E46 FREQ ERROR= 1.22E-07 FREQ CNT=
1000000122
TIME= 13:22:48 DATE= 2004-09-03 FINE ADJUST MODE
TIME= 13:23:02 DATE= 2004-09-03 AUTOMATIC D/A ADJUSTMENT
D/A= 7E39 MATCH CNT= 47
TIME= 13:24:02 DATE= 2004-09-03 D/A= 7E38 FREQ ERROR= 4.00E-09 FREQ CNT=
1000000004
TIME= 13:25:42 DATE= 2004-09-03 D/A= 7E36 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:27:22 DATE= 2004-09-03 D/A= 7E37 FREQ ERROR= 1.00E-09 FREQ CNT=
1000000001
TIME= 13:29:02 DATE= 2004-09-03 D/A= 7E35 FREQ ERROR= 2.00E-09 FREQ CNT=
1000000002
TIME= 13:30:42 DATE= 2004-09-03 D/A= 7E35 FREQ ERROR= 2.00E-09 FREQ CNT=
1000000002
TIME= 13:30:51 DATE= 2004-09-03 AUTOMATIC D/A ADJUSTMENT
D/A= 7E33 MATCH CNT= 69
TIME= 13:32:22 DATE= 2004-09-03 D/A= 7E35 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:34:02 DATE= 2004-09-03 D/A= 7E32 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:35:42 DATE= 2004-09-03 D/A= 7E34 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:37:22 DATE= 2004-09-03 D/A= 7E35 FREQ ERROR= -1.00E-09 FREQ CNT=
999999999
Page 3-60
Model 9183 Instruction Manual
TIME= 13:39:02 DATE= 2004-09-03 D/A= 7E35 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:40:42 DATE= 2004-09-03 D/A= 7E36 FREQ ERROR= -1.00E-09 FREQ CNT=
999999999
TIME= 13:42:22 DATE= 2004-09-03 D/A= 7E38 FREQ ERROR= 0.00E+00 FREQ CNT=
1000000000
TIME= 13:44:02 DATE= 2004-09-03 D/A= 7E34 FREQ ERROR= 3.00E-09 FREQ CNT=
1000000003
TIME= 13:45:42 DATE= 2004-09-03 D/A= 7E33 FREQ ERROR= 2.00E-09 FREQ CNT=
1000000002
TIME= 13:46:15 DATE= 2004-09-03 REFERENCE 1PPS UNSTABLE
TIME= 13:52:00 DATE= 2004-09-03 COARSE ADJUST MODE
TIME= 13:52:12 DATE= 2004-09-03 FINE ADJUST MODE
TIME= 13:52:15 DATE= 2004-09-03 AUTOMATIC D/A ADJUSTMENT D/A= 7E3B
MATCH CNT= 107
The example shows a unit that recovered from a power cycle. It immediately began coarse mode
adjustment, followed by Fine adjustment. Periodic frequency measurements and large D/A
adjustments are then logged. After sometime, this unit loses a stable 1PPS reference. When the
1PPS reference is recovered, the unit began disciplining the oscillator again from coarse mode.
Model 9183 Instruction Manual
Page 3-61
3.11
NTP/SNTP
NTP (Network Time Protocol) and SNTP (Simple Network Time Protocol) are client-server
protocols for synchronizing the time on IP networks. NTP provides greater accuracy and error
checking than SNTP. NTP and SNTP can be used to synchronize the time on any computer
equipment that is compatible with the Network Time Protocol. This includes CISCO routers and
switches, UNIX machines and Windows machines with a suitable client. To synchronize just one
workstation, several freeware or shareware NTP clients are available on the Internet. The
software running on the PC determines if NTP or SNTP is used.
3.11.1 Configure NTP
The NTP setup page provides full control of the operation of your NTP server. Follow the simple
steps below to quickly set up your unit as an NTP server on your network.
Connect to your unit through its web browser user interface.
Click on the System Setup link on the bottom of the screen to open the menu for system
configuration.
Figure 3-20: NTP Screen
Page 3-62
Model 9183 Instruction Manual
Click on the NTP link on the left side of the screen to enter the NTP setup page. Note: you must
be logged in as an administrator to modify the NTP settings.
The NTP server can operate in Unicast mode, multicast mode, or both concurrently.
To enable Unicast operation, place a checkmark in the box labeled “NTP Unicast”.
To enable multicast operation, place a checkmark in the box labeled “NTP Broadcast …”.
To enable both modes, be sure that both boxes have a checkmark.
In Unicast mode, the NTP server will “listen” for NTP request messages from NTP clients on
the network. When an NTP request packet is received, the NTP server will send an NTP
response time packet to the requesting client. Under typical conditions, the Spectracom NTP
server can service up to 390 NTP requests per second, without MD5 encryption enabled (read
below).
In multicast mode, the NTP server will send out unsolicited NTP time packets to the local
broadcast address at a user-specified rate. Enter the desired frequency in seconds into the
Broadcast field on the setup page.
Note: Unicast Mode is the predominant mode of operation when synchronizing a network.
Multicast is reserved for specialized software requirements and is not commonly used.
By default, the NTP server supports authenticated NTP packets via an MD5 authenticator. This
feature does not encrypt the time packets, but attaches an authenticator, which consists of a key
identifier and an MD5 message digest, to the end of each packet. This can be used to guarantee
that NTP packets came from a valid NTP client or server, and that they were not tampered with
during transmission.
To use the MD5 authentication in Unicast mode, both the NTP client and the Spectracom NTP
server must contain the same key ID / key string pair and the client must be set to use one of
these MD5 pairs. The key ID must be a number between 1 and 4,294,967,295; the key string
may contain any alphanumeric characters and can be from 1 to 16 characters long. Duplicate key
IDs are not permitted.
When operating in Unicast mode, the Spectracom NTP server supports a secure mode, which can
be enabled by placing a checkmark in the box labeled “Secure Mode”. With this box checked,
any NTP requests received by the NTP server, which do not contain a valid “Key ID / Key
String” pair will be ignored and no NTP response packet will be sent.
The following table shows how the Spectracom NTP server will respond to various unicast
requests with and without secure mode enabled.
Type of NTP Request Packet
No MD5 authenticator
Invalid MD5 authenticator
Valid MD5 authenticator
Model 9183 Instruction Manual
Without “Secure Mode” checked
Response with no MD5
authenticator
Response with valid authenticator
(using key 0)
Response with valid authenticator
(using same key as the request)
With “Secure Mode” checked
No response
No response
Response with valid authenticator
(using same key as the request)
Page 3-63
When operating in multicast mode, the Spectracom NTP server can be configured to append
MD5 authenticators to each packet. To enable this, check the box labeled “Use MD5
authentication with key …” under the NTP Broadcast setting, and enter the key ID to be used.
The Session statistics checkbox will enable or disable logging of NTP usage statistics. This is
displayed as part of the status and log page. Refer to the status and log section for details.
At any time during the setup, press “Submit” to save the settings or “Reset” to restore the
settings to their previous state.
3.11.2 NTP Support
Spectracom cannot provide technical assistance for configuring and installing NTP on Unixbased applications. Please refer to http://www.ntp.org/ for NTP information and FAQs. Another
good source for support is the Internet newsgroup at news://comp.protocols.time.ntp/.
Spectracom can provide support for the Windows NT and Windows 2000 time synchronization.
Refer to the Spectracom Web page for application notes at:
http://www.spectracomcorp.com/computernetworks.html.
3.11.3 Application Note: MD5 Authentication using a Cisco Router
According to the Cisco Manual located on their website, to configure NTP Authentication, the
user would use the following commands:
set ntp key public_keynum {trusted | untrusted} [md5 secret_keystring]
where:
public_keynum is a number from 1 to 4,292,945,295 and is a key ID number
“trusted" is used to activate the key, "untrusted" to disable the key
md5 means the keyword (the type of key, Cisco only uses md5)
"secret_keystring" is the key value, it is from 1 to 32 printable characters.
To interoperate with the NetClock, the "secret_keystring" must be eight printable characters and
the public_keynum must be a number from 1 to 6.
For example: to define key id number 3 with the secret_keystring TICKTOCK" would require
the following commands into the Cisco Router:
set ntp key 3 trusted md5 TICKTOCK
This will define the key and enable it in one step. The command "show ntp" can be used to
display the key definitions.
On the NetClock side you would enable MD5 authentication with key 3 and then enter
TICKTOCK into the Key Table with ID 3.
Page 3-64
Model 9183 Instruction Manual
3.12
NTP Statistics
The NTP statistics is controlled from the NTP configuration described in the NTP section of this
manual. To display the NTP Statistics do the following:
Use a PC with a web browser and connect to the product by typing in the IP address into the
address window of the browser as follows: http:// 10.10.200.1 (or your IP address)
Press the "Enter Main Page" button. On the lower menu line, select the "Status & Log" item.
On the left side menu, select the "NTP Statistics" item. The NTP Statistics is then displayed in
the center of the screen as shown:
Figure 3-21: NTP Statistics
Model 9183 Instruction Manual
Page 3-65
The overall statistics provides a quick overview of all the NTP activities from the unit while the
client statistics displays the details of each client’s interaction with the unit. Invalid requests are
colored in red to improve the readability of the statistic list. If you need to find a specific client,
you can use the find (Ctrl + F) function of the browser and search for the client’s I.P. address.
The statistics log can retain the entries for up to 200 clients. Once the maximum of 200 clients
has been reached, sequential clients over 200 will start to overwrite the oldest entries in the log
(this may or may not be in the order listed in the log).
The following are descriptions of the fields contained in the NTP Statistics chart.
Total Clients: The total number of clients that the NetClock has received NTP packets from, up
to a maximum of 200.
Requests: Number of NTP packets received by the NetClock from a client or clients.
Processed Requests: Number of NTP packets received that were processed by the NetClock.
The NetClock will only process received NTP packets while NTP is enabled AND NTP Unicast
is enabled. These settings can be enabled from the NTP configuration page.
Authenticated Requests: Number of NTP packets received by the NetClock that were
processed, included authenticator fields, and authenticated successfully.
Invalid Requests: Number of NTP packets received by the NetClock that were processed and
either (1) included authenticator fields but authenticated unsuccessfully, or (2) did not include
authenticator fields and Secure Mode was enabled. Secure mode can be enabled or disabled
from the NTP configuration page.
Dropped Requests: Number of NTP packets received by the NetClock that were either (1) not
processed because NTP was not enabled and/or NTP Unicast was not enabled, (2) ignored
because the packet length did not match the valid length for an NTP packet, (3) ignored because
the NTP request specified a mode that the NetClock does not support, or (4) ignored because the
NTP request specified a version that the NetClock does not support. NetClock supports requests
using CLIENT mode or SYMMETRIC ACTIVE mode. NetClock supports requests using
versions 1, 2, 3, or 4.
Request Responses: Number of NTP request packets received by the NetClock that were
successfully responded to. A successful response is logged when the NetClock transmits an NTP
response packet to the client without noting any errors.
Response Errors: Number of NTP request packets received by the NetClock that were
unsuccessfully responded to. An unsuccessful response is logged when the network protocol
stack is unable to successfully transmit the response packet to the client.
Time of Last Request: The time at which the last NTP packet was received from a particular
client.
Page 3-66
Model 9183 Instruction Manual
Last Request Invalid?: Identifies whether or not the last NTP request received from a particular
client was an invalid request.
Note: To clear the NTP Statistics log, login to the administrator mode and press the “reset” radio
button.
Model 9183 Instruction Manual
Page 3-67
3.13
Relays
3.13.1 Configuring the relays
The operational status can be monitored remotely using the TIMER/ALARM RELAYS
connector on the rear panel. This connector provides the common, NO and NC contacts for three
relays. These relays can be connected to an alarm lamp, horn, or other indicator to warn when
the clock accuracy or operation has been affected, or to signal the triggering of a programmed
event. The relay contacts are rated at 2.0 amps, 30VDC.
The web browser user interface allows the assignment to each relay of one of three functions:
Major Alarm, Minor Alarm, and Event Timer. For more details on these functions, see the
"Alarm Outputs" section and the "Configuring the Event Timer" section.
To configure or view the relay assignments:
Connect to the web browser user interface. If configuring, login to configuration mode (or
administration mode). If just viewing, no login is needed. Along the bottom of the interface
select Relay Setup. Along the left hand side, select Relay Output. A page showing the relays
along the left side and the functions along the top will appear. To assign a function to a relay,
click the dot that lines up with both the function and the relay. If just viewing, no assignments
can be changed. See the below example.
Figure 3-22: Relay Output Screen
To test the operation of the relays:
Page 3-68
Model 9183 Instruction Manual
The relay operation of all three relays can be tested at any time as desired. To test the relay
operation, login as administrator mode and click on “test relays” in the left orange bar. Chose
the desired relay to be tested and then press submit. The selected relay should activate each time
the submit button is pushed.
Example: To assign “Major Alarm” to relay 1, “Minor Alarm” to relay 2, and “Event Timer” to
relay 3, click on the following dots.
Major alarm to relay 1: the dot in row 1, column 1.
Minor alarm to relay 2: the dot in row 2, column 2.
Event Timer to relay 3: the dot in row 3, column 3.
A single relay can only be assigned one function but a function can be assigned to multiple
relays.
By default, all three relays are assigned “Major Alarm.”
Model 9183 Instruction Manual
Page 3-69
3.14
Security
3.14.1 Security Overview
In addition to providing login accounts with up to 16-character passwords supporting different
privileges for the config and admin users, Spectracom products providing security features use
OpenSSH and OpenSSL. OpenSSH is the Open Source version of the Secure Shell; which
provides a set of server side tools allowing secure remote telnet like access and secure file
transfer using remote copy like (RCP) and FTP like utilities. OpenSSL is the Open Source
version of Secure Sockets Library; which is used to provide the encryption libraries. Together
OpenSSH and OpenSSL provide industrial strength encryption allowing for secure remote
administration via command line, HTTPS web pages and secure file transfers.
A convenient and simple web browser user interface is provided under the “System Setup” tab’s
“Network” and “Security” sub menus. Users can configure their product and control the network
access to the product by selecting options found under these menus. The Network sub menu
allows the user to choose to enable or disable protocols such as Telnet and FTP. The user can
also as described in the Network menu section control their subnet and gateway. On the Model
9183, the user is permitted to enable or disable HTTP and SSH as well. The secure product can
be configured to allow access only via NTP and the secure protocols such as HTTPS or SSH or
to operate in a less secure mode. Spectracom secure products also provide a Security submenu.
The security submenu provides the user with the means to configure their use of SSH and SSL.
Pop up help text is available for most Security web browser user interface features. Allow your
cursor to hover over the box and help text box should appear.
3.14.2 Configuring SSH
3.14.2.1 Overview
OpenSSH implements a free version of Secure Shell. Secure Shell is a set of server and client
tools supporting secure telnet like remote access and secure, authenticated file transfers using
passwords and/or public key cryptography. The tools supported are SSH – secure shell, SCP –
secure copy, and SFTP – secure file transfer protocol. The Master Clock implement the server
components of SSH, SCP and SFTP.
For more information on OpenSSH please see www.openSSH.org.
3.14.2.2 Managing Host Keys
Overview
SSH uses Host Keys to uniquely identify each SSH server. Host Keys are used for server
authentication and identification. The secure Spectracom product allows the user to create or
delete RSA1 keys for the SSH1 protocol or RSA or DSA keys for the SSH2 protocol.
Deleting Host Keys
Page 3-70
Model 9183 Instruction Manual
The user may choose to delete individual Host Keys. To delete a key simply select a radio
button for the key you wish to delete and press submit at the bottom of the page.
Figure 3-23: SSH configuration Screen
If the user chooses to delete the RSA1 key, the SSH1 protocol is not available and SSH1 clients
will be unable to connect.
If the user chooses to delete the RSA or DSA key only the SSH2 protocol will function but that
form of server authentication will not be available. If the user chooses to delete both the RSA
and DSA keys the SSH2 protocol is not available and SSH2 clients will be unable to connect.
If the users chooses to simultaneously delete the RSA1, RSA and the DSA keys, SSH will not
function. In addition, if SSH Host Keys are being generated at the time of deletion, the key
Model 9183 Instruction Manual
Page 3-71
generation processes are stopped, any keys created will be deleted, and all key bit sizes are set to
0.
The user may choose to delete existing keys and request the creation of new keys, however it is
often simpler to make these requests separately.
3.14.2.3 Creating Host Keys
The user may create individual RSA1, RSA and DSA Host Public/Private Key pairs. Host Keys
must first be deleted before new Host Keys can be created. To create a new set of host keys first
delete the old keys, then select the create host keys checkbox and enter the key sizes you desire.
Then select the submit button at the bottom of the screen.
A typical Host Key generation request is shown below.
Figure 3-24: Creating SSH host key files
Spectracom secure products typically have their initial Host Keys created at the factory. The
default key size for all key types is 1024. Host Key sizes can vary between 768 and 4096 bits.
The recommended key size is 1024. Though many key sizes are supported, it is recommended
Page 3-72
Model 9183 Instruction Manual
that users select key sizes that are powers of 2 or divisible by 2. The most popular sizes are 768,
1024, and 2048. Large key sizes up to 4096 are supported, but are discouraged because they take
hours to generate.
Host Keys are generated in the background. Creating an RSA1, RSA and DSA keys each with
1024 bits length, typically takes about 10 minutes. Keys are created in the order of RSA, DSA
and finally RSA1. When the keys are created you can successfully make SSH client
connections. If the unit is rebooted with Host Key creation in progress or the unit is booted and
no host keys exist the key generation process is restarted. The key generation process uses either
the previously specified key sizes or if a key size is undefined it defaults to 1024. A key with a
zero length or blank key size field is not created.
Note also that when you delete a Host Key and recreate a new one, SSH client sessions will warn
you that the host key has changed for this particular IP address. The user will either have to
override the warning and accept the new Public Host Key and start a new connection or they
may need to remove the old Host Public Key from their client system and accept the new Host
Public Key. Please consult your specific SSH client’s software’s documentation.
3.14.2.4 Selecting SSH Authentication Mode
The SSH client utilities SSH, SCP and SFTP allow for several modes of user authentication.
SSH allows the user to remotely login or transfer files by identifying the user’s account and the
target machines IP address. Users can be authenticated by either using their account passwords
or by using a Public Private Key Pair. Users keep their private key secret within their
workstations or network user accounts and provide the Spectracom secure product a copy of their
public key.
To select an Authentication mode admin users select an option from the Authentication section
and select submit at the bottom of the page.
Model 9183 Instruction Manual
Page 3-73
Figure 3-25: Selecting SSH authentication modes
The modes of authentication supported include:
Either Public Key with Passphrase or Login Account Password
Login Account Password only
Public Key with Passphrase only
The first option allows users to login using either method. This is the default. Whichever mode
works is allowed for logging in. If the Public Key is not correct or the Passphrase is not valid the
user is then prompted for the login account password. The second option simply skips
public/private key authentication and immediately prompts the user for password over a secure
encrypted session avoiding sending passwords in the clear. Finally the last option requires the
user to load a public key into the Spectracom secure product. This public key must match the
private key found in the users account and be accessible to the SSH, SCP or SFTP client
Page 3-74
Model 9183 Instruction Manual
program. The user must then enter the Passphrase after authentication of the keys to provide the
second factor for 2-factor authentication.
3.14.2.5 Managing Public Keys used for SSH Authentication
SSH using public/private key authentication is the most secure method of authenticating users
for SSH, SCP or SFTP sessions.
The web browser user interface provides the means for the user to delete the
/sys/.SSH/authorized_keys file, to add individual Public Keys and comments to the existing file,
and to copy a file containing Public Keys from the /sys/update folder to a file named
/sys/.SSH/authorized_keys. Using FTP, SCP or SFTP the user may also retrieve the read-only
authorized_keys file from the /sys/.SSH directory.
An example of a user adding a public key to the authorized_keys file is shown below.
Figure 3-26: Adding SSH public key to authorized keys
Model 9183 Instruction Manual
Page 3-75
Users are required to create private and public key pairs on their workstation or within a private
area in their network account. These keys may be RSA1, RSA or DSA and may be any key bit
length as supported by the SSH client tool. These public keys are stored in a file in the /sys/.SSH
directory named authorized_keys. The file permissions are to be read-write for root and readonly for all other users. The file is to be formatted such that the key is followed by the optional
comment with only one key per line. The Spectracom application terminates each line with a
carriage return and separates each line with a blank line. The file format, line terminations and
other EOL or EOF characters should correspond to UNIX conventions, not Windows.
If a user deletes all Public Keys Public/Private Key Authentication is disabled. If the user has
selected SSH authentication using the “Public Key with Passphrase” option login and file
transfers will be forbidden. The user must select a method allowing the use of account password
authentication to enable login or file transfers using SCP or SFTP.
If a user wants to completely control the public keys used for authentication a correctly
formatted authorized_keys file formatted as indicated in the OpenSSH web site can be loaded
onto a secure Spectracom product. The user transfers a new public key file using an insecure
FTP client or a secure SCP or SFTP client using only account password authentication. The user
should place the new public key’s file in the /sys/update directory. The user then selects the
delete all public key’s checkbox, selects the update public key’s checkbox and enters the
filename in the space provided.
An example of a user adding a new public key file is shown below.
Page 3-76
Model 9183 Instruction Manual
Figure 3-27: Adding a new SSH public key file
The MyPublicKeys.txt file in the /sys/update directory is renamed and placed in the /sys/.SSH
directory under the new name authorized_keys after the user selects the submit button at the
bottom of the screen. Users can now authenticate using Private Keys, which match these public
keys if the authentication mode supports “Public Key with Passphrase” authentication.
3.14.2.6 Secure Shell Sessions
Secure shell sessions using an SSH client can be performed using the admin or config accounts.
The user may use Account Password or Public Key with Passphrase authentication. Please be
patient it can take a few minutes to establish a secure SSH session. The OpenSSH tool SSHKEYGEN is used to create RSA1, RSA and DSA keys used to identify and authenticate user
login or file transfers.
Model 9183 Instruction Manual
Page 3-77
The following command lines for OpenSSH SSH client tool are given as examples of how to
create a secure SSH session.
Creating an SSH session with Password Authentication for the admin account.
ssh [email protected]
[email protected]'s password: admin123
The user is now presented with Boot up text and/or a “>” prompt which allows the use of the
Spectracom command line interface.
Creating an SSH session with Password Authentication for the admin account.
ssh [email protected]
[email protected]'s password: config12
The user is now presented with Boot up text and/or a “>” prompt which allows the use of the
Spectracom command line interface.
Creating an SSH session using Public Key with Passphrase Authentication for the admin or
config account.
The user must first provide the secure Spectracom product a RSA public key found typically in
the OpenSSH id_rsa.pub file. The user may then attempt to create an SSH session.
ssh -i ./id_rsa [email protected]
Enter passphrase for key './id_rsa': mysecretpassphrase
Please consult the SSH client tool’s documentation for specifics on how to use the tool, select
SSH protocols, and provide user private keys.
3.14.2.7 Secure File Transfer
Master Clocks provide secure file transfer using the SSH client tools SCP and SFTP.
Authentication is performed using either Account Passwords or Public Key with Passphrase.
However unlike SSH where the config or admin accounts are used, a special user account is
provided named “SCP” for these tools. The “SCP” user account has the same password as the
admin account. It differs from the admin and config accounts in that it does not run the
Spectracom product shell. It is a limited account that only allows the user to transfer files to and
from the /sys/update folder and to retrieve files from folders which the SCP account has read
permission.
Some sample OpenSSH, SCP and SFTP client commands are shown below.
1) Perform an SCP file transfer to the device using Account Password authentication
scp publickeys [email protected]:/sys/update
[email protected]'s password: admin123 (Always use same password as admin)
Page 3-78
Model 9183 Instruction Manual
publickeys
00:00
100% |***************************************************|
5
2) Perform an SCP file transfer from the device using Public Key with Passphrase authentication.
scp -i ./id_rsa publickeys [email protected]:/sys/update
Enter passphrase for key './id_rsa': mysecretpassphrase
publickeys
00:00
100% |***************************************************|
5
3) Perform an SFTP file transfer to the device using Account Password authentication.
sftp -i ./id_rsa [email protected]
[email protected]'s password: admin123 (Always use same password as admin)
sftp>
The user is presented with the SFTP prompt allowing interactive file transfer and directory
navigation.
4) Perform an SFTP file transfer from the device using Public Key with Passphrase
authentication
sftp -i ./id_rsa [email protected]
Enter passphrase for key './id_rsa': mysecretpassphrase
sftp>
The user is presented with the SFTP prompt allowing interactive file transfer and directory
navigation.
3.14.2.8 Recommended SSH Client Tools
Spectracom does not make specific recommendations as to which specific SSH client, SCP
client, or SFTP client tools. However, there are many SSH based tools available at cost or free
to the user.
Two good, free examples of SSH tool suites are the command line based OpenSSH running on a
Linux or OpenBSD x86 platform and the excellent (and free) putty SSH tool suite.
The OpenSSH tool suite in source code form is freely available at www.openSSH.org though
you must also provide an OpenSSL library, which can be found at www.openssl.org.
The putty SSH tools and instructions regarding their use can be found at:
Model 9183 Instruction Manual
Page 3-79
HTTP://www.chiark.greenend.org.uk/~sgtatham/putty/
Note that it is strongly recommended to exit all SSH client sessions preferably using the “exit”
command or “control-C” to avoid leaving the sshd daemon running. Exiting the putty tool (or
SSH clients tools) by selecting the windows “X” button can leave the SSHd session running and
result in refused connections until it times out after extremely long timeout delays. In such a
case a reboot might be preferable rather than waiting.
3.14.3 Configuring HTTPS
3.14.3.1 Overview
The OpenSSL library provides the encryption algorithms used for secure HTTP (HTTPS). The
OpenSSL package also provides tools and software, which is used to create x509 Certificate
Requests, Self Signed Certificates and Private/Public Keys. The Master Clock uses OpenSSL
library with a simple GUI interface to create certificate Requests and self-signed certificates.
Users can then send these certificate requests to an external Certificate Authority (CA) for the
creation of a third party verifiable certificate or use an internal corporate CA. If a Certificate
Authority is not available the user can simply use the self-signed certificate that comes with the
unit until it expires or create their own self-signed certificates to allow the use of HTTPS.
Each Spectracom secure product comes with a default Spectracom self-signed certificate, which
will outlast the product warranty. The typical expiration of the certificate is about 10 years.
HTTPS is available using this certificate until this certificate expires. If deleted however, this
certificate cannot be restored.
For more information on OpenSSL please see www.openssl.org.
3.14.3.2 Deleting Certificates, Private Keys, and Certificate Requests
The user is has the option of deleting the current certificate, certificate requests and private key.
To choose the delete option simply check the delete checkbox and press the submit button at the
bottom of the screen. Once the current certificate is deleted HTTPS is unavailable.
Page 3-80
Model 9183 Instruction Manual
Figure 3-28: Deleting SSL Certificate, Certificate Request and Private Key Files
3.14.4 Restoring Self Signed Certificates and Private Keys
The user has an option to restore the last self signed certificate and private key created by the
user. To restore these files the user needs to select the “Restore User’s Self Signed Certificate
and Private Key” checkbox. The user then selects the submit button at the bottom of the screen.
The default Spectracom self-signed certificate and private key cannot be restored when deleted.
Figure 3-29: Restoring user’s Self Signed Certificate and Private Key Files
Model 9183 Instruction Manual
Page 3-81
3.14.5 Creating Self Signed Certificates, a Private Key, and a Certificate
Request
The user can create a customer specific x509 self-signed certificate, an RSA private key and
x509 certificate request using the web browser user interface. RSA private keys are supported
because they are the most widely accepted. At this time DSA keys are not supported.
The user is required to select a signature algorithm, a private key passphrase of at least 4
characters, a private key bit length, the certificates expiration in days and at least one of the
remaining fields. It is recommended that the user consult their Certificate Authority for the
required fields in an x509 certificate request. Spectracom recommends all fields be filled out and
match the information given to your certificate authority. For example, use all abbreviations,
spellings, URLs, and company departments recognized by the Certificate Authority. This helps
in avoiding issues with the Certificate Authority having issues to reconciling certificate request
and company record information.
If using only self-signed certificates the user should choose the fields based upon the company’s
security policy.
A sample input screen to create a certificate request is shown below.
Figure 3-30: Creating a new Certificate Request and Self Signed Certificate
Note that it can take several minutes for the certificate request, the private key, and self-signed
certificate are created. The larger the key the longer amount of time is required. It is
recommended that a key bit length be a power of 2 or multiple of 2. The key bit length chosen is
typically 1024, but can range from 512 to 4096. Long key bit lengths of up to 4096 are not
Page 3-82
Model 9183 Instruction Manual
recommended because they can take hours to generate. The most common key bit length is the
value 1024.
The user is provided with several signature algorithm choices. The signature algorithm or
message digest is most commonly MD5. Other secure options include SHA1 and RMD160.
Consult your Web Browser documentation and Certificate Authority for key bit lengths and
signature algorithms supported.
If a system is rebooted during this time, the certificate will not be created. When the operation is
completed, the user will see a certificate request in the certificate request text box. A digital file
copy of the certificate request can be found in the /sys/update directory with the file name
cert.csr. This file can be retrieved using FTP, SCP or SFTP. The certificate request can also be
cut and paste from the certificate request text box on the web browser user interface.
3.14.6 Requesting Certificate Authority Certificates
Once the processing to create the certificate request, RSA private key and self-signed certificate
is completed the web browser user interface will display the certificate request.
A certificate request is shown below.
Figure 3-31: A new Certificate Request and Self Signed Certificate
Model 9183 Instruction Manual
Page 3-83
The user can submit this certificate request to the company’s Certificate Authority for a real
verifiable, authenticable third party certificate. Until this certificate is received the user’s selfsigned certificate displaying the information shown above can be used.
The Master Clock web server will load this new self-signed certificate and private key after the
user selects a few more web page options or when the user selects the “Exit connection to
product” button at the top of the screen. The user will see a pop up window in Windows
operating systems. The certificate and be installed or viewed using this pop up window. Other
operating systems may vary in how they install and accept certificates. External Internet access
may be required by your Certificate Authority to verify your third party certificate.
3.14.7 Installing Certificates
After your Certificate Authority issues you a Certificate you need to install it on the secure
Spectracom product. Certificates may be installed via the web browser user interface and stored.
Or they may be copied to the /sys/update directory using file transfer and installed using the web
browser user interface.
A sample certificate installation using the Certificate text box on the web browser user interface
is shown below.
Figure 3-32: Installing a new Certificate
Page 3-84
Model 9183 Instruction Manual
The user needs to cut and paste the certificate into the Update Certificate text box and select the
checkbox. The user then enters submit at the bottom of the page and the current self-signed
certificate is overwritten.
If the file transfer method is chosen FTP, SCP, SFTP may be used to copy the certificate text file
to the /sys/update/ directory using any file name. The user then selects the “Update Certificate
with file named” check box and enters the file name in the space. The user then enters submit at
the bottom of the page and the current self-signed certificate is overwritten with the specified file
name.
In both cases the secure Spectracom product’s web server loads this new self-signed certificate
and private key after the user selects a few more web page options or when the user selects the
“Exit connection to product” button at the top of the screen.
3.14.8 Using Externally generated Certificates
The user is provided with another means to load certificates onto the secure Spectracom product
supported. The certificate must be in PEM format.
The user may install the externally generated certificate using the web browser user interface. A
sample certificate install is shown below.
Model 9183 Instruction Manual
Page 3-85
Figure 3-33: Using External Certificate
The certificate can also be installed using file transfer and the web browser user interface. The
user simply needs to transfer the certificate file to the /sys/update directory using either SCP or
SFTP. Once the file is transferred, the user simply selects the “Update Certificate with file
named” checkbox and provides the file names. The user then enters the submit button.
In both cases the secure Spectracom product’s web server loads this new self-signed certificate
after the user selects a few more web page options or when the user selects the “Exit connection
to product” button at the top of the screen.
To successfully use this means of certificate generation the user must correctly create a
certificate which complies with the requirements of the currently used OpenSSL release.
3.14.9 What to do if you cannot get into a secure Spectracom Product
Spectracom assumes that the customer is responsible for the physical security of the product.
Spectracom secure products are required to be locked in a secure enclosure, cabinet or room.
Page 3-86
Model 9183 Instruction Manual
Unauthorized persons are not to be given access to the product nor should a serial cable and
terminal program be attached unless the system administrator is configuring or performing
maintenance.
If your company disables HTTPS, loses the system passwords, allows the certificate to expire,
deletes the certificate the certificate and private keys and deletes the Host Keys or forgets the
Passphrase access to the secure Spectracom product can become denied.
To restore access to your system you must utilize the setup port to restore the admin accounts
default password. The admin account can then be used to enable HTTP using the “net HTTP”
command. Contact Spectracom Technical Support for details on how to do this.
Model 9183 Instruction Manual
Page 3-87
3.15
Signature Control for the frequency output
The rear panel 10 MHz output has the capability to be disabled upon assertion of an alarm
condition. This feature is known as Signature Control. The Frequency Outputs web browser
user interface page allows the user to observe the current state of the 10MHz Frequency output
and configure the different Signature Control modes of operation. Refer to
Figure 3-34 for more details.
The ON or OFF state of the 10MHz output is displayed on the web browser user interface screen.
The Signature Control mode is selectable via a pull down menu. The user is provided with three
possible configurations. These choices are described below.
None – No Signature control mode of operation. The 10MHz output is always on. The output
will not be disabled if GPS reception is lost or a major alarm is present.
Major Alarm – The Signature control mode of operation disables the 10MHz output if a Major
Alarm is active. When the Major Alarm is cleared, the 10MHz output is re-enabled.
Time Sync – The Signature control mode of operation disables the 10MHz output if a loss of
Time Synchronization, which provides a stable 1PPS used for disciplining the
10MHz occurs. When loss of Time Sync has cleared, the 10MHz output is re-enabled.
Note: Oscillator disciplining is dependant upon a very stabile reference 1PPS input signal. Due
to this, the Modem dial-out option (Option 3) available for the Model 9183 cannot be used for
oscillator disciplining and hence does not result in enabling 10MHz frequency outputs when time
sync is achieved via these time sources. The NetClock must be synchronized to GPS with a 3-D
fix (minimum of four satellites) when the 10 MHz output is required to be disciplined for
accuracy. Without a 3-D fix present and with Signature Control set to NONE, the frequency
output will always be present but not disciplined for accuracy.
Because a window-mounted antenna will have difficulties maintaining at least four satellites
continuously, the window-mount antenna, Model 8228, should not be used when disciplining of
the 10 MHZ is desired. The antenna needs to be installed outdoors with a good view of the
horizon.
Page 3-88
Model 9183 Instruction Manual
Figure 3-34: Signature Control configuration page
Model 9183 Instruction Manual
Page 3-89
3.16
SNMP
SNMP (Simple Network Management Protocol) is a set of standards for managing network
devices, which includes a protocol, a database structure specification, and a set of data objects.
The communication protocol involves one or more network management stations monitoring one
or more network devices. SNMP enabled devices must have an SNMP agent application that is
capable of handling network management functions requested by a network manager. The agent
is also responsible for controlling the database of control variables defined in the product’s MIB
(Management Information Base).
3.16.1 SNMP Configuration
The SNMP setup page is used to configure the device’s SNMP agent. The following steps can
be used to quickly configure the device’s SNMP agent while explaining the configuration
options.
Login to the unit through its web browser user interface as administrator mode. Click on the
“System Setup” link on the bottom blue bar to open the menu for system configuration. Click on
the “SNMP” link on the left side of the screen to enter the SNMP setup page.
The SNMP configuration page consists of five main sections, followed by the submit button.
The five sections (in order) consist of: SNMPv1 configuration, SNMPv2c configuration, Trap
destination/version, trap selections and then SNMPv3. The descriptions of each of these sections
are contained in the following.
Figure 3-35: SNMPv1 Setup Screen
Page 3-90
Model 9183 Instruction Manual
The radio buttons at the top of the page labeled “Disabled” and “Enabled” are used to determine
if the SNMP agent is on or completely turned off.
The SNMP agent has a number of access schemes (SNMPv1, SNMPv2, SNMPv3) that can be
individually enabled or disabled, depending on your specific needs. The check-box in front of
each of the schemes is used to enable or disable that particular scheme. The schemes are
described below.
SNMPv1 – By enabling this access scheme, SNMP network managers may use SNMP version 1
protocols to manage the device. A user-defined “Read” and a “Read/Write” community name
used by SNMPv1 may be entered if desired.
Network access is used to restrict by “network IP address” who may query this SNMP agent.
This feature is also known as “host restriction”. If the user wishes to restrict SNMP access to
one management station, say 192.168.0.1 then the network access should be set to
“192.168.0.1/32”. If the user wishes to allow any management station on the 192.168.0.X with
subnet mask 255.255.255.0, then Network Access would be set to “192.168.0.0/24”.
Figure 3.16-2: SNMPv2 Setup Screen
SNMPv2c – By enabling this access scheme, SNMP network managers may use SNMP version
2 protocols to manage the device. A user-defined “Read” and a “Read/Write” community name
used by SNMPv2c may be entered if desired.
Network access is used to restrict by “network IP address” who may query this SNMP agent. If
the user wishes to restrict SNMP access to one management station, say 192.168.0.1 then the
network access should be set to “192.168.0.1/32”. If the user wishes to allow any management
station on the 192.168.0.X with subnet mask 255.255.255.0, then Network Access would be set
to “192.168.0.0/24”.
Model 9183 Instruction Manual
Page 3-91
Figure 3.16-3: SNMP Trap destination Setup Screen
Further down the page is the configuration of the SNMPv1 and SNMPv2c traps. The “trap”
community name is used for both v1 and v2c traps. The destination table should be used to
define which SNMP managers should be sent traps and which version they should receive (v1 or
v2c). Up to five different traps destinations and their versions may be entered in the table. This
feature is to support a “distributed SNMP Manager scenario”. For example, on a Wide Area
network, traps can be sent to different geographic locations to coordinate the different Time
zones and normal working hours of personnel.
Page 3-92
Model 9183 Instruction Manual
Figure 3.16-4:Trap selection Setup Screen
The “Individual Trap Enable/Disable” section allows the user to enable/disable any subset of the
unit’s available traps. This list contains all of the available traps that may be sent from the
NetClock. Unchecking the box in front of each trap will prevent that particular trap from being
sent.
Model 9183 Instruction Manual
Page 3-93
Figure 3.16-5: SNMPv3 Setup Screen
The last section is for SNMPv3 configuration. This section allows the user to enable/disable any
one of the three SNMPv3 security models. These models are described below:
SNMPv3 (noAuth) – By enabling this access scheme, SNMP network managers may use SNMP
version 3 protocol to manage the device. No form of PDU (Protocol Data Units) authentication
or DES encryption is used. You may specify your own user name for this level of access.
SNMPv3 (auth) – By enabling this access scheme, SNMP network managers may use SNMP
version 3 protocol to manage the device. This level of SNMPv3 has you select a form of PDU
authentication (MD5 or SHA) but does not use DES encryption. You may specify your own user
name and pass phrase for this level of access. The pass phrase is the secret key shared between
the SNMP agent and manager, used in the MD5 or SHA authentication algorithm. The Pass
phrase must be a minimum of 8 characters long.
SNMPv3 (authPriv) – By enabling this access scheme, SNMP network managers may use
SNMP version 3 protocol to manage the device. This level of SNMPv3 also has you select a
form of PDU authentication (MD5 or SHA) and performs DES encryption on all PDU’s. You
may specify your own user name and pass phrase for this level of access. The pass phrase is the
secret key shared between the SNMP agent and manager, used in the MD5 or SHA
authentication and DES encryption algorithms. The pass phrase must be a minimum of 8
characters long. NOTE: This access method is only available on products that have the security
option installed.
When SNMP is fully configured as desired, click the submit button.
Page 3-94
Model 9183 Instruction Manual
3.16.2 Spectracom MIB
Spectracom has been assigned the enterprise identifier 18837 by the IANA (Internet Assigned
Numbers Authority). Spectracom’s MIB for its time and frequency products resides under this
enterprise identifier @ 18837.3.1 which is illustrated below.
is o
1
o rg
3
dod
6
in t e r n e t
1
m gm t
2
m ib - 2
1
e x p e r im e n t a l
3
p r iv a t e
4
e n t e r p r is e s
1
s p e c tra c o m
18837
s p e c P ro d u c ts
3
s p e c T im e F r e q M I B
1
3.16.3 SNMP Support
Spectracom’s private enterprise MIB can either be obtained from the Spectracom Customer
Service department via an email or it can also be FTP’d (File Transfer Protocol) out of the
NetClock using an FTP agent such as Microsoft FTP, CoreFTP or any other shareware/freeware
FTP program.
To obtain the MIB file via FTP, using your FTP program, login to the administrative mode with
the admin level password. Change the file transfer mode to “binary”. Navigate to the “MIB”
directory which is located on the root directory. The Spectracom MIB files are located in this
directory. There is a Global (generic) MIB file and a NetClock specific MIB file called “Time
and Frequency”. FTP the files to your desired location on your PC for later transfer to the
SNMP Manager. The MIB files may then be compiled onto the SNMP Manager.
Note: When compiling the MIB files, some SNMP Manager programs may require the MIB
files to be named something specific other than the current name for the files. The MIB file
names (“Global” and “Time and Frequency”) may be changed or edited as necessary to meet the
requirements of the SNMP Manager. Refer to the SNMP Manager documentation for more
information on their requirements.
Model 9183 Instruction Manual
Page 3-95
3.17
System Status
The System Status web browser user interface page provides the user with the software revision
levels, the current time sync status, the results of internal unit testing as well as the features and
options that are currently enabled and disabled.
To navigate to the System Status page, click on the Status and logs page on the bottom blue bar
and then on System Status on the left orange bar. The System Status page cannot be edited so
you do not need to be logged is as config or admin modes when viewing this page. This page is
not dynamic. If a status change occurs while this page is open, the change will not be displayed.
To view the current status, exit and then re-enter this page.
The System Status page consists of four main sections. A sample of each of these sections and a
description of the contents of each section follows:
3.17.1 Dynamic System Information
Uptime: 0 years, 0 days, 1 hours, 54 minutes, 1 seconds
Current internal temperature: 27.75 C (81.95 F)
Major Alarm is (OFF)
Minor Alarm is (OFF)
Time Sync status: In Sync
Time Source: GPS
The Dynamic System Information section contains the elapsed time that the unit has been
powered-up for, the internal temperature of the unit, the status of the major and minor alarms, the
current Time Sync status and the current external reference identifier.
Time Source:
The Time source field contains the current source for time input. The possible inputs are as
follows:
None – No Time Source has been found after startup.
GPS – The GPS receiver is the Primary Time Source for the Models 9183 and 9189.
Modem – When Option 3 is installed, the Modem maybe used as a Primary Time Source or
Secondary (backup) Time Source to GPS for the Model 9183.
User – The Time Source is the result of the user setting the time from the System Setup/System
Time web browser user interface page when no Time Source is present.
Page 3-96
Model 9183 Instruction Manual
3.17.2 Static System Information
Product Name is Spectracom Corp. Model 9183 Application Name is 91XX Application Rev is 2.3.0 Application Date is 07/28/2005 SSH Rev is OpenSSH_3.7.1p2, SSH protocols 1.5/2.0 SSL Rev is OpenSSL 0.9.7d 17 Mar 2004 Boot Monitor Rev is 2.3.0 Unit's Serial Number: 886
GPS Receiver Serial Number: P07ROY 2.1
MAC Address: 00:0c:ec:00:03:76
The Static System Information section of the System status page provides the software
revisions, the NetClock’s Serial Number and the MAC address.
3.17.3 System Test Results
PCB Test
PCC Test
CSL Test
RTC Test
GPS Startup Self-Test
GPS Antenna Sense
Modem Test
Temp Sensor
IRIG Test
Serial Port 1
Serial Port 2
Remote Port 1
Remote Port 2
Front Panel LCD 1
Front Panel LCD 2
Model 9183 Instruction Manual
PASSED (PCB rev: 5)
PASSED (PCC rev: 3)
PASSED (CSL rev: 14)
PASSED
FAILED (Antenna UC)
PASSED
CONSOLE MODE
PASSED
PASSED (1.02)
PASSED (2.03)
PASSED (2.03)
PASSED (2.03)
PASSED (2.03)
PASSED
PASSED
Page 3-97
The System Test Results section contains the results of the internal tests that are run. These test
are not complete checks of the entire paths (For example, the Serial port may pass even though it
has been damaged by a surge).
GPS Startup Self-Test
The GPS Startup Self-Test will indicate the status of the antenna, antenna cable and the GPS
receiver at the time of power-up only. If the antenna cable was not connected, shorted or open at
the time of power-up, and/or if there is a problem with the GPS receiver or antenna or both at the
time of power-up, this test will indicate FAILED. “Antenna UC” means the antenna was not
connected and “Antenna OC” indicates there was a short in the cable at the time of power-up.
“Antenna NV” means an unknown antenna problem existed at power-up. “GPS & Antenna”
means that both GPS receiver and Antenna problems were detected at power-up.
GPS Antenna Sense
The GPS Antenna Sense is a current status of the antenna, antenna cable and the GPS receiver.
If the antenna cable is currently not connected, shorted or open, and/or if there is a problem with
the GPS receiver or antenna or both, this test will indicate FAILED. “Antenna UC” means the
antenna is not currently connected and “Antenna OC” indicates a short in the cable. “Antenna
NV” means an unknown antenna problem. “GPS & Antenna” means that both GPS receiver and
Antenna problems were detected.
Modem Test (Applicable only to units with Option 3 - Modem installed):
The Modem Test will indicate “Console Mode” if the Serial Setup Interface is set to Console
mode instead of Modem mode. This indicates that the modem is not currently being used. If the
modem feature is desired, in the modem configuration page, change the mode to the Modem
mode.
When the NetClock initially boots up, the mode is set to Serial Setup Interface. When the mode
is set to Modem and before every modem dial-out call, the modem is sent a command. If the
unit gets a response from the modem, the field is set to PASSED. If the unit gets no response or
a bad response from the modem, then the field is set to FAILED and the reason is indicated as
shown below:
Reasons:
Not Found – There is no modem connected, the modem is incorrectly connected, or it
not turned on.
Modem Error – The modem gave a response indicating an unspecified problem.
Page 3-98
Model 9183 Instruction Manual
3.17.4 System Features and Options
Security
Modem
Serial Port 1
Serial Port 2
Remote Port 1
Remote Port 2
IRIG Output
Front Panel Display
Relays
Oscillator Disciplining
10 MHZ Frequency Output
NTP Server
TCXO Oscillator
Motorola Oncore M12+ Timing GPS
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
The System Features and Options section provides the current status of all the features and
options that are available for your particular NetClock. Features that are currently turned on will
indicate “ENABLED”. Features that indicate “DISABLED” are not enabled. However, the
disabled features may be “enabled” after the original purchase. If an option, which is enabled,
fails to correctly initialize and become ready to be used its status is ERROR.
Option 3 can be enabled in the field (Options 4 and 5 must be purchased with the unit when it is
initially ordered). With the future purchase of the Modem option (Option 3), we will provide a
“key hash” that will enable the feature to be turned on. Please contact our Sales department to
purchase the option.
The purchase price of the modem option includes the cost for the modem as well as the key to
enable the feature. The modem selection is very limited in compatibility. Not all available
modems are compatible with the Model 9183 (Must be configured as Hayes AT) so we will
supply you with a modem when the option is purchased. If the modem option was not initially
purchased, contact our Sales department to purchase the modem option. Refer to Section 8.1 for
more information regarding Option 3.
Model 9183 Instruction Manual
Page 3-99
3.18
System Time
The System Time page provides a means to manually set the time for test purposes only. It also
provides a handy and simple process to determine the time that the NetClock currently is set to.
This feature reads the information that the NetClock is providing to the external equipment that
is syncing to this device.
To navigate to the System Time page, click on System Setup on the bottom blue bar and then on
System Time on the left orange bar. Refer to
Figure 3-36: System Time for more details. Note: You must be logged into the administrator
mode to make any changes to this page.
Figure 3-36: System Time
Page 3-100
Model 9183 Instruction Manual
The top section of the System Time page provides the ability to set and determine the current
UTC or local time that the NetClock is providing to the other devices connected to it.
Local System Clock:
This field determines if the time output is displayed as UTC or one of the 5 possible local times
that can be created using the Local System Clocks screen. When a Local System clock is
selected here, the time displayed below it will be displayed as configured in that particular local
System Clock (i.e. Eastern time with automatic DST correction). After choosing the desired local
clock from the drop-down, press the Submit button to accept the change. Click System Time
again to bring the page back for viewing.
Current UTC Time: 17:59:10 (Elapsed time based on browser clock. Click 'System Time'
to update.)
This line contains the current time displayed as configured in the Local System Clock dropdown.
The name in the line will indicate either UTC or the name of the selected local clock. Initially,
this is a free-running clock that may or may not be the correct time (The Time displayed isn’t
automatically corrected every second). To determine the current time at a particular moment,
press System Time on the left orange bar. Pressing this button each time will cause the time
displayed to be updated to the current time.
The bottom portion of the System Time page provides a means of manually setting the time
and date. However, when the time and/or date is manually set by the user, the NetClock will not
be synchronized and indicators in all of the outputs will be flagged as unsynchronized. Most
software programs including NTP will ignore the NetClock when these status messages indicate
that the NetClock is not synchronized.
When manually setting the time of the NetClock, the time is entered as UTC- not your local
time. This means the time is not corrected for either Local Time or DST correction. Entering
your local time will cause a several hour error in the NetClock outputs. The amount of error will
depend on which Time Zone you are located in and whether we are currently in DST or in
Standard time.
Manually setting the time of the NetClock is not recommended as the outputs will likely be
unusable because of the time sync status characters in the outputs. When an external reference is
detected, the time and date will be automatically corrected to the real values and the manually set
values will be overwritten. When this occurs, a log entry will be made in the Operational log
indicating the amount of correction that was made from the manually set time. This log then
shows if the time was ever manually set and then corrected by another external reference.
Note: Manually setting the time while synchronizing to the Option 3 Modem will cause loss of
Time Sync which will automatically trigger a dial-out call to attempt to re-sync.
Manually setting the time while synchronizing to GPS will immediately set the time back
to the correct time.
Model 9183 Instruction Manual
Page 3-101
3.19
Variable Holdover:
The time interval between the loss of the primary external reference and the moment that the
NetClock declares loss of Time Sync is known as holdover. While the unit is in the holdover
mode, the time outputs are derived from an internal oscillator. Because of the internal oscillator,
accurate time can still be derived even after the primary reference is removed. The more stabile
the oscillator is without an external reference, the longer this holdover period can be. The
benefit of holdover is that time sync and the availability of the time outputs is not immediately
lost when the reference is no longer available.
The NetClock has a user configurable variable holdover period so that it can be adjusted for
personal requirements and desires. A user can change the length of time that a unit waits in the
holdover mode before loss of time sync. The holdover can be defined by a specific number of
hours to wait, such as 4 hours and 30 minutes. It can also be defined by the estimated error.
However, the estimated error feature is only enabled for the OCXO (Option 5) and Rubidium
(Options 4) products.
The estimated error rates for each oscillator are listed below. These are used when displaying
the current estimated error for the user and when calculating a new holdover length (Option 4
and Option 5 oscillators only).
Oscillator
TCXO
TCXO
OCXO
Rb
Option
Standard
Standard
Option 5
Option 4
Estimated Error Rates
1.0 milliseconds / hour (nominal)
7.2 milliseconds / hour (worst case)
72 microseconds / hour (nominal)
0.18 microseconds / hour (nominal)
Time to reach 2 ms
2 hours (typical)
17 minutes*
28 hours
463 days
Table 3-6: Estimated oscillator error rates
Note: The TCXO Error rate is a worst-case estimate and not typically this value. The nominal
value assumed has been 1 millisecond / hour yielding 2 hours holdover times. The OCXO and
Rb oscillators use the nominal values for estimated error rate to calculate error at the end of
holdover on the web browser user interface. The TCXO does not estimate error for holdover.
But if it did, it probably should use the nominal value, which is more typical. Typically the
error rates for a disciplined oscillator at 25 degrees Celsius will be lower than these values.
Limits on the minimum and maximum length of allowable holdover have been placed on each
oscillator as shown below in Table 3-7.
Oscillator
TCXO
OCXO (Option 5)
Rb (Option 4)
Minimum Length
15 minutes
15 minutes
15 minutes
Maximum Length
24 hours
30 days
730 days (2 years)
Table 3-7: Minimum and Maximum allowable holdover values
Page 3-102
Model 9183 Instruction Manual
If the user sets the length below or above the limits or if the error is too small or large, they will
be notified that the current setting is out of bounds.
To navigate to the Holdover configuration page, click on System Setup on the bottom (blue) bar,
then click on Holdover in the left (orange) page. Configuration of this page requires admin level
login.
3.19.1 Setting the variable holdover value for a TCXO oscillator
The user interface for the TCXO looks like:
Figure 3-37: TCXO variable holdover configuration
Using the “Hours” and “Minutes” adjustable boxes, the user can set the maximum time for the
holdover period. If the length is set to a value greater than 24 hours and 00 minutes, the
NetClock will respond with “Could not set holdover time. Please ensure that holdover times
are greater than 15 minutes and less than 24 hours 0 minutes.” Additionally, if the user sets
this holdover time to less than the dial-out time interval for the modem (If option 3 is installed),
the unit may have periods where it is in the unsynchronized state.
If the unit is currently in sync, the changes to the holdover period will take effect immediately.
If the unit is in holdover, these changes will not take effect until the next holdover period. To
force the changes to take effect immediately, reboot the NetClock.
Model 9183 Instruction Manual
Page 3-103
3.19.2 Setting the variable holdover value for an OCXO or Rubidium
oscillator
The user interface for the OCXO and Rubidium looks like:
Figure 3-38: OCXO and Rb oscillator variable holdover configuration
Set by Time and Set by Hour
Using the radio option, the user can select whether the length of the holdover period is set by the
elapsed time or the estimated error entered.
If the length is greater than 30 days, the user will be given a warning that leap seconds could be
missed while in holdover if they do not have a modem as backup. Missing a leap second will
cause a one second error in the NetClock outputs until the leap second change has been read by
an external reference such as the GPS or modem feature. Additionally, if the user sets the
holdover time to less than the dial out time for the modem, they will be warned that the unit may
have periods where it is in the unsynchronized state.
To use the Set by Error feature, enter in the maximum desired estimated error that you want the
unit to have before it declares it is out of sync and the outputs are no longer used by other
devices. The higher this value, the longer the holdover period will be.The smaller this value, the
Page 3-104
Model 9183 Instruction Manual
shorter the holdover period will be. To calculate the approximate time of holdover period from a
desired error value, from the estimated error rate table, determine the estimated error rate for
your particular oscillator and divide this value into the maximum desired value. The answer will
be approximate number of hours that the unit will be able to run in holdover mode for the desired
error.
If the unit is currently in sync, the changes will take effect immediately. If the unit is in
holdover, the changes will not take effect until the next holdover. To force the changes to take
effect immediately, reboot the NetClock.
Time in Holdover
Time in Holdover displays either the amount of time that the NetClock has been in the holdover
mode, or displays a phrase that the unit is not currently in the holdover mode. If the unit is
currently in the holdover mode (Lost external reference but the unit is still “synchronized”), this
field will show the number of days, hours, minutes and seconds that the unit has been in the
holdover mode (Elapsed time from the last good external reference).
If the unit is not currently in holdover mode because it either currently receiving an external
reference or because the variable holdover period has expired and the unit is no longer
“synchronized”, the phrase "Not In Holdover" is displayed instead.
Model 9183 Instruction Manual
Page 3-105
Page 3-106
Model 9183 Instruction Manual
4 Operation
4.1
Front Panel
The front panel of the NetClock consists of one Ethernet connector which has two small
indicator lamps, two main status LED’s and two LCD displays. The two status lights are “Sync”
and “Power”. The LCD’s are configurable to display various time, data, version information
formats. Refer to Figure 4-1 for a picture of the front panel.
The Spectracom NetClock Master Clock has two main status LED’s present on the front panel.
These status lights provide the user with the indication that power is applied to the unit (Power
LED) and that the NetClock is currently synchronized or not synchronized (Sync LED). The
power light will be blank if power is not applied or green if power is applied. The Sync light has
many states to indicate the current status of the unit.
The Ethernet connector provides an interface to the network for NTP synchronization and to
obtain access to the Web Browser. The Ethernet connector has two small indicator lights just
above the connector. These lights are known as Good Link (Green LED) and Activity (Orange
LED). The Good Link light indicates a connection to the network is present. The activity light
will blink when network traffic is detected.
The states of the Power, Sync and Ethernet LED’s are listed in Section 4.1.1.
Model 9183 Instruction Manual
Page 4-1
Figure 4-1: Front panel display
Page 4-2
Model 9183 Instruction Manual
4.1.1
Status Indicator
At power up, a quick LED test is run. The unit displays a Red – Green – Orange sequence to
ensure the operation of the LEDs.
The table on the following page describes the operation of the LEDs. In this table, the terms
“Blink” and “Flash” are used.
Blink is defined as ½ second on, ½ second off
Flash is defined as 1/20 second on, 19/20 second off
LABEL COLOR ACTIVITY DESCRIPTION
POWER Green
On
Off
Power is supplied to the NetClock.
Power is disconnected.
Multi
Off
No fault but not synchronized to GPS. Holdover
spec has not been met.
Green On
Synchronized to GPS. Time is valid and within the
Locked to GPS accuracy specs.
Blinking
Green
Holdover mode. Not synchronized to GPS but time
is still within Holdover accuracy specs. Also
indicates the unit is synchronized with the optional
dial-out modem (Option 3).
Yellow On
No longer synchronized to GPS but no unit fault.
Time accuracy may not be meeting holdover specs.
Blinking
Yellow
Unit is in power-up initialization mode. The unit is
in this mode for the brief period between power on
and when it is operationally ready to receive satellite
data.
Flashing Red
GPS antenna fault. This flash may occur over any of
the other color conditions at runtime.
Red On
Unit fault. Time may not be valid. Overrides all
other indicators.
Blinking Red
If the unit fails Power On Self Test (POST) then the
indicator will blink in a sequence indicating the
failure code (consult factory)
Ethernet Yellow
(left)
On
Off
LAN Activity detected.
No LAN traffic detected.
Ethernet Green
(right)
On
Off
LAN Link established 10 or 100 Mb/s.
No link established.
SYNC
Table 4-1: Status Indicator
Model 9183 Instruction Manual
Page 4-3
4.2
Rear Panel
The rear panel provides several different outputs that are available for interfacing the NetClock
to various systems as well as a means of initially configuring the unit’s network settings. The
rear panel also has a power jack for the power input, a connection for the GPS antenna and relay
contacts for alarm monitoring and event alerts. Refer to Figure 4-2: Rear panel illustration for a
drawing of the rear panel.
The GPS Antenna connection is an “N” type connector for the GPS input from the antenna.
The power jack is the input for the DC power.
There are three configurable alarm/event relays (Relays 1, 2, 3) available for remote alerts and
monitoring.
The Serial Setup Interface provides network and output port configuration capability.
The two RS-485 connectors (RS-485 ports 1 and 2) provide an RS-485 data output for
synchronizing devices that accept an RS-485 input, such as wall display clocks and add-on
Model 9188 Ethernet Time Servers.
Serial Comm 1 and Serial Comm 2 are “DB9 female” connectors that provide RS-232 data
output to devices that can accept an RS-232 input for synchronization.
IRIG is a BNC output that provides an IRIG signal for synchronizing certain model voice
recorders.
1PPS is a BNC output providing a once-per-second squarewave output.
FREQ OUT is a BNC output providing a 10MHz sinewave output.
Page 4-4
Model 9183 Instruction Manual
Figure 4-2: Rear panel illustration
Model 9183 Instruction Manual
Page 4-5
4.3
4.3.1
Leap Second occurrence
Reasons for a Leap Second correction
A Leap Second is an intercalary, one-second adjustment that keeps broadcast standards for time
of day close to mean solar time. Leap seconds are necessary to keep time standards
synchronized with civil calendars, the basis of which is astronomical. They are used to keep the
earth’s rotation in sync with the UTC time.
If it has been determined by the International Earth Rotation and Reference Systems Service
(IERS) that a Leap Second needs to applied, this time correction occurs only at the end of a UTC
month, and has only ever been inserted at the end of June 30 or December 31. A Leap Second
may be either added or removed, but in the past, the leap seconds have always been added
because the earth’s rotation is slowing down.
Historically, Leap seconds have been inserted about every 18 months. However, the Earth's
rotation rate is unpredictable in the long term, so it is not possible to predict the need for them
more than six months in advance.
The NetClock can be alerted of impending leap seconds by either of the following methods:
1. GPS Receiver – The GPS satellite system transmits information regarding a Leap second
adjustment at a specific Time and Date an arbitrary number of months in advance.
2. Modem – (Applicable to only units with Option 3 Modem installed). During a modem
dial-out call, the call service indicates that a Leap second adjustment at the end of this
current calendar month will occur.
4.3.2
Leap Second alert notification
The NetClock will announce a pending Leap Second adjustment by the following methods:
1. Data Formats 2 and 7 on the Serial and Remote Ports contain a Leap Second indicator.
During the entire calendar month preceding a Leap Second adjustment, these Formats
indicate that at the end of the current month a Leap Second Adjustment will be made by
having a ‘L’ rather than a ‘ ‘ (space) character in the data stream. Note that his does not
indicate the direction of the adjustment as adding or removing seconds. These formats
always assume that the Leap Second will be added, not removed.
2. NTP Packets contain a Leap Indicator Bit. In the 24 hours preceding a Leap Second
Adjustment, the Leap Indicator Bits (2 bits) which normally are 00b for sync are 01b (1)
for Add a Leap Second and 10b (2) for remove a Leap Second. The bit pattern 11b (3)
indicates out of sync and in this condition NTP does NOT indicate Leap seconds. The
Sync state indicates leap seconds by indicating sync can be 00b, 01b, or 02b.
Page 4-6
Model 9183 Instruction Manual
Important Note: It is the responsibility of the client software utilizing either the Data Formats
or NTP time stamps to correct for a Leap Second occurrence. The NetClock will make
the correction at the right time. However, because computers and other systems may not
utilize the time every second, the Leap second correction may be delayed until the next
scheduled interval, unless the software properly handles the advance notice of a pending
Leap Second and applies the correction at the right time.
3. The Dynamic System Information box in the “System Status” page located under the web
page of “Status and Logs” will display a Leap Second Status box indicating +1 or -1 Leap
second adjustment at the end of the month to users during the entire calendar month
preceding the actual adjustment. Refer to Figure 4-3 and Figure 4-4.
Figure 4-3: Negative Leap Second indication
Figure 4-4: Positive Leap Second indication
4.3.3
Sequence of a Leap Second correction being applied
1. The following is the time output sequence that the Model 9183 will utilize to apply the
Leap second at UTC midnight (Not local time midnight. The Local time at which the
adjustment is made will depend on which Time Zone you are located in).
A) Sequence of seconds output when adding a leap second:
56, 57, 58, 59, 60, 0, 1, 2, 3, …
B) Sequence of seconds output when removing Leap seconds:
56, 57, 58, 0, 1, 2, 3, 4, …
2. An entry will be made in the Operational log that the time was adjusted for a Leap
Second.
Model 9183 Instruction Manual
Page 4-7
A) An example log entry for a Positive Leap Second is as follows:
TIME= 23:59:59 DATE= 2005-12-31
System Clock Service
Leap second inserted at end of month.
B) An example log entry for a Negative Leap Second is as follows:
TIME= 23:59:59 DATE= 2005-12-31
System Clock Service
Leap second removed at end of month.
Page 4-8
Model 9183 Instruction Manual
5 Troubleshooting
5.1
Front Panel Power and Sync Lamps
Symptom
Cause
Corrective Action
Power LED
is off
No power to the unit
Ensure the AC power is live to the power adapter
Ensure the adapter is plugged in properly into the unit
Ensure no other connecting cables to the unit are pinched or shorted
Replace the power adapter
New install
and Sync
LED is not lit
Not enough time
has elapsed or can’t
track satellites
If less than 20 minutes since power-on, continue monitoring. If
longer than about 20 minutes, refer to section 5.3, GPS reception
troubleshooting.
Flashing
Green
(Known as holdover
mode)
(Time is still valid. Other devices will still be synchronized).
Sync LED
Successfully
synchronized with
optional dial-out
modem (Option 3).
OR
Recently stopped
Tracking satellites (The
unit has not timed-out
of hold-over mode).
Yellow
Not tracking
Satellites (No longer in
hold-over mode).
Flashing Red
GPS antenna fault.
Red stays On
Unit fault. Time may
not be valid. Overrides
all other indicators.
If the unit fails Power
On Self Test (POST)
then the indicator will
blink in a sequence
indicating the failure
code (consult factory)
Blinking Red
This is a normal indication when the unit is synchronized via the
optional dial-out modem (Option 3).
If not using the optional dial-out modem, refer to section 5.3, GPS
reception troubleshooting. Review the Alarm and Qualification logs.
(Time is no longer valid). Other devices will not be synchronized).
Refer to section 5.3, GPS reception troubleshooting. Review the
Alarm and Qualification logs.
If the modem dial-out is enabled, also need to verify modem
operation as well. The modem should have prevented this from
occurring.
There is a short or open in the GPS antenna cable. Verify the antenna
is connected. Using a multimeter, measure continuity of the cable to
verify no open or shorts in the GPS cable. Refer to section 5.4, GPS
reception troubleshooting.
Contact Customer Service
Contact Customer Service
Table 5-1: Status of Front Panel Power and Sync lampsFront Panel LAN Connector
Model 9183 Instruction Manual
Page 5-1
Symptom
LAN Green
LED is off
(This LED
also known as
Good Link
indicator).
Cause
Unit is not connected to the
network
LAN Green
on the
NetClock but
the Gold Link
indicator on
the
HUB/Switch
is not lit.
Can “Ping”
the unit but
can’t point
web browser
to the unit
Can use web
browser to
configure the
unit but can’t
synchronize
any PC’s with
the NetClock
The NetClock and the
HUB/Switch are not
communicating at the correct
port speed.
Corrective Action
Check LAN cable connections (Straight-thru
network cable if connected to Hub/Switch, crossover if connected direct to a PC).
Be sure to use a straight-through cable when
connecting to a hub, a cross-over cable when
connecting directly to a PC.
Check that the hub/switch/router device port is
active and set to the correct port speed.
If the Hub/switch is set to auto, power cycle the
NetClock with the network cable connected. This
will cause Auto-Negotiate to determine the settings
of the HUB/Switch (Auto-Negotiate only occurs at
power-on).
Try setting the HUB/Switch to 100mbps and
10mpps
Gateway not configured
correctly
Web Browser proxy settings
not correct
If the network has a Gateway, verify the Gateway
has been set correctly and is enabled.
Verify the proxy settings in the web browser
program are correct.
PC software not installed or
configured correctly.
Install YATS32 shareware program from
www.dillobits.com. This program will allow you to
view the raw NTP data to verify that the NetClock
is outputting time data. Refer to the Spectracom
website Support page for additional information on
YATS32.
Refer to Spectracom website Support page for
additional information on syncing PC’s.
Verify the Sync lamp is solid green.
Table 5-2: Status of Front Panel LAN connector
Page 5-2
Model 9183 Instruction Manual
5.2
Verify operation of a Serial port
If you want to verify the operation of a Serial port output, you can use a straight thru standard
serial cable and a terminal emulator such as HyperTerminal or Procomm to view the output data.
For RS-232 cable information as well as information to configure HyperTerminal, refer to
http://www.spectracomcorp.com/support/applicationNotes.php.
To verify the operation of the Serial port, configure the terminal emulator program with the same
baud rate as the port is configured for (such as 9600 baud). With the serial cable connected to
the Serial port and with the port configured as “Request character” mode and the character set to
a capital letter “T”, each time a Capital letter “T” is pressed on the keyboard, the port will
respond with a time stamp (any other character other than a “T” will respond with a “*” ).
If the port is configured as “multicast” mode, with the serial cable connected, the time stamp
should be displayed on the PC every second.
If the time stamp is displayed on the PC, the Serial port is functioning. If the time stamp is not
displayed, verify the serial cable, the port configuration for the correct baud rate and the
configuration of the terminal emulation program. Refer to the Spectracom Application Note
regarding HyperTerminal at:
http://www.spectracomcorp.com/support/pdf/using_hyperterminal.pdf.
5.3
Verify operation of a Spectracom TimeTap
If you want to verify the operation of a Spectracom TimeTap, follow the same process as Section
5.2, but instead of connecting a serial cable into the PC, connect the TimeTap directly to the
Serial comm port on the PC (A DB9 to DB25 adapter is required to verify operation of a Model
8178T TimeTap).
The TimeTap outputs data every second without the need to type any characters. As long as the
TimeTap, the Remote output and the RS-485 cabling are good, a once-per-second data stream
will be present on the monitor. If no data is seen, check the cabling, the baud rate of the Remote
port, the Remote port itself and the terminal emulator configuration.
5.4
GPS reception
Please review this section prior to calling the Spectracom Customer Service Department. If the
reception problem cannot be solved following the guidelines outlined in this section, please call
for Customer Service at 585.321.5800.
Model 9183 Instruction Manual
Page 5-3
5.4.1
No GPS reception
Cable or connector problem: Antenna problem alarm and SNMP traps should be evident.
Measure the antenna cable resistance to verify the integrity of the cable and connectors. Remove
the antenna cable from the rear panel of the receiver and measure the resistance from the coax
center to shield. Refer to Table 5-3 for typical resistance values of the antenna and inline
amplifier alone and when combined.
DEVICE
DESCRIPTION
RESISTANCE (SP)
8228
Indoor Antenna
140 ohms
8225
Outdoor Antenna
180 ohms
8227
In-line Amplifier
165 ohms
8225 and 8227
Antenna/Amplifier
85 ohms
Table 5-3: Typical Antenna Cable Resistance Values
Failed Impulse Suppressor: The Model 8226 provides lightning protection when the outdoor
GPS antenna is used. The Model 8226 has high impedance when measuring from the center
conductor to ground and a low throughput resistance. A failing impulse suppressor may be
tripping prematurely. The easiest way to test the Model 8226 is to temporarily replace it with a
Type N barrel connector. If the receiver begins tracking satellites within 20 minutes, the impulse
suppressor has failed and must be replaced.
Cable Length: The Model 8228 Indoor Antenna is supplied with 50 feet of antenna cable. Do
not add cable. Excessively long or improper cable type may prevent the receiver from tracking
satellites. Refer to Section 2.4 for cable recommendations when using the Model 8225 Outdoor
Antenna.
Antenna Location: The antenna must have a good view of the sky. Refer to Section 2.4 for
indoor antenna guidelines and Section 2.4 for outdoor antenna guidelines.
Window Type: Windows with metal film coatings, metal screens or blinds may impede GPS
reception. If a window-mount antenna is being used, place the unit into the single satellite mode
of operation. Refer to Section 3-22 for more information.
Page 5-4
Model 9183 Instruction Manual
5.4.2
Low GPS Quality
Cable Length: Excessively long or improper cable type may cause low GPS quality due to cable
attenuation. Long GPS antenna lengths may require an inline amplifier or lower loss cable. Refer
to Section 2.4.2 for GPS cable recommendations and Section 2.4.5 for inline amplifier
information when using the Model 8225 Outdoor Antenna.
The Model 8228 Indoor Antenna is provided with a 50-foot antenna cable. Do not substitute or
add coax to the provided cable.
Antenna Location: The antenna must have a view of the sky with views to the horizon. Nearby
obstructions can reduce the receiver’s ability to track the maximum number of satellites
available.
Window Type: Windows with metal film coatings, metal screens or blinds may reduce GPS
reception. If a window-mount antenna is being used, place the unit into the single satellite mode
of operation. Refer to Section 3-22 for more information.
Model 9183 Instruction Manual
Page 5-5
5.5
Modem Dial-out (Option 3) troubleshooting
This section provides assistance with troubleshooting the operation of the modem dial-out
feature for those units that have option 3 installed. There are two procedures to verify proper
operation of the modem operation. The first test procedure (Test 1) is to determine if the modem
will operate and connect to NIST without the Master Clock connected. The second procedure
(Test 2) is to ensure the modem operates and connects to NIST when being controlled by the
Master Clock. For assistance, please contact Spectracom Tech support at the contact information
located at the end of this document.
5.5.1
Test 1: To verify modem is dialing and connecting to NIST in standalone mode:
This test will verify the operation of the modem with the Master Clock disconnected and not
controlling the modem. If this test does not pass, the problem is with either the modem, the phone line
or with NIST. If this test passes, next try dialing out with the modem connected to the Master Clock
and follow the procedure below for testing with the unit connected to the modem. (Below these
procedures are a sample response of the interaction of the PC, Master Clock and modem). The
modem MUST be connected to an analog phone line to operate (It will not operate on a digital phone
line).
1) Disconnect the modem from the Serial Setup Interface connector on the rear panel of the
Master Clock.
2) Remove the null-modem adapter and plug the DB9 end of the cable into a PC’s Comm port
and the DB25 end of the cable into the modem.
3) Open HyperTerminal, Procomm or any other terminal emulator program on the PC. Direct
the program to the PC’s Comm port at 9600 baud.
4) The modem local echo is disabled by default. To see what you are typing, type ate1
5) Type atz <enter> to reset the modem settings.
6) Type atm1 <enter> to turn the modem speaker on (When the modem is connected to the
Spectracom clock, the unit will always disable the speaker if software is version 2.1.6 or
below).
Page 5-6
Model 9183 Instruction Manual
7) Type atdt 9w1-303-494-4774 <enter> to dial NIST. 40 consecutive time messages will be
displayed. NIST will then disconnect the call.
Note: If you receive the initial connection and “CD” lights on the modem but the 40 time messages
are not received, the modem connected to NIST but NIST is having difficulties sending time
data. This can happen if NIST is experiencing heavier than normal traffic.
Operation of the modem indicator lights located under the black window during a phone call to
NIST:
OH (Off Hook) lights when call is started.
CD (Carrier Detect) lights after successful negotiation of modem and NIST.
DATA flashes as data is being received from NIST.
Below is a sample interaction of the modem dialing NIST
ate1
OK
atz
OK
atm1
OK
atdt 9w1303-494-4774
CONNECT 9600
National Institute of Standards and Technology
Telephone Time Service, Generator 2b
Enter the question mark character for HELP
DL
MJD YR MO DA HH MM SS ST S UT1 msADV
<OTM>
53215 04-07-29 12:45:53 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:54 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:55 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:56 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:57 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:58 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:45:59 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:00 50 0 -.5 045.0 UTC(NIST) *
Model 9183 Instruction Manual
Page 5-7
53215 04-07-29 12:46:01 50 0 -.5 083.8 UTC(NIST) *
53215 04-07-29 12:46:02 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:03 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:04 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:05 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:06 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:07 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:08 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:09 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:10 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:11 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:12 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:13 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:14 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:15 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:16 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:17 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:18 50 0 -.5 205.0 UTC(NIST) *
53215 04-07-29 12:46:19 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:20 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:21 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:22 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:23 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:24 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:25 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:26 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:27 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:28 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:29 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:30 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:31 50 0 -.5 045.0 UTC(NIST) *
53215 04-07-29 12:46:32 50 0 -.5 045.0 UTC(NIST) *
5.5.1.1.1
5.5.2
NO CARRIER
Test 2: To verify operation of the modem while connected to the
NetClock
Below is the verification that the modem is properly being controlled by the Spectracom Master
Clock and the modem is successfully dialing and connecting to NIST.
For the modem to function with the NetClock, the modem mode needs to be selected in the
Modem configuration page of the web browser user interface and the unit rebooted to accept the
change from console mode.
If the unit is already powered-up and not synchronized, choosing dial-out now and hitting submit
will cause the unit to connect to NIST. If the unit is already synchronized, this option is not
Page 5-8
Model 9183 Instruction Manual
available (The dialout now function is not available for operation if the NetClock is in either
holdover or sync mode). To operate the modem if it is in currently in sync, disconnect the
antenna and wait until the variable holdover period expires or power cycle the unit to clear the
sync condition. Then, the dial-out now function will be available.
Once the NetClock has dialed and synchronized to NIST, the unit will be in holdover mode until
the variable holdover period expires (Devices syncing to the NetClock will still sync) indicated
by the sync light flashing green. After the variable holdover expires, the unit will declare loss of
sync (Sync lamp turns red) or when the scheduled Time Verification call occurs, the modem
automatically dials NIST again. If connection is made, holdover is restored (Sync lamp flashes
green again).
Verify proper operation of the modem by observing the status of the front panel sync lamp
flashing green after connection to NIST and verifying the Model dial-out logs as shown below.
If the sync lamp is also flashing red, this is because the GPS antenna is disconnected from the
Master Clock. This is not directly related to the modem dial-out feature but if the antenna has
been connected in the past, it is related to the reason why the modem is now dialing-out
unexpectedly (Antenna problem causing loss of GPS time Sync).
Sample of successful Modem dial out log.
Log entry
TIME= 12:36:59 DATE= 2004-07-29
Modem dial out to 9 1-303-494-4774.
TIME= 12:37:33 DATE= 2004-07-29
on Time Marker. Front panel
Synchronized clock to modem time.
Description of log entry
(Beginning dial out process)
(Connected to NIST and got a synchronized
(date & time is Updated).
TIME= 12:38:10 DATE= 2004-07-29
(Modem disconnected from NIST, calculating 1PPS
correction)
Dial out successful. Sync'ing system 1PPS.
TIME= 12:38:12 DATE= 2004-07-29
(1PPS correction completed. Unit now in
holdover)
Synchronized 1PPS to modem time
If you are really in console mode but changed the setup to modem and did not reboot (Still in
console mode) and try to force a dial-out now, this is the dial-out log result:
TIME= 12:52:47 DATE= 2004-07-29
Modem dial out to 9 1-303-494-4774.
(First response)
TIME= 12:52:47 DATE= 2004-07-29
Timeout occurs, operation is aborted.
Model 9183 Instruction Manual
Page 5-9
TIME= 12:52:49 DATE= 2004-07-29
Modem dial out to 9 1-303-494-4774.
(Second response)
TIME= 12:52:49 DATE= 2004-07-29
Timeout occurs, operation is aborted.
Note: There are two responses because the “retry call” default (In the modem dial-out
configuration page) is set to twice.
5.6
Customer Service
Refer to Section 1.2, Warranty Information and Product Support for information on contacting
Page 5-10
Model 9183 Instruction Manual
6 SERIAL DATA FORMATS
This section describes each of the Data Format selections available on the RS-232 (Serial
Comm) and RS-485 (Remote Port) outputs. Format selection is made as part of the Serial Comm
and Remote port configuration. Most applications utilize either Data Format 0 or Data Format 2.
6.1
Format 0:
Format 0 includes a time sync status character, day of year, time reflecting Time Zone Offset and
DST corrections when enabled. Format 0 also includes the DST/Standard Time indicator, and the
Time Zone Offset value. Format 0 data structure is shown below:
CR LF I ^ ^ DDD ^ HH:MM:SS ^ DTZ=XX CR LF
where:
CR =
Carriage Return
LF =
Line Feed
I=
Time Sync Status (space, ?, *)
^=
space separator
DDD =
Day of Year (001 - 366)
HH =
Hours (00-23)
:=
Colon separator
MM =
Minutes (00-59)
SS =
Seconds (00- 60)
D=
Daylight Savings Time indicator (S,I,D,O)
TZ =
Time Zone
XX =
Time Zone offset (00-23)
The leading edge of the first character (CR) marks the on-time point of the data stream.
The time sync status character I is defined as described below:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manual
through the Setup Port Interface.
The Daylight Saving Time indicator D is defined as:
S=
I=
D=
O=
During periods of Standard time for the selected DST schedule.
During the 24-hour period preceding the change into DST
During periods of Daylight Saving Time for the selected DST schedule
During the 24-hour period preceding the change out of DST
Example: 271 12:45:36 DTZ=08
Model 9183 Instruction Manual
Page 6-1
The example data stream provides the following information:
Sync Status:
Date:
Time:
Page 6-2
Time synchronized to GPS
Day 271
12:45:36 Pacific Daylight Time
D = DST, Time Zone 08 = Pacific Time
Model 9183 Instruction Manual
6.2
Format 1:
This format provides the fully decoded time data stream. Format 1 converts the received day of
year data (001-366) to a date consisting of day of week, month, and day of the month. Format 1
also contains a time sync status character, year, and time reflecting time zone offset and DST
correction when enabled. Format 1 data structure is shown below:
CR LF I ^ WWW ^ DDMMMYY ^ HH:MM:SS CR LF
where:
CR =
LF =
I=
^=
WWW =
DD =
MMM =
YY =
HH =
:=
MM =
SS =
Carriage Return
Line Feed
Time Sync Status (space, ?, *)
space separator
Day of Week (SUN, MON, TUE, WED, THU, FRI, SAT)
Numerical Day of Month (^1-31)
Month (JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC)
Year without century (99, 00, 01 etc.)
Hours (00-23)
Colon separator
Minutes (00-59)
Seconds (00 - 60)
The leading edge of the first character (CR) marks the on-time point of the data stream.
The time sync status character I is defined as described below:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
Example: * FRI 20APR01 12:45:36
The example data stream provides the following information:
Sync Status: The clock is not time synchronized to GPS. Time is derived from the battery
backed clock or set manually
Date:
Time:
Friday, April 20, 2001
12:45:36
Model 9183 Instruction Manual
Page 6-3
Note: Data Format 1 has an available modification that may be made to the data stream
structure. Most external systems utilizing Data Format 1 will look for a single digit day of the
month for day 1 through day 9, with a space in front of each digit ( ^1, ^2, ^3 … 10,11… )
whereas other systems need to see a two digit day of the month for all days 1 through 9 with a
leading 0 instead of a space (01, 02, 03… 10, 11…). If your device requires the two digit day of
the month for days 1 through 9, the following procedure will change the Data Format 1 structure
to provide this.
Connect to the Serial Setup Interface port with a PC running HyperTerminal OR telnet into the
NetClock using the IP address of the unit.
To change Data Format 1 output on a Serial port to a leading 0, type:
ser fmt [1/2] 1 zero <enter> (Where 1 or 2 is the desired Serial port number)
To change Data Format 1 output on a Remote RS-485 port to a leading 0, type:
rem fmt [1/2] 1 zero <enter> (Where 1 or 2 is the desired Remote port
number).
To change Data Format 1 output on a Serial port back to a leading space, type:
ser fmt [1/2] 1 <enter> (Where 1 or 2 is the desired Remote port number).
To change Data Format 1 output on a Remote RS-485 back to a leading space, type:
rem fmt [1/2] 1 <enter> (Where 1 or 2 is the desired Remote port
number).
Page 6-4
Model 9183 Instruction Manual
6.3
Format 2:
This format provides a time data stream with millisecond resolution. The Format 2 data stream
consists of indicators for time sync status, time quality, leap second and Daylight Saving Time.
Time data reflects UTC time and is in the 24-hour format. Format 2 data structure is shown
below:
Note: Format 2 cannot be configured for a Time Zone Offset or with automatic Daylight
Saving Time adjustment. Attempting to configure a Local clock using Data Format
2 with either a Time Zone Offset or automatic DST rule will result in an error
message.
CR LF IQYY ^ DDD ^ HH:MM:SS.SSS ^ LD
where:
CR = Carriage Return
LF = Line Feed
I = Time Sync Status (space, ?, *)
Q = Quality Indicator (space, A, B, C, D)
YY = Year without century (99, 00, 01 etc.)
^ = space separator
DDD =
Day of Year (001 - 366)
HH = Hours (00-23 UTC time)
: = Colon separator
MM = Minutes (00-59)
SS =
Seconds (00-60)
. = Decimal Separator
SSS = Milliseconds (000-999)
L = Leap Second Indicator (space, L)
D = Daylight Saving Time Indicator (S,I,D,O)
The leading edge of the first character (CR) marks the on-time point of the data stream.
The time sync status character I is defined as described below:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
The quality indicator Q provides an inaccuracy estimate of the output data stream. When the
receiver is unable to track any GPS satellites, a timer is started. Table 6-2: Table of Quality
Indicators lists the quality indicators and the corresponding error estimates based upon the GPS
receiver 1 PPS stability, and the time elapsed tracking no satellites. The Tracking Zero Satellites
timer and the quality indicator reset when the receiver reacquires a satellite.
Model 9183 Instruction Manual
Page 6-5
Quality Time
TCXO Error (Standard
(hours) configuration)
(milliseconds)
Space
Lock
<1
A
<10
<10
B
<100
<100
C
<500
<500
D
>500
>500
OCXO Error
(Option 5)
(milliseconds)
<0.01
<0.72
<7.2
<36
>36
Rubidium Error
(Option 4)
(microseconds)
<0.3
<1.8
<18
<90
>90
Table 6-1: Table of Quality Indicators
The leap second indicator L is defined as:
(Space) =
L=
When a leap second correction is not scheduled for the end of the month.
When a leap second correction is scheduled for the end of the month.
The Daylight Saving Time indicator D is defined as:
S=
I=
D=
O=
During periods of Standard time for the selected DST schedule.
During the 24-hour period preceding the change into DST.
During periods of Daylight Saving Time for the selected DST schedule.
During the 24-hour period preceding the change out of DST.
Example: ?A01 271 12:45:36.123 S
The example data stream provides the following information:
Sync Status: The clock has lost GPS time sync. The inaccuracy code of “A” indicates the
expected time error is <10 milliseconds.
Date: Day 271 of year 2001.
Time: 12:45:36 UTC time, Standard time is in effect.
Page 6-6
Model 9183 Instruction Manual
6.4
Format 3:
Format 3 provides a format identifier, time sync status character, year, month, day, time with
time zone and DST corrections, time difference from UTC, Standard time/DST indicator, leap
second indicator and on-time marker. Format 3 data structure is shown below:
FFFFI^YYYYMMDD^HHMMSS±HHMMD L # CR LF
where:
FFFF =
I=
^=
YYYY =
MM =
DD =
HH =
MM =
SS =
±=
HHMM =
D=
L=
#=
CR =
LF =
Format Identifier (0003)
Time Sync Status (Space, ? *)
space separator
Year (1999, 2000, 2001 etc.)
Month Number (01-12)
Day of the Month (01-31)
Hours (00-23)
Minutes (00-59)
Seconds (00-60)
Positive or Negative UTC offset (+,-) Time Difference from UTC
UTC Time Difference Hours, Minutes (00:00-23:00)
Daylight Saving Time Indicator (S,I,D,O)
Leap Second Indicator (space, L)
On time point
Carriage Return
Line Feed
The time sync status character I is defined as:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
The time difference from UTC, ±HHMM, is selected when the Serial Comm or Remote port is
configured. A time difference of -0500 represents Eastern Time. UTC is represented by +0000.
The Daylight Saving Time indicator D is defined as:
S=
I=
D=
O=
During periods of standard time for the selected DST schedule.
During the 24-hour period preceding the change into DST.
During periods of Daylight Saving Time for the selected DST schedule.
During the 24-hour period preceding the change out of DST.
Model 9183 Instruction Manual
Page 6-7
The leap second indicator L is defined as:
(Space) =
When a leap second correction is not scheduled at the end of the month.
L=
When a leap second correction is scheduled at the months end.
Example: 0003 20010415 124536-0500D #
The example data stream provides the following information:
Data Format: 3
Sync Status:
Time Synchronized to GPS.
Date:
April 15, 2001.
Time:
12:45:36 EDT (Eastern Daylight Time). The time difference is 5 hours
behind UTC.
Leap Second: No leap second is scheduled for this month.
Page 6-8
Model 9183 Instruction Manual
6.5
Format 4:
Format 4 provides a format indicator, time sync status character, modified Julian date, time
reflecting UTC with 0.1 millisecond resolution and a leap second indicator. Format 4 data
structure is shown below:
FFFFIMJDXX^HHMMSS.SSSS^L CR LF
where:
FFFF =
I=
MJDXX =
HH =
MM =
SS.SSSS =
L=
CR =
LF =
Format Identifier (0004)
Time Sync Status (Space, ? *)
Modified Julian Date
Hours (00-23 UTC time)
Minutes (00-59)
Seconds (00.0000-60.0000)
Leap Second Indicator (^, L)
Carriage Return
Line Feed
The start bit of the first character marks the on-time point of the data stream.
The time sync status character I is defined as:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
The leap second indicator L is defined as:
(Space) =
L=
When a leap second correction is not scheduled at the end of the month.
when a leap second correction is scheduled at the months end.
Example: 0004 50085 124536.1942 L
The example data stream provides the following information:
Data format:
Sync Status:
Modified Julian Date:
Time:
Leap Second:
4
Time synchronized to GPS.
50085
12:45:36.1942 UTC
A leap second is scheduled at the end of the month.
Model 9183 Instruction Manual
Page 6-9
6.6
Format 7:
This format provides a time data stream with millisecond resolution. The Format 7 data stream
consists of indicators for time sync status, leap second and Daylight Saving Time. Time data
reflects UTC time and is in the 24-hour format. Format 7 data structure is shown below:
CR LF i^YY^DDD^HH:MM:SS.FFFL^D CR LF
where:
CR = Carriage Return
LF = Line Feed
I = Time Sync Status (space, ?, *)
YY = Year without century (99, 00, 01 etc.)
^ = space separator
DDD =
Day of Year (001 - 366)
HH = Hours (00-23 UTC time)
: = Colon separator
MM = Minutes (00-59)
SS =
Seconds (00-60)
. = Decimal Separator
SSS = Milliseconds (000-999)
L = Leap Second Indicator (space, L)
D = Daylight Saving Time Indicator (S,I,D,O)
The leading edge of the first character (CR) marks the on-time point of the data stream.
The time sync status character I is defined as described below:
(Space) =
Whenever the front panel Time Sync lamp is green.
?=
When the receiver is unable to track any satellites and the Time Sync lamp is red.
*=
When the receiver time is derived from the battery backed clock or set manually
through the Setup Port Interface.
The leap second indicator L is defined as:
(Space) =
L=
When a leap second correction is not scheduled for the end of the month.
When a leap second correction is scheduled for the end of the month.
The Daylight Saving Time indicator D is defined as:
S=
I=
D=
O=
Page 6-10
During periods of Standard time for the selected DST schedule.
During the 24-hour period preceding the change into DST.
During periods of Daylight Saving Time for the selected DST schedule.
During the 24-hour period preceding the change out of DST.
Model 9183 Instruction Manual
Example: ? 01 271 12:45:36.123 S
The example data stream provides the following information:
Sync Status: The clock has lost GPS time sync.
Date: Day 271 of year 2001.
Time: 12:45:36 UTC time, Standard time is in effect.
Model 9183 Instruction Manual
Page 6-11
6.7
Format 8:
Format 8 includes a time sync status character, the four digit year, day of year, time reflecting
Time Zone Offset and DST corrections when enabled. Format 8 also includes the DST/Standard
Time indicator, and the Time Zone Offset value. Format 8 data structure is shown below:
CR LF I ^ ^YYYY^ DDD ^ HH:MM:SS ^ D+XX CR LF or
CR LF I ^ ^YYYY^ DDD ^ HH:MM:SS ^ D-XX CR LF
where
CR = Carriage Return
LF = Line Feed
I = Time Sync Status (space, ?, *)
YYYY = Four digit year indication
^ = space separator
DDD = Day of Year (001 - 366)
HH = Hours (00-23)
: = Colon separator
MM = Minutes (00-59)
SS = Seconds (00 - 60)
D = Daylight Savings Time indicator (S,I,D,0)
XX = Time Zone Switch Setting (+/- 00 to 12)
The leading edge of the first character (CR) marks the on-time point of the data stream.
Time sync status character I is described below:
I = (space) when the Master Clock is synchronized to UTC
source.
= * when the Master Clock time is set manually.
= ? when the Master Clock has not achieved or has lost
synchronization to UTC source.
The time and date can be set to either local time or UTC time, depending upon the configuration
of the output port.
Page 6-12
Model 9183 Instruction Manual
6.8
Format 90:
Format 90 provides a position data stream in NMEA 0183 GPGGA GPS Fix data format.
The Format 90 data structure is shown below:
$GPGGA,HHMMSS.SS,ddmm.mmmm,n,dddmm.mmmm,e,Q,SS,YY.y,+AAAAA.a,M,,,,*CC
CR LF
where:
$GP =
GGA =
HHMMSS.SS =
ddmm.mmmm,n =
dd =
mm.mmmm =
n=
dddmm.mmmm,e =
ddd =
mm.mmmm =
e=
Q=
0=
1=
SS =
YY.Y =
+AAAAA.a,M =
,,,, =
cc =
CR =
LF =
GPS System Talker
GPS Fix Data Message
Latest time of Position Fix, UTC. This field is blank until a 3D fix
is acquired
Latitude
degress, 00...90
minutes, 00.0000....59.9999
direction, N = North, S = South
Longitude
degress, 000...180
minutes, 00.0000....59.9999
direction, E = East, W = West
Quality Indicator,
No 3D fix
3D fix
Number of satellites tracked, 0...8
Dilution of precision, 00.0...99.9
Antenna height in meters, referenced to mean sea level
Fields for geoidal separation and differential GPS not supported
Check sum message, HEX 00...7F
Check sum calculated by Xoring all bytes between $ and *.
Carriage Return
Line Feed
Example:
$GPGAA,151119.00,4307.0241,N,07729.2249,W,1,06,03.2,+00125.5,M,,,,*3F
The example data stream provides the following information:
Time of Position Fix:
15:11:19.00 UTC
Latitude:
43° 07.0241’ North
Longitude:
77° 29.2249’ West
Quality:
3D fix
Satellites Used:
6
Dilution of Precision:
3.2
Antenna Height:
+125.5 meters above sea level
Check Sum:
3
Model 9183 Instruction Manual
Page 6-13
Page 6-14
Model 9183 Instruction Manual
7
RS-232 SETUP PORT COMMANDS
From the rear panel RS-232 Serial Setup Interface Port, the user can manage files, configure
network settings for the product and configure the front panel displays and rear panel outputs.
Table 7-1 provides a listing of the command set in alphabetical order and the page where you can
find the description of the command. These commands may contain a set of subcommands that
that are used to configure individual attributes for that subsystem.
Command
fpd
frq
help
IRIG
Description
Configures the Front panel display (Applicable
only to units that have Option 2 installed- front
panel displays and two Serial output ports).
Configures the Signature Control for the
frequency outputs (Applicable only with units
that have Option 6 installed).
Help
Section
7.1
7.2
7.3
Configures the IRIG output (Applicable only to
units with an IRIG output installed)
Log in at a specified security level
Log out of the current security level
Configures up to five separate local clocks
Modem commands
Display list of commands
Turn averaging algorithm on or off.
Enable or disable debug logging.
View or reset the modem statistics.
Network configuration commands
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
net gateway
Enables/disables or set the default gateway
1.1
net help
Displays summaries of the network
subcommands
Sets the IP address
1.1
1.1
Displays the MAC address
Sets the subnet mask
Shows network parameter
Enable/disables http access to the unit
Enables options
Reboots the unit
Configures the Remote RS-485 output(s)
Security Commands
1.1
1.1
1.1
7.20
7.21
7.22
7.23
7.24
login
logout
ltc
mdo
mdo help
mdo avg
mdo log
mdo stat
net
net IP
Net mac
net mask
net show
net http
opt
reboot
rem
sec
Model 9183 Instruction Manual
7.4
Page 7-1
sec help
sec level
sec password
ser
update
App
boot
csl
kern
help
Displays summaries of the security
subcommands
Displays the current security level
Sets the password for the current security level
Configures the Serial port(s)
Firmware Update Commands
Updates the Application software
Updates the Boot Monitor
Updates the CSL
Updates the kernel
Displays summaries of the update
subcommands
1.1
7.26
1.1
7.28
7.29
1.1
7.29.2
7.29.3
7.29.4
1.1
Table 7-1: Alphabetical List of Commands
NOTE: The commands shown in this section are all in lower case format.
The NetClock accepts commands in upper or lower case formats.
Page 7-2
Model 9183 Instruction Manual
7.1
fpd
The command, fpd, displays the current configuration of the front panel LCD displays. The user
may specify a particular command or set of commands to display more detailed help
information. The fpd command is also used to change the configuration of the front panel
displays.
The fpd command requires the user level to be in either config or admin mode.
To list the available commands at the current security level, issue the help command as shown
below:
Type: fpd <enter>
Type: fpd help <enter>
Displays this information.
Type: fpd format [lcd] [format] <enter>
Selects the Display format for a specified LCD.
Where:lcd : LCD Display Number (0|1) (LCD 1 is the left display and
2 is the right display)
format : Desired LCD Display Format Description from choices
listed below.
none - No format displayed
product - Product powerup display
revision - Revision version display
timeview - Time View display
time - Time only display
doy - Day of Year display
date - Date only display
date_time - Date and Time display
doy_time - Day of Year and Time display
fpd date [format]<enter>
Selects date format for LCD Displays
format : Date Format selected from available choices below.
MM_DD_YY
DD_MM_YY
YY_MM_DD
MM_DD_YYYY
Model 9183 Instruction Manual
Page 7-3
DD_MM_YYYY
YYYY_MM_DD
Fpd time [0|1] [format] <enter>
Selects time format for LCD Displays.
Where: [0|1] : Desired LCD Number to configure
format : Date Format as a 12 or 24 hour display. Choices below.
12
24
fpd font [font]<enter>
Select time reference for LCD Displays
Where font : Font
led - Large Blocky LED Font
thin - Thinner Blocky LED Font
mark - Rounded large blocky LED Font
arial - Arial type font
fpd reset <enter>
Resets LCD Display state back to factory default.
fpd status <enter>
Displays LCD Display state and current selections.
fpd ltc [0|1] [index] <enter>
Sets selected LCD Display's Local Time Clock by index
fpd print lcd row col text <enter>
Prints text string on lcd at desired location
[0|1] : LCD Number
row : Y location
col : X location
text : string to print
Page 7-4
Model 9183 Instruction Manual
7.2
frq
The command, frq, displays the configuration of Signature Control for the frequency output(s).
Signature Control is used to disable the frequency output if an alarm or an out–of-sync condition
occurs. The frq command is also used to configure the desired Signature Control settings.
Type: frq sig [interface] [mode|status] [none|major|sync] <ent>
Where: interface
10MHz
mode
status
Set Signature Control Mode of operation
View Signature Control status
none
major
sync
No Signature Control enabled
Major Alarm will disable frequency output
Loss of time sync will disable frequency output
Model 9183 Instruction Manual
Page 7-5
7.3
help
The command, help, displays a summary of the available commands at the current security level.
The user may specify a particular command or set of commands to display more detailed help
information. The help command is intended for novice users. The novice user can use this
command to aid them learning the individual syntax for system commands.
The help command is available at the user security level.
To list the available commands at the current security level, issue the help command as shown
below:
Type:
help <ent>
Example Response:
help
Commander Help Function
dir
dir [path] - list current directory
pwd
pwd - print working directory
cd
cd [path] - change directory
delete
delete [file] - remove a file
type
type [file] - print the contents of a file
sec
sec <command> <arguments> - invoke security commands
login
login <account> <password> - access secure areas
logout
logout - exit secure areas
net
net <command> <arguments> - invoke network commands
To list the files and directories in the parent directory of the current working directory, issue the
dir command as follows:
Type:
Where:
help COMMAND <ent>
COMMAND = the command to obtain help on.
Example, The current working directory is /test and it contains a file named data.txt.
Follow the example below to display help about the net command.
Type:
Response:
Page 7-6
help net <ent>
the 'net' group of commands is used to access and
manage the network interface
Model 9183 Instruction Manual
7.4
IRIG
irig help <enter>
Display this information
irig disp <enter>
Display the current IRIG port settings.
irig b <AM|TTL> <enter>
Sets the irig output to format B
AM = amplitude modulated output
TTL = TTL compatible output
irig brb <enter>
Sets the irig output to format B Rubidium.
This option is only available on Rubidium units only.
irig e <AM <100|1000>|TTL> <enter>
Sets the irig output to format E
AM = Amplitude modulated output. AM can have 100 or 1000Hz
TTL = TTL compatible output
irig amp <level> <enter>
Sets the amplitude level for AM signals.
level = amplitude of signal. 0 to 255.
Refer to the IRIG section of the instruction manual.
irig ltc <clock> <enter>
Sets the reference clock for the IRIG output.
clock = reference clock index. 0 - UTC, 1-5 local clock
Use 'ltc disp' to see the available clocks
irig sig <none|sync> <enter>
Sets the signature control of the IRIG port.
none = no signature control
sync = synchonized signature control
Model 9183 Instruction Manual
Page 7-7
7.5
login
The command, login, is used to change the current security level. The user may specify the
security level and password after the command or fill them in when prompted. The login
command is intended for advanced users. The advanced user can use this command to log in to
the unit at either the config or admin level.
The login command is available at the user security level.
To log in to the unit at a different security level, issue the login command as shown below:
Type:
Response:
Type:
type)
Response:
Security Level is now:
Where:
login LEVEL<ent>
Password:
PASSWORD <ent> (the terminal will not show what you
Login Successful
LEVEL Level
LEVEL = the security level to log in as.
PASSWORD = the password for the specified security
level.
To log in to the unit at a different security level and be prompted for the level and password,
issue the login command as follows:
Type:
Response:
Type:
Response:
Type:
type)
Response:
Security Level is now:
Where:
login <enter>
Account:
LEVEL <enter>
Password:
PASSWORD <enter> (the terminal will not show what you
Login Successful
LEVEL Level
LEVEL = the security level to log in as.
PASSWORD = the password for the specified security
level.
Follow the example below to log in to the unit at the config security level.
Type:
Response:
Type
type)
Response:
Security Level is now:
Page 7-8
login config <enter>
Password:
PASSWORD<enter> (the terminal will not show what you
Login Successful
Config Level
Model 9183 Instruction Manual
7.6
logout
The command, logout, is used to change the current security level to the user level. The logout
command is intended for advanced users. The advanced user can use this command to restore the
security level back to the user level after they have completed any commands that required a
higher security level.
The logout command is available at the user security level.
To log out of the unit to the user security level, issue the logout command as shown below:
Type:
Response:
now at:
Model 9183 Instruction Manual
logout <enter>
Logout Successful
User Level
Page 7-9
7.7
ltc
The ltc command is used to create up to five Local clocks. Local clocks allow many of the
output ports to be able to provide time data as local time instead of just UTC time. This
command requires admin level login.
Usage:
ltc help <enter>
Display this information
ltc disp (index) <enter>
If no arguments are given, displays summary information of all clocks.
If an index is given, displays detailed information for that clock.
ltc create <name> <enter>
Creates a new local clock. Multiple consecutive spaces in the name
will be reduced to a single space.
Name = Desired name for the local clock.
ltc delete <index> <enter>
Deletes a local clock at the specified index.
ltc tz <index> <+/-XX:XX|auto> <enter>
Assigns a new Time Zone Offset for the local clock.
XX:XX = define the offset manually
auto = Use GPS to determine the offset.
ltc dst <index> <none|auto|region|bwd|bdm> <args> <enter>
Assigns a new Daylight Saving Time rule to the clock.
index = index of clock
none <enter> (no args) = No DST rule.
auto <enter> (no args) = Use GPS to determine the DST rule.
region <reg> <enter> = Set DST rule as defined by region.
1 - Europe
2 - North America
3 - Australia-1
4 - Australia-2
bwd IN <W> <DDD> <MMM> <HH:MM> <hh:mm> OUT <W> <DDD> <MMM>
<HH:MM> <enter>
Defines DST rule by week of month and day of week.
Page 7-10
Model 9183 Instruction Manual
W = Week of month; 1, 2, 3, 4, L (Last)
DDD = Day of week; MON, TUE, WED, THU, FRI, SAT, SUN
MMM = Month; JAN, FEB, MAR, APR, MAY, JUN,
JUL, AUG, SEP, OCT, NOV, DEC
HH:MM = Time change; hours:minutes 00:00-23:59 local time
hh:mm = Amount of change; hours:minute 00:00-23:59
bdm IN <MM> <DD> <HH:MM> <hh:mm> OUT <MM> <DD> <HH:MM> <enter>
Defines DST rule by date.
MM = Month; 01-12
DD = Day of month; 01-31
HH:MM = Time change; hours:minutes 00:00-23:59 local time
hh:mm = Amount of change; hours:minute 00:00-23:59
Model 9183 Instruction Manual
Page 7-11
7.8
mdo
The mdo command is used to configure the dial-out modem option if it is installed. The mdo
command consists of a set of subcommands that are used to control logs and configurations of
the modem features.
7.9
mdo help <enter>
Display list of commands
7.10
mdo avg <on|off> <#|auto> <enter>
Turn averaging algorithm on or off.
If averaging is turned on then the number of points to average needs to be specified.
If the number of points is specified as auto then the unit will choose the best number.
If no parameter is specified then the current state will be printed. The system defaults to
auto.
Example: mdo avg on auto
7.11
mdo log <normal|debug> <enter>
Enable or disable debug logging.
When debug logging is enabled, a log is created for each call in a set of call attempts. This
log contains every message the modem received. The log is stored in the logs folder with the
name “call#.log” where # is the number of the call in the set. The system defaults to normal.
The system defaults to normal upon reboot.
Example mdo log debug
7.12
mdo stat [reset] <enter>
View or reset the modem statistics.
If no argument is specified the statistics are printed to the console.
If the reset argument is used the statistics are reset
Example: mdo stat
The system resets all stats on boot
Page 7-12
Model 9183 Instruction Manual
7.13
net
The command, net, is used to configure the network interface. The net command consists of a
set of subcommands that are used to get, set or change each individual network setting. Some of
the network settings require config level security in order to set or change them.
To invoke one of the net subcommands, issue the net command as shown below:
Type:
Where:
net SUBCOMMAND [ARGUMENTS] <ent>
SUBCOMMAND = The subcommand to invoke.
ARGUMENTS =
The arguments required for the specified
subcommand.
To display a list of the available subcommands for the net command along with a summary
description of each, issue the net command as follows:
Type:
net <ent>
Response:
use the 'net help' command to see a list of net commands
use the 'net help <sub-command>' to get detailed help about that command
help
mask
ip
show
default
gateway
mac
http
net help - list of net commands
net mask mmm.mmm.mmm.mmm - set new network mask
net ip nnn.nnn.nnn.nnn - set new ip address
net show - display network configuration to the user
net default - set all net parameters back to default values
net gateway [yes,no] [address] – enable gateway
net mac [xx:xx:xx:xx:xx:xx] - get or set MAC address
net http [yes,no] – enable or disable http access to the unit
The following are the set of subcommands for the net command:
Model 9183 Instruction Manual
Page 7-13
7.14
net gateway
The net subcommand, gateway, is used to display, enable/disable, and/or set the IP address of the
default gateway. The gateway subcommand is intended for advanced users. The advanced user
can use this command to configure the address of the router that will be used as the default
gateway for sending information beyond the local area network (LAN).
The gateway subcommand is available at the user security level to display the current setting.
The gateway subcommand is available at the config security level to set a new value.
To display the current gateway setting, issue the gateway subcommand as shown below:
Type:
Response:
Gateway IP:
Where:
net gateway <ent>
Network default gateway STATUS
GATEWAY_ADDRESS
STATUS =enabled or disabled.
GATEWAY_ADDRESS =The IP address of the gateway.
To enable or disable the gateway, issue the gateway subcommand as shown below:
Type:
Response:
Type
type)
Response:
Security Level is now:
Where:
Type:
Response:
Where:
login config <ent>
Password:
PASSWORD <ent> (the terminal will not show what you
Login Successful
Config Level
PASSWORD = The password for config security level.
net gateway ENABLE <ent>
SETTING default gateway: GATEWAY_ADDRESS
Gateway command successful
ENABLE = yes or no.
SETTING = Enabling or Disabling.
GATEWAY_ADDRESS = The IP address of the gateway.
To enable the gateway and set the gateway IP address, issue the gateway subcommand as shown
below:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Page 7-14
login config <ent>
Password:
PASSWORD <ent> (the terminal will not show what you
type)
Login Successful
Config Level
PASSWORD = The password for config security level.
net gateway yes GATEWAY_ADDRESS <ent>
Enabling default gateway: GATEWAY_ADDRESS
Model 9183 Instruction Manual
Where:
Gateway command successful
GATEWAY_ADDRESS = The IP address of the gateway.
Follow the example below to enable a gateway with IP address 192.168.0.200.
Type:
Response:
Type
Response:
Security Level is now:
Type:
Response:
login config <ent>
Password:
config12 <ent> (the terminal will not show what you type)
Login Successful
Config Level
net gateway yes 192.168.0.200 <ent>
Enabling default gateway: 192.168.0.200
Gateway command successful
NOTE: Attempting to enable or set a gateway with an invalid IP address or an IP address that is
not on the same subnet will result in an error. Be sure the desired gateway exists and is
reachable on the LAN before setting/enabling it with the net gateway subcommand.
Model 9183 Instruction Manual
Page 7-15
7.15
net help
The net subcommand, help, is used to display a list of the available subcommands and a brief
usage summary for each of them. The help subcommand is intended for novice users. The
novice user can use this command to aid them learning the individual syntax for net
subcommands.
The help subcommand is available at the user security level.
To display a list of the available subcommands and brief usage of each, issue the help
subcommand as shown below:
Type:
Response:
help
mask
ip
show
default
gateway
mac
Page 7-16
net help <ent>
net help - list of net commands
net mask mmm.mmm.mmm.mmm - set new network mask
net ip nnn.nnn.nnn.nnn - set new ip address
net show - display network configuration to the user
net default - set all net parameters back to default values
net gateway [yes,no] [address] – enable gateway
net mac [xx:xx:xx:xx:xx:xx] - get or set MAC address
Model 9183 Instruction Manual
7.16
net ip
The net subcommand, ip, is used to set the IP address for the unit. The ip subcommand is
intended for advanced users. The advanced user can use this command to statically configure the
IP address of the unit so that it may be accessed via the network.
The ip subcommand is available at the config security level to set a new value.
To set the IP address for the unit, issue the ip subcommand as shown below:
Type:
Response:
Type
type)
Response:
Security Level is now:
Where:
Type:
Response:
Stack IP address:
Where:
login config <ent>
Password:
PASSWORD <ent> (the terminal will not show what you
Login Successful
Config Level
PASSWORD = The password for config security level.
net ip IP_ADDRESS <ent>
Setting new address: IP_ADDRESS
IP_ADDRESS
New IP address set
IP_ADDRESS =The IP address for the unit.
Follow the example below to set the unit to have an IP address of 192.168.0.100.
Type:
Response:
Type
Response:
Security Level is now:
Type:
Response:
Stack IP address:
login config <ent>
Password:
config12 <ent> (the terminal will not show what you type)
Login Successful
Config Level
net ip 192.168.0.100 <ent>
Setting new address: 192.168.0.100
192.168.0.100
New IP address set
NOTE: The Stack IP address reflects the value that the TCP/IP stack is set
to. This should match the IP address being set.
Model 9183 Instruction Manual
Page 7-17
7.17
net mac
The net subcommand, mac, is used to display the Ethernet MAC address for the unit. The mac
subcommand is intended for advanced users. The advanced user can use this command to
retrieve the Ethernet MAC address of the unit for uses such as network traffic monitoring.
The mac subcommand is available at the user security level to get the value.
To get the Ethernet MAC address for the unit, issue the mac subcommand as shown below:
Type:
Response:
Where:
the unit.
net mac <ent>
MAC address: XX;XX;XX;XX;XX;XX
XX;XX;XX;XX;XX;XX = The Ethernet MAC address for
Note: The MAC address of the NetClock is configured at the factory and cannot be changed.
Page 7-18
Model 9183 Instruction Manual
7.18
net mask
The net subcommand, mask, is used to set the subnet mask for the unit. The mask subcommand
is intended for advanced users. The advanced user can use this command to configure the subnet
mask of the unit so that it may be accessed via the network.
The mask subcommand is available at the config security level to set a new value.
To set the IP address for the unit, issue the mask subcommand as shown below:
Type:
Response:
Type
type)
Response:
Security Level is now:
Where:
Type:
Response:
Stack netmask:
Where:
login config <ent>
Password:
PASSWORD <ent> (the terminal will not show what you
Login Successful
Config Level
PASSWORD = The password for config security level.
net mask NETMASK <ent>
Setting new netmask: NETMASK
NETMASK
New netmask has been set
NETMASK =The subnet mask for the unit.
Follow the example below to set the unit to have an IP address of 255.255.0.0.
Type:
Response:
Type
Response:
Security Level is now:
Type:
Response:
Stack netmask:
login config <ent>
Password:
config12 <ent> (the terminal will not show what you type)
Login Successful
Config Level
net mask 255.255.0.0 <ent>
Setting new netmask: 255.255.0.0
255.255.0.0
New netmask Has been set
NOTE: The Stack netmask reflects the value that the TCP/IP stack is set to.
This should match the netmask value being set.
Model 9183 Instruction Manual
Page 7-19
7.19
net show
The net subcommand, show, is used to display a list of the available subcommands and a brief
usage summary for each of them. The show subcommand is intended for novice users. The
novice user can use this command to aid them learning the individual syntax for net
subcommands.
The show subcommand is available at the user security level.
To display a list of the current network parameters, issue the show subcommand as shown
below:
Type:
Response:
IP address:
Netmask address:
Network gateway:
Gateway IP:
MAC address:
Where:
net show <ent>
Network Configuration
IP_ADDRESS
NETMASK
STATUS
GATEWAY_ADDRESS
XX:XX:XX:XX:XX:XX
IP_ADDRESS =The IP address for the unit.
NETMASK =The subnet mask for the unit.
STATUS =enabled or disabled.
GATEWAY_ADDRESS =The IP address for the default
gateway.
XX:XX:XX:XX:XX:XX =The Ethernet MAC address for
the unit.
The example below displays the network settings for an example unit
Type:
Response:
IP address:
Netmask address:
Network gateway:
Gateway IP:
MAC address:
7.20
net show <ent>
Network Configuration
10.10.200.104
255.255.0.0
enabled
10.10.200.201
00:0c:ec:00:01:cc
net http
The net subcommand, http, is used to enable or disable the HTTP protocol.
The http subcommand is available at the administrator security level only.
To display the current http setting, issue the http subcommand as shown below:
Page 7-20
Model 9183 Instruction Manual
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
login admin <ent>
Password:
password <ent> (the terminal will not show what you type)
Login Successful
Admin Level
PASSWORD = The password for admin security level.
net http <ent>
Network HTTP status
where status = enable or disabled
To disable HTTP issue the following command:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
login admin <ent>
Password:
password <ent> (the terminal will not show what you type)
Login Successful
Admin Level
PASSWORD = The password for admin security level.
net http no <ent>
HTTP Disabled
To enable HTTP issue the following command:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Model 9183 Instruction Manual
login admin <ent>
Password:
password <ent> (the terminal will not show what you type)
Login Successful
Admin Level
PASSWORD = The password for admin security level.
net http yes <ent>
HTTP Enabled
Page 7-21
7.21
opt
For admin and config levels, options can be shown or enabled by a hash.
help
option help - list of options commands
display option display - used to display current options
enable
option enable [option] [Hash In] - enables options using MD5
>opt disp
Executable: 91XX
(0x00a5)
Product: 9189
(0x0002) EEPROM (0x0002)
Product Name: 9189
Options: (0x180107ff)
EEPROM (0x180107ff)
Options State: INVALID
Security:
ON
Modem:
ON
Serial Port 1:
ON
Remote Port 1:
ON
Serial Port 2:
ON
Remote Port 2:
ON
IRIG Output:
ON
Front Panel:
ON
Relays:
ON
Oscillator Disciplining: ON
10 MHz Frequency Output: ON
Serial Time Code Input: OFF
SNTP Server:
ON
Oscillator Type:
TCXO
GPS Receiver:
Motorola M12T
Board:
NONE
Page 7-22
Model 9183 Instruction Manual
7.22
reboot [bootloader]
The reboot is used to warm-boot the unit without having to disconnect or reconnect the power
supply. The reboot command is intended only for administrators, and is available at the admin
security level. The available bootloader argument is used to reboot into the bootloader for
software upgrade; which cannot be performed from the application.
To reboot the unit, login as administrator, then issue the reboot command as shown here:
Type:
Response:
Type
type)
Response:
Security Level is now:
Where:
Type:
Response:
login admin <ent>
Password:
PASSWORD <ent> (the terminal will not show what you
Login Successful
Admin Level
PASSWORD = The password for admin security level.
reboot <ent>
Rebooting...
NOTE: This command provides a convenient way to remotely update application software in
that the unit will automatically execute the most recent image in /sys/bin/.
CAUTION: Do not reboot the unit while file uploads are in progress. Do not reboot the unit
with non-application images are located in /sys/bin/. If either of these conditions is not fulfilled,
the unit may fail to boot the application image, which could result in a unit that function
incorrectly or not at all.
Model 9183 Instruction Manual
Page 7-23
7.23
rem
The rem command allows the rear panel Remote output(s) to be configured from the console
port. This command requires config level or higher login to modify.
Usage:
rem help <enter>
Display this information
rem disp <X> <enter>
Display the current remote serial port settings.
X = serial port number; 1, 2
rem baud <X> <baud> <enter>
Sets the baud rate of a remote serial port
X = serial port number; 1, 2
baud = baud rate; 1200, 2400, 4800, 9600
rem fmt <X> <fmt> <enter>
Sets the output format of a remote serial port
X = serial port number; 1, 2
fmt = format type; 01, 02, etc.
rem ltc <X> <ltc> <enter>
Sets the output format of a remote serial port
X = serial port number; 1, 2
ltc = clock setting; 0 - UTC, 1-5 local clock
rem all <port> <baud> <format> <clock> <enter>
Configure all settings of the remote serial port
port : The remote serial port to configure (1 or 2)
baud : Baud rate; 1200, 2400, 4800, 9600
format: Format of output
00, 01, 02, 03, 04, 06, 07, 08, 90
clock : Reference clock. 0 - UTC, 1-5 local clocks
Page 7-24
Model 9183 Instruction Manual
7.24
sec
The command sec is used to configure the security feature. The sec command consists of a set of
subcommands that are used to get, set or change each individual security feature setting. Some
of the sec settings require config level security or admin level in order to set or change them.
To invoke one of the sec subcommands, issue the sec command as shown below:
Type:
sec SUBCOMMAND [ARGUMENTS] <ent>
Where:
SUBCOMMAND = the subcommand to invoke.
ARGUMENTS = the arguments required for the specified subcommand.
To display a list of the available subcommands for the sec command along with a summary
description of each, issue the sec command. Based on the security level you are in, the response
will be different. We list them all in the following.
Type: sec <ent>
1. If you are in user level
Response:
level
sec level - show the current security level
help
sec help - list of sec sub-commands and detailed information on each
2. Under config level
Response:
level
sec level - show the current security level
help
sec help - list of sec sub-commands and detailed information on each
3. Under admin level
Response:
account sec account <Account-Name> <new-name>
level sec level - show the current security level
password sec password <Account-Name>
help sec help - list of sec sub-commands and detailed information on each
The following are the set of subcommands for the sec command:
Model 9183 Instruction Manual
Page 7-25
7.25
sec help
The sec subcommand help is used to list of sec sub-commands and detailed information on each.
The help subcommand is available at the any security level. You will get different result based
on the security level you are in now.
To get a list of sec sub-commands and detailed information on, issue the help subcommand as
shown below:
1. Under user mode
Type:
Response:
Security Level is now:
sec help <ent>
Login Successful
Config Level
2. Under config mode
Type:
login config <ent>
Response:
Password:
Type
config12 <ent> (the terminal will not show what you type)
Response:
Login Successful
Security Level is now:
Config Level
Type:
sec help <ent>
Response:
level
sec level - show the current security level
help
sec help - list of sec sub-commands and detailed information on each
3. Under admin mode
Type:
login admin <ent>
Response:
Password:
Type
admin123 <ent> (the terminal will not show what you type)
Response:
Login Successful
Security Level is now:
Admin Level
Type:
sec help <ent>
Response:
account
sec account <Account-Name> <new-name>
level
sec level - show the current security level
password
sec password <Account-Name>
help
sec help - list of sec sub-commands and detailed information on each
Page 7-26
Model 9183 Instruction Manual
7.26
sec level
The sec subcommand, level is used to show the current security level.
The level subcommand is available at the user security level.
To show the current security level, issue the level subcommand as shown below:
Type:
Response:
Model 9183 Instruction Manual
sec level <ent>
Security Level is: User Level
Page 7-27
7.27
sec password
The sec subcommand password is used to set an account name. The password subcommand is
only available at the admin security level.
To set the account under admin mode, issue the password subcommand as shown below:
Type:
Response:
Type
Response:
Security Level is now:
Type:
Response:
Type:
Response:
Type:
Response:
Type:
Response:
Type:
Response:
Page 7-28
login admin <ent>
Password:
admin123 <ent> (the terminal will not show what you type)
Login Successful
Admin Level
sec password <ent>
Account:
[current account name] <ent>
Old Password:
[current password for this account] <ent>
New Password:
[New password for this account] <ent>
New Password (again):
[New password for this account] <ent>
New Password set
Model 9183 Instruction Manual
7.28
ser
The ser command allows the rear panel Serial ports to be configured from the console. They
require config level or higher login.
Usage:
ser help <enter>
Display this information
ser disp <X> <enter>
Display the current serial port settings.
X = serial port number; 1, 2
ser baud <X> <baud> <enter>
Sets the baud rate of a serial port
X = serial port number; 1, 2
baud = baud rate; 1200, 2400, 4800, 9600
ser fmt <X> <fmt> <enter>
Sets the output format of a serial port
X = serial port number; 1, 2
fmt = format type; 01, 02, etc.
ser ltc <X> <ltc> <enter>
Sets the output format of a serial port
X = serial port number; 1, 2
ltc = clock setting; 0 - UTC, 1-5 local clock
ser req <X> <req> <enter>
Sets the output format of a serial port
X = serial port number; 1, 2
req = request character. Use 'none' for multicast
ser all <port> <baud> <format> <req> <clock> <enter>
Configure all settings of the serial port
port: The serial port to configure
baud: Baud rate; 1200, 2400, 4800, 9600
format: Format of output
00, 01, 02, 03, 04, 06, 07, 08, 90
req: Request character. Use none for multicast
clock: Reference clock. 0 - UTC, 1-5 local clocks
Model 9183 Instruction Manual
Page 7-29
7.29
update
The command, update, is used to install a new bootloader into the unit. The update command
consists of a set of subcommands that are used to update each portion that can be modified.
Since correct installation of the bootloader is critical to operation, this entire menu requires
admin level security in order to use them.
To invoke one of the update subcommands, issue the update command as shown below:
Type:
update SUBCOMMAND [ARGUMENTS] <ent>
Where:
SUBCOMMAND = The subcommand to invoke.
ARGUMENTS = The arguments required for the specified subcommand.
To display a list of the available subcommands for the update command along with a summary
description of each, issue the update command as follows:
Type: update <ent>
Response:
help
update help - list each subcommand and its description
csl
update csl <filename> - install a new CSL image
boot
update boot <filename> - install a new bootload image
app
update app <filename> - install a new application
kern
update kern <filename> - install a new kernel
The following are the set of subcommands for the update command:
Page 7-30
Model 9183 Instruction Manual
7.29.1 update app
The update subcommand, app, is used to update the application image for the unit. The app
subcommand is intended only for advanced users that have been provided with an updated
application image.
The app subcommand is only available at the admin security level.
To install a new CSL image into the unit, upload the image to the unit's /update directory via
FTP or secure copy. Then issue the update app command as shown here:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Where:
login admin <ent>
Password:
PASSWORD<ent>
Login Successful
Admin Level
PASSWORD = the password for admin security level.
update app APPFILE <ent>
App image installed successfully.
APPFILE = the name of the application image.
CAUTION: Do not power down or reboot the unit while running this command. Do not install
files that are not application images. If a non-application image is installed it can be overwritten
by re-updating with a correct application image. The unit will operate incorrectly or completely
fail to run if this command is not used with care.
Model 9183 Instruction Manual
Page 7-31
7.29.2 update boot
The update subcommand, boot, is used to update the bootloader image for the unit. The boot
subcommand is intended only for advanced users that have been provided with an updated
bootloader image.
The boot subcommand is only available at the admin security level.
To install a new bootloader image into the unit, upload the image to the unit's /update directory
via FTP or secure copy. Then issue the update boot command as shown here:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Where:
login admin <ent>
Password:
PASSWORD<ent>
Login Successful
Admin Level
PASSWORD = the password for admin security level.
update boot BOOTFILE <ent>
Boot image installed successfully.
BOOTFILE = the name of the Boot image.
CAUTION: Do not power down or reboot the unit while running this command. Do not install
files that are not bootloader images. If a non-bootloader image is installed it can be overwritten
by re-updating with a correct bootloader image. The unit will operate incorrectly or completely
fail to run if this command is not used with care.
Page 7-32
Model 9183 Instruction Manual
7.29.3 update csl
The update subcommand, csl, is used to update the CSL image for the unit. The csl
subcommand is intended only for advanced users that have been provided with an updated CSL
image.
The csl subcommand is only available at the admin security level.
To install a new CSL image into the unit, upload the image to the unit's /update directory via
FTP. Then issue the update csl command as shown here:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Where:
login admin <ent>
Password:
PASSWORD<ent>
Login Successful
Admin Level
PASSWORD = the password for admin security level.
update csl CSLFILE <ent>
CSL image installed successfully.
CSLFILE = the name of the CSL image.
CAUTION: Do not power down or reboot the unit while running this command. Do not install
files that are not CSL images. If a non-CSL image is installed it can be overwritten by reupdating with a correct CSL image. The unit will operate incorrectly or completely fail to run
if this command is not used with care.
Model 9183 Instruction Manual
Page 7-33
7.29.4 update kern
The update subcommand, kern, is used to update the kernel image for the unit. The kernel
subcommand is intended only for advanced users that have been provided with an updated kernel
image.
The kern subcommand is only available at the admin security level.
To install a new kernel image into the unit, upload the image to the unit's /update directory via
FTP. Then issue the update kern command as shown here:
Type:
Response:
Type
Response:
Security Level is now:
Where:
Type:
Response:
Where:
login admin <ent>
Password:
PASSWORD<ent>
Login Successful
Admin Level
PASSWORD = the password for admin security level.
update kern KERNFILE <ent>
Kernel image installed successfully.
KERNFILE = the name of the CSL image.
CAUTION: Do not power down or reboot the unit while running this command. Do not install
files that are not kernel images. If a non-kernel image is installed it can be overwritten by reupdating with a correct kernel image. The unit will operate incorrectly or completely fail to run
if this command is not used with care.
Page 7-34
Model 9183 Instruction Manual
7.29.5 update help
The update subcommand, help, is used to display a list of the available subcommands and a brief
usage summary for each of them. The help subcommand is intended for novice users. The
novice user can use this command to aid them learning the individual syntax for update
subcommands.
The help subcommand is available at the admin security level.
To display a list of the available subcommands and brief usage of each, issue the help
subcommand as shown below:
Type: update help <ent>
Response:
help
update help - list each subcommand and its description
csl
update csl <filename> - install a new CSL image
boot
update boot <filename> - install a new bootload image
app
update app <filename> - install a new application
kern
update kern <filename> - install a new kernel
Model 9183 Instruction Manual
Page 7-35
Page 7-36
Model 9183 Instruction Manual
8 Options
Spectracom offers several options for the Model 9183. The following section provides
descriptions and details on configuration of these available options.
Some of the options listed below can be purchased and installed with the NetClock still in the
field, while other options must be purchased with the unit at the time of the initial purchase. The
following table provides the standard configurations for the Model 9183 and the options that may
be purchased and installed in the field.
Available Model 9183 Option Combinations
Model 9183 Capable of
Refer to
Feature/Option
being
manual
purchased
Section
after the
initial
equipment
purchase
Security
Std.
N/A
Section 3.14
Front panel display + (2) additional serial
Std.
N/A
Sections 2.6
ports
and 3.5
Dial-Out Modem
Opt 3
Yes
Section 8.1
Rb (Rubidium) Oscillator *
Opt 4
No
Section 8.2
OCXO Oscillator *
Opt 5
No
Section 8.3
Std. = Standard feature. Opt X = Option number X. NA = Not Available.
*Can choose one, cannot choose both oscillators.
Please contact our Sales department for information regarding any of the options that are not
currently installed in your NetClock that you may be interested in obtaining.
8.1
8.1.1
Option 3: Modem
Option 3 basics
Option 3 provides the NetClock with the capability to use a modem to dial-out via an analog
phone line for time retrieval if GPS reception is either lost or cannot be obtained due to site
limitations. The modem can be configured in the software as either the primary external time
reference or it can also be configured as a Secondary/Backup reference in case the primary
reference is lost.
The modem interfaces to the NetClock via the Serial Setup Interface located on the rear of the
NetClock. This dual-function port provides the capability to initially configure the network
settings and is also the interface for the modem.
If not initially purchased with the unit, Option 3 can be enabled (turned on) in the field. Please
contact our Sales department to purchase this option. You will be sent a Hash key that can be
Model 9183 Instruction Manual
Page 8-1
entered in the NetClock to enable the security algorithms. The purchase of the option includes a
Spectracom supplied compatible modem.
Note: The modem MUST be Hayes AT compatible and configured for this mode of operation to
operate correctly with the unit. The Spectracom supplied modem is Hayes AT compatible.
8.1.2
Modem installation
The cable needed to connect the modem to the NetClock is a DB9 male to DB25 male null
modem serial cable. This should come with the modem package.
1. Connect the null modem converter that comes with the serial cable to the DB9 end of the
cable.
2. Connect the DB25 side of the null modem converter to the modem and the modified DB9
side to the Serial Setup port located on the rear of the NetClock.
3. Connect the CAT2 telephone cable from the analog phone line to the modem.
4. Connect the modem power adapter to a power outlet.
8.1.3
Modem Dial-Out Setup
Using the web browser user interface to configure dial-out modem feature:
The modem dial-out feature is used as either a Secondary/Backup time reference when all other
external time references become unavailable or can also be used as a primary reference if an
external reference is not available for use (Such as the inability to receive GPS at a particular
location). The Modem dial-out Configure web page provides options to configure the operation
of the dial-out modem feature. Login to either the configuration or administrator-level mode if
changes are desired. All fields will display the current system settings. The Modem dial-out
configuration screens are accessed from the "System Setup" page on the bottom frame, and then
select the “Modem Dial Out” from the left frame.
There are four different types of modem dial-out calls that can be made. The call type is
determined by the state of the system (after the call is finished) as well as user input. Calibration
calls happen upon a user request. Time verification calls happen on a user specified interval if
holdover is entered from time sync with another source. Time sync calls happen when time sync
is lost and on a user specified interval until another time source is available. Modem test calls
happen when no calls have been made for a user specified time, or upon a user request. Because
the modem determines how to use a call after the call is finished it is possible to start a call as a
certain call type and actually use it as another call type. Here is a description of each of the four
possible call types.
Page 8-2
Model 9183 Instruction Manual
8.1.4
Calibration Call
Calibration calls are done to characterize the call latency. A user specified number of calls will
be made over the calibration period and the average latency will be used to adjust all future calls.
The calibration will only be done at the user’s request and may be started only while in sync
from another time source. Calibration calls may be continued into holdover, but will be cut off if
the unit goes out of sync at any point during the calibration period.
8.1.5
Time Verification Call
Time verification calls are made to verify the unit still has acceptable time and to correct for any
leap seconds that may be asserted while the reference is not available. Calls will be made on a
user specified time table. If the call interval is more than a month leap seconds may be missed.
If a leap second is to be inserted at the end of the month then the clock will be scheduled to do
so. If the time is off by more than half a second then the unit will be immediately put into
unsynchronized mode (Time sync lamp will extinguish and time outputs will be ignored).
8.1.6
Time Sync Call
Time sync calls are done to set the second and sub second timers and to check for any leap
seconds. If a call is successful the timer will be set and the unit will be put in holdover mode
with the holdover timer reset. In addition if a leap second is to be inserted at the end of the
month then the clock will be scheduled to do so. Time sync calls will be made once the unit has
gone into unsynchronized mode until it obtains sync from another time source. During this
period, calls will be made on a user specified timetable or any time the unit goes out of sync.
8.1.7
Modem Test Call
Test calls are calls that make sure the modem is working. The modem will call out and check for
valid time messages. The unit will log “test passed” if it was able to get good time messages or
failed if it was not. No changes will be made to the system time. Testing can be done only in
sync from another time source and can either be on a specified interval or as requested.
Model 9183 Instruction Manual
Page 8-3
8.1.8
Modem Dial-Out CONFIGURE page
Figure 8-1: Modem Dial-Out CONFIGURE Screen
Serial Setup Port Mode:
The modem is connected to the Serial Setup port for normal operation. On the Modem
Configure page is a pull-down menu to select the mode that the Serial Setup Port will operate in.
Two options are available:
Console Mode: In this mode, Serial Setup port can be connected with a serial cable to a
computer with a serial terminal program running. The serial setup software commands can then
be used to interface with the unit. The modem operation will not be available while selected to
this mode.
Modem Mode: In this mode, the Serial Setup port can be connected to a modem for dialing out.
The Serial Setup port will be unavailable for network configuration while in this mode.
Important Note: The unit must be rebooted to apply the changes made to the serial setup port
mode.
Page 8-4
Model 9183 Instruction Manual
Modem as Primary/Secondary time source
The modem can be configured as either the primary reference or a secondary/back-up mode of
operation. This selection is configured on the Modem dial-out Configure page. In the
Secondary/Back-up mode of operation, all GPS antenna problem alarms (Indicating a short or
open in the antenna cable) and SNMP traps associated with the GPS reference input will be fully
enabled. When the modem Primary mode of operation is selected, the antenna problem alarm
and associated SNMP traps for the antenna will not be generated. No indication of a problem
with the GPS cable will be present or available. The Modem mode of operation does not affect
the ability to receive GPS.
Note: If the unit initially operated without a GPS reference and primary mode of operation was
selected, then at a later time a GPS antenna is connected, the mode of operation should be
changed to secondary mode to enable the GPS antenna problem alarms to aide in
troubleshooting.
Dialout now:
(Only available in Modem Mode and only when the unit is not in time sync).
Checking this box and clicking submit will prompt the dial out modem software to attempt an
immediate dial out procedure with the current settings if the unit is currently out of sync. When a
unit is configured in modem mode while it is in time sync, the “Dialout now” checkbox will be
greyed-out (disabled).
Modem speaker: Toggles the modem speaker on or off during dial out.
Model 9183 Instruction Manual
Page 8-5
8.1.9
Modem Dial-out DIALOUT page
Figure 8-2: Modem Dial-Out DIALOUT Configure Screen
Page 8-6
Model 9183 Instruction Manual
The model dial-out DIALOUT page is used to annotate the phone number used to obtain the time
from and to determine how often the modem will be used to retrieve the current time.
Phone Numbers:
Prefix: The phone prefix is a number(s) that need to be dialed to reach an outside line.
Predefined: Stores two predefined number NIST-Colorado and NIST-Hawaii. These are the
phone numbers to the National Institute of Standards and Technology modem time service.
Specified Number: This field will take any phone number that the user would like to use to dial
out to obtain time.
Try Calling: This field specifies how many times the dial out modem software will try to
connect to the selected phone number. Setting this field’s value to 0 will generate a warning
because it will prevent any dial out to be made in any condition, effectively disabling the modem
dial out feature.
Call Interval:
The call interval is used to manually configure how often the modem should dial-out for Time
verification calls when the unit is in the holdover mode and Time Sync is normally derived from
GPS (Secondary/Backup mode of operation) or Time Sync calls when the modem is selected as
the primary mode of operation.
To prevent a leap second occurrence from being missed and a one second error being inserted
into the NetClock, we recommend the Time Verification calls be placed less than once-permonth. Setting the Time Verification call period to longer than once-per-month can result in a
one second error from the time a leap second is asserted by NIST until the next Time
Verification/Time Sync call is placed.
To help prevent a loss of Time Sync condition from occurring, the call interval should be
configured for a value of less than the holdover period. This will prevent the holdover period
from expiring (which will cause loss of Time Sync) because the modem was configured to dialout after the holdover expired. For example, if the holdover period is set for two weeks, the call
interval should be set to dial-out less than every two weeks. Otherwise, holdover will expire
before the modem is scheduled for a dial-out and Time Sync will be lost.
Boot dial-out:
This field specifies how long the modem software will wait after being powered up to check the
unit’s time sync status. If this time expires and the unit has not achieved time sync yet, the
modem software will automatically dial out with the current settings at that time. Note that
changes to this timer’s settings will not change the timeout of the current countdown if it has
already begun (e.g. If the timer is set to 1 hour and then rebooted, the unit will countdown to 1
hour at power up. Changing the timer’s settings to 30 minutes will not affect the current
countdown. The new 30 minutes value will only be used if another power cycle occurred). If
want to skip the initial countdown, you can always use the Dialout Now feature.
Model 9183 Instruction Manual
Page 8-7
If the modem is the primary mode of operation for Time sync, the boot dial-out value should be
set for a very short duration as the unit will not be able to achieve time sync without the modem
placing a call. If the modem is strictly a backup to the external reference, this period can be
lengthened to longer than the typical amount of time needed to synchronize to the external
reference.
8.1.10 Modem Dial-out CALIBRATE page
Figure 8-3: Modem Dial-Out CALIBRATE Screen
Page 8-8
Model 9183 Instruction Manual
The Modem dial-out calibrate screen is used to calibrate the modem for increased accuracy of
the dial-out calls. The calibration procedure is not required but may be used to provide greater
accuracy of future modem calls. The calibration process, using several dial-out helps
compensate for inherit internal software processing lags as well as phone network delays as well.
Different locations may experience different latencies as well as time of day latencies may also
vary.
The calibrate mode allows the user to define the typical latency for the geographic location as
well as the time of day the modem is most likely to be used for time sync (such as for primary
mode of operation).
Calibrate Status:
The status of calibration is displayed at the top of the screen. If the calibration has been made
then the unit will say “calibrated”. If the latency has not been set or has been manually set, then
the unit will say “not calibrated”. If the unit is currently calibrating then the number of
successful calls will be displayed here.
Calibrate Now:
Calibrate now is based on the current settings. This will calculate the call latency and adjust all
future calls based on this value. The call latency is based primarily on the phone system.
Therefore, this should be done when the unit is first set up and does not need to be done again
unless it is connected to a different phone system.
Reset Latency Value:
This resets the latency value to the factory default. This can be done if the unit was accidentally
set.
Latency Value/Manually Set Latency:
This box displays the current latency value. If the “manually set latency” box is checked then
this can be edited to set the current latency.
Number of Calibration calls:
This is the number of calibration calls to be made before the modem is declared as calibrated.
The accuracy of the latency calculation depends directly on this number. The more calls that are
made, the more accurate the calculation will be. This should not be lowered from the default, but
it may be safely raised.
Calibration Call Interval:
This is the interval between calibration calls. This value, along with the number of calibration
calls, will determine how long the calibration process will take.
Model 9183 Instruction Manual
Page 8-9
8.1.11 Modem Dial-out TEST page
Figure 8-4: Modem Dial-Out TEST Screen
Page 8-10
Model 9183 Instruction Manual
Test Now:
Tests the modem to make sure it can correctly dial-out. This may only be done while in time
sync from another source such as GPS. To test in other states, use the dial now button. The
result of this test will be written to the log file.
Test On Interval:
Enables the modem test interval. If the unit has not made another type of call during this interval
then a test call will be made.
Test Interval:
Sets the modem test interval. In order to set these values, the “Test On Interval” box must be
checked. If the interval expires before another type of call is made then a modem test call will be
made. To schedule a call when not in sync from another time source, use the “Call Interval”
setting in the Dialout Settings page.
Example 1: To configure the modem dial out to:
Wait 30 minutes before checking time sync status at power up
Dial to NIST-Hawaii
With a phone prefix of 9
Retry the connection 5 times before giving up
Checking the system sync status every 15 days
Dialout with the modem speakers on
Connect to the web browser user interface of the unit.
Login to configuration- or administrator-level mode and browse to the Modem Dial Out page.
Select ‘Modem Mode’ from the Serial Setup Port Mode pull down menu.
In the “Dialout if not synchronized after” fields, type ‘30’ in the Minutes field and type ‘0’ in
the other fields.
Type ‘9’ in the Prefix text field.
1. Select the Predefined radio button.
Select ‘NIST-Hawaii’ from the Predefined pull down menu.
In the “try calling” fields, type ‘5’ to try the connection 5 times.
In the “redial after” fields, type ‘15’ in the Days field and type ‘0’ in the other fields.
Change the modem speaker radio button settings to on.
Review the changes made and click Submit. The browser will ask for the unit to be rebooted to
apply the changes to the setup serial port mode.
Model 9183 Instruction Manual
Page 8-11
Reboot the unit.
After the reboot, the unit will function in modem mode. If you need to dial out immediately,
connect a modem to the setup serial port and then check the ‘Dialout now’ box and click Submit.
Recall that this option will only be available if the unit is not in time sync. If you have set the
“Dialout if now sync after” timer, the timer will begin counting down as soon as the software is
started.
To observe the result of the dial out, monitor the Dialout Log.
Once a dialout procedure is finished successfully, the unit’s state will be in sync. The unit’s
internal oscillator maintains this sync state for a duration of time called the holdover period.
During this time, there is no need to dialout again hence the dialout option is disabled.
There will be time periods when NIST’s ACTS telephone lines are used up. If you are unable to
connect, please try again at another time. Also, verify that your phone line is analog.
If you forgot you network settings while in modem mode:
While in modem mode, the setup serial port will still respond to the ‘net show’ command.
Disconnect the modem from the setup serial port and attach a serial cable to a PC with a terminal
software running as if you are connecting in console mode. Type ‘net show’ and the current
network settings will be displayed. Use this information to connect to the unit through telnet or
the web browser user interface to communicate with the unit.
Note: For additional assistance with troubleshooting the modem functionality, please refer to
Section 5.5.
Page 8-12
Model 9183 Instruction Manual
8.2
Option 4: Rubidium oscillator
Option 4 provides the NetClock with a self-calibrating ovenized rubidium oscillator. The
purpose of this oscillator is to provide a very accurate time base when GPS is either lost or
cannot be obtained due to site limitations. It is also used to provide a very stabile and accurate
10 MHz output with a high degree of holdover if GPS is lost. Because of its high degree of
stability, this oscillator provides the ability to greatly extend the hold-over period when GPS is
not present. Extending the hold-over period allows the unit to provide very accurate and useable
time stamps and a 10 MHz output for a longer period of time once time synchronization has been
lost.
Note: The NetClock must be ordered with Option 4 installed at the time of the initial purchase.
This option cannot be added after the NetClock has been shipped from the factory.
The Rubidium oscillator is atomic in nature but requires no MSDS.
8.2.1
Comparison of the Rubidium oscillator to the OCXO and standard
TCXO oscillators:
10 MHZ frequency output:
Rubidium oscillator (Option 4): 1x10-12 typical 24-hour average locked to GPS,
1x10-11 per month typical aging unlocked.
OCXO oscillator (Option 5): 1x10-11 typical 24-hour average locked to GPS, 2x10-9 per
week typical aging unlocked.
TCXO oscillator (Standard): 1x10-10 typical 24-hour average locked to GPS
Time drift while the NetClock is in Holdover mode (Loss of primary/backup reference):
Oscillator
Rb
OCXO
TCXO
TCXO
Option
Option 4
Option 5
Standard
Standard
Model 9183 Instruction Manual
Estimated Error Rates
0.18 microseconds / hour (nominal)
72 microseconds / hour (nominal)
1.0 milliseconds / hour (nominal)
7.2 milliseconds / hour (worst case)
Time to reach 2 ms
463 days
28 hours
2 hours (typical)
17 minutes*
Page 8-13
8.3
Option 5: OCXO oscillator
Option 5 provides the NetClock with a self-calibrating ovenized quartz oscillator. The purpose
of this oscillator is to provide a very accurate time base when GPS is either lost or cannot be
obtained due to site limitations and a very precise 10 MHz output. Because of its high degree of
stability, this oscillator provides the ability to greatly extend the hold-over period when GPS is
not present. Extending the hold-over period allows the unit to provide very accurate and useable
time stamps and a 10 MHz output for a longer period of time once time synchronization has been
lost.
The OCXO characteristics are not quite the same as the Option 04 Rubidium oscillator, but are
still much greater than the standard TCXO that is used in the product when option 4 and 5 are
not installed.
Note: The NetClock must be ordered with Option 5 installed at the time of the initial purchase.
This option cannot be added after the NetClock has been shipped from the factory
8.3.1
Comparison of the OCXO to the Rubidium and standard TCXO
oscillators:
10 MHZ frequency output:
OCXO oscillator (Option 5): 1x10-11 typical 24-hour average locked to GPS, 2x10-9 per
week typical aging unlocked.
Rubidium oscillator (Option 4): 1x10-12 typical 24-hour average locked to GPS,
1x10-11 per month typical aging unlocked.
TCXO oscillator (Standard): 1x10-10 typical 24-hour average locked to GPS.
Time Drift while the NetClock is in Holdover mode (Loss of primary/backup reference):
Oscillator
OCXO
Rubidium
TCXO
TCXO
Page 8-14
Option
Option 5
Option 4
Standard
Standard
Estimated Error Rates
72 microseconds / hour (nominal)
0.18 microseconds / hour (nominal)
1.0 milliseconds / hour (nominal)
7.2 milliseconds / hour (worst case)
Time to reach 2 ms
28 hours
463 days
2 hours (typical)
17 minutes*
Model 9183 Instruction Manual
47. [51]Paul A Vixie <[email protected]> TrueTime GPS driver, generic
TrueTime clock driver
48. [52]Ulrich Windl <[email protected]> corrected and
validated HTML documents according to the HTML DTD
_________________________________________________________________
9 SW License Notices
This file is automatically generated from html/copyright.htm
[53]gif
Copyright Notice
[sheepb.jpg] "Clone me," says Dolly sheepishly
_________________________________________________________________
The following copyright notice applies to all files collectively
called the Network Time Protocol Version 4 Distribution. Unless
specifically declared otherwise in an individual file, this notice
applies as if the text was explicitly included in the file.
***********************************************************************
*
*
* Copyright (c) David L. Mills 1992-2001
*
*
*
* Permission to use, copy, modify, and distribute this software and
*
* its documentation for any purpose and without fee is hereby
*
* granted, provided that the above copyright notice appears in all
*
* copies and that both the copyright notice and this permission
*
* notice appear in supporting documentation, and that the name
*
* University of Delaware not be used in advertising or publicity
*
* pertaining to distribution of the software without specific,
*
* written prior permission. The University of Delaware makes no
*
* representations about the suitability this software for any
*
* purpose. It is provided "as is" without express or implied
*
* warranty.
*
*
*
***********************************************************************
The following individuals contributed in part to the Network Time
Protocol Distribution Version 4 and are acknowledged as authors of
this work.
1. [1]Mark Andrews <[email protected]> Leitch atomic clock
controller
2. [2]Bernd Altmeier <[email protected]> hopf Elektronik serial
line and PCI-bus devices
3. [3]Viraj Bais <[email protected]> and [4]Clayton Kirkwood
<[email protected]> port to WindowsNT 3.5
4. [5]Michael Barone <michael,[email protected]> GPSVME fixes
5. [6]Karl Berry <[email protected]> syslog to file option
6. [7]Greg Brackley <[email protected]> Major rework of
WINNT
port. Clean up recvbuf and iosignal code into separate modules.
7. [8]Marc Brett <[email protected]> Magnavox GPS clock driver
8. [9]Piete Brooks <[email protected]> MSF clock driver,
Trimble PARSE support
9. [10]Reg Clemens <[email protected]> Oncore driver (Current maintainer)
10. [11]Steve Clift <[email protected]> OMEGA clock driver
11. [12]Casey Crellin <[email protected]> vxWorks (Tornado) port and
help with target configuration
12. [13]Sven Dietrich <[email protected]> Palisade reference
clock driver, NT adj. residuals, integrated Greg's Winnt port.
13. [14]John A. Dundas III <[email protected]> Apple A/UX
port
14. [15]Torsten Duwe <[email protected]> Linux
port
15. [16]Dennis Ferguson <[email protected]> foundation code for
NTP Version 2 as specified in RFC-1119
16. [17]Glenn Hollinger <[email protected]> GOES clock driver
17. [18]Mike Iglesias <[email protected]> DEC Alpha port
18. [19]Jim Jagielski <[email protected]> A/UX port
19. [20]Jeff Johnson <[email protected]> massive prototyping
overhaul
20. [21]Hans Lambermont <[email protected]> or
[22]<[email protected]> ntpsweep
21. [23]Poul-Henning Kamp <[email protected]> Oncore driver (Original
author)
22. [24]Frank Kardel [25]<[email protected]>
PARSE <GENERIC> driver (14 reference clocks), STREAMS modules
for
PARSE, support scripts, syslog cleanup
23. [26]William L. Jones <[email protected]> RS/6000 AIX
modifications, HPUX modifications
24. [27]Dave Katz <[email protected]> RS/6000 AIX port
25. [28]Craig Leres <[email protected]> 4.4BSD port, ppsclock,
Magnavox
GPS clock driver
26. [29]George Lindholm <[email protected]> SunOS 5.1 port
27. [30]Louis A. Mamakos <[email protected]> MD5-based authentication
28. [31]Lars H. Mathiesen <[email protected]> adaptation of foundation
code for Version 3 as specified in RFC-1305
29. [32]David L. Mills <[email protected]> Version 4 foundation: clock
discipline, authentication, precision kernel; clock drivers:
Spectracom, Austron, Arbiter, Heath, ATOM, ACTS, KSI/Odetics;
audio clock drivers: CHU, WWV/H, IRIG
30. [33]Wolfgang Moeller <[email protected]> VMS port
31. [34]Jeffrey Mogul <[email protected]> ntptrace utility
32. [35]Tom Moore <[email protected]> i386 svr4 port
33. [36]Kamal A Mostafa <[email protected]> SCO OpenServer port
34. [37]Derek Mulcahy <[email protected]> and [38]Damon
Hart-Davis <[email protected]> ARCRON MSF clock driver
35. [39]Rainer Pruy <[email protected]>
monitoring/trap scripts, statistics file handling
36. [40]Dirce Richards <[email protected]> Digital UNIX V4.0 port
37. [41]Wilfredo Sánchez <[email protected]> added support for
NetInfo
38. [42]Nick Sayer <[email protected]> SunOS streams modules
39. [43]Jack Sasportas <[email protected]> Saved a Lot of
space on the stuff in the html/pic/ subdirectory
40. [44]Ray Schnitzler <[email protected]> Unixware1 port
41. [45]Michael Shields <[email protected]> USNO clock driver
42. [46]Jeff Steinman <[email protected]> Datum PTS clock
driver
43. [47]Harlan Stenn <[email protected]> GNU automake/autoconfigure
makeover, various other bits (see the ChangeLog)
44. [48]Kenneth Stone <[email protected]> HP-UX port
45. [49]Ajit Thyagarajan <[email protected]>IP multicast/anycast
support
46. [50]Tomoaki TSURUOKA <[email protected]>TRAK clock
driver
Model 9183 Instruction Manual
[54]David L. Mills <[email protected]>
References
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:jagubox.gsfc.nasa.gov
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
http://www4.informatik.uni-erlangen.de/~kardel
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:pebbles.jpl.nasa.gov
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
mailto:[email protected]
file://localhost/backroom/ntp-stable/html/index.htm
mailto:[email protected]
This file is part of the OpenSSH software.
The licences which components of this software fall under are as
follows. First, we will summarize and say that all components
are under a BSD licence, or a licence more free than that.
OpenSSH contains no GPL code.
1)
*
*
*
*
*
*
*
Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
All rights reserved
As far as I am concerned, the code I have written for this software
can be used freely for any purpose. Any derived versions of this
software must be clearly marked as such, and if the derived work is
incompatible with the protocol description in the RFC file, it must
be
* called by a name other than "ssh" or "Secure Shell".
[Tatu continues]
* However, I am not implying to give any licenses to any patents or
* copyrights held by third parties, and the software includes parts
that
* are not under my direct control. As far as I know, all included
* source code is used in accordance with the relevant license
agreements
* and can be used freely for any purpose (the GNU license being the
most
* restrictive); see below for details.
[However, none of that term is relevant at this point in time. All of
these restrictively licenced software components which he talks about
have been removed from OpenSSH, i.e.,
-
RSA is no longer included, found in the OpenSSL library
IDEA is no longer included, its use is deprecated
DES is now external, in the OpenSSL library
GMP is no longer used, and instead we call BN code from OpenSSL
Zlib is now external, in a library
The make-ssh-known-hosts script is no longer included
TSS has been removed
MD5 is now external, in the OpenSSL library
RC4 support has been replaced with ARC4 support from OpenSSL
Blowfish is now external, in the OpenSSL library
[The licence continues]
Page 9-1
*
*
*
*
*
*
*
*
*
*
Note that any information and cryptographic algorithms used in this
software are publicly available on the Internet and at any major
bookstore, scientific library, and patent office worldwide. More
information can be found e.g. at "http://www.cs.hut.fi/crypto".
The legal status of this program is some combination of all these
permissions and restrictions. Use only at your own responsibility.
You will be responsible for any legal consequences yourself; I am
not
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
making any claims whether possessing or using this is legal or not
in
6)
One component of the ssh source code is under a 4-clause BSD license,
held by the University of California, since we pulled these parts from
original Berkeley code. The Regents of the University of California
have declared that term 3 is no longer enforceable on their source code,
but we retain that license as is.
your country, and I am not taking any responsibility on your
behalf.
NO WARRANTY
BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT
WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE
RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
SERVICING,
REPAIR OR CORRECTION.
* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
* code or tables extracted from it, as desired without
restriction.
* Copyright (c) 1983, 1990, 1992, 1993, 1995
*
The Regents of the University of California. All rights
reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*
notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*
notice, this list of conditions and the following disclaimer in
the
*
documentation and/or other materials provided with the
distribution.
* 3. All advertising materials mentioning features or use of this
software
*
must display the following acknowledgement:
*
This product includes software developed by the University of
*
California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its
contributors
*
may be used to endorse or promote products derived from this
software
*
without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF
* SUCH DAMAGE.
3)
7)
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT
LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES
SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH
ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
THE
POSSIBILITY OF SUCH DAMAGES.
2)
The 32-bit CRC implementation in crc32.c is due to Gary S. Brown.
Comments in the file indicate it may be used for any purpose
without
restrictions:
The 32-bit CRC compensation attack detector in deattack.c was
contributed by CORE SDI S.A. under a BSD-style license.
*
*
*
*
*
*
*
*
*
*
*
Cryptographic attack detector for ssh - source code
*
*
*
*
*
CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR MISUSE OF THIS
SOFTWARE.
Remaining components of the software are provided under a standard
2-term BSD licence with the following names as copyright holders:
Markus Friedl
Theo de Raadt
Niels Provos
Dug Song
Aaron Campbell
Damien Miller
Kevin Steves
Daniel Kouril
Per Allansson
Copyright (c) 1998 CORE SDI S.A., Buenos Aires, Argentina.
All rights reserved. Redistribution and use in source and binary
forms, with or without modification, are permitted provided that
this copyright notice is retained.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES ARE DISCLAIMED. IN NO EVENT SHALL CORE SDI S.A. BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY
*
*
*
*
*
*
*
OR
Ariel Futoransky <[email protected]>
<http://www.core-sdi.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the
4)
ssh-keygen was contributed by David Mazieres under a BSD-style
license.
* Copyright 1995, 1996 by David Mazieres <[email protected]>.
*
* Modification and redistribution in source and binary forms is
* permitted provided that due credit is given to the author and
the
* OpenBSD project by leaving this copyright notice intact.
5)
The Rijndael implementation by Vincent Rijmen, Antoon Bosselaers
and Paulo Barreto is in the public domain and distributed
with the following license:
* @version 3.0 (December 2000)
*
* Optimised ANSI C code for the Rijndael cipher (now AES)
*
* @author Vincent Rijmen <[email protected]>
* @author Antoon Bosselaers
<[email protected]>
* @author Paulo Barreto <[email protected]>
*
* This code is hereby placed in the public domain.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY
EXPRESS
Page 9-2
*
documentation and/or other materials provided with the
distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
LICENSE ISSUES
==============
The OpenSSL toolkit stays under a dual license, i.e. both the conditions
of
the OpenSSL License and the original SSLeay license apply to the toolkit.
Model 9183 Instruction Manual
See below for the actual license texts. Actually both licenses are
BSD-style
Open Source licenses. In case of any license issues related to
OpenSSL
please contact [email protected].
OpenSSL License
--------------/* ====================================================================
* Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*
notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*
notice, this list of conditions and the following disclaimer in
*
the documentation and/or other materials provided with the
*
distribution.
*
* 3. All advertising materials mentioning features or use of this
*
software must display the following acknowledgment:
*
"This product includes software developed by the OpenSSL Project
*
for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be
used to
*
endorse or promote products derived from this software without
*
prior written permission. For written permission, please contact
*
[email protected].
*
* 5. Products derived from this software may not be called "OpenSSL"
*
nor may "OpenSSL" appear in their names without prior written
*
permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
*
acknowledgment:
*
"This product includes software developed by the OpenSSL Project
*
for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
Original SSLeay License
----------------------/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long
as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL
documentation
* included with this distribution is covered by the same copyright
terms
* except that the holder is Tim Hudson ([email protected]).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given
attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
*
notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*
notice, this list of conditions and the following disclaimer in
the
*
documentation and/or other materials provided with the
distribution.
* 3. All advertising materials mentioning features or use of this
software
*
must display the following acknowledgement:
*
"This product includes cryptographic software written by
*
Eric Young ([email protected])"
*
The word 'cryptographic' can be left out if the rouines from the
library
*
being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative
thereof) from
*
the apps directory (application code) you must include an
acknowledgement:
Model 9183 Instruction Manual
*
"This product includes software written by Tim Hudson
([email protected])"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version
or
* derivative of this code cannot be changed. i.e. this code cannot simply
be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
---- Part 1: CMU/UCD copyright notice: (BSD like) ----Copyright 1989, 1991, 1992 by Carnegie Mellon University
Derivative Work - 1996, 1998-2000
Copyright 1996, 1998-2000 The Regents of the University of California
All Rights Reserved
Permission to use, copy, modify and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appears in all copies and
that both that copyright notice and this permission notice appear in
supporting documentation, and that the name of CMU and The Regents of
the University of California not be used in advertising or publicity
pertaining to distribution of the software without specific written
permission.
CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL CMU OR
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
---- Part 2: Networks Associates Technology, Inc copyright notice (BSD) ---Copyright (c) 2001-2003, Networks Associates Technology, Inc
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Networks Associates Technology, Inc nor the
names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---- Part 3: Cambridge Broadband Ltd. copyright notice (BSD) ----Portions of this code are copyright (c) 2001-2003, Cambridge Broadband Ltd.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* The name of Cambridge Broadband Ltd. may not be used to endorse or
promote products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---- Part 4: Sun Microsystems, Inc. copyright notice (BSD) ----Copyright © 2003 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
California 95054, U.S.A. All rights reserved.
Use is subject to license terms below.
This distribution may include materials developed by third parties.
Sun, Sun Microsystems, the Sun logo and Solaris are trademarks or registered
trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
Page 9-3
*
Neither the name of the Sun Microsystems, Inc. nor the
names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS
IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---- Part 5: Sparta, Inc copyright notice (BSD) ----Copyright (c) 2003-2004, Sparta, Inc
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice,
Page 9-4
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Networks Associates Technology, Inc nor the
names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*
This open software is available for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange
Model 9183 Instruction Manual
NETCLOCK
MODEL 9183
MANUAL ADDENDUM
SOFTWARE v2.3.0 TO v2.3.1
95 Methodist Hill Drive
Rochester, NY 14623
Phone: 585.321.5800
Fax: 585.321.5219
www.spectracomcorp.com
Part Number 9183-5001-0050
Manual Addendum
22 December 2005
Copyright © 2005 Spectracom Corporation. The contents of this publication may not be
reproduced in any form without the written permission of Spectracom Corporation. Printed in
USA.
Specifications subject to change or improvement without notice.
Spectracom, NetClock, Ageless, TimeGuard, TimeBurst, TimeTap, LineTap, MultiTap,
VersaTap, and Legally Traceable Time are Spectracom registered trademarks. All other
products are identified by trademarks of their respective companies or organizations. All rights
reserved.
SPECTRACOM LIMITED WARRANTY
LIMITED WARRANTY
Spectracom warrants each new product manufactured and sold by
it to be free from defects in software, material, workmanship, and
construction, except for batteries, fuses, or other material normally
consumed in operation that may be contained therein AND AS
NOTED BELOW, for five years after shipment to the original
purchaser (which period is referred to as the “warranty period”).
This warranty shall not apply if the product is used contrary to the
instructions in its manual or is otherwise subjected to misuse,
abnormal operations, accident, lightning or transient surge, repairs
or modifications not performed by Spectracom.
The GPS receiver is warranted for one year from date of
shipment and subject to the exceptions listed above. The
power adaptor, if supplied, is warranted for one year from date
of shipment and subject to the exceptions listed above.
THE ANALOG CLOCKS ARE WARRANTED FOR ONE YEAR
FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS
LISTED ABOVE.
THE TIMECODE READER/GENERATORS ARE WARRANTED FOR
ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE
EXCEPTIONS LISTED ABOVE.
The Rubidium oscillator, if supplied, is warranted for two years from
date of shipment and subject to the exceptions listed above.
All other items and pieces of equipment not specified above,
including the antenna unit, antenna surge suppressor and antenna
pre-amplifier are warranted for 5 years, subject to the exceptions
listed above.
WARRANTY CLAIMS
Spectracom’s obligation under this warranty is limited to in-factory
service and repair, at Spectracom’s option, of the product or the
component thereof, which is found to be defective. If in
Spectracom’s judgment the defective condition in a Spectracom
product is for a cause listed above for which Spectracom is not
responsible, Spectracom will make the repairs or replacement of
components and charge its then current price, which buyer agrees
to pay.
Spectracom shall not have any warranty obligations if the
procedure for warranty claims is not followed. Users must notify
Spectracom of the claim with full information as to the claimed
defect. Spectracom products shall not be returned unless a return
authorization number is issued by Spectracom.
SPECTRACOM
Spectracom products must be returned with the description of the
claimed defect and identification of the individual to be contacted
if additional information is needed. Spectracom products must be
returned properly packed with transportation charges prepaid.
Shipping expense: Expenses incurred for shipping Spectracom
products to and from Spectracom (including international customs
fees) shall be paid for by the customer, with the following
exception. For customers located within the United States, any
product repaired by Spectracom under a “warranty repair” will be
shipped back to the customer at Spectracom’s expense unless
special/faster delivery is requested by customer.
Spectracom highly recommends that prior to returning equipment for
service work, our technical support department be contacted to
provide trouble shooting assistance while the equipment is still
installed. If equipment is returned without first contacting the support
department and “no problems are found” during the repair work,
an evaluation fee may be charged.
EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE,
SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND
WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER
MATERIALS PROVIDED BY SPECTRACOM, INCLUDING
WITHOUT LIMITATION ANY IMPLIED WARRANTY OR
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Spectracom shall have no liability or responsibility to the original
customer or any other party with respect to any liability, loss, or
damage caused directly or indirectly by an Spectracom product,
material, or software sold or provided by Spectracom, replacement
parts or units, or services provided, including but not limited to any
interruption of service, excess charges resulting from malfunctions of
hardware or software, loss of business or anticipatory profits
resulting from the use or operation of the Spectracom product or
software, whatsoever or howsoever caused. In no event shall
Spectracom be liable for any direct, indirect, special or
consequential damages whether the claims are grounded in
contract, tort (including negligence), or strict liability.
EXTENDED WARRANTY COVERAGE
Extended warranties can be purchased for additional periods
beyond the standard five-year warranty. Contact Spectracom no
later than the last year of the standard five-year warranty for
extended coverage.
95 Methodist Hill Drive
Rochester, NY 14623
+1.585.321.5800 FAX: +1.585.321.5218 www.spectracomcorp.com [email protected]
Spectracom Corporation
9183 – v2.3.1
Table of Contents
1
CHANGES FOR V2.3.0 TO V2.3.1 ........................................................... 1-1
2
NETWORK AND WEB USER INTERFACE CHANGES ................................. 2-1
2.1
Command Line Changes ...............................................................................................................2-2
2.1.1
net telnet ...............................................................................................................................2-2
2.1.2
net ftp....................................................................................................................................2-2
2.1.3
net https ................................................................................................................................2-2
2.1.4
net sshd (Includes SSH, SCP, and SFTP)............................................................................2-2
2.2
Web Server Timeout......................................................................................................................2-2
2.2.1
web exit.................................................................................................................................2-3
2.2.2
web timeout ..........................................................................................................................2-3
2.3
HTTPS Certificate 20-Year Life .....................................................................................................2-4
2.4
Modem ..........................................................................................................................................2-5
2.4.1
Baud Rate.............................................................................................................................2-5
2.4.2
Setup Serial Port Mode.........................................................................................................2-6
2.4.3
Modem Command Line Commands .....................................................................................2-8
2.5
NTP .............................................................................................................................................2-10
2.5.1
NTP Command Line ...........................................................................................................2-11
2.6
System Time................................................................................................................................2-11
2.7
Further Assistance.......................................................................................................................2-12
List of Figures
Figure 2-1: Enabling and Disabling Network Interfaces ..............................................................................2-1
Figure 2-2: HTTPS Certificate Creation Web UI Page................................................................................2-4
Figure 2-3: Baud Rate Support...................................................................................................................2-5
Figure 2-4: Switching from Console Mode to Modem Mode .......................................................................2-6
Figure 2-5: Caption.....................................................................................................................................2-7
Figure 2-6: Reference Identifier Field .......................................................................................................2-10
Figure 2-7: Setting System Time Options .................................................................................................2-12
Refer to Complete Operations and Maintenance Manual for More Information
iii
9183 – v2.3.1
iv
Spectracom Corporation
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
9183 – v2.3.1
1 Changes for v2.3.0 to v2.3.1
This addendum to the operations and maintenance manuals for the Spectracom
NetClock® Model 9183 (current to software version 2.3.0) describes the changes made
to software features for version 2.3.1.
These changes include additions and
enhancements to the Web User Interface (Web UI), to the command line, and in SNMP.
2 Network and Web User Interface Changes
The user may now enable and disable all network interfaces. The HTTPS port has
been added to the Web UI and may be controlled on the System Setup web page on
the Network tab.
Figure 2-1: Enabling and Disabling Network Interfaces
Allowing the user to enable and disable at will all network interfaces provides greater
security and stability of the NetClock in hostile network environments. It also allows
users to comply with corporate security policies regarding network access.
9183 v2.3.0 to v2.3.1 Addendum
1-1/2-1
9183 – v2.3.1
Spectracom Corporation
2.1 Command Line Changes
The network interface command line now allows the user to enable and disable all ports
for Telnet, FTP, HTTP, HTTPS and SSH.
The new commands for the network interface are:
telnet
ftp
https
sshd
net telnet [yes,no]
net ftp [yes,no]
net https [yes,no]
net sshd [yes,no]
– Enable or disable telnet on port 23
– Enable or disable ftp on port 21
– Enable or disable https on port 443
– Enable or disable ssh on port 22
2.1.1 net telnet
This command allows user to enable or disable the telnet port. Input yes to enable no to
disable. Input net telnet yes to enable and net telnet no to disable.
2.1.2 net ftp
This command allows user to enable or disable FTP the port. Input net ftp yes to
enable and net ftp no to disable.
2.1.3 net https
This command allows the user to enable or disable the HTTPS port controlling access
to the secure web server. Enter net https yes to enable and net https no to disable.
2.1.4 net sshd (Includes SSH, SCP, and SFTP)
This command allows the user to enable or disable the SSH port controlling access to
secure SSH protocols SSH secure shell, SCP secure copy, and SFTP secure file
transfer. Input net sshd yes to enable and net sshd no to disable.
2.2 Web Server Timeout
The manner in which the GoAhead Web Server functions requires users to terminate
Web UI sessions by clicking “Exit Connection to the Product”. Clicking the “X” button on
the browser does not end the session, but closes the window – which means the user
cannot log in again until the session expires. In some versions of the software, this is
15 to 30 minutes, which some users find inconvenient.
Version 2.3.1 software includes new console commands that allow administrator-level to
users to exit the current locked Web UI session using telnet or ssh. Also added is a
command to set the timeout to a user-defined value, which means users may now
dictate the length of time it takes for the session to expire.
2-2
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
9183 – v2.3.1
Use the 'web help' command to see a list of net commands. These include web exit
and web timeout minutes (to set the connection timeout).
2.2.1 web exit
This command allows the user to exit the current web session from telnet or ssh
connections.
2.2.2 web timeout
This command allows the user to set the web session timeout to any value between 1
and 60 minutes (inclusive). Spectracom recommends selecting a timeout interval of 10
to 15 minutes.
9183 v2.3.0 to v2.3.1 Addendum
2-3
9183 – v2.3.1
Spectracom Corporation
2.3 HTTPS Certificate 20-Year Life
The HTTPS Certificate Creation Web UI page has been changed to indicate required
parameters (with a red asterisk). Refer to the Security tab on the System Setup page.
The default Spectracom HTTPS Web Server Certificate is now 20 years. The new
default Certificate life is therefore 7300 days (20 years, in days) and appears on the
page as:
* Self Signed Certificate Expiration (Days):
7300
Figure 2-2: HTTPS Certificate Creation Web UI Page
2-4
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
9183 – v2.3.1
2.4 Modem
Modem functionality has been improved in software version 2.3.1. ITU-R TF583.4
format is now supported. Support has also been added for the two most commonly used
baud rates (1200 and 9600 baud) for ITU-R and ACTS formats. NetClocks running
software version 2.3.0 require the user to reboot the unit when switching from Console
to Modem mode. In software version 2.3.1, it is no longer necessary to reboot when
switching from one mode to the other.
The user may select the Baud Rate or the Setup Port mode as shown in the following
sections.
2.4.1 Baud Rate
The baud rates 1200 and 9600 are supported because they are the most commonly
used baud rates for ITU-R and ACTS formats worldwide. ITU-R format typically uses
1200 baud, while ACTS format typically uses 9600 baud.
Figure 2-3: Baud Rate Support
9183 v2.3.0 to v2.3.1 Addendum
2-5
9183 – v2.3.1
Spectracom Corporation
2.4.2 Setup Serial Port Mode
To switch from Serial Console Port mode, select Modem mode (Figure 2-4). Once the
Modem mode is selected, click Modem Dial Out (Figure 2-5). This displays all the
modem tabs.
Figure 2-4: Switching from Console Mode to Modem Mode
2-6
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
9183 – v2.3.1
Figure 2-5: Modem Dial Out
9183 v2.3.0 to v2.3.1 Addendum
2-7
9183 – v2.3.1
Spectracom Corporation
2.4.3 Modem Command Line Commands
New modem line commands have been added to facilitate user operation and
debugging of modem features. This supports customers in the field should there be
issues concerning other dial-up time references.
The provided modem commands are:
mdo help
mdo avg
mdo log
mdo stat
mdo delaycomp
mdo mode
mdo dialnow
mdo baud
mdo speaker
2.4.3.1
mdo help – Used to get detailed information for modem commands
mdo avg [on|off] [#|auto] – Set the averaging behavior of the modem
mdo log [debug|normal] – Set logging mode
mdo stat [reset] – View or reset the modem statistics
mdo delaycomp [spring|itur] [on|off] – Enable/disable delay
compensation
mdo mode [console|modem] [1200|9600] – Set port mode and
optionally change baud rate
mdo dialnow [test] – Dial out immediately
mdo baud [1200|9600] – Set baud rate
mdo speaker [on|off] – Set modem speaker enable
mdo avg
Usage: mdo avg [on|off] [#|auto]
This command switches the averaging algorithm on and off. If averaging is turned on
(mdo avg on), the number of points to average must be specified. If the number of
points is specified as auto, the unit will choose the appropriate number. If no parameter
is specified, the current state will be printed.
NOTE: By default, averaging is NOT used. Averaging is recommended only after a
few successful dial-outs have been performed.
2.4.3.2
mdo log
This command allows the user to turn on logging of call data and state to debug files for
use in providing feedback to Spectracom when testing with unsupported ACTS or ITU-R
time references. The call data files are named call#.log and are found in the logs
directory.
NOTE: Do not leave this mode switched on, as the number of log files increases with
each call. Switch it on as directed by Spectracom if you are testing a new dialup time service.
Enter mdo log debug to switch the log on. Enter mdo log normal to switch the log off.
When detailed logging is enabled, every message from the modem is printed to a file.
Remember that this mode should be used only for debugging, as files will accumulate.
2-8
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
2.4.3.3
9183 – v2.3.1
mdo stat
This command allows the user to view or reset modem statistics. Enter mdo stat to
print the statistics to the console. Enter mdo stat reset to reset the statistics.
2.4.3.4
mdo delaycomp
This command skips the delay compensation step in ACTS and ITU-R protocols. This is
required in the UK when using the free ITU-R NPL format (only the pay-for-use format
supports delay compensation). Skipping the delay compensation may be useful in
debugging or synchronizing to untested ACTS or ITU-R protocols. If the modem
indicates a No Sync error when calling and connecting, try disabling delay
compensation.
NOTE: Disabling delay
synchronization.
compensation
reduces
the
accuracy
of
the
time
Enter mdo delaycomp spring on or mdo delaycomp itur on to enable delay
compensation. Enter mdo delaycomp spring off or mdo delaycomp itur off to
disable delay compensation.
2.4.3.5
mdo mode
This command sets the console mode and, optionally, changes the baud rate. Enter
mdo mode console or mdo mode modem to switch between console and modem
modes. Enter mdo mode modem 1200 or mdo mode modem 9600 to set the baud
rate.
2.4.3.6
mdo dialnow
This command dials out the modem. Enter mdo dialnow to dial out immediately.
2.4.3.7
mdo baud
This command sets the baud rate.
NOTE: ITU-R protocols typically use 1200 baud, while ACTS protocols typically use
9600 baud. NIST ACTS may support either, but 9600 baud is recommended.
2.4.3.8
mdo speaker
Entering this command switches the modem speaker on and off. Enter mdo speaker
on to enable the speaker and mdo speaker off to disable it.
9183 v2.3.0 to v2.3.1 Addendum
2-9
9183 – v2.3.1
Spectracom Corporation
2.5 NTP
The NTP Daemon has been extended to allow the user to define the Reference
Identifier string. A Reference Identifier is a 4-byte field in the NTP packets indicating, in
either numerical or ASCII format, the time source used by the NetClock. This field
contains the Time Identifier, such as GPS, STCI (Serial Time Code Input), or Modem
Format (ITUR, PTB, SP [SPRING], NPL etc.).
The user can set the Reference Identifier to indicate the actual time source, such as
WWVB for a 9188 NetClock using the Serial Time Code Interface (STCI) to connect to a
NetClock/2 or some other WWVB receiver. The user may also use the 4-byte field as
an abbreviation for the location of the NetClock, such as NYC, CHI, BOS, etc. Refer to
Figure 2-6.
Figure 2-6: Reference Identifier Field
Spectracom provides a means to set a Reference Identifier for the primary time
sources, such as GPS, Serial Time Code Input, or User Defined. A means to define the
2-10
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
9183 – v2.3.1
Modem Reference Identifier separately is also provided for NetClocks that include a
Modem as a backup time source (Figure 2-6).
2.5.1 NTP Command Line
The NTP Daemon also supports new commands for software version 2.3.1:
ntp refsrc
ntp refsrc [primary|modem] [on|off] [‘4-character-string] – Sets NTP
reference source
ntp timeout ntp timeout [seconds] – Used to set timeout for remote access tool
2.5.1.1
ntp refsrc
This command allows the user to set the primary and modem user-defined reference
identifiers. Input this as ntp refsrc [primary|modem] [on|off] ['4-character-string]
with the appropriate entries.
2.5.1.2
ntp timeout
This command allows the user to set the time difference allowed between the remote
Network Access Tool and the NetClock. This is a security feature avoiding replay
attacks. Enter ntp timeout [seconds] to set the value.
2.6 System Time
The System Time Tab found on the System Setup web page allows the user to view the
current time on the unit using UTC or a Local Clock defined by the user. This page also
allows the user to set (manually) the system time. The page has been modified for
version 2.3.1 software to include two additional check boxes. The “Allow user to set
time using SNMP or Web UI” checkbox allows user inputs from SNMP or this Web UI to
set the system time manually. If the checkbox is NOT checked, users may not manually
input time. Refer to Figure 2-7.
NOTE: When a user sets the time manually, the serial time code messages from the
unit and the NTP packets will indicate that the NetClock is NOT synchronized.
Setting the time manually means the unit is NOT traceable to UTC. When
entering time manually, you MUST use UTC time. If you enter local time (or a
time from any other time zone), the time will be misinterpreted as UTC.
9183 v2.3.0 to v2.3.1 Addendum
2-11
9183 – v2.3.1
Spectracom Corporation
Figure 2-7: Setting System Time Options
2.7 Further Assistance
If you require additional assistance integrating this addendum with your operations and
maintenance manual(s), please contact Spectracom Customer Service at
585.321.5800.
Spectracom may also be reached through our website at
www.spectracomcorp.com.
2-12
9183 v2.3.0 to v2.3.1 Addendum
Spectracom Corporation
95 Methodist Hill Drive
Rochester, NY 14623
www.spectracomcorp.com
Phone: 585.321.5800
Fax: 585.321.5219

advertisement

Was this manual useful for you? Yes No
Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Related manuals

advertisement