Cross Technologies 2099-2504 Frequency Source, 4-Port 25 MHz Reference Owner's Manual

Model 2099-25xx
Instruction Manual
25MHz Frequency Source
July 2011, Rev. A
MODEL 2099
MONITOR
MENU
LEVEL = +13DBM
FREQUENCY SOURCE
POWER
1
2
CROSS TECHNOLOGIES INC.
EXECUTE
ALARM OVEN REMOTE
Data, drawings, and other material contained herein are proprietary to Cross Technologies, Inc.,
but may be reproduced or duplicated without the prior permission of Cross Technologies, Inc.
for purposes of operating the equipment. Printed in USA.
When ordering parts from Cross Technologies, Inc., be sure to include the equipment
model number, equipment serial number, and a description of the part.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB: www.crosstechnologies.com
E-MAIL: [email protected]
INSTRUCTION MANUAL
MODEL 2099-25xx, 10MHz Frequency Source
TABLE OF CONTENTS
Warranty
1.0 General
1.1 Equipment Description
1.2 Technical Characteristics
1.3 Monitors and Controls
2.0 Installation
2.1 Mechanical
2.2 Rear Panel Outputs
2.3 Front Panel Indicators
2.4 Operation
2.5 Menu Settings
3.0 Environmental Use Information
PAGE
2
3
3
4
5
7
7
8
9
10
11
13
WARRANTY - The following warranty applies to all Cross Technologies, Inc. products.
All Cross Technologies, Inc. products are warranted against defective materials and
workmanship for a period of one year after shipment to customer. Cross Technologies,
Inc.’s obligation under this warranty is limited to repairing or, at Cross Technologies, Inc.’s
option, replacing parts, subassemblies, or entire assemblies. Cross Technologies, Inc. shall
not be liable for any special, indirect, or consequential damages. This warranty does not
cover parts or equipment which have been subject to misuse, negligence, or accident by the
customer during use. All shipping costs for warranty repairs will be prepaid by the
customer. There are not other warranties, express or implied, except as stated herein.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB: www.crosstechnologies.com
E-MAIL: [email protected]
2099-25xx Manual_A
Page 2
07/25/11
MODEL 2099-25xx 10MHz Frequency Source
1.0 General
1.1 Equipment Description
The Model 2099-25XX Frequency Source provides four (xx=04), eight (xx=08) or twelve (xx=12) 25 MHz
reference outputs from a 0.03 ppm high stability oven controlled crystal oscillator (OCXO). Front panel LEDs
indicate alarm (red), oven warm-up (yellow), remote (yellow), and power from the two redundant power
supplies (green). The output level is +13 dBm (max), and the 2099-25XX works into either a 75 or 50 load.
An available External Reference option (Option E) provides an external reference input which can be used to
lock the internal 25 MHz source to a high stability external reference. An LCD display shows the 25 MHz
output level (or pass-through gain, mode setting and lock reference frequency (Option E)). Connectors are
50/75 Ohm BNC female. A relay contact closure or open indicates when an alarm occurs. The 2099-25XX is
housed in a 1RU rack mountable chassis, and is powered by redundant power supplies fed by separate fused
100-240 ±10% VAC AC input connectors. An RS232/422/485 (selectable) M&C interface provides remote
control of the unit.
The available External Reference option (option -E) provides an external reference input which can be used
to lock the internal source to an external reference or it may be redistributed with an adjustable pass-through
gain of -10 to +10 dB. Option -E includes the following operational modes:
1. Internal - Internal reference is present on the reference outputs (only mode for units without option -E).
2. Ext Pass - The external reference is passed to the reference outputs regardless of alarm condition. An alarm
condition occurs when the external reference input level drops below 0 dBm ± 1 dB (signal is lost).
3. Ext Pass Auto - The external reference is passed to the reference outputs, but upon an alarm condition (ext
ref signal loss) the unit will switch to the internal reference until the alarm condition is cleared.
4. Ext Lock - The internal reference is present on the reference outputs and locked to the external reference
signal (1, 5, 10, 20, or 25 MHz as set by the user) regardless of alarm condition. An alarm condition occurs
when the internal PLL is unable to lock to the external reference signal.
5. Ext Lock Auto - Same operation as Ext Lock mode except that the unit will revert to the internal mode upon
an alarm condition. Once the external reference is present again and the PLL locks to it, the alarm is cleared,
and the internal reference will lock to the external signal again.
MODEL 2099
MONITOR
LEVEL = +13DBM
MENU
FREQUENCY SOURCE
POWER
1
2
CROSS TECHNOLOGIES INC.
EXECUTE
ALARM OVEN REMOTE
AC1
AC2
GND
MONITOR
AND
CONTROL
EXT REF
INPUT
REFERENCE OUTPUTS
5 4 3 2 1
9 8 7 6
J1
J13
J19
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
FIGURE 1.1 Model 2099-25xx Front and Rear Panels
* = OPTIONAL
LEVEL = +13 DBM
MONITOR
EXT LOCK*
CONTROLLER
EXT REF*
INT 10MHZ
S
P
L
I
T
T
E
R
REF OUT 01
REF OUT 02
•
•
•
•
REF OUT XX
OCXO
FIGURE 1.2
2099-25xx Manual_A
Model 2099-25xx 10MHz Frequency Source Block Diagram
Page 3
07/25/11
1.2 Technical Characteristics
TABLE 1.0 2099-25xx 10MHz Frequency Source Specifications*
Output Characteristics
Number of outputs
4, 8, or 12 (including monitor)
Impedance
50/75
Return Loss
>18dB
Frequency
25.0000 MHz
Level, adjustable (int. ref.) -7 dBm to +13 dBm
Harmonics
< -30 dBC, < -40 typ.
Spurious
< -75 dBC
External Reference Input Characteristics
Impedance
50/75
Return Loss
> 18 dB
Level
+3 dBm ± 3 dB
Oscillator Characteristics
Over Temperature
Aging
Warm Up
Tuning Adjsutment
± 0.03 ppm max 0˚C to +50˚C
± 0.001 ppm per day; ±0.1 ppm per year
± 0.1 ppm in 4 minutes; ±0.1 ppm in 1 hour
± 1 ppm
Phase Noise @ Freq
10Hz
100Hz
1kHz
10kHz
dBC/Hz
-110
-140
-155
-160
Controls & Indicators
Output Level Adjust
Power
Remote
Oven Warm-Up
Alarm
Direct readout LCD; push-button switches or remote selection
Green LEDs
Yellow LED, RS232C/422/485
Yellow LED
Red LED, External contact closure
Other
10 MHz Connectors
Alarm/Remote Connector
Size
Power
Options
-E
BNC (female) 50/75 impedance
DB9 (female) - NO or NC contact closure on Alarm
19 inch, 1RU standard chassis • 1.75”H x 12.0”D
Redundant 100-240 ±10% VAC, 47-63 Hz, 20 W max. power supplies
External Reference Input (includes INTERNAL, EXTERNAL LOCK, and
EXTERNAL LOCK-AUTO modes)
*+10˚C to +40˚C; Specifications subject to change without notice.
2099-25xx Manual_A
Page 4
07/25/11
1.3 Monitor and Control Interface
A) Remote serial interface
Protocol: RS-232C/422/485, 9600 baud rate, no parity, 8 data bits, 1 start bit, and 1 stop bit.
Connector: Rear panel, DB-9 female
J10 Pinouts (RS-232C/422/485)
Pin
Function
1
Rx-
2
Rx+ (RS-232C)
3
Tx+ (RS-232C)
4
Tx-
5
GND
6
Alarm Relay: Common
7
Alarm Relay: Normally Open
8
Not Used
9
Alarm Relay: Normally Closed
B) Status Requests
Table 1.1 lists the status requests for the 2099-25xx and briefly describes them
.
* PLEASE NOTE: The two character {aa}(00-31) prefix, in the table below,
should be used ONLY when RS-485, (OPTION-Q), is selected.
Table 1.1 2099-25xx Status Requests
Requests
Command
Syntax*
Description
Command Status
{aaS1}
Returns {aaS1bbbcccddeeeeefghijk} where:
(units WITH option E)
• bbb = Output Level (-10 to +13 dBm)
• ccc = Gain (-10 to +10 dB)
• dd = External Reference Frequency (1, 5, 10, or 25 MHz)
• eeeee = Reference Offset (-2000 to +2000)
• f = 1 - Oven Warm Up Alarm
• g = 1 - PLL Lock Detect
• h = 1 - External Reference Present
• i = 1 - Internal Reference Present
• j = 1 - Summary Alarm
• k = 1 - FAULT Occured (EXT LOCK AUTO Mode)**
Command Status
(units WITHOUT option E)
{aaS2}
Returns {aaS2bbbcccccdef} where:
• bbb = Output Level (-10 to +13 dBm)
• ccccc = Reference Offset (-2000 to +2000)
• d = 1 - Oven Warm Up Alarm
• e = 1 - Internal Reference Present
• f = 1 - Summary Alarm
*FAULT occurs when in EXT LOCK AUTO mode and the external reference fails. This status can be reset
remotely using the command in Table 1.2 or manually by pressing Menu/Execute followed by pressing up
once or down once on the vertical toggle switch on the front panel (see Figure 2.2).
2099-25xx Manual_A
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07/25/11
C) Commands
Table 1.2 lists the commands for the 2099-25xx and briefly describes them. After a command is sent the 209925xx sends a return “>” indicating the command has been received and executed.
General Command Format - The general command format is {aaCND...}, where:
{ = start byte
aa = address (RS-485 only option -Q)
C = 1 character, either C (command) or S (status)
N = 1-digit command or status number, 1 through 9
D = 1 character or more of data (depends on command)
} = stop byte
*
PLEASE NOTE: The two character {aa}(00-31) prefix, in the table below,
should be used ONLY when RS-485, (option Q) is selected.
Table 1.2 2099-25xx Commands
Command
Syntax*
Description
Set Operating Mode
{aaC1x}**
where x = 1 ASCII character (range 0 to 4) where:
• 0 = Internal Reference
• 1 = External Pass
• 2 = External Pass Auto
• 3 = External Lock
• 4 = External Lock Auto
Set Output Level
{aaC2xxx}
where xxx = 2 or 3 characters
• Range: -10 to 13 (-10 to +13 dBm)
Set Pass-Through Gain
{aaC3xxx}**
where xxx = 2 or 3 characters
• Range: -10 to 10 (-10 to +10 dB)
Set External Reference Frequency
{aaC4xx}**
where xx = 1 or 2 characters
• Only valid values are 1, 5, 10, or 25 (MHz)
Clear FAULT (EXT LOCK AUTO Mode)
{aaC5x}**
where x = 1 to clear FAULT
Frequency Offset Adjust
{aaC8xxxxx}
where xxxxx = 4 or 5 characters
Range: -2000 to 2000
Enable Remote
#
Just # sign
Disable Remote
{aaCR0}
{CR and zero}
** ONLY used for units WITH option E.
2099-25xx Manual_A
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07/25/11
2.0 Installation
2.1 Mechanical
The 2099-25xx consists of one RF PCB housed in a 1 RU (1 3/4 inch high) by 12 inch deep chassis. Redundant
switching, ±12, +24, +5 VDC power supplies provides power for the assemblies. The 2099-25xx can be
secured to a rack using the 4 holes on the front panel. Figure 2.0 shows how the 2099-25xx is assembled.
POWER
SUPPLY
POWER
SUPPLY
FIGURE 2.0
2099-25xx Manual_A
2099-25xx Mechanical Assembly
Page 7
07/25/11
2.2 Rear Panel Output Signals - Figure 2.1 shows the input and output connectors on the rear panel.
AC2 - POWER IN
AC input for switching
power supply #2.
100-240 ±10% VAC, 47-60 Hz.
AC1
J19 - MONITOR AND CONTROL
DB9 female connector.
See Table 2.1.
AC2
MONITOR
AND
CONTROL
GND
5
4
9
3 2
8 7
EXT REF
INPUT
1
6
J19
AC1 - POWER IN
AC input for switching
power supply #1.
100-240 ±10% VAC, 47-60 Hz.
J1 to J12 - REFERENCE OUTPUTS
The frequency reference outputs.
-7 to +13 dBm; BNC, female connectors.
4, 8, or 12, 10 MHz reference outputs.
J13
J13 - EXTERNAL REFERENCE INPUT (option -E)
External frequency reference input
+3 dBm ± 3 dB, BNC, female connector.
REFERENCE OUTPUTS
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
FIGURE 2.1 2099-25xx Rear Panel Outputs
5 4
9
3
8
2
1
7 6
TABLE 2.1 J11
J11 Pinouts (DB9)
Pin
2099-25xx Manual_A
Function
1
Rx-
2
Rx+ (RS-232C)
3
Tx+ (RS-232C)
4
Tx-
5
GND
6
Alarm Relay: Common
7
Alarm Relay: Open=ALARM
8
Not Used
9
Alarm Relay: Closed=ALARM
Page 8
07/25/11
2.3 Front Panel Indicators -The following are the front panel indicators.
DS6 - ALARM LED
Red LED indicates an
alarm condition.
DS4 - OVEN WARM-UP LED
Yellow LED indicates OCXO
oven is still warming up.
S3 - MENU/EXECUTE BUTTON
Press this to get into Program mode
and to execute any changes.
DS2 - PS1 POWER LED
Green LED indicates
presence of DC power
from power supply #1.
DS1 - PS2 POWER LED
Green LED indicates
presence of DC power
from power supply #2.
MONITOR
MENU
INTERNAL
LEVEL = +10 dBm
POWER
1
2
EXECUTE
ALARM
OVEN REMOTE
DS3 - REMOTE LED
Yellow LED indicates
remote operation.
S1 - HORIZ. TOGGLE
Horizontal toggle switch that
controls which values are being
adjusted. Does not function in the
normal display mode
FIGURE 2.2
2099-25xx Manual_A
S2 - VERT. TOGGLE
Vertical toggle switch that controls
values in the Menu items when in
program mode. Does not function in
the normal display mode
LCD DISPLAY
Display shows current
mode and output level
in dBm or gain in dB
J14 - MONITOR
An output to monitor the
reference frequency outputs.
BNC, female
2099-25xx Front Panel Controls and Indicators
Page 9
07/25/11
2.4 Installation / Operation
2.4.1 Installing and Operating the 2099-25xx 10MHz Frequency Source
1. Connect 100-240 ±10% VAC, 47-63 Hz to AC1 and AC2 connectors (Figure 2.1).
2. Be sure DS1 and DS2 LEDs (green, POWER) are on (Figure 2.2).
3. Be sure DS6 (red, ALARM) is off and/or contact closure at DB9 ALARM connector, J19,
to occur to insure that the unit is not in an alarm condition.
4. Wait for DS4 LED (yellow, OVEN) to go off to insure that the oscillator oven is stabilized.
5. (option -E only) Choose one of the five (5) modes (Internal, Ext Pass, Ext Pass Auto, Ext Lock,
or Ext Lock Auto) in which to operate the unit.
6. Set desired internal reference output level or pass-through gain, if applicable (option -E only).
7. Connect J1 thru J4 (REFERENCE OUTPUTS) to desired equipment (Figure 2.1).
8. Monitor reference output signal with J14 (MONITOR) (Figure 2.2).
9. AC FUSE - The fuse is a 5 mm X 20 mm, 2 amp slow blow (Type T) and is inserted in the
far slot in the drawer below the AC input as shown in Figure 2.3. There is a spare fuse in the near slot.
If a fuse continues to open, the power supply is most likely defective.
FUSE DRAWER
SPARE FUSE
AC Fuse - 2 amp slow blow (Type T),
5 mm X 20 mm
INPUT
~
~
100-240± 10%VAC
47-63 Hz
2A MAX
FIGURE 2.3
2099-25xx Manual_A
FUSE
TYPE T 2A GDC
250 VOLT
FOR 100 - 240 V~
Fuse Location and Spare Fuse
Page 10
07/25/11
2.5 Menu Settings
2.5.1 Functions - This section describes operation of the front panel controls. There are three operator
switches, the LCD display and alarm indicator LEDs. All functions for the equipment are controlled by these
components. The functions are (see Figure 2.4):
Power Up
Normal Display
Menu 1 Mode Select (Int, Ext Pass, Ext Pass Auto, Ext Lock, Ext Lock Auto) - option -E only
Menu 2 Level Adjust (from -10 to +13 dBm) for Internal and Lock modes OR
Menu 2 Gain Adjust (from -10 to +10 dB) for all Pass modes - option -E only
Menu 3 Reference Frequency Offset
Menu 4 Set Unit to Remote Operation
Menu 5 Select Remote Mode (RS232, RS422, or RS485)
Menu 6 Set RS-485 address
Save Menu When “R” is selected from any above menu or at the end
Alarm indications appear on the LED (see Figure 2.2).
All program changes must start with the operation of the Menu/Execute switch and must also end with the
operation of the Menu/Execute switch verified by the “SAVE SETTINGS?” Menu. If this sequence is not
followed, none of the changes will take effect. No program changes will be evident until they are verified at the
“SAVE SETTINGS?” Menu.
2.5.2 Power-On Settings
NOTE: THE LAST STATUS OF A UNIT IS RETAINED EVEN WHEN POWER IS REMOVED.
WHEN POWER IS RESTORED, THE UNIT WILL RETURN TO IT'S PREVIOUS SETTINGS.
When power is first applied, the LCD display goes through three steps.
1. The LCD goes black to show all segments are functioning.
2. The software version will be displayed.
REV 1.00
3. The present mode and output (or gain) level is shown.
INTERNAL
LEVEL = +10 dBm
The unit is now operational and ready for any changes the operator may desire.
2099-25xx Manual_A
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07/25/11
2.5.3 Control Switches
1. Menu/Execute - Any change to the programming of the unit must be initiated by pressing the
Menu/Execute switch and completed by pressing the Menu/Execute switch.
2. Horizontal Switch - This switch is mounted so its movement is horizontal and moves the cursor left or
right.
3. Vertical Switch - This switch is mounted so its movement is vertical and will toggle settings such as
ON/OFF and RS232/422/485. In the case of the LEVEL setting, the vertical switch will increase or
decrease the digit that is selected (within the limits of operation).
ON POWER UP
REV 1.00
Power Up
NORMAL DISPLAY
INTERNAL
LEVEL = +10 dBm
Normal Display
PUSH BUTTON
PUSHING MENU/EXECUTE SEQUENCE
Menu 1 Mode Select
(option -E only)
SOURCE =
R
Menu 2 Level Adjust
(from -10 to +13 dBm)
OR
Menu 2 Gain Adjust (from -10 to
+10 dB) (option-E only)
LEVEL = +10 dBm
Menu 3 Reference Frequency
Offset
INT FREQ ADJUST
Offset = +0000
R
Menu 4 Set Unit to
Remote Operation
REMOTE
R
Menu 5 Select Remote Mode
RS 232
INTERNAL
SCROLL <>
SCROLL
R
SCROLL <>
SCROLL
GAIN = +00 dB
R
Save? When “R” is selected from
any above menu or at the end
Figure 2.4
2099-25xx Manual_A
SAVE SETTINGS?
R
Y N
PUSH BUTTON
SCROLL <>
SCROLL
ADDRESS = 00
PUSH BUTTON
SCROLL <>
SCROLL
Menu 6 Set RS-485 Address
PUSH BUTTON
SCROLL <>
SCROLL
R
PUSH BUTTON
SCROLL <>
SCROLL
OFF
PUSH BUTTON
PUSH BUTTON
SCROLL <>
SCROLL
PUSH BUTTON
SCROLL <>
PUSH BUTTON
Menu Display and Sequence
Page 12
07/25/11
3.0 Environmental Use Information
A. Rack-Mounting - To mount this equipment in a rack, please refer to the installation instructions
located in the user manual furnished by the manufacturer of your equipment rack.
B. Mechanical Loading - Mounting of equipment in a rack should be such that a hazardous condition
does not exist due to uneven weight distribution.
C. Elevated Operating Ambient Temperature - If installed in a closed or multi-unit rack assembly,
the operating ambient temperature of the rack may be greater than room ambient temperature.
Therefore, consideration should be given to Tmra.
D. Reduced Air Flow - Installation of the equipment in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised. Additional space between unit
may be required.
E. Circuit Overloading - Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of circuits could have on over current protection and supply wiring.
Appropriate consideration of equipment name plate rating should be used, when addressing this concern.
F. Reliable Earthing - Reliable earthing of rack-mounted equipment should be maintained.
Particular attention should be given to supply connections other than direct connection to the
Branch (use of power strips).
G. Top Cover - There are no serviceable parts inside the product so, the Top Cover should not be removed.
If the Top Cover is removed the ground strap and associated screw MUST BE REINSTALLED
prior to Top Cover screw replacement. FAILURE TO DO this may cause INGRESS and/or EGRESS
emission problems.
2099-25xx Manual_A
Page 13
07/25/11
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
(770) 886-8005
FAX (770) 886-7964
Toll Free 888-900-5588
WEB: www.crosstechnologies.com
E-MAIL: [email protected]
Printed in USA
2099-25xx Manual_A
Page 14
07/25/11