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MDS 4710/9710 Series
(Including MDS 4710A/C and MDS 9710 A/C)
400 MHz/900 MHz
Remote Data Transceiver
MDS 05-3305A01, Rev. B
SEPTEMBER 2000
QUICK START GUIDE
TION” on page 9 of this guide.
1.
Install and connect the antenna system to the radio
• Use good quality, low loss coaxial cable. Keep the feedline as short as possible.
• Preset directional antennas in the direction of desired transmission.
2.
Connect the data equipment to the radio’s INTERFACE connector
• Connection to the radio must be made with a DB-25 Male connector. Connections for typical systems are shown below.
• Connect only the required pins. Do not use a straight-through RS-232 cable with all pins wired.
• Verify the data equipment is configured as DTE. (By default, the radio is configured as DCE.)
RXD
RTS
RTU (DTE)
CTS
DSR
GND
DCD
DB-25 to DB-25 Example
GND
DB-25
1
TXD 2
DB-25
1
GND
2 TXD
3
5
6
3
4
8
6
7
8
RXD
RTS
CTS
DSR
GND
DCD
As required for application
TXD
RTU (DTE)
GN
D
DSR
RTS
CTS
DB-9 to DB-25 Example
DCD
DB-9
1
RXD 2
DB-25
8
DCD
3 RXD
3
5
2
7
8
6
4
5
TXD
GN
DSR
RTS
CTS
As required for application
3.
Apply DC power to the radio (10.5–16 Vdc @ 2.5 A minimum)
• Observe proper polarity. The red wire is the positive lead; the black is negative.
4.
Set the radio’s basic configuration with a Hand-Held Terminal (HHT)
• Set the transmit frequency (
TX xxx.xxxx
).
• Set the receive frequency (
RX xxx.xxxx
).
• Set the baud rate/data interface parameters as follows. Use the
BAUD xxxxx abc
command, where
xxxxx
equals the data speed (110–38400 bps) and
abc
equals the communication parameters as follows:
a
= Data bits (7 or 8)
b
= Parity (N for None, O for Odd, E for Even
c
= Stop bits (1 or 2)
(Example:
BAUD 9600 8N1
)
NOTE: 7N1, 8E2 and 8O2 are invalid parameters and are not supported by the transceiver.
5.
Verify proper operation by observing the LED display
• Refer to Table 5 on page 16 for a description of the status LEDs.
• Refine directional antenna headings for maximum receive signal strength using the
RSSI
command.
TABLE OF CONTENTS
MDS 05-3305A01, Rev. B
1.0 GENERAL.................................................................................... 1
1.1 Introduction ...................................................................................... 1
1.2 Applications ...................................................................................... 2
Point-to-Multipoint, Multiple Address Systems (MAS) ........................ 2
Point-to-Point System ......................................................................... 3
Continuously Keyed versus Switched Carrier Operation .................... 3
Single Frequency (Simplex) Operation ............................................... 3
1.3 Model Number Codes ...................................................................... 3
1.4 Accessories ...................................................................................... 4
2.0 GLOSSARY OF TERMS.............................................................. 6
3.0 INSTALLATION ............................................................................ 9
3.1 Installation Steps .............................................................................. 9
3.2 Transceiver Mounting ..................................................................... 11
3.3 Antennas and Feedlines ................................................................ 11
Feedlines .......................................................................................... 12
3.4 Power Connection .......................................................................... 13
3.5 Data Interface Connections ............................................................ 13
3.6 Using the Radio’s Sleep Mode ....................................................... 13
System Example............................................................................... 13
4.0 OPERATION .............................................................................. 15
4.1 LED Indicators ................................................................................ 16
4.2 RSSI Measurement ........................................................................ 16
5.0 TRANSCEIVER PROGRAMMING ............................................ 17
5.1 Hand-Held Terminal Connection & Startup .................................... 17
5.2 Hand-Held Terminal Setup ............................................................. 18
5.3 Keyboard Commands ..................................................................... 19
Entering Commands......................................................................... 19
Error Messages ................................................................................ 19
5.4 Detailed Command Descriptions ................................................... 22
AMASK [0000 0000–FFFF FFFF] .................................................... 22
ASENSE [HI/LO]............................................................................... 23
BAUD [xxxxx abc] ............................................................................. 23
BUFF [ON, OFF]............................................................................... 24
CKEY [ON–OFF] .............................................................................. 24
CTS [0–255] ..................................................................................... 24
DATAKEY [ON, OFF] ........................................................................ 24
DEVICE [DCE, CTS KEY] ................................................................ 25
DKEY................................................................................................ 25
DLINK [ON/OFF/xxxx] ...................................................................... 25
MDS 4710/9710 I/O Guide i
ii
DMGAP [xx]...................................................................................... 25
DTYPE [NODE/ROOT] ..................................................................... 26
DUMP ............................................................................................... 26
HREV................................................................................................ 26
INIT................................................................................................... 26
INIT [4710/9710]............................................................................... 26
INIT [4720/9720]............................................................................... 27
KEY .................................................................................................. 27
MODEL............................................................................................. 27
MODEM [xxxx, NONE] ..................................................................... 27
OWM [XXX...] ................................................................................... 27
OWN [XXX...].................................................................................... 27
PTT [0–255]...................................................................................... 27
PWR [20–37] .................................................................................... 27
RSSI ................................................................................................. 28
RTU [ON/OFF/0-80].......................................................................... 28
RX [xxx.xxxx] .................................................................................... 28
RXTOT [NONE, 1-255] ..................................................................... 28
SCD [0-255]...................................................................................... 29
SER .................................................................................................. 29
SHOW [DC, PORT, PWR]................................................................. 29
SNR .................................................................................................. 29
SREV................................................................................................ 29
STAT ................................................................................................. 29
TEMP................................................................................................ 30
TOT [1-255, ON, OFF] ...................................................................... 30
TX [xxx.xxxx] .................................................................................... 30
UNIT [10000...65000] ....................................................................... 30
6.0 TROUBLESHOOTING ............................................................... 30
6.1 LED Indicators ................................................................................ 31
6.2 Event Codes ................................................................................... 31
Checking for Alarms—STAT command............................................. 31
Major Alarms vs. Minor Alarms......................................................... 32
Event Code Definitions ..................................................................... 32
7.0 TECHNICAL REFERENCE ....................................................... 33
7.1 MDS 4710/9710 Transceiver Specifications ................................... 33
7.2 Helical Filter Adjustment ................................................................ 36
7.3 Performing Network-Wide Remote Diagnostics ............................. 37
7.4 Upgrading the Radio’s Software ..................................................... 38
7.5 dBm-Watts-Volts Conversion Chart ................................................ 40
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
RF Exposure
Copyright Notice
This Installation and Operation Guide and all software described herein are protected by
copyright: 2000 Microwave Data Systems Inc
. All rights reserved.
Microwave Data Systems Inc. reserves its right to correct any errors and omissions in this publication.
Operational Safety Notices
The radio equipment described in this guide emits radio frequency energy. Although the power level is low, the concentrated energy from a directional antenna may pose a health hazard. Do not allow people to come closer than 5 meters to the front of the antenna when the transmitter is operating.
This manual is intended to guide a professional installer to install, operate and perform basic system maintenance on the described radio.
ISO 9001 Registration
Microwave Data Systems' adheres to this internationally accepted quality system standard.
MDS Quality Policy Statement
We, the employees of Microwave Data Systems Inc., are committed to achieving total customer satisfaction in everything we do.
Total Customer Satisfaction in:
• Conception, design, manufacture and marketing of our products.
• Services and support we provide to our internal and external customers.
Total Customer Satisfaction Achieved Through:
• Processes that are well documented and minimize variations.
• Partnering with suppliers who are committed to providing quality and service.
• Measuring our performance against customer expectations and industry leaders.
• Commitment to continuous improvement and employee involvement.
FM/UL/CSA Notice
This product is available for use in Class I, Division 2, Groups A, B,
C & D Hazardous Locations. Such locations are defined in Article 500 of the National Fire Protection Association (NFPA) publication NFPA
70, otherwise known as the National Electrical Code.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide iii
iv
The transceiver has been recognized for use in these hazardous locations by three independent agencies —Underwriters Laboratories (UL), Factory Mutual Research Corporation (FMRC) and the Canadian Standards
Association (CSA). The UL certification for the transceiver is as a Recognized Component for use in these hazardous locations, in accordance with UL Standard 1604. The FMRC Approval is in accordance with
FMRC Standard 3611. The CSA Certification is in accordance with
CSA STD C22.2 No. 213-M1987.
FM/UL/CSA Conditions of Approval:
The transceiver is not acceptable as a stand-alone unit for use in the hazardous locations described above. It must either be mounted within another piece of equipment which is certified for hazardous locations, or installed within guidelines, or conditions of approval, as set forth by the approving agencies. These conditions of approval are as follows:
1. The transceiver must be mounted within a separate enclosure which is suitable for the intended application.
2. The antenna feedline, DC power cable and interface cable must be routed through conduit in accordance with the National Electrical
Code.
3. Installation, operation and maintenance of the transceiver should be in accordance with the transceiver's installation manual, and the
National Electrical Code.
4. Tampering or replacement with non-factory components may adversely affect the safe use of the transceiver in hazardous locations, and may void the approval.
5. When installed in a Class I, Div. 2, Groups A, B, C or D hazardous location, observe the following:
WARNING —EXPLOSION HAZARD—
Do not disconnect equipment unless power has been switched off or the area is known to be non-hazardous.
Refer to Articles 500 through 502 of the National Electrical Code
(NFPA 70) for further information on hazardous locations and approved
Division 2 wiring methods.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Revision Notice
While every reasonable effort has been made to ensure the accuracy of this manual, product improvements may result in minor differences between the manual and the product shipped to you. If you have additional questions or need an exact specification for a product, please contact our Customer Service Team using the information at the back of this guide. In addition, manual updates can often be found on the MDS Web site at www.microwavedata.com.
Distress Beacon Warning
In the U.S.A., the 406 to 406.1 MHz band is reserved for use by distress beacons. Since the radio described in this manual is capable of transmitting in this band, take precautions to prevent the radio from transmitting between 406 to 406.1 MHz in U.S. applications.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide v
vi MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
MDS 05-3305A01, Rev. B
1.0
GENERAL
1.1 Introduction
This guide presents installation and operating instructions for the MDS
4710/9710 Series (400/900 MHz) digital radio transceivers.
These transceivers (Figure 1) are data telemetry radios designed to
operate in a point-to-multipoint environment, such as electric utility
Supervisory Control and Data Acquisition (SCADA) and distribution automation, gas field automation, water and wastewater SCADA, and on-line transaction processing applications. They use microprocessor control and Digital Signal Processing (DSP) technology to provide highly reliable communications even under adverse conditions.
Modulation and demodulation is accomplished using Digital Signal Processing (DSP). DSP adapts to differences between components from unit to unit, and ensures consistent and repeatable performance in ambient temperatures from –30 to +60 degrees Centigrade. The use of
Digital Signal Processing eliminates the fluctuations and variations in modem operation that degrade operation of analog circuits.
The transceiver is designed for trouble-free operation with data equipment provided by other manufacturers, including Remote Terminal
Units (RTUs), flow computers, lottery terminals, automatic teller machines, programmable logic controllers, and others.
NOTE:
Some features may not be available on all radios, based on the options purchased and based on the applicable regulatory constraints for the region in which the radio will operate.
Invisible place holder
SERIAL NUMBER
LABEL
LED INDICATORS (4)
EXTERNAL
INTERFACE
CONNECTOR
(DB-25)
DIAGNOSTICS
CONNECTOR (RJ-11)
13.8 VDC POWER
CONNECTOR
ANTENNA CONNECTOR
(TYPE “N”)
Figure 1. Transceiver Connectors and Indicators
MDS 4710/9710 I/O Guide 1
2
1.2 Applications
Point-to-Multipoint, Multiple Address Systems (MAS)
This is the most common application of the transceiver. It consists of a central master station and several associated remote units as shown in
Figure 2. An MAS network provides communications between a central
host computer and remote terminal units (RTUs) or other data collection devices. The operation of the radio system is transparent to the computer equipment.
Often, however, a radio system consists of many widely separated remote radios. A point-to-multipoint or SCADA (Supervisory Control and Data Acquisition) system may be a new installation for automatic, remote monitoring of gas wells, water tank levels, electric power distribution system control and measurement, etc.
The radio system may replace a network of remote monitors currently linked to a central location via leased telephone line. At the central office of such a system, there is usually a large mainframe computer and some means of switching between individual lines coming from each remote monitor. In this type of system, there is a modulator/demodulator
(modem) at the main computer, and at each remote site, usually built into the remote monitor itself. Since the cost of leasing a dedicated-pair phone line is quite high, a desirable alternative may be replacing the phone line with a radio path.
RTU
REMOTE RADIO
SWC OFF
Invisible place holder
REMOTE RADIO
SWC OFF
RTU
13.8
+
VDC
RTU
13.8 +
VDC
RTU
REMOTE RADIO
SWC OFF
13.8
+
VDC
CONTINUOUSLY
KEYED
RTU
13.8
+
VDC
REMOTE RADIO
SWC OFF
VDC
REMOTE RADIO
SWC OFF
HOST SYSTEM
MDS MASTER
STATION
Figure 2. Typical MAS Point-to-Multipoint Network
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Point-to-Point System
Where permitted, the transceiver may also be used in a point-to-point arrangement.
A point-to-point system consists of just two radios—one
serving as a master and the other as a remote—as shown in Figure 3. It
provides a simplex or half-duplex communications link for the transfer of data between two locations.
Invisible place holder
HOST
COMPUTER
MASTER
RTU
REMOTE
Figure 3. Typical Point-to-Point Link
Continuously Keyed versus Switched Carrier Operation
The keying behavior of the master station can be used to describe an
MAS system.
Continuously Keyed
operation means the master station transmitter is always keyed and an RF carrier is always present, even when there is no data to send. The master station is always simultaneously transmitting and continuously listening. Different frequencies must be used for transmit and receive. This is the method used in many MAS systems,
and is shown in Figure 2. This is useful for high-speed polling applica-
tions.
NOTE:
4710/9710 remotes do not support full-duplex operation.
Switched Carrier
operation is a half-duplex mode of operation where the master station transmitter is keyed to send data and unkeyed to receive.
Single Frequency (Simplex) Operation
Single frequency operation (also known as simplex) is a special case of switched carrier operation. Single frequency operation is automatically selected whenever the transmit and receive frequencies are set to the same value. Note that data turn-around times are increased when a single frequency configuration is used.
MDS 05-3305A01, Rev. B
1.3 Model Number Codes
The radio model number is printed on the end of the radio enclosure, and provides key information about how the radio was configured when it
was shipped from the factory. See Figure 4 and Figure 5 for an explana-
tion of the model number characters.
MDS 4710/9710 I/O Guide 3
THIS INFORMATION IS
SUBJECT TO
CHANGE.
DO NOT USE FOR
PRODUCT ORDERING.
THIS INFORMATION IS
SUBJECT TO
CHANGE.
DO NOT USE FOR
PRODUCT ORDERING.
Invisible place holder
INPUT VOLTAGE
1= 10.5 to 16 VDC
OPERATION
X= Base/Remote
RECEIVE FREQUENCY
(A) 380-400 MHz*
(B) 400-420 MHz
(C) 420-450 MHz
(D) 450-480 MHz
(E) 480-512 MHz
(L4) 406-430 MHz**
DIAGNOSTICS
0= NONE
1= Non-Intrusive
TRANSMIT FREQUENCY
(1) 380-400 MHz
(2) 400-420 MHz
(3) 420-450 MHz
(4) 450-480 MHz**
(L4) 406-430 MHz
SAFETY
AGENCY
N= N/A
N= N/A
(F) CSA/FM/UL
F= FCC/IC
4710A/C
MODEM
MODE
B= 9600 BPS
C= 19200 (25kHz)
N= Non-redundant
BANDWIDTH
1= 12.5 KHz
FEATURES
0= Full
2= 25 KHz (19.2 Kbps)
MOUNTING BRACKETS
A= Standard
B= None
*Not Available with FCC or IC
** Only available with RX option
Figure 4. 4710 Model Number Codes
Invisible place holder
INPUT VOLTAGE
1= 10.5 to 16 VDC
OPERATION
X= Base/Remote
DIAGNOSTICS
0= NONE
1= Non-Intrusive
RECEIVE FREQUENCY
(A) 800-860 MHz*
(B) 860-900 MHz
(C) 900-960 MHz
TRANSMIT FREQUENCY
(1) 800-880 MHz
(2) 880-960 MHz
AGENCY
N= N/A
F= FCC/IC
SAFETY
N= N/A
(F) CSA/FM/UL
9710A/C
MODEM
MODE
B= 9600 BPS
C= 19200 (25kHz)
N= Non-redundant
BANDWIDTH
1= 12.5 KHz
FEATURES
0= Full
2= 25 KHz (19.2 Kbps)
MOUNTING BRACKETS
A= Standard
B= None
*Not Available with FCC or IC
Figure 5. 9710 Model Number Codes
1.4 Accessories
The transceiver can be used with one or more of the accessories listed in
Table 1. Contact Microwave Data Systems for ordering information.
4 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Table 1. MDS 4710/9710 Optional Accessories
Accessory
Hand-Held Terminal
Kit (HHT)
RTU Simulator
Order Wire Module
Description
Terminal that plugs into the radio for programming, diagnostics & control.
Includes carrying case and cable set.
Test unit that simulates data from a remote terminal unit. Comes with polling software that runs on a PC.
Useful for testing radio operation.
External device that allows temporary voice communication. Useful during setup & testing of the radio system.
MDS P/N
02-1501A01
03-2512A01
02-1297A01
Order Wire Handset
RJ-11 to DB-9 adapter
Used with Order Wire Module (above).
12-1307A01
Used to connect a PC to the radio’s
DIAG. port
03-3246A01
EIA-232 to EIA-422
Converter Assembly
Radio Configuration
Software
External adapter plug that converts the radio’s DATA INTERFACE connector to EIA-422 compatible signaling.
Provides diagnostics of the transceiver
(Windows-based PC required.)
03-2358A01
03-3156A01
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 5
6
2.0
GLOSSARY OF TERMS
If you are new to digital radio systems, some of the terms used in this guide may be unfamiliar. The following glossary explains many of these terms and will prove helpful in understanding the operation of the transceiver.
Active Messaging
—This is a mode of diagnostic gathering that may interrupt SCADA system polling communications (contrast with
passive messaging
). Active (or intrusive) messaging is much faster than passive messaging because it is not dependent upon the RTU polling cycle.
Antenna System Gain
—A figure, normally expressed in dB, representing the power increase resulting from the use of a gain-type antenna.
System losses (from the feedline and coaxial connectors, for example) are subtracted from this figure to calculate the total antenna system gain.
Bit
—The smallest unit of digital data, often represented by a one or a zero. Eight bits (plus start, stop, and parity bits) usually comprise a byte.
Bits-per-second
—See
BPS
.
BPS
—Bits-per-second. A measure of the information transfer rate of digital data across a communication channel.
Byte
—A string of digital data usually made up of eight data bits and start, stop and parity bits.
Decibel (dB)—A measure computed from the ratio between two signal levels. Frequently used to express the gain (or loss) of a system.
Data Circuit-terminating Equipment—See DCE.
Data Communications Equipment—See DCE.
Data Terminal Equipment—See DTE.
dBi—Decibels referenced to an “ideal” isotropic radiator in free space.
Frequently used to express antenna gain.
dBm—Decibels referenced to one milliwatt. An absolute unit used to measure signal power, as in transmitter power output, or received signal strength.
DCE—Data Circuit-terminating Equipment (or Data Communications
Equipment). In data communications terminology, this is the “modem” side of a computer-to-modem connection. The MDS 4710/9710 is a
DCE device.
Digital Signal Processing—See DSP.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
DSP—Digital Signal Processing. In the MDS 4710/9710 transceiver, the DSP circuitry is responsible for the most critical real-time tasks; primarily modulation, demodulation, and servicing of the data port.
DTE—Data Terminal Equipment. A device that provides data in the form of digital signals at its output. Connects to the DCE device.
Equalization—The process of reducing the effects of amplitude, frequency or phase distortion with compensating networks.
Fade Margin—The greatest tolerable reduction in average received signal strength that will be anticipated under most conditions. Provides an allowance for reduced signal strength due to multipath, slight antenna movement or changing atmospheric losses. A fade margin of 20 to 30 dB is usually sufficient in most systems.
Frame—A segment of data that adheres to a specific data protocol and contains definite start and end points. It provides a method of synchronizing transmissions.
Hardware Flow Control—A transceiver feature used to prevent data buffer overruns when handling high-speed data from the RTU or PLC.
When the buffer approaches overflow, the radio drops the clear-to-send
(CTS) line, which instructs the RTU or PLC to delay further transmission until CTS again returns to the high state.
Host Computer—The computer installed at the master station site, which controls the collection of data from one or more remote sites.
Intrusive Diagnostics—A mode of remote diagnostics that queries and commands radios in a network with an impact on the delivery of the system “payload” data. See Active messaging.
Latency—The delay (usually expressed in milliseconds) between when data is applied to TXD (Pin 2) at one radio, until it appears at RXD
(Pin 3) at the other radio.
MAS—Multiple Address System. A radio system where a central master station communicates with several remote stations for the purpose of gathering telemetry data.
Master (Station)—Radio which is connected to the host computer. It is the point at which polling enters the network.
MCU—Microcontroller Unit. This is the processor responsible for controlling system start-up, synthesizer loading, and key-up control.
Microcontroller Unit—See MCU.
MDS 05-3305A01, Rev. B
Multiple Address System—See MAS.
MDS 4710/9710 I/O Guide 7
8
Network-Wide Diagnostics—An advanced method of controlling and interrogating MDS radios in a radio network.
Non-intrusive diagnostics—See Passive messaging.
Passive messaging—This is a mode of diagnostic gathering that does not interrupt SCADA system polling communications. Diagnostic data is collected non-intrusively over a period of time; polling messages are carried with SCADA system data (contrast with active messaging).
Payload data—This is the application’s user communication data which is sent over the radio network. It is the transfer of payload data that is the primary purpose of the radio communications network.
Point-Multipoint System—A radio communications network or system designed with a central control station that exchanges data with a number of remote locations equipped with terminal equipment.
Poll—A request for data issued from the host computer (or master PLC) to a remote radio.
PLC—Programmable Logic Controller. A dedicated microprocessor configured for a specific application with discrete inputs and outputs. It can serve as a host or as an RTU.
Programmable Logic Controller—See PLC.
Remote (Station)—A radio in a network that communicates with an associated master station.
Remote Terminal Unit—See RTU.
Redundant Operation—A station arrangement where two transceivers and two power supplies are available for operation, with automatic switchover in case of a failure.
RTU—Remote Terminal Unit. A data collection device installed at a remote radio site. An internal RTU simulator is provided with
4710/9710 radios to isolate faults to either the external RTU or the radio.
SCADA—Supervisory Control And Data Acquisition. An overall term for the functions commonly provided through an MAS radio system.
Standing Wave Ratio—See SWR.
Supervisory Control And Data Acquisition—See SCADA.
SWR—Standing Wave Ratio. A parameter related to the ratio between forward transmitter power and the reflected power from the antenna system. As a general guideline, reflected power should not exceed 10% of the forward power (
≈
2:1 SWR).
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
3.0
INSTALLATION
There are three main requirements for installing the transceiver—adequate and stable primary power, a good antenna system, and the correct
data connections between the transceiver and the data device. Figure 6
shows a typical remote station arrangement.
Invisible place holder
REMOTE TERMINAL
UNIT
ANTENNA SYSTEM
RADIO
TRANSCEIVER
13.8 VDC
POWER
CABLE
LOW-LOSS FEEDLINE
13.8 VDC
2.5 A (Minimum)
POWER SUPPLY
Figure 6. Typical Remote Station Arrangement
3.1 Installation Steps
Below are the basic steps for installing the transceiver. In most cases, these steps alone are sufficient to complete the installation. More detailed explanations appear at the end of these steps.
1. Mount the transceiver to a stable surface using the brackets supplied with the radio.
2. Install the antenna and antenna feedline for the station. Preset directional antennas in the desired direction.
MDS 05-3305A01, Rev. B
3. Connect the data equipment to the transceiver’s
DATA INTERFACE connector. Use only the required pins for the application—Do not use a fully pinned (25 conductor) cable. Basic applications may require only the use of Pin 2 (transmit data—TXD), Pin 3 (Received
Data—RXD) and Pin 7 (signal ground). The radio can be keyed
MDS 4710/9710 I/O Guide 9
with the use of the
DATAKEY
command.
Additional connections may be required for some installations.
Refer to the complete list of pin functions provided in Table 4 on page 14.
4. Measure and install the primary power for the radio. The red wire on the power cable is the positive lead; the black is negative.
NOTE:
Use the radio in negative ground systems only.
5. Set the radio configuration. The transceiver is designed for quick installation with a minimum of software configuration required in most cases. The selections that must be made for new installations are:
• Transmit frequency
• Receive frequency
The operating frequencies are not set at the factory unless they were specified at the time of order. Determine the transmit and receive frequencies to be used, and follow the steps below to program them.
6. Connect a hand-held terminal (HHT) to the
DIAG.
connector. When the HHT beeps, press
ENTER
to receive the ready “>” prompt.
a. Set the operating frequencies using the
TX xxx.xxxx
(transmit) and
RX xxx.xxxx
(receive) commands.
Press
ENTER
after each command. After programming, the HHT reads
PROGRAMMED OK
to indicate successful entry.
10 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
3.2 Transceiver Mounting
Figure 7 shows the mounting dimensions of the transceiver.
Invisible place holder
ALTERNATE
POSITION
A
A
A
A
A
A
A
A
A
A
6.63"
168 mm
8.5"
216 mm
5.625"
143 mm
3.3 Antennas and Feedlines
Antennas
The transceiver can be used with a number of antennas. The exact style depends on the physical size and layout of the radio system. A direc-
tional Yagi (Figure 8) or corner reflector antenna is generally recom-
mended at remote sites to minimize interference to and from other users.
Antennas of this type are available from several manufacturers.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 11
12
Invisible place holder
Figure 8. Typical Yagi Antenna (mounted to mast)
Feedlines
The selection of antenna feedline is very important. Poor quality cables should be avoided as they will result in power losses that may reduce the range and reliability of the radio system.
Table 2 and Table 3 show the losses that will occur when using various
lengths and types of cable at 400 and 960 MHz. Regardless of the type of cable used, it should be kept as short as possible to minimize signal loss.
Table 2. Length vs. Loss in Coaxial Cables at 400 MHz
Cable Type
RG-8A/U
1/2 inch HELIAX
7/8 inch HELIAX
1-1/4 inch HELIAX
1-5/8 inch HELIAX
10 Feet
(3.05 Meters)
0.51dB
0.12 dB
0.08 dB
0.06 dB
0.05 dB
50 Feet
(15.24 Meters)
2.53 dB
0.76 dB
0.42 dB
0.31 dB
0.26 dB
100 Feet
(30.48 Meters)
500 Feet
(152.4 Meters)
5.07 dB
1.51 dB
0.83 dB
0.62 dB
0.52 dB
25.35 dB
7.55 dB
4.15 dB
3.10 dB
2.60 dB
Table 3. Length vs. Loss in Coaxial Cables at 960 MHz
Cable Type
RG-8A/U
1/2 inch HELIAX
7/8 inch HELIAX
1-1/4 inch HELIAX
1-5/8 inch HELIAX
10 Feet
(3.05 Meters)
0.85 dB
0.23 dB
0.13 dB
0.10 dB
0.08 dB
50 Feet
(15.24 Meters)
4.27 dB
1.15 dB
0.64 dB
0.48 dB
0.40 dB
100 Feet
(30.48 Meters)
500 Feet
(152.4 Meters)
8.54 dB
2.29 dB
1.28 dB
0.95 dB
0.80 dB
42.70 dB
11.45 dB
6.40 dB
4.75 dB
4.00 dB
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
CAUTION
USE
ONLY REQUIRED
PINS
3.4 Power Connection
The transceiver can be operated from any well-filtered 10.5 to 16 Vdc power source. The power supply should be capable of providing at least
2.5 amperes of continuous current.
The red wire on the power cable is the positive lead; the black is negative.
NOTE:
The radio is designed for use only in negative ground systems.
3.5 Data Interface Connections
The transceiver’s
DATA INTERFACE
connector is used to connect the transceiver to an external DTE data terminal that supports the EIA-232
(formally RS-232) format. The transceiver supports asynchronous data rates of up to 38400 bps. The data rate at the
DATA INTERFACE
connector may differ from the data rate used over the air.
DATA INTERFACE
connector and describes its function.
Do not use a 25 wire (fully pinned) cable for connection to the
DATA
INTERFACE
connector. Use only the required pins for the application.
Damage may result if improper connections are made. Typical applications require the use of only Pins 1 through 8 for EIA-232 signaling.
3.6 Using the Radio’s Sleep Mode
In some installations, such as at solar-powered sites, it may be necessary to keep the transceiver’s power consumption to an absolute minimum.
This can be accomplished using the Sleep Mode. In this mode, power consumption is reduced to less than 16 milliamperes (nominal).
Sleep mode can be enabled under RTU control by asserting a ground (or
RS-232 low) on Pin 12 of the radio’s
DATA INTERFACE
connector.
When Pin 12 is opened (or an RS-232 high is asserted), the radio will be ready to receive data within 75 milliseconds.
All normal functions are suspended while the radio is in sleep mode. The
PWR
LED will be off, except for a quick flash every five seconds.
System Example
The following example describes Sleep Mode implementation in a typical system. Using this information, you should be able to configure a system that will meet your own particular needs.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 13
14
Sleep Mode Example:
Suppose you need communications to each remote site only once per hour. Program the RTU to raise an RS-232 line once each hour (DTR for example) and wait for a poll and response before lowering it again. Connect this line to Pin 12 of the radio’s
DATA INTERFACE
connector. This will allow each RTU to be polled once per hour with a significant savings in power consumption.
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Table 4. DATA INTERFACE Connector Pinouts
Input/
Output
--
IN
OUT
IN
OUT
OUT
--
OUT
IN
OUT
OUT
IN
--
IN
Pin Description
Protective Ground. Connects to ground (negative supply potential) on the radio’s PC board and chassis.
TXD—Transmitted Data. Accepts TX data from the connected device.
RXD—Received Data. Outputs received data to the connected device.
RTS—Request-to-Send Input. Keys the transmitter when
RTS is at logic high.
CTS—Clear-to-Send Output. Goes “high” after the programmed CTS delay time has elapsed (DCE) or keys an attached radio when RF data arrives (CTS KEY).
DSR—Data Set Ready. Provides a +6 Vdc DSR signal through a 2.5 k
Ω
resistor.
Signal Ground. Connects to ground (negative supply potential) at radio’s PC board.
DCD—Data Carrier Detect. Goes “high” when the modem detects a data carrier from the master station.
Transmit Audio Input. Connects to the audio output of an external (AFSK) modem. The input impedance is 600
Ω
.
Use Pin 7 for the modem’s return lead.
RUS—Receiver Unsquelched Sensor. Not used in most installations, but is available as a convenience. Provides
+8 Vdc through a 1 k
Ω
resistor whenever the receiver squelch is open, and drops to less than 1 Vdc when the squelch is closed.
Receive Audio Output. Connects to the audio input of an external (AFSK) modem. The output impedance is 600
Ω
, and the level is factory set to suit most installations. Use
Pin 7 for the modem’s return lead.
Radio Inhibit (Sleep). A ground on this pin places the radio into the “sleep” mode. It turns off most circuits in the radio, including transmit, receive, modem and diagnostic functions. This allows for greatly reduced power consumption, yet preserves the radio’s ability to be quickly brought online.
Do not connect—Reserved for future use.
PTT—Push to Talk. This line is used to key the radio with an active-high signal of +5 Vdc.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
16
17
18
19
20
21
22
23
24
25
Table 4. DATA INTERFACE Connector Pinouts (Continued)
Pin
Number
15
Input/
Output
--
--
OUT
Pin Description
.Remote RTU Reset. Do not connect. Reserved for future use.
IN
--
OUT
PTT—Push to Talk. This line is used to key the radio with an active-low signal of 0 Vdc.
Do not connect—Reserved for future use.
--
IN/OUT Accessory Power. Unregulated Input/Output. Provides a source of input power for low current accessories.
Excessive drain on this connection will trip self-resetting fuse F1 on the transceiver PC board. The voltage at this pin will match the input voltage to the transceiver.
OUT 9.9 Vdc Regulated Output. Provides a source of regulated voltage at 100 mA for low power accessories.
Do not connect—Reserved for future use.
RSSI—Received Signal Strength Indication. A DC voltmeter may be connected to this pin to read the relative
strength of the incoming signal. Figure 9 is a chart showing
RSSI vs. DC voltage.
--
IN
Do not connect—Reserved for future use.
Diagnostic Channel Enable. A ground on this pin causes the radio’s microcontroller to open the DB-25 DATA
INTERFACE for diagnostics and control instead of the normal RJ-11 DIAG. connection.
Do not connect—Reserved for future use.
Alarm. A logic low (less than 0.5 volts) on this pin indicates normal operation. A logic high (greater than 4 volts) indicates that some alarm condition is present. This pin can be used as an alarm output, provided the internal series resistance of 1 k
Ω
is considered.
Invisible place holder
4.0
OPERATION
In-service operation of the transceiver is completely automatic. Once the unit has been properly installed and configured, operator actions are limited to observing the front panel LED status indicators for proper operation.
If all parameters are correctly set, operation of the radio can be started by following these steps:
1. Apply DC power to the transceiver.
2. Observe the LED status panel for the proper indications (Table 5).
MDS 05-3305A01, Rev. B
3. If not done earlier, refine the antenna heading of the station to maximize the received signal strength (RSSI) from the master station.
Use the
RSSI
command from an HHT connected to the radio’s
DIAG.
MDS 4710/9710 I/O Guide 15
16
Section 4.2, RSSI Measurement (page 16).
4.1 LED Indicators
Table 5 describes the function of each status LED.
PWR DCD TXD RXD
Table 5. LED Status Indicators
LED Name Description
PWR
• Continuous—Power is applied to the radio, no problems detected.
• Rapid flash (five times per second)—Fault indication.
• Flashing once every 5 seconds—Radio is in Sleep mode.
DCD
• Flashing—Indicates the radio is receiving intermittent data frames.
• Continuous—Radio is receiving a data signal from a continuously keyed radio.
TXD
RXD
An EIA-232 mark signal is being received at the DATA INTERFACE connector.
An EIA-232 mark signal is being sent out from the DATA INTERFACE connector.
4.2 RSSI Measurement
As an alternative to using an HHT, the radio’s received signal strength
(RSSI) may be read with a DC voltmeter connected to Pin 21 of the
DATA
INTERFACE
connector. Figure 9 shows the relationship between
received signal level and the DC voltage on Pin 21 of the
DATA INTER-
FACE
connector. (Note: Readings are not accurate for incoming signal strengths above –50 dBm.)
Invisible place holder
5.0
4.5
4
3.5
3
2.5
2
–110
–90
–70 –50
SIGNAL LEVEL (dBm)
Figure 9. RSSI vs. Vdc (Typical)
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
5.0
TRANSCEIVER PROGRAMMING
Programming and control of the transceiver is performed through the radio’s RJ-11
DIAG.
(Diagnostics) connector with an MDS Hand-Held
Terminal (MDS P/N 02-1501A01). This section contains a reference
chart (Table 7) and detailed descriptions for each user command.
NOTE:
In addition to HHT control, Windows-based software is available (MDS P/N 03-3156A01) to allow diagnostics and programming using a personal computer. An installation booklet and on-line instructions are included with the software. Contact MDS for ordering information.
5.1 Hand-Held Terminal Connection & Startup
This section gives basic information for connecting and using the MDS
Hand-Held Terminal. For more information about the terminal, refer also to the instructions included with each HHT kit.
The steps below assume that the HHT has been configured for use with the transceiver (80 character screen display). If the HHT was previously used with a different model transceiver, or if its default settings have
been changed, refer to Section 5.2, Hand-Held Terminal Setup (page 18)
for setup details.
Follow these steps to connect the HHT:
1. Connect the HHT’s coiled cord to the
DIAG.
(
RJ-11
) jack on the radio
as shown in Figure 10. This automatically places the radio into the
control and programming mode.
As an alternative, the
DATA INTERFACE
(DB-25) connector may be used for programming instead of the
DIAG.
jack. With this arrangement, Pin 23 of the HHT cable must be grounded to enable the diag-
nostic channel. (See Table 4 on page 14.)
2. When the HHT is connected, it runs through a brief self-check, ending with a beep. After the beep, press ready “>” prompt.
ENTER
to receive the
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 17
18
Invisible place holder
F5
F1
A
/
F
F2
*
B
(
K
–
G
)
P
F3
+
C
1
L
#
F4
H
4
Q
,
D
2
E
3
M
7
V
R
=
I
5
J
6
N
8
W
ESC
O
9
S
0
T
X
Y
SPACE
ENTER
U
CTRL
Z
SHIFT
BKSP
13.8
+
VDC
–
ANTENNA
Figure 10. Hand-Held Terminal Connected to the Transceiver
5.2 Hand-Held Terminal Setup
The following is a set of instructions for re-initializing an HHT for use with the transceiver. These steps may be required if the HHT was previously used with a different radio, or if the HHT default settings have been inadvertently altered.
1. Plug the HHT into the
DIAG.
connector. Enable the setup mode by pressing the
SHIFT
,
CTRL
and
SPACE
keys in sequence. The display
Invisible place holder
F F F F F
1
Figure 11. HHT Setup Display
2. The first of 15 menu items is displayed. Settings are reviewed by pressing the NEXT function controlled by the
E
key. Parameter settings are changed by pressing the ROLL function controlled by the
A
key.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
3. Set up the HHT as listed in Table 6.
Table 6. HHT Operational Settings
Parameter Setting
Re-init HT NO
Baud Rate 9600
Comm bits 8,1,n
Parity Error OFF
Key Repeat OFF
Echo OFF
Shift Keys YES
Ctl Chars PROCS
Parameter
Scroll On
Setting
33rd
Cursor ON
CRLF for CR OFF
Self Test
Key Beep
FAST
ON
Screen Size 80
Menu Mode LONG
5.3 Keyboard Commands
Table 7 is a reference chart of software commands for the transceiver.
Programmable information is shown in brackets [ ] following the com-
mand name. See Section 5.4, Detailed Command Descriptions (page 22)
for detailed command descriptions.
Entering Commands
To enter a command, type the command, followed by an
ENTER
keystroke. For programming commands, the command is followed by
SPACE
and the appropriate information or values, then
ENTER
.
Here are some additional points to remember when using the HHT:
• Use the
SHIFT
key to access numbers; press again to return to letter mode.
• Use the
ESC/BKSP
key to edit information or commands entries.
• The flashing square cursor ( ) indicates that letter mode is selected.
• The flashing superscript rectangular cursor ( ) indicates that number mode is selected.
Error Messages
Listed below are some possible error messages encountered when using the HHT:
UNKNOWN COMMAND
—The command was not recognized. Refer to the command description for command usage information.
MDS 05-3305A01, Rev. B
INCORRECT ENTRY
—The command format or its associated values were not valid. Refer to the command description for command usage information.
MDS 4710/9710 I/O Guide 19
20
COMMAND FAILED
—The command was unable to successfully complete.
This is a possible internal software problem.
NOT PROGRAMMED
—Software was unable to program the internal radio memory or the requested item was not programmed.This is a serious internal radio error. Contact MDS.
TEXT TOO LONG
—Response to
OWN
or
OWM
command when too many characters have been entered. Refer to the command description for command usage information.
NOT AVAILABLE
—The entered command or parameter was valid, but it referred to a currently unavailable choice. Refer to the command description for command usage information.
ACCESS DENIED
—The command is unavailable to the user. Refer to the command descriptions for command information.
EEPROM FAILURE
— The
INIT
command was unable to write to EEPROM.
This is a serious internal radio error. Contact MDS.
Command name
Table 7. Command summary
Function
Set or display hex code identifying which events trigger an alarm.
Set or display the state of the alarm output signal to ACTIVE HI or ACTIVE LO.
Set or display the DATA INTERFACE data rate and control bits.
Enables or disables the internal radio data buffer.
Set or display the Clear-to-Send delay in seconds.
Enables or disables the continuously keyed mode. Note: Remotes cannot receive when keyed.
Toggles between key-on-data and key-on-RTS.
Dekey the radio (transmitter OFF). This is generally a radio test command.
Configures local diagnostic link protocol.
(diagnostics) Sets the amount of time to wait after the receipt of a character before interpreting the next received character as the start of a new message.
(diagnostics) Sets up a radio as a root or node radio.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
MDS 05-3305A01, Rev. B
Table 7. Command summary (Continued)
Command name
Function
Display all programmable settings.
Display the Hardware Revision level.
Set radio parameters to factory defaults.
Configure radio for use without P-20 chassis.
Restores certain transceiver defaults before using the INIT x720 command.
Configure radio for use with P-20 chassis.
Key the radio (transmitter ON). This is generally a radio test command.
Display the model number of the radio.
Set the modem characteristics of the radio.
Set or display the owner’s message.
Set or display the owner’s name.
Set or display the Push-to-Talk delay in milliseconds.
Set or display the transmit power setting.
Display the Received Signal Strength Indication.
Re-enables or disables the radio’s internal RTU simulator and sets the RTU address.
Set or display receiver frequency.
Set or display the value of the receive time-out timer.
Set or display the Soft-carrier Dekey delay in milliseconds.
Display the radio serial number.
Display the DC voltages, diagnostics port, and transmit power level.
Display the Software Revision Level.
Display radio status and alarms.
Display the internal temperature of the radio in degrees C.
Set or display the Time-out Timer delay in seconds.
Set or display the transmit frequency.
Set or display the transceiver’s unit address.
MDS 4710/9710 I/O Guide 21
22
5.4 Detailed Command Descriptions
The only critical commands for most applications are transmit and receive frequencies (
RX xxx.xxxx, TX xxx.xxxx
). However, proper use of the additional commands allows you to tailor the transceiver for a specific use, or conduct basic diagnostics on the radio. This section gives more
detailed information for the user commands previously listed in Table 7
In many cases, the commands shown here can be used in two ways.
First, you can type only the command name to view the currently programmed data. Secondly, you can set or change the existing data by typing the command, followed by a space, and then the desired entry. In the list below, allowable programming variables, if any, are shown in brackets following the command name.
AMASK [0000 0000–FFFF FFFF]
The
AMASK
command displays or sets which events cause the alarm output signal to be active. Normally, the mask is
FFFF FFFF
, meaning that any of the 32 possible events will activate the alarm output signal.
Entering the
AMASK
command alone displays the current setting of alarm events in hexadecimal format.
Entering the
AMASK
command followed by an eight-digit hexadecimal number reprograms the specified events to trigger an alarm.
The eight-digit hexadecimal number used as the command parameter is used to classify up to 32 events as alarm triggers, or disable alarm noti-
fication for an event. (See Table 8 below for a list of events.) The hex
value for the mask corresponds to the hex value for the
STAT
command
(page 29). Each bit that is a ‘1’ identifies the associated alarm condition
as a major alarm. Each bit that is a ‘0’ disables major alarm notification for that condition. If both the major and minor alarm bits are set to ‘0’ for that condition, alarm notification is entirely disabled. For more information on configuring the alarm response, contact Microwave Data Systems.
Event Number
01
02
03
04
07
08
09
10
Table 8. Text messages of alarm event codes
Text Message
Hardware mismatch
Model number not programmed
Authorization fault
Synthesizer out-of-lock
Voltage regulator fault detected
Radio not calibrated
DSP download fault
EEPROM write failure
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Table 8. Text messages of alarm event codes (Continued)
Event Number
11
12
16
17
18
20
25
26
31
Text Message
Checksum fault
Receiver time-out
Unit address not programmed
Data parity error
Data framing error
Configuration error
6V regulator output not in valid range
DC input power is not in valid range
Internal Temperature not in valid range
ASENSE [HI/LO]
The
ASENSE
command sets or displays the sense of the alarm output at
Pin 25 of the
DATA INTERFACE
connector.
Entering the
ASENSE
command alone shows whether the alarm output is active high or low. Entering the
ASENSE
command followed by
HI
or
LO
resets the alarm output to active high or low.
BAUD [xxxxx abc]
This command sets (or displays) the communication attributes for the
DATA INTERFACE
port. It has no effect on the RJ-11
DIAG.
port.
The first parameter (
xxxxx
) is baud rate. Baud rate is specified in bits-per-second (bps) and must be one of the following speeds: 110, 300,
1200, 2400, 4800, 9600, 19200, or 38400.
The second parameter of the
BAUD
command (
abc
) is a three-character block indicating how the data is encoded:
a
= Data bits (7 or 8)
b
= Parity (N for None, O for Odd, E for Even)
c
= Stop bits (1 or 2)
The factory default setting is 9600 baud, 8 data bits, no parity, 1 stop bit
(Example:
9600 8N1
).
NOTE:
7N1, 8O2, and 8E2 are invalid communication settings and are not supported by the transceiver.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 23
24
BUFF [ON, OFF]
This command sets or displays the received data handling mode of the radio. The command parameter is either
ON
or
OFF
. The default is
ON
.
The setting of this parameter affects the timing of how received RF data is sent out the
INTERFACE
connector. Outgoing (transmitted) data is not affected by this setting.
If data buffering is
OFF
, the radio operates with the lowest possible average latency. Data bytes are thus sent out the
INTERFACE
port as soon as an incoming RF data frame is disassembled. Average and typical latency will both be below 10 ms, but idle character gaps may be introduced into the outgoing data flow.
If data buffering is
ON
, the radio operates in seamless mode. Data bytes will be sent over the air as quickly as possible, but the receiver buffers
(stores) the data until enough bytes have arrived to cover worst-case gaps in transmission. This mode of operation is required for protocols such as MODBUS™ that do not allow gaps in their data transmission.
Note that seamless mode (
BUFF ON
) is intended only for applications where the transmitter’s baud rate is greater than or equal to the receiver’s baud rate. Enforcement of this rule is left up to the user.
CKEY [ON–OFF]
The
CKEY
command enables or disables the continuously-keyed function of the radio. When
CKEY
is set to
ON
, the radio is continuously keyed.
CTS [0–255]
The
CTS
(clear-to-send) command selects or displays the timer value associated with the CTS line response. The command parameter ranges from 0 to 255 milliseconds.
For DCE operation, the timer specifies how long to wait after the RTS line goes high, before the radio asserts CTS and the DTE can transmit the data. A CTS value of zero keys the radio and asserts the CTS line immediately after the RTS line goes high.
For CTS Key operation (see
DEVICE
command), the timer specifies how long to wait after asserting the CTS, before sending data out the
DATA
INTERFACE
port. A timer value of zero means that data will be sent out the data port without imposing a key-up delay. (Other delays may be present based on selected radio operating parameters.)
DATAKEY [ON, OFF]
The
DATAKEY
command enables or disables the ability of the radio to key the transmitter as data is received at the
DATA INTERFACE
connector.
Asserting RTS keys the radio regardless of this command setting.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
If
DATAKEY
is set to
ON
, the radio will key when a full data-character is received at the transceiver’s
DATA INTERFACE
connector. If
DATAKEY
is set to
OFF
, the radio needs to be keyed by asserting either the RTS or
PTT signal or with the
CKEY
or
KEY
command.
DEVICE [DCE, CTS KEY]
The
DEVICE
command controls or displays the device behavior of the radio. The command parameter is either
DCE
or
CTS KEY
.
The default selection is
DCE
. In this mode, CTS will go high following
RTS, subject to the CTS programmable delay time. If the
DATAKEY
command is set to
ON
, keying can be stimulated by the input of characters at the data port. Hardware flow control is implemented by signaling the
CTS line if data arrives faster than it can be buffered and transmitted.
If
CTS KEY
is selected, the radio is assumed to be controlling another radio. The RTS line is ignored and the CTS line is used as a keyline control for the other radio. CTS is asserted immediately following the receipt of RF data, but data will not be sent out the
DATA INTERFACE
port until after the CTS programmable delay time has expired. (This gives the other radio time to key.)
DKEY
This command deactivates the transmitter after it has been keyed with the
KEY
command.
DLINK [ON/OFF/xxxx]
This command is used to configure the local diagnostic link protocol used in network-wide diagnostics.
Entering
DLINK ON
enables the diagnostic link. Entering
DLINK OFF
disables the diagnostic link.
To change the diagnostic link, enter
DLINK
followed by one of the following baud rates: 1200, 2400, 4800, 9600, 19200 (default).
MDS 05-3305A01, Rev. B
DMGAP [xx]
The
DMGAP
command sets the amount of time in milliseconds to wait after the receipt of a character before interpreting the next received character as the start of a new message. When data port baud rates are slow, the gap between characters within a poll may be so long that the radio interprets the next character as the start of a new poll. When diagnostics
is being performed using passive messaging (see Performing Net-
work-Wide Remote Diagnostics on page 37), this command may be used
to change this behavior.
MDS 4710/9710 I/O Guide 25
26
DTYPE [NODE/ROOT]
This command establishes the local radio as a root radio or node radio for network-wide diagnostics. Entering
DTYPE NODE
configures the radio as a node radio. Entering
DTYPE ROOT
configures the radio as a root radio. Entering the
DTYPE
command alone displays the current setting.
See “Performing Network-Wide Remote Diagnostics” on page 37.
DUMP
This command displays all the programmed settings with this one command. The HHT display is too small to list all the command settings at one time. Therefore, this command is most useful if the command is issued from a computer or full-screen terminal.
HREV
This command displays the transceiver’s hardware revision level.
INIT
The
INIT
command is used to re-initialize the radio’s operating parameters to the factory defaults. This may be helpful when trying to resolve configuration problems that may have resulted from the entry of one or more improper command settings. If you are unsure of which command setting may have caused the problem, this command allows you to get back to a known working state. The following changes to the radio are made when
INIT
is entered:
•
CTS
is set to 0
•
DATAKEY
is set to
ON
•
DEVICE
is set to
DCE
•
PTT
is set to 0
•
SCD
is set to 0
•
TOT
is set to 30 seconds and set to
ON
•
PWR
is set to +37 dBm (5 watts)
All other commands stay in the previously established setting.
INIT [4710/9710]
This command sets the transceiver for operation outside the P-20 chassis by setting the following parameters as shown:
ASENSE
AMASK
RXTOT
ACTIVE HI
FFFF FFFF
(assert alarm output on all alarms)
NONE
(receive time-out timer disabled)
This command can be used prior to using the
INIT x720
command to restore the standard transceiver defaults
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
MDS 05-3305A01, Rev. B
INIT [4720/9720]
This command sets the transceiver for operation inside the P-20 chassis by setting the following parameters as shown:
ASENSE
AMASK
RXTOT
ACTIVE LO
FFFF 0000
(trigger on major alarms)
20
(20 minute time-out timer)
KEY
This command activates the transmitter. See also the
DKEY
command.
MODEL
This command displays the radio’s model number code.
MODEM [xxxx, NONE]
This command selects the radio’s modem characteristics. For digital operation enter
9600
(MDS x710A) or
19200
(MDS x710C). For analog operation, enter
NONE
.
OWM [XXX...]
This is a command to display or program an owner’s message. To program the owner’s message, type
OWM
then the message, followed by
ENTER
.
To display the owner’s message, type
OWM
then
ENTER
. The owner’s message appears on the display.
OWN [XXX...]
This is a command to display or program an owner’s name. To program the owner’s name, type
OWN
then the name, followed by
ENTER
.
To display the owner’s name, type
OWN
then
ENTER
name appears on the display.
. The owner’s
PTT [0–255]
This command sets or displays the key-up delay in milliseconds.
This timer specifies how long to wait after the radio receives a key signal from either the PTT or RTS lines (on the
DATA INTERFACE
), before actually keying the radio.
PWR [20–37]
NOTE:
This function may not be available, depending on certification requirements in a particular country.
MDS 4710/9710 I/O Guide 27
28
This command displays or sets the desired RF forward output power setting of the radio. The
PWR
command parameter is specified in dBm and can range from 20 through 37. The default setting is 37 dBm (5 watts).
To read the actual (measured) power output of the radio, use the
SHOW
PWR
command. A dBm-to-watts conversion chart is provided in
RSSI
This command continuously displays the radio’s Received Signal
Strength Indication (RSSI) in dBm units, until you press the Enter key.
Incoming signal strengths from –50 dBm to –120 dBm can be read.
RTU [ON/OFF/0-80]
This command re-enables or disables the radio’s internal RTU simulator, which runs with MDS’ proprietary polling programs (poll.exe and rsim.exe). The internal RTU simulator is available whenever a radio has diagnostics enabled. This command also sets the RTU address that the radio will respond to.
The internal RTU can be used for testing system payload data or pseudo bit error rate testing. It can be helpful in isolating a problem to either the external RTU or the radio.
RX [xxx.xxxx]
This command selects or displays the radio’s receive frequency in MHz.
The frequency step size is 6.25 kHz.
If the customer frequency has not been programmed at the factory, a default frequency will be programmed in the radio near the center of the frequency band.
NOTE:
A large change in receive frequency (more than 5 MHz) requires adjustment of the receiver helical filters for maximum
performance and RSSI. See Section 7.2, Helical Filter Adjust-
RXTOT [NONE, 1-255]
The
RXTOT
command selects or displays the receive time-out timer value in minutes. This timer triggers an alarm (event 12) if data is not detected within the specified time.
Entering the
RXTOT
command without a parameter displays the timer value in minutes. Entering the
RXTOT
command with a parameter ranging from 0 to 255 resets the timer in minutes. Entering the
RXTOT
command with the parameter
NONE
disables the timer.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
SCD [0-255]
This command displays or changes the soft-carrier dekey delay in milliseconds.
This timer specifies how long to wait after the removal of the keying signal before actually releasing the transmitter. A value of 0 milliseconds will unkey the transmitter immediately after the removal of the keying signal.
SER
This command displays the radio’s serial number as recorded at the factory.
SHOW [DC, PORT, PWR]
The
SHOW
command displays different types of information based on the command variables. The different parameters are:
•
DC
—Display DC input/output voltages
•
PORT
—Display the connector port (RJ-11 or DB-25) that is active for diagnostics and control.
•
PWR
—Display RF power output
SNR
This command continuously displays the signal-to-noise ratio of the received signal expressed in dB, until you press the Enter key. As used in this guide, the signal-to-noise measurement is based upon the signal level following equalization, for received frames.
The SNR is an indication of the received signal quality. The SNR indication ranges from 10 dB to 33 dB. A value of 10 dB represents a very poor signal. A value of 24 dB represents a very good signal.
When the SNR command is used, it causes the
DIAG.
port to enter an update mode, and the signal-to-noise ratio is updated and redisplayed every 2 seconds. The SNR continuously updates until the
ENTER
pressed.
key is
SREV
This command displays the software revision level of the transceiver firmware.
STAT
This command displays the current alarm status of the transceiver.
MDS 05-3305A01, Rev. B
If no alarms exist, the message
NO ALARMS PRESENT
appears at the top of the HHT display.
MDS 4710/9710 I/O Guide 29
30
If an alarm does exist, a two-digit code (00–31) is displayed and the alarm is identified as “Major” or “Minor.” A brief description of the alarm code is also given.
If more than one alarm exists, the word
MORE
appears at the bottom of the screen and additional alarms are viewed by pressing the
ENTER
key. Detailed descriptions of event codes are provided in Table 9 on page 32.
TEMP
This command displays the internal temperature of the transceiver in degrees Celsius.
TOT [1-255, ON, OFF]
This command sets or displays the transmitter Time-out Timer value
(1–255 seconds), as well as the timer status (
ON
or
OFF
). If the timer is on, and the radio remains keyed for a longer duration than the
TOT
value, the transmitter is automatically unkeyed.
When this happens, the radio must be commanded back to an unkeyed state before a new keying command is accepted. The default timer value is 30 seconds.
TX [xxx.xxxx]
This command selects or displays the radio’s transmit frequency in
MHz. The frequency step size is 6.25 kHz.
If the customer frequency has not been programmed at the factory, a default frequency will be programmed in the radio near the center of the frequency band.
UNIT [10000...65000]
The unit address is factory programmed to the last five digits of the serial number.
6.0
TROUBLESHOOTING
Successful troubleshooting of the radio system is not difficult, but it requires a logical approach. It is best to begin troubleshooting at the master station, as the rest of the system depends on the master for polling commands. If the master station has problems, the operation of the entire network can be compromised.
It is good practice to start by checking the simple things. For proper operation, all radios in the network must meet these basic requirements:
• Adequate and stable primary power. The radio contains an internal self-resetting fuse (4A). Remove primary power to reset.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
• Secure connections (RF, data and power)
• An efficient and properly aligned antenna system with a good received signal strength of at least –90 dBm. (It is possible for a system to operate with weaker signals, but reliability will be degraded.)
• Proper programming of the transceiver’s operating parameters
(see Section 5.0, TRANSCEIVER PROGRAMMING on page 17).
• The correct interface between the transceiver and the connected data equipment (correct cable wiring, proper data format, timing, etc.)
6.1 LED Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected. Table 5 on page 16
describes the function of each status LED.
6.2 Event Codes
When an alarm condition exists, the transceiver creates a code that can be read on an HHT connected to the
DIAG.
port. These codes can be very
helpful in resolving many system difficulties. Refer to Table 9 (page 32)
for a definition of the event codes.
Checking for Alarms—STAT command
To check for alarms, enter
STAT
on the HHT. If no alarms exist, the message
NO ALARMS PRESENT
appears at the top of the display (Figure 12).
Invisible place holder
Figure 12. HHT Display in Response to STAT Command
If an alarm does exist, a two-digit alarm code (00–31) is displayed and the event is identified as a Major or Minor Alarm. A brief description of the alarm is also given.
MDS 05-3305A01, Rev. B
If more than one alarm exists, the word
MORE
appears at the bottom of the screen. To view additional alarms, press
ENTER
.
MDS 4710/9710 I/O Guide 31
32
Major Alarms vs. Minor Alarms
Major Alarms—report serious conditions that generally indicate a hardware failure, or other abnormal condition that will prevent (or seriously hamper) further operation of the transceiver. Major alarms generally indicate the need for factory repair. Contact MDS for further assistance.
Minor Alarms—report conditions that, under most circumstances will not prevent transceiver operation. This includes out-of-tolerance conditions, baud rate mismatches, etc. The cause of these alarms should be investigated and corrected to prevent system failure.
Event Code Definitions
Table 9 contains a listing of all event codes that may be reported by the
transceiver.
Table 9. Event Codes
Event
Code
01
02
04
Event
Class
Major
Major
Major
06
07
08
09
10
11
12
13–15
16
17
18
19–24
25
Major
Major
Major
--
Major
--
Major
--
Minor
Minor
Minor
--
Minor
Description
Improper software detected for this radio model.
The model number of the transceiver is unprogrammed.
One or both of the internal programmable synthesizer loops is reporting an out-of-lock condition.
An unrecoverable fault was detected on the auto-D chip. The radio will not receive data.
One or more of the radio’s internal voltage regulators is reporting a failure. The radio will not operate.
The system is reporting that it has not been calibrated. Factory calibration is required for proper radio operation.
Not used.
The internal microcontroller was unable to properly program the system to the appropriate EEPROM defaults. A hardware problem may exist.
Not used.
Receiver time-out. No data received within the specified receiver time-out time.
Not used.
Not used.
A data parity fault has been detected on the DATA
INTERFACE connector. This usually indicates a parity setting mismatch between the radio and the RTU.
A data framing error has been detected on the DATA
INTERFACE connector. This may indicate a baud rate mismatch between the radio and the RTU.
Not used.
The 5.6 volt power regulator is out-of-tolerance. If the error is excessive, operation may fail.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Table 9. Event Codes (Continued)
Event
Code
26
27, 28
31
Event
Class
Minor
--
Minor
Description
The DC input voltage is out-of-tolerance. If the voltage is too far out of tolerance, operation may fail.
Not used
The transceiver’s internal temperature is approaching an out-of-tolerance condition. If the temperature drifts outside of the recommended operating range, system operation may fail.
7.0
TECHNICAL REFERENCE
7.1 MDS 4710/9710 Transceiver Specifications
MDS 05-3305A01, Rev. B
TRANSMITTER SYSTEM SPECIFICATION
Operating Frequency:
Frequency Stability:
Carrier Power Accuracy:
Adjacent Channel Power:
Spurious Emissions:
Intermodulation:
Transmitter Attack Time:
Transmitter Release Time:
Transient Power
Adjacent Channel:
See Transmitter Specifications
±1.5 ppm
)
MDS x710A: –60 dBc
MDS x710C: -40 dBc
–36 dBm, 9 kHz to 1 GHz
–30 dBm, 1 GHz to 12 GHz
40 dBc
5 ms maximum
5 ms maximum
MDS x710A: –50 dBc
MDS x710C: –40 dBc
RECEIVER SYSTEM SPECIFICATION
Operating Frequency:
Maximum Usable Sensitivity:
Co Channel Rejection:
Adjacent Channel Selectivity:
Spurious Response Rejection:
Intermodulation:
Blocking:
Spurious Radiation:
See Receiver Specifications
MDS x710A: –113 dBm at 10
–2
)
–107 dBm at 10
–2
)
MDS x710C: –108 dBm at 10
–2
BER (normal
–102 dBm at 10
–2
)
–18 dB
60 dB (normal
1
)
50 dB (extreme
2
)
70 dB
65 dB
84 dB
–57 dBm (9 kHz to 1 GHz)
–47 dBm (1 GHz to 12.75 GHz)
DATA CHARACTERISTICS
Signaling Type:
Data Interface Rates:
Data Latency:
Byte Length:
RS-232; DB-25 Female connector
110–38400 bps—asynchronous
10 ms maximum
10 bits
MDS 4710/9710 I/O Guide 33
34
TRANSMITTER
Frequency Range
One of these bands:
4710*
380–400 MHz
400–450 MHz
450–512 MHz
406–530 MHz
9710**
800–880 MHz
880–960 MHz
*Refer to Figure 4 on page 4 to determine which band the radio operates on.
**Refer to Figure 5 on page 4 to determine which band the radio operates on.
Modulation Type: Binary CPFSK
Carrier Power:
Duty Cycle:
Output Impedance:
Frequency Stability:
Channel Spacing:
Adjacent Channel Power:
0.1 watts to 5 watts
Continuous
50 ohms
±1.5 ppm
MDS x710A: 12.5 kHz
MDS x710C: 25 kHz
MDS x710A: –60 dBc
MDS x710C: –40 dBc
Transmitter Spurious
Conducted Emissions
Operational:
Standby:
–36 dBm [73 dBc], 9 kHz to 1 GHz
–30 dBm [67 dBc], 1 GHz to 12.5 GHz
–57 dBm, 9 kHz to 1 GHz
–47 dBm, 1 GHz to 12.5 GHz
Transmitter Spurious
Radiated Emissions: –36 dBm [73 dBc], 9 kHz to 1 GHz
–30 dBm [67 dBc], 1 GHz to 12.5 GHz
Harmonics:
2nd harmonic: –73 dBc
3rd harmonic & higher: –67 dBc
Power:
Time-out Timer:
Transmitter Keying:
50 dBc
30 seconds, default (selectable with TOT)
Data activated or RTS
RECEIVER
Frequency Range
One of these bands:
Type:
Frequency Stability:
Maximum Usable Sensitivity:
Co-channel Rejection:
Adjacent Channel Rejection:
4710*
380–400 MHz
400–420 MHz
420–450 MHz
450–480 MHz
480–512 MHz
406–430 MHz
9710**
800–860 MHz
860–900 MHz
900–960 MHz
*Refer to Figure 4 on page 4 to determine which
band the radio operates on.
**Refer to Figure 5 on page 4 to determine which
band the radio operates on.
Double conversion superheterodyne
1.5 kHz
MDS x710A: –113 dBm BER at 10
–2
(normal
–107dBm BER at 10
–2
)
MDS x710C: –108 dBm BER at 10
–2
(normal
–102dBm BER at 10
–2
)
MDS x710A: –12 dB
MDS x710C: –18 dB
60 dB (normal
1
)
50 dB (extreme
2
)
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Spurious
Response Rejection:
Intermodulation
Response Rejection:
Receiver Spurious
Conducted Emissions:
70 dB
65 dB
–57 dBm, 9 kHz to 1 GHz
–47 dBm, 1 GHz to 12.5 GHz
Receiver Spurious
Radiated Emissions:
Bandwidth:
–57 dBm, 30 MHz to 1 GHz
–47 dBm, 1 GHz to 12.5 GHz
MDS x710A: 12.5 kHz
MDS x710C: 25 kHz
PRIMARY POWER
Voltage:
TX Supply Current:
RX Supply Current:
Power Connector:
Fuse:
13.8 Vdc Nominal (10.5 to 16 Vdc)
2.5 amps
Operational—150 mA
Standby (sleep)—25 mA
2-pin polarized locking connector
4 Amp Polyfuse, Self-Resetting, Internal
(Remove Primary Power to Reset)
Diode across primary input Reverse Polarity Protection:
ENVIRONMENTAL
Humidity:
Temperature Range:
Weight:
Case:
95% at 40 degrees C
–30 to 60 degrees C (full performance)
–40 to 70 degrees C (operational)
1.6 kilograms
Die-cast Aluminum
DIAGNOSTICS INTERFACE
Signalling Standard:
Connector:
I/O Devices:
RS-232
RJ-11 (may use DB-25 instead if Pin 23 is grounded to enable diagnostics channel)
MDS Hand Held Terminal or PC with MDS software
MDS 05-3305A01, Rev. B
1.
Normal refers to:
2.
Extreme refers to:
Temperature, +15 to +35 degrees C
Humidity, 20% to 75%
Voltages, Nominal Specified
Temperature, –25 to +55 degrees C
Humidity, 20% to 75%
Voltages, ±10%
MDS 4710/9710 I/O Guide 35
36
7.2 Helical Filter Adjustment
If the frequency of the radio is changed more than 5 MHz, the helical filters should be adjusted for maximum received signal strength (RSSI).
To adjust the filters, proceed as follows:
1. Remove the top cover from the transceiver by loosening the four screws and lifting straight up.
2. Locate the helical filters on the PC board. See Figure 13.
3. Apply a steady signal to the radio at the programmed receive frequency (–80 dBm level recommended; no stronger than –60 dBm).
This can be done with a signal generator or an over-the-air signal.
4. Measure the radio’s RSSI using one of the following methods:
• With an HHT (See Section 5.0, TRANSCEIVER PROGRAM-
• With MDS Radio Configuration Software (See Section 7.4,
Upgrading the Radio’s Software on page 38).
• With a voltmeter connected to Pin 21 of the
DATA INTERFACE
connector (See Section 4.2, RSSI Measurement on page 16).
5. With a non-metallic adjustment tool, adjust each section of the helical filters for maximum RSSI. Re-install the cover to the transceiver.
Invisible place holder
U104
FRONT PANEL
OF RADIO
U203
U202
U101
HELICAL
ADJUSTMENTS
J301
Figure 13. Helical Filter Locations
SHIELD
COVER
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
7.3 Performing Network-Wide Remote Diagnostics
Diagnostics data from a remote radio can be obtained by connecting a laptop or personal computer running MDS InSite diagnostics software
to any radio in the network. Figure 14 shows an example of a setup for
performing network-wide remote diagnostics.
Invisible place holder
RTU
RTU
DTYPE
NODE
DTYPE
NODE
RTU
DTYPE
NODE
TO DATA
PORT
TO
DIAGNOSTICS
PORT
DTYPE
ROOT
MASTER STATION
ROOT
DIAGNOSTICS DATA
(TO InSite) PAYLOAD DATA
(TO SCADA APPLICATION)
HOST COMPUTER
Figure 14. Network-Wide Remote Diagnostics Setup
If a PC is connected to any radio in the network, intrusive polling
(polling which briefly interrupts payload data transmission) can be performed. To perform diagnostics without interrupting payload data transmission, connect the PC to a radio defined as the “root” radio. A radio is defined as a root radio using the
DTYPE ROOT
command locally, at the radio.
A complete explanation of remote diagnostics can be found in MDS’
Network-Wide Diagnostics System Handbook. See the Handbook for more information about the basic diagnostic procedures outlined below.
MDS 05-3305A01, Rev. B
1. Program one radio in the network as the root radio by entering the
DTYPE ROOT
command at the radio.
MDS 4710/9710 I/O Guide 37
38
2. At the root radio, use the
DLINK ON
and
DLINK [baud rate]
commands to configure the diagnostic link protocol on the RJ-11 port.
3. Program all other radios in the network as nodes by entering the
DTYPE NODE
command at each radio.
4. Use the
DLINK ON
and
DLINK [baud rate]
commands to configure the diagnostic link protocol on the RJ-11 port of each node radio.
5. Connect same-site radios using a null-modem cable at the radios’ diagnostic ports.
6. Connect a PC on which MDS InSite software is installed to the root radio, or to one of the nodes, at the radio’s diagnostic port. (This PC may be the PC being used to collect payload data, as shown in
To connect a PC to the radio’s
DIAG.
port, an RJ-11 to DB-9 adapter
(MDS P/N 03-3246A01) is required. If desired, an adapter cable may be constructed from scratch using the information shown in
1
6
RJ-11 PIN LAYOUT
RJ-11 PLUG
(TO RADIO)
4 TXD
5 RXD
6 GND
Invisible place holder
DB-9 FEMALE
(TO COMPUTER)
RXD 2
TXD
3
GND 5
Figure 15. RJ-11 to DB-9 Adapter Cable
7. Launch the MDS InSite application at the PC. (See the MDS InSite
User’s Guide for instructions.)
7.4 Upgrading the Radio’s Software
Windows-based Radio Configuration software is available (MDS P/N
03-3156A01) for upgrading the internal radio software when new features become available from Microwave Data Systems. Contact MDS for ordering information.
To connect a PC to the radio’s
DIAG.
port, an RJ-11 to DB-9 adapter
(MDS P/N 03-3246A01) is required. If desired, an adapter cable may be
constructed from scratch using the information shown in Figure 15.
Using the Radio Configuration software, select
RADIO SOFTWARE
UPGRADE
under the
SYSTEM
menu. Follow the prompts and online instructions to determine how to proceed.
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
Software upgrades are distributed as ASCII files with a “.S28” extension. These files use the Motorola S-record format. When the download is activated, the radio’s
PWR
LED will flash rapidly, confirming that a download is in process. The download takes about two minutes.
NOTE:
If a download fails, the radio is left unprogrammed and inoperative. This is indicated by the
PWR
LED flashing slowly (1 second on/1 second off). This condition is only likely if there were to be a power failure to the computer or radio during the downloading process. The download can be attempted again when the fault has been corrected.
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 39
7.5 dBm-Watts-Volts Conversion Chart
Table 10 is provided as a convenience for determining the equivalent
wattage or voltage of an RF power expressed in dBm.
Table 10. dBm-Watts-Volts Conversion—for 50 Ohm Systems dBm V Po
+53 100.0 200W
+50 70.7
100W
+49 64.0
80W
+48 58.0
64W
+47 50.0
50W
+46 44.5
40W
+45 40.0
32W
+44 32.5
25W
+43 32.0
20W
+42 28.0
16W
+41 26.2
12.5W
+40 22.5
10W
+39 20.0
8W
+38 18.0
6.4W
+37 16.0
5W
+36 14.1
4W
+35 12.5
3.2W
+34 11.5
2.5W
+33 10.0
2W
+32 9.0
1.6W
+31 8.0
1.25W
+30 7.10
1.0W
+29 6.40
800mW
+28 5.80
640mW
+27 5.00
500mW
+26 4.45
400mW
+25 4.00
320mW
+24 3.55
250mW
+23 3.20
200mW
+22 2.80
160mW
+21 2.52
125mW
+20 2.25
100mW
+19 2.00
80mW
+18 1.80
64mW
+17 1.60
50mW
+16 1.41
40mW
+15 1.25
32mW
+14 1.15
25mW
+13 1.00
20mW
+12 .90
16mW
+7
+6
+5
+4
+11 .80
+10 .71
+9
+8
.64
.58
.500
.445
.400
.355
12.5mW
10mW
8mW
6.4mW
5mW
4mW
3.2mW
2.5mW
+3
+2
+1
.320
2.0mW
.280
1.6mW
.252
1.25mW
dBm V
-8
-9
-10
-11
-12
-13
-14
-15
-16
-4
-5
-6
-7
0
-1
-2
-3
Po
.225
1.0mW
.200
.80mW
.180
.64mW
.160
.50mW
.141
.40mW
.125
.32mW
.115
.25mW
.100
.20mW
.090
.16mW
.080
.125mW
.071
.10mW
.064
.058
.050
.045
.040
.0355
dBm mV Po
-41
-42
-43
-44
-45
-46
-47
-48
-33
-34
-35
-36
-37
-38
-39
-40
-25
-26
-27
-28
-29
-30
-31
-32
-17
-18
-19
-20
-21
-22
-23
-24
12.8
11.5
10.0
8.9
8.0
7.1
6.25
5.8
31.5
28.5
25.1
22.5
.01mW
20.0
17.9
15.9
14.1
.001mW
2.0
1.8
1.6
1.4
1.25
1.18
1.00
0.90
5.0
4.5
4.0
3.5
3.2
2.85
2.5
2.25
.1µW
dBm mV Po
-57
-58
-59
-60
-61
-62
-63
-64
-49
-50
-51
-52
-53
-54
-55
-56
0.80
0.71
.01µW
0.64
0.57
0.50
0.45
0.40
0.351
0.32
0.286
0.251
0.225 .001µW
0.200
0.180
0.160
0.141
dBm µV Po
-89
-90
-91
-92
-93
-94
-95
-96
-97
-81
-82
-83
-84
-85
-86
-87
-88
-73
-74
-75
-76
-77
-78
-79
-80
-65
-66
-67
-68
-69
-70
-71
-72
8.0
7.1
6.1
5.75
5.0
4.5
4.0
3.51
3.2
20.0
18.0
16.0
11.1
12.9
11.5
10.0
9.0
80
71
65
58
128
115
100
90
.1nW
50
45
40
35
32
29
25
22.5
.01nW
.001nW
dBm µV Po
-98
-99
2.9
2.51
-100 2.25
.1pW
-101 2.0
-102 1.8
-103 1.6
-104 1.41
-105 1.27
-106 1.18
dBm nV Po
-123 160
-124 141
-125 128
-126 117
-127 100
-128 90
-129 80
-130 71
-131 61
-132 58
-133 50
-134 45
-135 40
-136 35
-137 33
-138 29
-139 25
-140 23
-107 1000
-108 900
-109 800
-110 710 .01pW
-111 640
-112 580
-113 500
-114 450
-115 400
-116 355
-117 325
-118 285
-119 251
-120 225 .001pW
-121 200
-122 180
.1ƒW
.01ƒW
40 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
NOTES
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide 41
42 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
INDEX
A
Accessories
Accessory Power pinout (Pin 18)
Active messaging (defined)
Alarms
alarm code definitions major vs. minor
pinout (Pin 25)
using STAT command to display
AMASK command
Antenna
RSSI command used to refine heading
Applications
Multiple Address Systems (MAS)
point-to-point system
ASENSE command
B
BAUD command
Baud rate
setting for RJ-11 DIAG port (DLINK command)
Bit, defined
Bits-per-second. See BPS
BPS (bits-per-second), defined
BUFF command
C
Cable, loss due to length of coaxial at 400 MHz
Cable, loss due to length of coaxial at 960 MHz
Cautions
use attenuation between all units in test setup
CKEY command
COMMAND FAILED error message
Command summary, table
Commands
AMASK (set/display alarm triggers)
ASENSE (set alarm output state)
BAUD (set/display rate, encoding)
BUFF (set/display data handling mode)
CKEY (enable/disable continuous keying)
CTS (set/display CTS line response timer)
MDS 05-3305A01, Rev. B
DATAKEY (enable/disable transmitter keying by radio)
DEVICE (set/display radio behavior)
DKEY (deactivate transmitter after KEY command)
DLINK (enable/disable network-wide diagnostics)
DMGAP (set time to wait between characters)
DTYPE (set radio to root or node for diagnostics)
DUMP (display all programmed settings) entering on Hand-Held Terminal (HHT)
Hand-Held Terminal (HHT)
HREV (display hardware revision level)
INIT (reinitialize radio to factory defaults)
INIT xx10 (restore standard transceiver defaults)
INIT xx20 (configure radio for use with P-20 chassis)
KEY (activate transmitter)
MODEL (display radio model number code)
MODEM (set modem speed)
OWM (set/display owner’s message)
OWN (set/display owner’s name)
PTT (set/display key-up delay)
PWR (set/display RF forward output power)
RSSI (display RSSI)
RTU (enable/disable internal RTU)
RX (set/display receive frequency)
RXTOT (set/display receive time-out timer value)
SCD (set/display soft-carrier dekey delay)
SER (display radio serial number
SHOW (display DC voltage, data port, RF power)
SNR (display signal-to-noise ratio)
SREV (display software revision level)
STAT (display current alarm status)
TEMP (display internal temperature)
TOT (set/display time-out value and timer status)
TX (set/display transmit frequency)
Conversions, dBm-Watts-Volts
CTS pinout (Pin 5)
D
Data interface
connector pinouts
display active connector port installing connection
DATAKEY command
dB. See Decibel dBi, defined
DCD
LED
DCE (Data Cirtuit-terminating Equipment), defined
MDS 4710/9710 I/O Guide I-1
Description, product
DEVICE command
Diagnostic Channel Enable, pinout (Pin 23)
Diagnostics
network-wide, performing
PC software used for
using InSite software for network-wide
Display
alarm triggers (AMASK command)
all programmed settings (DUMP command)
baud rate and encoding (BAUD command)
connector port, active (SHOW command)
CTS line response timer (CTS command) data handling mode (BUFF command)
DC voltage (SHOW command)
hardware revision leve (HREV command)l key-up delay (PTT command)
27 model number code (MODEL command)
owner’s message (OWM command)
owner’s name (OWN command)
radio behavior (DEVICE command)
radio serial number (SER command)
receive frequency (RX command)
receive time-out timer value (RXTOT command)
RF forward output power (PWR command)
RF output (SHOW command)
RSSI (RSSI command)
signal-to-noise ratio (SNR command)
soft-carrier dekey delay (SCD command)
29 software revision level (SREV command)
temperature, internal (TEMP command)
30 time-out value and timer status (TOT command) transmit frequency (TX command)
DKEY command
DLINK command
use of
DMGAP command
DSP (Digital Signal Processing), defined
DSR pinout (Pin 6)
DTE (Data Terminal Equipment), defined
DTYPE command
use of
DUMP command
E
Enable/disable
continuous keying (CKEY command) diagnostic channel, pinout (Pin 23)
internal RTU (RTU command)
network-wide diagnostics (DLINK command)
network-wide diagnostics, procedures
I-2
Error messages
command failed
EEPROM failure
incorrect entry
not programmed text too long
unknown command
F
Feedlines
Frame, defined
Frequency
adjusting helical filter when changed
setting. See TX and RX commands
G
Glossary
Ground
on Pin 12 to enable Sleep mode protective (Pin 1)
signal (Pin 7)
H
Half-duplex
switched carrier operation
connected to transceiver, illustrated
display in response to STAT command, illustrated entering commands
19 error messages displayed on
keyboard commands
operational settings, table
reinitialization display, illustrated reinitializing
Hardware flow control, defined
Helical filter
adjusting
HREV command
I
Illustrations
antenna, Yagi
Hand-Held Terminal (HHT) connected to transceiver
Hand-Held Terminal (HHT) reinitialization display
Hand-Held Terminal display in response to STAT command
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
helical filter locations
network-wide diagnostics
point-to-point link
RSSI vs. Vdc
transceiver connectors & indicators transceiver mounting dimensions
INCORRECT ENTRY error message
INIT command
INIT xx10 command
INIT xx20 command
InSite software
using to perform remote diagnostics
Installation
antenna
DATA INTERFACE connection
power connection steps
Intrusive diagnostics (defined)
K
KEY command
Keying
continuously keyed versus switched carrier operation
on data (DKEY command)
switched carrier, defined
L
LEDs
DCD
indicators, described
PWR
RXD
status indicators, illustrated
TXD
TXD, Pin 2
M
illustration
Master Station
MCU (Microcontroller Unit), defined
MODEL command
Model number codes
MDS 05-3305A01, Rev. B
MODEM command
Modem, set speed. See MODEM command
N
Network-wide diagnostics
active messaging, defined defined
enable/disable (DLINK command)
enable/disable internal RTU (RTU command) illustrated
intrusive diagnostics, defined passive messaging (defined)
procedures
set radio to root or node (DTYPE command)
set time to wait between characters (DMGAP command)
NOT AVAILABLE error message
NOT PROGRAMMED error message
O
environment specifications for
Output, 9.9 Vdc regulated, pinout (Pin 19)
Owner’s message, set/display. See OWM command
Owner’s name, set/display. See OWN command
P
Passive messaging (defined)
Payload data (defined)
Pinouts on data interface
PLC (Programmable Logic Controller), defined
Point-to-multipoint
defined
system
Point-to-point
system
Poll, defined
Power
connection
display DC voltage (SHOW command)
display RF output (SHOW command)
LED status indicator (PWR LED)
RF, chart for converting dBm-Watts-Volts specifications
downloading new software
Procedures
checking for alarms (STAT command)
connecting Hand-Held Terminal (HHT)
entering commands using the Hand-Held Terminal (HHT) helical filter adjustment
MDS 4710/9710 I/O Guide I-3
measuring RSSI with DC voltmeter network-wide diagnostics operation
reading LED status indicators
resetting Hand-Held Terminal (HHT)
troubleshooting
Product
accessories
display model number code (MODEL command)
display radio serial number (SER command)
model number codes
Programming radio as root or node
Programming, transceiver
PTT
PWR
R
Radio
Configuration Software
serial number, displaying (SER command)
Receive Audio Output pinout (Pin 11)
Receiver
unsquelched signal (Pin 10)
Remote
command, used to refine antenna heading
measuring
pinout (Pin 21)
vs. Vdc, illustrated
RTU
RTU (Remote Terminal Unit)
remote reset (Pin 15)
RUS pinout (Pin10)
RTU reset (Pin 15)
Station, defined
Station, illustrated
Resetting
Hand-Held Terminal (HHT) (SHIFT,CTRL,SPACE keys)
Revision level
display hardware (HREV command)
display software (SREV command)
RSSI
adjusting helical filter for increased signal strength
I-4
RXD LED
description
RXTOT command
S
SCADA (Supervisory Control And Data Acquisition), defined
SCD command
Set
alarm output state (ASENSE command)
alarm triggers (AMASK command)
receive time-out timer value (RXTOT command)
SHOW command
Signal
loss due to coaxial cable length at 960 MHz, table
loss due to coaxial cable length, table
Simplex
special case of switched carrier operation
Sleep mode
example implementation
ground on Radio Inhibit pin activates
shown by PWR LED status indicator
SNR command
Software
diagnostics and control used from PC
display revision level upgrades (.S28 files)
used for diagnostics and programming
Specifications
diagnostics interface environment
receiver
receiver system
transmitter system
SWR (Standing Wave Radio), defined
T
Tables
accessories
alarm code definitions
command summary
conversions, dBm-Watts-Volts data interface connector pinouts
Hand-Held Terminal (HHT) operational settings
LED status indicators
length vs. loss in coaxial cables
MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
length vs. loss in coaxial cables at 960 MHz
TEMP command
Temperature, displaying internal (TEMP command)
TEXT TOO LONG error message
Timer, set/display time-out value and status (TOT command)
Transceiver
applications
configuring for operation
1 connectors and indicators, illustrated
diagnostics using PC software
dimensions, mounting mounting
upgrading software
Transmit Audio Input pinout (Pin 9)
Transmitter
Troubleshooting
connecting Hand-Held Terminal (HHT) for displaying alarm
performing network-wide diagnostics
using PC software for
TX command
TXD LED
Pin 2
U
UNKNOWN COMMAND error message
MDS 05-3305A01, Rev. B MDS 4710/9710 I/O Guide I-5
I-6 MDS 4710/9710 I/O Guide MDS 05-3305A01, Rev. B
IN CASE OF DIFFICULTY...
Our products are designed for long life and trouble-free operation. However, this equipment, as with all electronic equipment may have an occasional component failure. The following information will assist you in the event that servicing becomes necessary.
FACTORY TECHNICAL ASSISTANCE
Technical assistance for our products is available from our Customer Support Team during business hours
(8:00 A.M.–5:30 P.M. Eastern Time). When calling, please give the complete model number of the radio, along with a description of the trouble symptom(s) that you are experiencing. In many cases, problems can be resolved over the telephone, without the need for returning the unit to the factory.
Please use the following telephone numbers for product assistance:
716-242-9600 (Phone)
716-242-9620 (FAX)
FACTORY REPAIRS
Component-level repair of radio equipment is not recommended in the field. Many components are installed using surface mount technology, which requires specialized training and equipment for proper servicing. For this reason, the equipment should be returned to the factory for any PC board repairs. The factory is best equipped to diagnose, repair and align your radio to its proper operating specifications.
If return of the equipment is necessary, you will be issued a Returned Material Authorization (RMA) number. The RMA number will help expedite the repair so that the equipment can be repaired and returned to you as quickly as possible. Please be sure to include the RMA number on the outside of the shipping box, and on any correspondence relating to the repair. No equipment will be accepted for repair without
an RMA number.
A statement should accompany the radio describing, in detail, the trouble symptom(s), and a description of any associated equipment normally connected to the radio. It is also important to include the name and telephone number of a person in your organization who can be contacted if additional information is required.
The radio must be properly packed for return to the factory. The original shipping container and packaging materials should be used whenever possible. All factory returns should be addressed to:
Microwave Data Systems Inc.
Customer Service Department
(RMA No. XXXX)
175 Science Parkway
Rochester, NY 14620 USA
When repairs have been completed, the equipment will be returned to you by the same shipping method used to send it to the factory. Please specify if you wish to make different shipping arrangements.
175 Science Parkway, Rochester, New York 14620
General Business: +1 (716) 242-9600
FAX: +1 (716) 242-9620
Web: www.microwavedata.com
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Table of contents
- 9 1.0 GENERAL
- 9 1.1 Introduction
- 10 1.2 Applications
- 10 Point-to-Multipoint, Multiple Address Systems (MAS)
- 11 Point-to-Point System
- 11 Continuously Keyed versus Switched Carrier Operation
- 11 Single Frequency (Simplex) Operation
- 11 1.3 Model Number Codes
- 12 1.4 Accessories
- 14 2.0 GLOSSARY OF TERMS
- 17 3.0 INSTALLATION
- 17 3.1 Installation Steps
- 19 3.2 Transceiver Mounting
- 19 3.3 Antennas and Feedlines
- 20 Feedlines
- 21 3.4 Power Connection
- 21 3.5 Data Interface Connections
- 21 3.6 Using the Radio’s Sleep Mode
- 21 System Example
- 23 4.0 OPERATION
- 24 4.1 LED Indicators
- 24 4.2 RSSI Measurement
- 25 5.0 TRANSCEIVER PROGRAMMING
- 25 5.1 Hand-Held Terminal Connection & Startup
- 26 5.2 Hand-Held Terminal Setup
- 27 5.3 Keyboard Commands
- 27 Entering Commands
- 27 Error Messages
- 30 5.4 Detailed Command Descriptions
- 30 AMASK [0000 0000–FFFF FFFF]
- 31 ASENSE [HI/LO]
- 31 BAUD [xxxxx abc]
- 32 BUFF [ON, OFF]
- 32 CKEY [ON–OFF]
- 32 CTS [0–255]
- 32 DATAKEY [ON, OFF]
- 33 DEVICE [DCE, CTS KEY]
- 33 DLINK [ON/OFF/xxxx]
- 33 DMGAP [xx]
- 34 DTYPE [NODE/ROOT]
- 34 INIT [4710/9710]
- 35 INIT [4720/9720]
- 35 MODEL
- 35 MODEM [xxxx, NONE]
- 35 OWM [XXX...]
- 35 OWN [XXX...]
- 35 PTT [0–255]
- 35 PWR [20–37]
- 36 RTU [ON/OFF/0-80]
- 36 RX [xxx.xxxx]
- 36 RXTOT [NONE, 1-255]
- 37 SCD [0-255]
- 37 SHOW [DC, PORT, PWR]
- 38 TOT [1-255, ON, OFF]
- 38 TX [xxx.xxxx]
- 38 UNIT [10000...65000]
- 38 6.0 TROUBLESHOOTING
- 39 6.1 LED Indicators
- 39 6.2 Event Codes
- 39 Checking for Alarms—STAT command
- 40 Major Alarms vs. Minor Alarms
- 40 Event Code Definitions
- 41 7.0 TECHNICAL REFERENCE
- 41 7.1 MDS 4710/9710 Transceiver Specifications
- 44 7.2 Helical Filter Adjustment
- 45 7.3 Performing Network-Wide Remote Diagnostics
- 46 7.4 Upgrading the Radio’s Software
- 48 7.5 dBm-Watts-Volts Conversion Chart