GE MDS DS9790 User Manual 8

GE MDS LLC 8

8

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Date Submitted	1999-03-12 00:00:00
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Document Title	8

DEC 18 i998 Exhibit c
Installation & Operation
Manual
Multiple Address System
Master Station Radio
MDS 05-3438A01, REV. 01
DECEMBER 1998
PRELIMINARY
CALIFORNIA HA$R°WAVE
MICROWAVE SYSTEMS
Installation and Operation Guide
QUICK START GUIDE
1. Install and connect the antenna system to the radio. (Page 18)
- Use a directional antenna aimed at the associated stauon.
- Use low loss feedline suited for 400 MHz. Keep the leedline as short as possmle.
Connect the host computer to the rear panel DATA connector.
9’
Verify proper mains voltage level, connect mains to the radio and set the
power switch to ON.
4. Measure Received Signal Strength
5. Observe Front Panel Indicators for proper operation.
—=-.;.....e°“:“
BQQQQ
99
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ACTIVE (green)—This transceiver board (A or B) is the selected unit.
STEV (yellow)7This transceiver board (A or B) is the slandbv unit (Protected version only).
ALARM (red)AGeneral Iauil not covered by the other alarm categories (FlX ALR, TX ALR. I/O ALFl).
FIX ALR (red)7Ditliculty receiving, May be due to an antenna problem, receiver fault, or other condition causing
a low received signal level.
TX ALFl (red)~FauIt with the transmit Circuitry. or the transmitter is unkeyed,
I/O ALR (rem—The data rate or format of data at the data interlace connector is incompatible with the radio
settings
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Mlmmv! m“
TABLE OF CONTENTS
1.0 INTRODUCTION ........
2.0 PRODUCT DESCRIPTION .............................................................
2.1 Redundant versus Non-redundant .
2.2 Applications ,,,,,,,
Basic MAS Master Station Operation
Repeater and Polling Remote Operation
23 Features ..
2.4 Accessories
2.5 Model Number Codes
2.6 Terms and Abbreviations
3.0 INSTALLATION PLANNING
3.1 General Requirements
Site Selection ......
A Word About Interferenc
3.2 Antenna and Feedline Selection
Antenna System.
Feedline Selection .
4.0 INSTALLATION PROCEDURES ......
4.1 Unpacking and Inspection
4.2 Mounting the Radio
Rack Mounting.
Tabletop Mounting
Remote Front Panel Mounting—Optional Conﬁguration.
4.3 Primary Power .
AC—Pcwered Units
DC—Powered Units
44 Antenna System ..
Antenna Installation
Feedllne Installation.
4.5 Inteﬂace Wiring Connections
Data Connector.
Diagnostics . .......
Alarm Contacts and Battery Back-up Connections
4-Wire Audio Connecto
4.6 Post Installation Checks .
5.0 START-UP AND OPERATION .........................................
51 Initial Startup .
Normal Indications
Maximizing RSSI...
MDS 05»3438A01, Rev. 01
Installation and Operation Guide i
5.2 From PaneI Indicators ................................................................... 20
LED Indicators
LCD Display...
Programming and Control Buttons
Navigaling Through the LCD Screens.
6.0 DIAGNOSTICS AND CONTROL ,,,,,
6.1 PC Connecﬂon
62 Command Summaries
8.3 DeIaiIsd Command Descriptions .
ALARM ................................
AMASK [0000 GOOD—FFFF FFFF].
ASENSE [HI/LO] .............
BAUD [xxxxx abc]/[xxxxx] S
BUFF [ON/OFF]
CKEY [ON/OFF]
CLOS
CTS [0—255]
DATAKEY [ON/OFH.
DATE [mmm dd yyyy]
where mmm is a three—character abbreviation oi Ihe month
DEVICE [DCE/CTS KEY]
DKEYI.
MODEM [NONE BELL, 48008, 96008. MPT1411]
NMASK [0000 oooo-FFFF FFFF].
0PT!.....,,.
OWM [xxxxx
OWN [xxmx] ,.
PFIOG
PTT [0-255]
HEPEATEFI [ON/OFF] .
FISSI. RSSI!
nx [xxx]...
RXLEVEL [—2o-
RXPAD [ON/OFF] .
SCD [0-255]
SER ..... ..
SHOW [PORT/DC/F'WFI]
|i |ns|al|anon and Operation Guide MDS 05-3488A01. Rev. 01
MDS 05—3438A01, Rev. 01
6.4
6.5
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SREV
STAT.
TEMP
TIME ﬂ'IME h .mm.ss AM/PM]
TOT [0-255]
TX [xxxx].
TXGAIN [ON/OFF] ......
TXLEVEL [—20~3, AUTO]
UNIT [10000—65000]... .
Configuration and Programming using the Front Panel
Switching LCD to Radio Conﬁguration Mode .........
Use of Control Buttons in Radio Configuration Mode
Making changes to radio functions.
Screen Descriptions
Group 1~Startup Screen and Menu Directory (page 65)
Group 2—Conﬁguration Screens (page 66)
Group 3—Diagnostic Screens (page 74) ..
Group 4—Event Log (page 76).
Start~up Saree
Menu Directory
Access Level ..
Transmit Frequency .
Receive Frequency ..
Output Power Setting
Modem.
Baud Rate/Format.
Emphasis....
Clear To Send Delay.
Push to Talk Delay
Soft Carrier De—key Delay
Transmit Timeout ......
Transmit Timeout Duratio
RX Timeout [0~1 440].
Repeater Mode
Continuous Keying
Manual Key ..
Unit Address
Key On Data.
Receive Level...
Transmit Gain
Receive Pad.
Alarm Masks
Display Contras
Backlight Intensity
Set Owner Name
Set Owner Message
Set Time.
Installation and Operation Guide iii
minimum:
aural-mm
mu
mmuwms mm;
Set Date....
Active Radio Status ......
Receive Signal Strength
SIN Ratio
Radio Selection
Transmitter Statu
Show Temperature and Voltages
Serial Number....
Software Revision.
Program Standby Uni
Event Log.
Clear Logs
7.0 TROUBLESHOOTING
7.1 Troubleshooting with LED Indicators ..
7.2 Troubleshooting Using a Connected PC
7.3 Troubleshooting Using the LCD Display
Diagnostic Tests.
Event Codes ..
7.4 Replacing Assemblies .
Transceiver Board and Power Supply Assemblies.
Front Panel.........
80 TECHNICAL REFERENCE,,.
8.1 Technical Specrfications .
8.2 RF Propagation Planning
Fresnel Zone Clearance .
Earth Curvature
Fade Margins.
Calculating Path Loss.
8 3 Formulas for System Planning
Free Space Path Loss.
Parabolic Antenna Gain.
Fresnel Zone Boundary.
Theoretical Signal Strength.,.
Probability of System Fading
8.4 Bench Testing Setup .....
8.5 Duplexer and Helical Filter Retuning .
8.6 dBm-Watts»Volts Conversion Chart
Copyright Notice
This Installation and Operation Guide and all software described herein
are protected by copyright: 1998 Microwave Data Systems, a division
of California Microwave, Inc. All rights reserved.
Microwave Data Systems reserves its right to correct any errors and
omissions.
iv Installation and Operation Guide MDS 05-3438A01. Rev. 01
Operational Safety Notices
The radio equipment described in this guide RF Exposure
uses radio frequency transmitters. Although the
power level is low, the concentrated energy
from a directional antenna may pose a health (( . ))
hazard. Do not allow people to come in close
proximity 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“ adherence to this internationally accepted
quality system standard provides one of the strongest assurances of
product and service quality available.
MDS Quality Policy Statement
We, the employees of Microwave Data Systems, 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 cus-
tomers.
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 involve»
ment.
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 addi»
tional questions or need an exact specification for a product, please con—
tact our Customer Service Team using the information at the back ofthis
guide. In addition, manual updates can often be found on the MDS Web
site at www.microwavedata.com.
MDS 0534361401, Rev. 01
Installation and Operation Guide v
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vi lnstallaﬁon and Operation Guide MDS 05-3438AO1, Rev. 01
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1.0 INTRODUCTION
This guide presents installation and operating instructions for the
MDS 9790 master station radio. It begins with an overall description of
the radio’s features and is followed by the steps required to install the
radio and place it into normal operation.
Additionally, the guide contains troubleshooting tips for resolving
system difficulties that may be encountered. After you install the radio,
keep this guide near the radio for future reference.
2.0 PRODUCT DESCRIPTION
The MDS 9790 (Figure 1) is a full-duplex data telemetry radio suitable
for use as a master in a Multiple Address System (MAS) and Supervi-
sory Control and Data Acquisition (SCADA) applications. The
MDS 9790 uses microprocessor control and Digital Signal Processing
(DSP) technology to provide highly reliable communications even
under adverse conditions.
The MDS 9790 operates between 800 MHz and 960 MHz, and is
intended to be used in systems with MDS 9710 remote radios. The radio
is available in either a redundant conﬁguration or a non-redundant con—
figuration. Refer to Section 21, Redundant versus Non-redundant, on
page 2 for further description.
Figure 1. MDS 9790 master station
All radio assemblies, including the duplexer and power supply, are con-
tained in the radio’s compact (ZRU high) enclosure. The radio‘s com-
pact size allows it to fit into most existing systems, in either tabletop or
rack—mounting arrangements. Connectors are provided on the rear panel
for easy connection of power, antenna, data, alarm and diagnostic func-
trons.
MDS 05-3438A01, Rev. 01
Installah‘on and Operation Guide 1
MICHEIW‘NE
mm
mm-
2.1 Redundant versus Non-redundant
A redundant configuration means that the master station has two com-
plete transceiver systems installed in the enclosure. In the event of a pri-
mary transceiver system failure, the controlling logic causes a
switch—over to the stand—by transceiver system. The redundant trans-
ceiver configuration has a stand—by transceiver that is constantly oper-
ating and its operational readiness is monitored However, the
transmitter power amplifier in the stand-by transceiver is not operating
when it is in stand-by mode.
In a nonfredundant configuration, there is only one transceiver system
installed in the enclosure, and back~up transceiver operation is not pos-
sible.
2.2 Applications
The MDS 9790 is designed for point-to—multipoint data transmission in
oil and gas pipeline communications, lottery systems and telecommuni-
cations systems. 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.
Basic MAS Master Station Operation
Figure 2 shows a typical point-to-multipoint system using an MDS 9790
radio.
The most basic system consists of a central master station and several
associated remote units, as shown in Figure 2.
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Figure 2. Typical MAS network
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RTU swe OFF
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REMOTE Rama
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Installation and Operation Guide MDS 05-3438A01. Rev. 01
em?“
Repeater and Polling Remote Operation
An MAS system using repeater and polling-remote radios is shown in
Figure 3. Notice that the polling remote radio is operating in half-duplex
mode and the repeater is operating in full-duplex mode.
mm mus
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ex W
Knows fume
RTU SW: 05
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Rx mun
RTU 5:2va men
am an camiwtwsn
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rx wan mama
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taxman
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Figure 3. Typical repeater and polling-remote network
Simplex and Switched Carrier Operation
System-wide simplex operation is achieved by switching the master sta-
tion carrier on to transmit, then off to receive, The same frequency is
used for both transmit and receive.
Switched carrier, half-duplex mode is also achieved by switching the
master Station carrier on to transmit, then off to receive. However, dif—
ferent frequencies are used for transmit and receive,
2.3 Features
Reliability is a hallmark of the MDS 9790 design. The radio employs a
one-piece transceiver board which minimizes RF losses and eliminates
the need for inter-board cabling. This also allows easy plug-in replace-
ment should servicing become necessary.
H“
MDS 05-3438A01. Flev. 01
installation and Operation Guide 3
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In addition, the optional redundant version of the radio includes redun-
dant transceiver boards and power supply modules that automatically
become active in the event of a failure in either of the transceivers or
power supplies. This ensures continued operation in the event of most
radio failures
The following list highlights many of the radio’s key features. For a full
listing of specifications, see Section 8.1, TechnicalSpectﬁcations, on
page 74.
' Operation from 24, 48 Vdc or 110 to 240 Vac mains
- Built-in diagnostics (local and remote)
' Front panel configuration of all operating parameters
- Time stamping of alarms and major events
' Software available for PC diagnostics and control
(including ﬁrmware upgrade capability)
' Flexible mounting with connectors on front or rear
2.4 Accessories
The radio can be used with one or more of the accessories listed in
Table 1. Contact Microwave Data Systems for ordering information.
Table 1. Transceiver accessories
Option Description MDS P/N
Diagnostics and Computer software that allows PC control of Contact MDS
Control Software the radio for diagnostics, control and
software upgrades,
Diagnostic and Allows connection of a PC for diagnostics 97-1971A04
Control Interface and control of the radio (DE-9 to DB-B).
Cable
Auxiliary Front Panel Allows rack mounting oi the detachable front 82-3189A01
Mounting Bracket panel.
2.5 Model Number Codes
The radio model number is printed on the serial number label, which is
affixed to the radio chassis. Figure 4 shows the significance of the char-
acters in the model number string for standard modelst Contact MDS for
specific information on optional configurations of the radio.
installation and Operation Guide MDS 05-3438A01, Rev. 01
THIS INFORMATION IS
SUBJECT TO CHANGE
DO NOT USE THIS
INFORMATION FOR
PRODUCT ORDERING.
mam
mm»... H ,
ms
To be supplied
Figure 4. Model number codes
2.6 Terms and Abbreviations
If you are new to digital radio systems, some of the terms used in this
guide may be unfamiliar The glossary below defines many of these
terms and will prove helpful in understanding the operation of the trans-
ceiver.
BERT—Bit—error rate test. The results of a BERT are normally
expressed as a ratio (power of 10) ofthe number of bits received in error
compared to the total number received.
BER—Bit-error rate, See also BERT.
Bit—Binary digit. The smallest unit of digital data, often represented by
a one or a zero. Eight bits usually comprise a byte.
bps—Bits-per-second. A measure of the information transfer rate of
digital data across a communication channel.
Byte—A digital “wor ” usually made up of eight bits.
dBi—Decibels of gain relative to an isotropic radiator. (A hypothetical
antenna which radiates equally in all directions.) Used to express
antenna gain.
dBm—Decibels relative to one milliwatt. An absolute unit used to mea-
sure signal power, as in transmitter power output or received signal
strength.
R.
MDS 05-343BA01, Rev, 01
Installation and Operation Guide 5
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DCE— Data (circuit terminating) Communications Equipment. In data
communications terminology, this is the “modem” side of a com-
puter-to-modem connection The transceiver is a DCE device which is
designed to connect to a DTE device.
Decibel (dB)—A measure of the ratio between two signal levels. Fre-
quently used to express the gain or loss of a system.
DSP—Digital Signal Processing. Advanced circuit technique to
increase radio performance, primarily in modulation and demodulation
DTE—Data Terminal Equipment. In data communications termi-
nology, this is the computer side of a computer-to-modem connection.
(Connects to the DCE device.)
Fade Margin—The maximum tolerable reduction in received signal
strength which still provides an acceptable signal quality. This compen-
sates for reduced signal strength due to multipath, slight antenna move-
ment or changing atmospheric losses. Expressed in decibels.
Frame—A segment of data that adheres to a specific data protocol and
contains definite start and end points. It provides a method of synchro-
nizing transmissions
Fresnel Zone—A point of maximum width or girth of the transmitted
radio signal. Obstructions in this region (the “first Fresnel zone”) can
have a detrimental effect on reception quality. As a general rule, 60 per-
cent of the first Fresnel zone should be free of obstructions in a
well-designed system. (Additional considerations are also required
when planning a microwave path. A detailed discussion ofthe subject is
presented in Section 8.2, RF Propagation Planning, on page 75.)
Half-Power Beamwidth—The customary way of measuring the width
of a directional antenna‘s radiation pattern. This beamwidth is measured
in degrees between the ha]f»power points (the point at which the power
is reduced 3 dB with respect to the main beam).
kbps—Kilobits-per-second.
Multipath Fading—Signals arriving at the receiver out of phase, which
have a tendency to cancel each other. It is caused by reﬂections of the
transmitted wave and results in distortion at the receiver or weak
received signal strength.
RSSI—Received signal strength indication. Expressed in dBm.
SNR—Signal-to—noise ratio. Expressed in decibels (dB).
6 Installation and Operation Guide MDS 05»3438A01, Rev. 01
ﬁt“
SWR~Standing Wave Ratio. A parameter related to the ratio between
forward Iransmitter 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).
3.0 INSTALLATION PLANNING
The installation of the transceiver is not difficult, but it does require
some planning to ensure station reliability and efficiency. This section
provides tips for selecting an appropriate site, choosing antennas and
feedlines, and minimizing the chance of interference. This material
should be reviewed before beginning equipment installation.
3.1 General Requirements
There are three main requirements for installing the transceiver—ade-
quate and stable primary power, a good antenna system, and the correct
interface between the transceiver and the data device. Figure 5 shows a
typical station arrangement.
OMNIDIRECTIONAL
I ANTENNA
HOST COMPUTER
DIAGNOSTICS
COMPUTER
LOW LOSS
COAXIAL CABLE
T0 INPUT
POWER SOURCE
Figure 5. Typical station arrangement
MDS 05-3436A01, Rev. 01 Installation and Operation Guide 7
Site Selection
For a successful installation, careful thought must be given to selecting
the site for the master station and the remote radios. Suitable sites should
offer:
' An antenna location that provides an unobstructed path to all the
remote radios in the system
- A source of adequate and stable primary power
' Suitable entrances for antenna, interface or other required
cabling.
These requirements can be quickly determined in most cases. A possible
exception is the first itemfverifying that an unobstructed transmission
path exists. Microwave radio signals travel primarily by line-of—sight,
and obstructions between Ihe sending and receiving stations will affect
system performance.
If you are not familiar with the effects of terrain and other obstructions
on radio transmission, the following discussion will provide helpful
background.
Terraln and Signal Strength
A line-of-sight path between stations is highly desirable and provides
the most reliable communications link in all cases. A line-of—sight path
can often be achieved by mounting each station antenna on a tower or
other elevated structure that raises it high enough to clear surrounding
terrain and other obstructions.
The requirement for a clear transmission path depends on the distance to
be covered by the system. If the system is to cover only a limited dis
tance, say 5 km (3.1 miles), then some obstructions in the transmission
path may be tolerable. For longer range systems, any obstruction could
compromise the performance of the system, or block transmission
entirely
The signal strength at the receiver must exceed the receiver sensitivity
by an amount known as the fade margin (defined on page 6) to provide
reliable operation under various conditions.
Section 8.2, RF Propagation Planning, on page 75 includes a detailed
discussion of path planning, and should be reviewed before beginning
an installation. Computer software is also available for this purpose that
can greatly simplify the steps involved in planning a path.
On-the-Air Test
If you’ve analyzed the proposed transmission path and feel that it is
acceptable, an onvthe-air test of the equipment and path should be con-
ducted. This not only verifies the path study results, but allows you to
see firsthand the factors involved at each installation site.
8 Installation and Operation Guide MDS 05-3438A01, Rev. 01
(Ann-alum WWD'WE
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The test can be performed by installing a radio at each end of the pro-
posed link and checking the R551 value reported at the front panel LCD
screen of the radio. (See Front Panel Indicators on page 20 for proce-
dures.) If adequate signal strength cannot be obtained, it may be neces-
sary to mount the station antennas higher, use higher gain antennas, or
select a different site for one or both stations.
To prepare the equipment for an on-the-air test, follow the general
installation and operation procedures given in this guide and become
familiar with the operating instructions given in Section 5.0, START— UP
AND OPERATION, on page 20.
A Word About Interference
Interference is possible in any radio system, However, since the
MDS 9790 is designed for use in a licensed system, interference is less
likely because geographic location and existing operating frequencies
are normally taken into account when allocating frequencies.
The risk of interference can be further reduced through prudent system
design and configuration. Allow adequate separation between frequen-
cies and radio systems.
Keep the following points in mind when setting up your radio system:
1. Systems installed in lightly populated areas are least likely to
encounter interference; those in urban and suburban environments
are more likely to be affected by other devices operating in the 900
MHZ frequency band and adjacent services.
2. Directional antennas should be used at the remote end of the link.
They conﬁne the transmission and reception pattern to a compara-
tively narrow beam, which minimizes interference to and from sta-
tions located outside the pattern.
3. If interference is suspected from another system, it may be helpful
to use antenna polarization that is opposite to the interfering sys-
tem’s antennas. An additional 20 dB (or more) of attenuation to
interference can be achieved by using opposite antenna polarization.
3.2 Antenna and Feedline Selection
Antenna System
The antenna system is perhaps the most crucial part of the system
design. An antenna system that uses poor quality feedline, or is improp»
erly aligned with the companion site, will result in poor performance, or
no communication at all.
X“
MDS 0543438A01. Rev. 01
Instaltation and Operation Guide 9
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Generally speaking, an omni-directional antenna is used at the master
station site and the remote radios use directional antennas.
Microwave Data Systems can also furnish antennas for use with the
transceiver. Consult your MDS representative for details.
Feedline Selection
For maximum performance, a good-quality feedline must be used to
connect the radio to the antenna. For short—range transmission, or Where
very short lengths of cable are used (up to 8 meters [26 feet]), an inex-
pensive coax cable such as Type RG—213 may be acceptable.
For example, 100 feet (30 meters) of RG—SSA/U Cable (commonly used
for frequencies below 100 MHz) has an insertion loss of 5 dB at 450
MHz. A 500 milliwatt transmitter operating into such a feedline would
produce only 160 milliwatts at the antenna; a similar loss in receiver
sensitivity would result, and no amount of gain within the receiver can
recover the signal lost in the feedline.
On the other hand, a 100 foot (30 meters) length of 15/ 5 inch cable has a
loss of 0.52 dB at the same frequency, but its cost is many times greater
than RG-SSA/U.
For systems covering short distances, feedline loss is relatively unim-
portant, and 6 dB or more ofloss may be completely acceptable. For sys-
tems designed for maximum range however, each dB of loss directly
affects signal-tovnoise ratio at the receiver. It is good practice to keep
feedline losses as low as possible and certainly under 3 dB. Remember
that for each 3 dB of feedline loss, half the transmitter power is lost, and
twice the receive signal power is needed to produce the same
signal-to-noise ratio.
RG-8A/U is a widely available and inexpensive feedline that is suitable
for systems with short ranges or those with short feedlines. For longer
feedlines and lower losses, Andrew HELIAXTM semi-rigid coaxial cable
or similar products are a good choice. Table 2 shows the length of var»
ious types of cable and the resulting degradation in signal strength‘
Mount the antenna and feedline securely to the supporting structure to
avoid damage from wind and ice loading. Refer to the instructions pro-
vided by the antenna and feedline manufacturers to ensure a safe and
reliable installation.
Table 2. Feedline loss chart (900 MHz)
10 Feet 50 Feet 100 Feet 500 Feet
Cable Type (3.05 (15.24 (30.48 (152.4
Meters) Meters) Meters) Meters)
RG»8A/U 0.85 dB 4.27 (15 8.54 dB 42.70 dB
Va in. HELIAX 0.23 dB 1.15 dB 2.29 US 11.45 dB
10 Installation and Operation Guide MDS 05—3435A01, Rev, 01
Table 2. Feedline loss chart (900 MHz) (Continued)
10 Feet 50 Feet 100 Feet 500 Feet
Cable Type (3.05 (15.24 (30.48 (152.4
Meters) Meters) Meters) Meters)
7/5 in. HELIAX 0.13 dB 0 54 dB 1.28 E18 8.40 dB
1‘/4in. HEUAX 0.10113 0.48 dB 0.95 dB 4.75118
15/8 in. HELIAX 0.08 dB 0.40 dB 0.80 (15 4.00 dB
4.0 INSTALLATION PROCEDURES
This section presents the steps necessary for installing the radio and con-
necting it to associated equipment. After completing these steps, the
radio will be ready for in-service operation.
4.1 Unpacking and Inspection
Figure 6 shows a typical transceiver shipment. Check the contents
against the packing list secured to the outside ofthe shipping box.
Accessories and spare parts kits, if any, are wrapped separately. Inspect
all items for signs of damage. Save all packing materials in case you
need to ship the radio in the future.
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Figure 6. Typlcal shipment contents
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 11
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4.2 Mounting the Radio
The radio should be located in a relatively clean, dust-free environment
that allows easy access to the rear panel connectors as well as the front
panel controls and indicators. Air must be able to pass freely over the
healsink on the rear panel.
Figure 7 shows the mounting dimensions of the radio. Most commonly,
it is installed in a 2U 3.5 inch (88.90 mm) rack-mount configuration, but
it can also be installed in a simple tabletop arrangement if desired.
Rack Mounting
To rack-mount the radio, use the supplied mounting brackets (MDS P/N
82-3184A01) to secure the chassis to the rack cabinet. The brackets can
be attached at any of four points on the sides of the enclosure—front,
back. middle facing front, and middle facing back (see Figure 7). This
ﬂexibility ensures compatibility with most rack mounting arrangements.
Tabletop Mounting
As an alternative to rack mounting, the radio can be placed on any sturdy
shelf or tabletop that will support the weight of the unit. Adhesive-
backed rubber feet are provided with the radio for use in tabletop instal-
lations. These should be placed underneath the chassis near each corner
to prevent scratching of the mounting surface.
14.29 inches
(363 mm)
1 7.2 inches
(437 mm)
Figure 7. Mounting dimensions and bracket details
Remote Front Panel Mounting»0priona/Gunﬁgurariun
if desired, the front panel can be detached from the radio and mounted
separately to the rack cabinet. This option is needed in rack-mount
installations where all connections and control will be performed from
one side of the unit. An Auxiliary Mounting Plate (PIN 82-3189A01) is
available for this type of mounting.
12
Installation and Operation Guide MDS 05~8438A01, Rev. 01
To remove the front panel from the radio and re-mount it to the Auxil»
iary Mounting Plate, follow these steps:
1. Detach the panel from the radio by grasping it ﬁrmly along its
bottom edge and pulling away from the radio chassis (Figure 8).
2. Release the modular connector and cable from the back of the panel.
34 Plug the connector into an in»line splice connector (MDS P/N
73-1155A09).
4. Snap the splice connector into the front of the chassis at the square
cut-out.
Figure 8. Front panel removal
5. Snap the front panel onto the Auxiliary Mounting Plate in the same
way it was attached to the main radio chassis.
64 Mount the Auxiliary Mounting Plate to the rack cabinet just above
(or below) the radio chassisi
74 Attach the extension cable (MDS P/N 03-2198A04) between the
front panel modular connector and the in-line splice connector on
the radio chassis.
MDS 05-3438A01, Rev. 01 Installation and Operation Guide 13
mm...
m m
m.
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
14
4.3 Primary Power
Before connecting primary power to the radio, verify that power source
matches the power supply operating range and type of service (AC or
DC). Improper voltages may damage the equipment. The radio has
either a nominal 24 volt DC, 48 volt DC, or a 110/220 Vac power sup»
ply module (see “Technical Specifications” on page 74 for voltage
ranges). The input voltage is marked on the module at the rear of the
radio,
AC-Powered Units
AC-powered radios are designed to operate from 100 to 240 Vac (50/60
Hz) primary power. No special configuration is required to operate the
radio anywhere within the input voltage range. An AC power cord is
supplied with these units. If the radio is equipped with the 110—240 Vac
power supply option, the unit can be powered from a DC source between
120 Vdc to 370 Vdc as well.
DC~Powered Units
Figure 9 shows a rear view of the DC power supply. Connection to the
DC power supply is made with a three-conductor plug-in terminal strip.
The radio can be operated in either a positive or negative ground config-
uration. The center pin of the connector is not connected in the radio.
\n; SWITCH
DC POWER lNPuT
Figure 9. Rear view showing 00 power supply
4.4 Antenna System
Antenna Installation
The antenna manufacturer’s installation instructions should be followed
for proper operation of the antenna. Using the proper mounting hard—
ware and bracket ensures a secure mounting arrangement with no pat-
tern distortion or detuning of the antenna.
Installation and Operation Guide MDS 05-3438A01. Rev, 01
M' ms
Regardless of the antenna make, mount the antenna in the clear, as far
away as possible from obstructions such as buildings, metal objects and
dense foliage. Choose a location that provides a clear path in the direc-
tion of the associated station.
NOTE: Strong fields near the antenna can interfere with the operation
of low-level circuits and change the values of the data being
received. For this reason, the antenna should be moumed at
least 3 meters (10 feet) from the radio and other electronic
equipment.
Feedline Installation
A low—loss feedline is recommended for use with the radio. Section 3.2,
Antenna and Feed/int? Selection, on page 9 provides suggestions for
choosing the correct feedline for your installation. Whatever cable is
used, it should be kept as short as possible to keep signal losses to a min»
tmum.
When installing the feedline, take care not to kink, twist or stretch the
cable» After installation, fasten the cable securely to the antenna tower
or other supporting structure.
A Type N connector is required to connect the feedline to the radio, The
feedline connectors must be installed in accordance with the manufac-
turer’s instructions. Follow the manufacturer’s recommendations for
weatherproofing connectors that will be installed outdoors.
lflarge-diameter, semi-rigid coaxial cable is used for the feedline, insert
a short length of ’/ t inch SuperflexTM Cable (MDS P/N 97-1677A28) or
other low—loss ﬂexible cable between the radio and the feedline. This
ﬂexible interface eliminates light bends in the feedline and reduces
stresses on the feedline and connectors. The ﬂexible section also allows
the radio to be mounted on slides and pulled out without placing undue
stress on the transmission line.
4.5 Interface Wiring Connections
All connections to the radio are made at the rear panel (Figure 10). In
addition to the power and antenna connections already discussed, there
are three interface connectors: J l—Diagnostic Port, JZ—Alarm, and
JS—El Data.
MDS 05—3438A01. Rev. 01
Installation and Operation Guide 15
mm...
m m-
m...
11
-" mes AUDtO
D'“§”°57’° CONNECTOR ho
CRT AuxRM
(Ba?) CONNECTOR
o Wiwmnsumv o ADDtYiQNAL nsnswx 0
W WWW (Fmiemdcanﬁgamncns;
O u 0
POWER PO‘NER ANTENNA J3 HEATSINK
WOFF iNPUT CONNECTOR DATA
* (ween) CONNECTOR 5x7 DUPLEXER
“W” SW" (new) PORT (DFTiONNJ
Figure 10. Rear panel of MDS 9790
Data Connector
The data connector (available on the rear ofthe radio) is the main system
data interface and typically connects to the host computer.
Refer to Figure 11 and Table 3.
1|3 1|
© oe°o°o°o%°o°o°o%oo°o°o?7@
25 14
Figure 11. Data connector
Table 3. Data interface pinouts
ﬁ—h
Pin Input/
Number Output PinDescription
1 ~ Protective Ground. Connects to ground (negative supply
potential) on the radio‘s PC board.
2 IN TXD—Transmitted Data. Accepts TX data from the connected
device.
3 OUT RXD—Received Data. Outputs received data to the connected
device.
4 W RTS-Request-to-Send Input. Keys the transmitter when FiTS
asserted.
5 OUT CTS—clear-Io-Send Output. Active alter the programmed CTS
delay time has elapsed.
6 OUT DSR—Dala Set Ready. Provides a +6 Vdc DSR signal through a
2.5 k!) resistor.
_——___
16 Installation and Operation Guide MDS 05-3438A01. Rev. 01
mm
mm...
2mm
Table 3. Data interface pinouts (Continued)
Pin Description
Signal Ground. Connects to ground (negative supply potential) at
radio‘s PC board.
DCD—Data Carrier Detect. Goes active when the radio detects
an on»irequency signal.
No Connection
No Connection
Receive Audio Output. Connects to the audio input of an
external (AFSK) modem. The output impedance is 500 52. and the
level is lactory set to suit most installations. Use Pin 7 for the
modem's return lead.
No Connection
No Connection
No Connection
Do not connect—Reserved ior luture use.
No Connection
Do not connect—Reserved for iuture use.
No Connection
14.0 Vdc Output. Provides a source at regulated voltage at 1 5
amperes for low—power accessories,
No Connection
No Connection
No Connection
No Connection
Do not connect—Reserved lor future use.
No Connection
Pin Input]
Number Output
7 ..
8 OUT
9 IN
10 OUT
11 OUT
12 IN
13 -
14 —
15 OUT
16 »-
17 -»
18 lN/OUT
19 OUT
20
21 OUT
22 ~
23 IN
24 --
25 OUT
Diagnostics
There is a 9-pin Dflype port on the rear panel of the radio that provides
radio system diagnostics information. The DiAGNOSTIC PORT is used to
control and perform diagnostics on the radio system from a connected
computer. The communication speed between the computer and radio is
9600 bps.
Figure 12 shows the EIA»574 (9-pin ElA-232) pin functions of the
DIAGNOSTIC POFiT as viewed from the rear panel of the radio. Connec—
tion to Jl can be made with a DB-9 male connector, available from many
electronics distributors.
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 17
— ”"'“’“‘”'
m m
m,
PIN 5— GROUND
PIN 47 +5 Vde
PIN 3— TXD
PIN 2— HXD
UNUSED
UNUSED O O UNUSED
UNUSED PIN 7 RTS”
" Used when reprogramming the radio ﬁrmware with a PC.
Figure 12. J1 pin connections
Alarm Contacts and Battery Back-up Connections
J10 is a plugdn terminal strip that provides connections for optional
alarm circuits Figure 13 shows the function of each terminal as viewed
from the rear panel.
Terminals 1 and 2 provide relay contacts that close when a minor alarm
is encountered, Terminals 3 and 4 provide relay contacts that close when
a major alarm is encountered
The contacts are rated for 1 ampere at 60 V ac or dc.
MINOR ALARM MAJOR ALARM
RELAY RELAV
[NORMALLY OPEN) (NORMALLY OPEN)
EXTERNAL
BATTERY BACK-UP
CONNECTION
12,0 Vdc —15,0 Vdc
Figure 13. Alarm relay connections
18 Installation and Operation Gwde MDS 05-3438A01, Rev. 01
nun-”mu mam!
mm.
”imam m“!
4-Wire Audlo Connector
12 is a plug-in terminal strip that provides connections for 4-wire audio
circuits. Figure 14 shows the function ofeach termina as viewed from
the rear panel
Terminals 1 and 2 are for transmit audio input with a nominal 600 52
impedance Terminals 3 and 4 provide a receive audio output with a
nominal 600 $2 impedance PinsS and 6 provide a source for an external
keying source. Connecting pins 5 and 6 together keys the radio.
WW
TRANSMFT AUDIO
GOO OHM
RECEIVE AUDIO
600 OHM
EXTERNAL KEYLINE
GROUND TO KEY
RADIO
Flgure 14, 4-wire audio connections
4.6 Post Installation Checks
Before applying power to the radio, verify that:
' All connections are properly wired and secure
' Input voltage matches that of the installed power supply
- Antenna heading is preset in the direction of the associated
station.
This completes the installation of the radio. Section 50, STARFUP
AND OPERATION, describes the unit’s indicators and gives initial
startup procedures.
MDS 05-3438A01, Rev. 01 lnstallalion and Operation Guide 19
5.0 START-UP AND OPERATION
The transceiver is designed for continuous, unattended operation. Under
normal conditions, the only time operator intervention is required is to
power the unit up or down, or to change an operating parameter. This
section explains the use of the radio’s indicators and provides steps for
initial startup of the equipment.
5.1 Initial Startup
NOTE: The MDS 9790 is normally continuously keyed, and the radio
transmits when the power is switched on. Ensure there is a suit»
able load on the antenna connector before switching the power
on.
Operation of the radio can be started by simply connecting primary
power to the unit and setting the rear panel POWER switch to ON.
Normal Indications
When power is first applied, the following events occur in a normally
working unit:
- All indicators light brieﬂy and a beep is emitted
- The LCD (liquid-crystal display) shows the start—up screen,
similar to Figure 17
' The ACTIVE LED for the selected transceiver lights. (In a
protected version, the STBY LED also lights for the stand-by
unit.)
Maximizing RSSI
Since the master station almost always uses an omni-directional
antenna, maximizing signal strength is done at the remote sites where
directional antennas are typically used.
5.2 Front Panel Indicators
Refer to Figure 15 and the following text for an explanation of the front
panel indicators. The control buttons are described in Section 6.4, Con—
ﬁguration and Programming using the Front Panel, on page 524
20 InstaIIation and Operation Guide MDS 05-3438A01, Rev. 01
mam
nun-”mu
mu
Mlclnwm m5
Aecxoaee i i
/I l i i J
LED INDICATORS LCD DISPLAY PROGRAMMiNG AND
CONTROL BUTTONS
Figure 15. Front panel controls and indicators
LED Indicators
The basic operation of the transceiver can be checked by viewing the
LED Indicator panel. The top row of indicators shows the status of the
“A” transceiver; the bottom row shows the status of the “B” transceiver.
In a non-redundant master station, Transceiver B is the only radio
installed. On a redundant radio (spare transceiver and power supply
installed), the references given here apply equally to Transceiver A and
B.
Normally, only the green ACTIVE LED (and one of the yellow STBY
LEDs in protected radios) should be lit. All other red LEDS are alarm
indicators. If lit, they indicate a potential problem in the radio system.
Refer to Figure 16 and the text that follows for a detailed explanation of
the LED indicators.
_§-é§$21';“
A©©©©©©
ACTIVE srnv run- nxALn “(ALE mm
agooooo
sm mum mum TxALu mam
Figure 16. LED indicators
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 21
nuke-um mam
mu
Mic-Emil! mus
Table 4. Explanation of front panel LEDs
___—_————
LED Name Color Meaning When Lit
ACTIVE Green Transceiver board (A or B) is the selected unit.
STBY Yellow Transceiver board (A or B) is currently in stand-by mode.
(Functional on Protected version only.)
ALARM Red General fault not covered by the alarm categories below
(RX ALR. TX ALR. I/O ALFl)
RX ALR Red Difficulty receiving—may be due to an antenna problem.
receiver lauit, or other condition causing no or a weak
received signal level.
TX ALR Red Fault with the transmit circuitry, or the transmitter is
unkeyed.
IlO ALR Red The data rate or formal or data at the data interlaoe
connector is incompatible with the radio settings.
LCD Display
The LCD (liquid-crystal) display is used with the front panel controls to
view the radio‘s operating parameters. It may also be used to change
parameters, or to perform diagnostic functions to evaluate radio system
operation; but these functions are normally accomplished by connecting
a PC to the radio and running communications software (see Section 6.0,
DIAGNOSTICSAND CONTROL, on page 25).
At initial power-up, the LCD display shows the start-up screen
(Figure 17). After a period of time without any activity, the LCD display
darkens. The display can be restored by pressing any of the front panel
buttons
MDS 9798 MRS Radio
DUHERS NRME
DIANERS NESSRGE
Figure 17. Start-up screen (typical)
The start-up screen displays the owner’s name and message. Customers
typically use these fields to display the system name and site name.
The start-up screen is one of many screens that can be displayed by the
radio. Figure 18 is an overview of the LCD screens. Each screen dis-
plays a single radio function. The screens are divided into configuration,
diagnostics, and event log functions. Individual screens are described in
more detail in Section 6.5, Screen Descriptions, on page 54.
__—___—._—————-—-—
22 Installation and Operation Guide MDS 05—3433A01, Rev, 01
Start-up Screen
Menu Directory
Conﬁguration l>
DI-qnostlcs l>
A _.
O ESC
0 E50
AAVV
—> Axess Level Push to Talk Delay Urlll Address
Transmit Flequency Salt Gamer Dekey Delay Key On Dala
Receive Frequenw Tiansmlt Timeoul Data Buﬂenng
Output Power Selling Transmﬂ Tlmeoul Duraliori Transmll Level
Modem RX Tlmeaul Receive Level
Baud Rate/Format Repeater Made Transmll Gain
Emphasis continuous Kevmg Receive Pad
Clear (0 Sand Delay Manual Key Alarm Masks
Acllve REdlD Stalus Show Temperature amt Vellages
Receive Signal Slisngm Serial Numbei
S/N Rails Software Revision
Haalo Selectien Plogmm Standby Unit
Tlensmitler Slams
—e Event Log Clsar Logs
A OESC
Figure 18. LCD menu flowchart
MDS 05-3438A01. Rev. 01
Installation and Operation Guide
Display Comrasl
Backllgm Intensﬂy
Sel Owner‘s Name
Set Owner‘s Message
Set Time
Set Date
23
cm.
The LCD display has two modes: radio status (display only), and radio
conﬁguration These modes are changed by defining the user access
level. When the radio is powered on, the LCD is in display-only mode.
The LCD mode, and the brightness and contrast of the LCD display, are
the only changes that can be made to the radio in display-only model
The LCD display reverts to display-only mode after a period of time has
elapsed without a button press, and whenever the radio is powered back
On.
Navigation through the screens to display radio status is described in the
following section Changing the LCD to radio configuration mode, and
using the LCD screens to configure the radio, is described in Switching
LCD to Radio Conﬁguration Mode on page 52 and Making changes to
radiofunctions on page 53.
Programmlng and Control Buttons
The programming and control buttons are located at the far right side of
the front panel. They are used to navigate through the LCD screens and,
when the LCD is in radio configuration mode, to make changes to radio
operating parameters. Figure 19 shows a detailed view of these controls.
amen
ESCAPE
Figure 19. Programming and control buttons
' ENTER—When the start-up screen is displayed, pressing this
button displays the Menu Directory screen. Otherwise, the
ENTER button has no effect in display-only mode. Its use in
radio configuration is described in Use of Control Buttons in
Radio Conﬁguration Mode on page 53.
‘ ESCAPE—Displays the previous screen in the menu hierarchy
(start—up screen or menu directory) Its use in radio
configuration is described in Use of Control Buttons in Radio
Conﬁguration Mode on page 53.
' Up/down arrow buttons( A V )—On the start-up screen,
pressing the up or down arrow button displays the menu
directory. On the menu directory screen, the up and down arrow
buttons cycle a selection arrow (—;») through the main menu
items. On the individual menu screens, in display-only mode,
pressing the up or down arrow buttons displays the menu
directory.
24 Installation and Operation Guide MDS 05-3438AD1, Rev. 01
nun-mun "MC-“WM
tun
mum m.
- Left/right arrow buttons( < t> )—The left and right arrow
buttons cycle the display through the selected menu’s screens.
Navigating Through the LCD Screens
Figure 18 shows the menu hierarchy, as well as the button presses used
to display the start-up and menu directory Screens. (Navigation between
individual screens is done using the right or left arrow buttons.)
Displaylng the menu directory
To display the menu directory (Figure 20) when the start-up screen is
displayed, press the ENTER, up, or down arrow button once. The menu
directory lists the three main menus—Configuration, Dlagnostics, and
Event Log.
MOS 9796 MRS Radio
‘L‘Cont‘igurat-ion
Diagnostics
Event Log
Figure 20. Menu directory screen
Selecting a main menu item
Pressing the up or down arrow buttons cycles the selection arrow:
through the main menu items.
Displaylng the individual menu screens
When the selection arrow points to the desired menu, press the right or
left arrow buttons to cycle the display through the screens ofthat menu.
Each button press displays a new screen, until the entire menu has been
traversed and the menu directory is redisplayed.
To return to the menu directory from any menu screen, press the
ESCAPE, up or down arrow button once. Pressing any ofthese buttons
twice displays the start-up screen.
6.0 DIAGNOSTICS AND CONTROL
Configuration, control and diagnostics of the 9790 Master Station is per—
formed by connecting a Windows PC to a diagnostic port on the rear
panel of the unit (Figure 21). Many of the same functions provided by
this interface are available through the front panel interface, described
in Section 6.4, Conﬁguration and Programming using the Front Panel,
on page 52.
MDS 05~3438AOL Rev. 01
Installation and Operation GUide 25
cause-Nu ‘
,. n.““‘v.""‘“"
M “M svsrms
26
COMPUTER
RUNNING
MDS DIAGNOSTiCS
SOFTWARE
To DiAGNOSTiC
PORT (Jn
TO COMPUTERS
Rs~232 CONNECTOR
Figure 21. PC connected to the master station
This section explains how to connect a PC to the master station, and
describes the commands that can be used for programming and diagnos—
tics.
6.1 PC Connection
1. Connect a DB-9 to DB-9 cable (Figure 22) between the PC and the
radio’s rear panel DIAGNOSTIC PORT (Figure 23).
DB-Q MALE
CONNECTOR
T0 RADIO
DE-9 FEMALE
CONNECTOR
TO PC
Figure 22. PC Diagnostic Port cable (DB-910 DB-S)
Installation and Operation Guide MDS 05—3438A01, Rev 01
“um...“ Mlcnm
man-Nomi: A
Jt
DlAGNOSTIC
PORT
(use)
0 o E o
o B I” c G O o o
__ __ .
Figure 23. Diagnostic Port (rear panel)
2. Install a terminal emulation program, such as jroComm P us or
MDS diagnostics software (MDS PIN 03-3156A01), if such a pro-
gram is not already installed. Follow the on-line prompts and
instructions.
3. Launch the terminal program or diagnostics software.
The diagnostic port automatically detects the baud rate. The port
will work at 2400, 4800, 9600, 19.2K, and 38.4K baud.
4. Press the Enter key several times, at one-second intervals, until the >
prompt is displayed, indicating that the command interface is ready
to accept input. See Tables 5 through 7 beginning on page 29 for a
list of commands.
5. Type the command, then press the Enter key,
Command input is case—independent.
Use the Backspace key to delete characters.
The system displays one or more lines in conﬁrmation. These
responses are listed in Tables 5 through 7 beginning on page 29.
6. After exiting from the communication program, disconnect the PC
from the master station. as it may cause interference????
6.2 Command Summaries
The only critical commands for most applications are...?7?7?7?7??
However, proper use of the additional commands allows you to tailor the
transceiver for a speciﬁc use, or conduct basic diagnostics on the radio.
Tables 5 through 7 summarize master station commands.
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 27
autumnal mm
m‘u
Mlcnmv: mm,
' Table 5 (page 29) summarizes commands for setting radio
operating parameters and displaying status and other
information.
- Table 6 (page 31) summarizes diagnostic and testing
commands.
' Table 7 (page 31) summarizes commands for obtaining
information about the unit.
See Section 6.3 on page 32 for detailed command descriptions.
Most commands can be used in two ways. Typing only the command
(for example, MODE) displays the current information Typing the com-
mand, followed by a space and a parameter (for example, MODE R),
changes a radio setting.
The following conventions are used in the table:
- Command parameters, if any, are shown in brackets [ ]
following the command name.
- A string of lower-case x s in a command parameter stands for
a letter or number key.
- “xxx.xxxxx" stands for a decimal number. (The decimal point
position may vary.)
- “mm,” “dd,” and “yyyy” stand for month, day and year,
respectively. (The number of characters used for month and
year may vary.)
- “hh,” “mm,” and “55" stand for hours, minutes and seconds,
respectively.
28 Installation and Operation Guide MDS 05-3438A01, Rev. 01
MDS 05—3438A01, Rm]. 01
mm
a,“
u new: gem
Table 5. Operating parameter commands summary
COMMAND
ALARM
LCD SCREEN
Aeuve Rldlo Status
DESCRIPTION
Drsplay current awarm azalua m nexaaee‘mat
DEM/Is Page 52 oetaus Page 86 immat
AMﬂSK [0000 Alarm Mask! Se! 0! display the ma|0Y swarm mask
mo—FFFF FFFF] Dena/s Page 54
L Dshrls Page 31
ASENSE [HI/LO] Allrm Masks Set or dysp‘ay the sense or Ihe alarm bus
Derans Page 34 Dela/Is Page 54 (acme mgn a, acme law)
BAND [xxxxx Baud Run/Format Set of display Dommunicsmon aﬂﬂhu‘ES in!
uhcmxxmq s Dela/15 Page 59 data menace poll
De'm P599 35 Xxxxxzﬂaud me (1m 30g moo, 24m
4800‘ 5500, moo. sedan)
a=7 er 9 Aims has
am by none a fur odd, E to: even Danly
m m 2 slap bns
S=Synchmnous mnde
sun: [ON/OFF] Data surfermg Enables 01 meaales vecewed aa|a buﬁenng
Details Page 56 Details Page 52 0N=Seam1ess “(a
0FF=Fast byte throughput
cxsv [cu/om Continuous Ktymg Enema m msable cannnuous keymg
Dams age 36 Data/Vs Page 61 ONzconImunus keying “an”
OFF=CDnunuous keying msabwed
cram-2551 Clear Tn sena new-y Se! 01 msmay crs ueway. Semng a vame o! u
Delaus Page 37 Deans Page so keeps crs nmmally asserted.
DATAKEV [ON/OFF] Key On mu Toggles between key-mums arm keyenms
Dew/s Page 57 Defﬁll$ Page 52 0N=Kemn data
OFFzKey—on ms
DATE lmmm u wyy] Set Date Sel or dismay me cunem aa|e
Deraire Page as Details Page 55
nsvrcz [DCEICTS Cannnuaus leng {NE versions only15e| or dismay newee
KEV] Dwarfs Page sv behavior
Dams Page 3a DCE=bahaves like a DCE devrce (devaum
crs KEY=behaves vike a repEﬂIeI
DUMP mspvay en semngs
Delay/s Page as
EMP [ON/OFF] Emphasis Enaue uv aaanle emphasvs and neempnasls
Details Page co Dear/s Page 59
mn Set an operamng parameters m 094314" semngs
Dela/Is Page 40
LNA Dismay mw-nmae ampriﬁev cunem consump-
Delaf/s Page 41 non
LOG {cm} Evenl Log mamay Dr meat me even! lug
Derav’s Page 41 Delarls Page 6&
cu- Lugs
Derarfs Page 55
MODE [mm] set e: display operatmg made
Delay/s Page 42 M=Ma5ter
nzﬁemate
MODEM mane, BELL, Modem Sal at mspwey me radla's maeem lype. 01 Spec-
48005, sauna, Deans Page 59 ify analog mpul
umn 11
Delaer Page 4.1
Installation and Operation Guide 29
mm
m am
am
Table 5. Operating parameter commands summary (Continued)
COMMAND
NMASK [coco
LCD SCREEN
DESCRIPTION
Set or dlsplay (he minor alarm mask
Dem/s Page 50
oooo—FFFF FFFF]
umrls Page a
own nrsplay a llsl ol avallalﬂe cpllons and me cur—
Dexaus Page 44 rem slams of each-
Dlagmmlcs OFF
Premium Dplmns: OFF
1200 Baud: OFF
4500 Balm: on:
9500 Baud OFF
Pﬂ' [0-255] Push to Yalk D'Iay Sel or dlsplay PW delay
Delalls Page 45 DEIalls Page 60
pwrz [20-17] Ompul Powcr semng 591 or display forward power umpul semng
Dslalls Page 45 szalAs Page 55
RADIO we) Radio s-lmlon Sel er arsplay me asllve rauro
aerar/s Page 45 Details Page 55
HEPEATER [ON/OFF] Ripe-m Mod. Enable or dlsabla repealer mode
Derarls Page 45 Derarrs Page 51
nssL nssu necelve Signal Display recalved slgnal srrenglh lndlcatlnn <-50
Deralls Page 15 smngm datum-120 63m)
Dem/E Page 56
M [xxx] neeelve Frequency Sel ur drsplay receive lrequerrcy
Dewls Page 47 Details Page 55
HXLEVEL [40-7] Recewc LIN-I Set at dlsplay me analog audm reoelve level m
oerarls Page 47 Details Page 5: dBm
EXPAD (ON/OFF] Rncowe P-d Enable or dlsabla RX pad
Delalls Page 47 Dela/Ls Page 64
scn [0455] Son Currier m-key 591 W dlsplay sell camel dekey delay
Derarls Page 47 Del-y
SHOW [Pour/Dc/FWR]
mspray venous llems
DEB“ Page “5 sHow PORT CONNECTED TO HJH
SHOW DC DC |N xx! V
DC our x,x v
snow PWH RF POWER x! DBM
sun, sum 5m Rama Dlsplay srgnal—(orrmlse rallo (from usps charl-
Delarls Page 45 DEl‘ale Page 66 nel equallzer)
Range: 0 as or was as
STAT Acliv. Radlo smug msplay currenr alarm went aescriprrens
[ Delalrs Page 4g Dew/s Page 55
30 Installation and Operation Gulde
MDS 05—3438A01, Rev. 01
mam
uumn
mm
m m m,
Table 5. Operating parameter commands summary (Continued)
COMMAND CD SCREEN DESCRIPTION
TEMP snow Tempe iure ane temperature
Details Page 50 Veiiages
Detaili Page 57
TIME [TIME hh:mm:ss sex Tim. Sei a: dlsplay (he currem lime
AM/PM) Details Page 55
Dela/ls Page 50
70110255] Transmii Timeuul Set or display lime—cut limer delay
Dela/ls Page 51 Details Page 5a
Transmii Timeuui Durl-
iien
Delails Page 61
Tx [xm] Tranemli Fruquericy set or display transmil Irequermy
Details Page 57 Dew/s Page 58
sznm [ON/OFF] Transmlt Gsln Enable or disable 7x galn
Denna Page 51 Details Page 53
1stsz 1-204. hansmk Level 1-204, Sci D! display the aneiag aume lrarismll level lﬂ
AUTO] AUTO] dam
Details Page 52 Details Page 63
COMMAND
cms
LCD SCREEN
Table 6. Diagnostic and test commands summary
DESCRIPTION
Close diagnostics
Dela/Is Page 36
DKEY MInulI Key Disable transmlﬂsl
Delarls Page 36 Details Page 52
KEY Manual Key Enable iiansmmar
Deiaiie Page 41 Details Page 52
OPEN Open diagnoslics
Deiei/a Page 44
FROG lniiiexa repmgrammmg or me radio‘s lnlemal
Dela/Is Page 45 snﬁwale
Table 7. Owne
COMMAND
mm [xxxxx]
Decal/s Page 45
LCD SCREENS
sei Owner Men-go
Dena/ls Page 55
r and radio Informat on commands summary
DESCRIPTION
Sex of display owner message such as sysiam
name
own [m1
Details Page 45
SCI Owner Mum.
Delails Page 64
Sei 0! display owner name or Elle name
HREV
Dela/Is Page «a
Display haldwale revision numaei
MODEL
Dela/ls Page 42
Display muuei number iinciuaes TX/RX band
characleristlcs)
sen
Details Page 48
Serial Numb"
Derafls Page 67
Display serial numhe,
SREV
Details Page 49
smtwnie novixlen
Details Page 57
Display sewers revision mlolmaliﬂn
UNIT [I GOOD—65000]
Details Page 52
unit Address
Dem/s Page 52
Display umi adﬂress
MDS 05-3438A01, Rev. 01 Installaiion and Operallon Guide 31
momma Mic-m
mu
mzunwms m5
6.3 Detailed Command Descriptions
This section gives more detailed information for most of the commands
listed in the previous tables. The commands are cross-referenced to
descriptions of corresponding commands entered using the front panel
LCD display and control buttons using this symbol:
Data Buffering com-
mand, page 62
Most commands can be used in two ways. Typing only the command
(for example, MODE) displays the currently programmed data. Typing
the command, followed by a space and a parameter (for example, MODE
R), changes a radio setting. In this section, command parameters, if any,
are shown in brackets [ ] following the command name,
ALARM
Active Radio Status com-
mand, page 66
The ALARM and STAT commands report on current alarms. ALARM pro-
vides alarm information in concise, two-line format; alarm codes are
summarized in hexadecimal format. STAT (described on page 49)
includes a text message describing each alarm.
The first line of the response to the ALARM command is a simple message
indicating whether or not alarms are present. The second line is a hexa-
decimal numeric code representing the system alarm state. Examples of
responses are:
N0 ALARMS PRESENT
CODE: 0000 0000
MINOR ALARMS PRESENT
CODE: xxxx xxxx
MAJOR ALARMS PRESENT
CODE: xxxx xxxx
Each bit of the hexadecimal response code represents a unique alarm
event. The first 4-digit number indicates major alarm conditions; if there
are no major alarms, this number is 0000, The second 4-digit number
represents minor alarm conditions; if there are no minor alarms, this
number is 0000.
32 Installation and Operation Guide MDS 05-3438A01. Rev, 01
Wﬂuu '
"11‘va
~ mm m.
Code values for individual major alarm conditions are given below:
Table 8. Hexadecimal values for major alarm conditions
Event
Alarm Code Number
Description
4000 1 .The hardware configuration disagrees with the sottware.
For example. this may be caused by attempting to run
MDS 2790/9790 software in an MDS 9810 radio.
0800 4 One or both or the programmable synthesizers is reporting
an “out or look“ condition
0100 7 One or more at the radio's internal voltage regulators is
reporting a failure, The radio will not work.
0080 5 The system has not been calibrated Factory calibration is
required tor proper operation of the system
0040 9 The MCU was unable to properly program the DSP. (This
message will not normally be seen, because the system
will reboot.)
0020 10 The MCU was unable to properly program the system to
the appropriate EEPROM defaults There may be a
hardware problem.
0010 11 A ventioation procedure performed al startrup failed,
There may be a digital hardware problem.
Code values for individual minor alarm conditions are given below:
Table 9. Hexadecimal values for minor alarm conditions
Event . ,
Alarm Code Number Description
8000 is The unit address has not been programmed.
4000 17 A data parity fault has been detected on the D525. This
usually means there is a parity setting mismatch between
the radio and the FlTU.
2000 18 A data framing error has been detected on the 0525. This
sometlmes means there is a baud rate mismatch between
the radio and the RTU,
---- 0040 25 The 5.6 volt power regulator output is out of tolerance ll
the voltage is too lar out-oi-tolerance the radio may not
work.
0020 26 The DC input supply voltage is out ol tolerance. If the
supplyvollage is too tar out of tolerance, the radio may not
work.
0001 31 The transceiver’s internal temperature is approaching an
out—ot-toleranoa condition lithe temperature dritts outside
ol the recommended operating range. the radio may not
work.
MDS 05-3438AO1, Flev. 01 Installation and Operation Guide 33
“mums
uumum.
mu
”mum mm
AMASK {0000 OOOO—FFFF FFFF]
Alarm Masks command,
page 64
The AMASK and NMASK (page 44) commands display or set which alarms
are classified as major and minor, respectively.
Entering the AMASK command alone displays the current setting of
major alarm conditions in hexadecimal format.
Entering the AMASK command followed by an eight-digit hexadecimal
number reprograms the specified alarm conditions to trigger major
alarms.
The AMASK command can be used to tailor a radio’s alarm response. For
example, a major alarm at a Redundant Station causes switch—over to the
other transceiver. By reconfiguring a minor alarm as a major alarm,
switch-over can be forced at the occurrence of a (formerly) minor alarm
condition.
The eight-digit hexadecimal number used as the command parameter is
used to classify up to 32 events as major or minor alarms, or disable
alarm notification for an event. (See Table on page 49 for a list of
events.) The hex value for the mask corresponds to the hex value for the
ALARM command (see the ALARM command description). 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 and request
Application Bulletin 98002.
ASENSE [HI/L0]
Alarm Masks command.
page 64
The ASENSE command displays or sets 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 L0
resets the alarm output to active high or low. The default for transceivers
is active high. The default for Redundant Stations is low, and must
remain so for the automatic switch-over feature of the radio to function
properly.
34 Installation and Operation Guide MDS 05—3438A01, Rev. 01
whim
BAUD [xxxxx abc]/[xxxxx] S
Baud Rate/Format com-
mand, page 59
The EAUD command displays or sets the communication attributes for
the DATA INTERFACE port. (The command has no effect on the R141
DIAGNOSTICS) port.)
Entering the BAUD command alone displays the baud rate along with
asynchronous data attributes or “S" for synchronous operation. Entering
the EAUD command followed by one or more parameters:
BAUD xxxxx am:
or
BAuD xxxxx S
resets the data port attributes. The first parameter, xxxxx, is baud rate.
Baud rate is speciﬁed in bits-per-second, and must be one of the fol-
lowing speeds: 110, 300, 1200, 2400, 4800, 9600, 19200, or 38400. In
the worst case, the radio will always accept a minimum ofSOO data bytes
in a single continuous data transmission. At baud rates of 4800 bps or
less, the radio can support unlimited continuous data transmission.
The second parameter of the BAUD command is either a 3-character
block specifying asynchronous data attributes:
a = Data bits (7 or a)
b = Parity (N for None, 0 for Odd, E for Even)
I: = Stop bits (1 or 2)
or a single letter “S,” specifying synchronous operation
The factory default setting is 4800 baud, 8 data bits, no parity, 1 stop bit
(Example: aaoo am).
NOTE: 7Nl, 802, and 8122 are invalid communication settings and are
not supported by the transceiver.
a“
MDS 05-3438A01, Rev. 01 Installation and Operation Guide 35
-ea.m
BUFF [ON/OFF]
Data Buffering com—
mand. page 62
This command displays or sets the received data handling mode.
Entering the BUFF command alone shows whether the mode is seamless
(ON), or fast byte throughput (OFF). Entering the BUFF command fol—
lowed by a parameter resets the received data handling mode. The UN
parameter sets the radio to seamless data mode. The OFF parameter sets
the radio to fast byte throughput mode. The default is seamless data
mode.
The setting of this parameter affects the timing of received data sent out
the DATA INTERFACE connector. Data transmitted over the air by the
radio is unaffected by the BUFF setting.
If data buffering is set to OFF, the radio will operate with the lowest pos-
sible average latency. Data bytes are sent out the DATA INTERFACE port
as soon as an incoming RF data frame is disassembled. Average and typ-
ical 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 will operate in a seamless mode. That
is, data bytes will be sent over the air as quickly as possible, but the
receiver will buffer the data until enough bytes have arrived to cover
worst case gaps in transmission. The delay introduced by data buffering
may range from 71777777??? to 7????????? ms, but the radio will not
create any gaps in the output data stream. This mode of operation is
required for protocols such as MODBUSTM 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]
.* Continuous Keying com-
mand. page 61
The CKEY command enables or disables continuous keying, and
instructs the remote transceivers to synchronize with the master radio.
When CKEV is enabled (ON), the radio is continuously keyed. The CKEV
command is normally enabled when the radio is in a full-duplex master
configuration.
CLOS
This command ends a diagnostics session. (See also OPEN on page 44.)
36 Installation and Operation Guide MDS 05-3438A01. Fiev. 01
crs [0-255]
Clear To Send Delay
command, page 60
This command displays or sets the timer value associated with the CTS
line response. Entering the CTS (Clear-to-Send) command without a
parameter displays the timer value in milliseconds. Entering the CTS
command with a parameter ranging from 0 to 255 sets the timer value in
milliseconds The timer value function depends on the radio’s operating
mode (DCE or CPS Key). See the DEVICE command for more informa-
tion about these operating modes.
When the radio is in DCE mode, the timer specifies how long to wait
after the RTS line goes high before asserting the CTS line. A timer value
of zero means that the CTS line will go high immediately following
RTS.
When the radio is in CTS Key mode, the timer specifies how long to
wait after asserting the CTS before sending data out the DATA INTER»
FACE 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,
depending on how other operating parameters are configured.)
DATAKEY [ON/OFF]
Key On Data command,
page 62
This command displays or sets the key—on-data mode. In key~on-data
mode, the radio will automatically key itself whenever input data arrives
on the DB25 port. In key-on-RTS mode, the radio will only key in
response to an RTS or PTT signal (or the KEY command)
Entering the DATAKEY command alone shows whether the key-on-dara
mode is key-on-dala (on) or key-on-RTS (OFF). Entering the DATAKEY
command followed by a parameter controls whether or not the radio will
automatically key on receipt of data. The ON parameter sets the radio to
key-on-data mode. The OFF parameter sets the radio to key-on-RTS
mode. The default mode is key-on-data.
Note that key-on-data mode is only applicable when the input data
source is digital. When the input data source is analog, the DATAKEY set-
ting is irrelevant.
MDS 05-3438A01, Flew. 01 Installation and Operation Guide 37
“um”... Mics-1mm
M mm
mm" m
DATE [mmm dd yyw]
Set Date command,
page 65
This command sets or displays the date. (See also TIME [TIME
Ith:mm:s.r AM/PM] on page 50.) Enter the command without any
parameters to display the date. Enter the command in the following for-
mat to reset the date:
DATE mmm dd yyyy
where mmm is a three—character abbreviation of the month:
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
dd is a two-digit number from 01 to 31 representing the date, and
yyyy is the year.
DEVICE [DCE/CTS KEY]
Continuous Keymg com-
mand. page 61
This command sets or displays the radio’s device behavior — DCE
mode, or CTS Key mode. Entering the DEVICE command without a
parameter displays “DCE” or “CTS KEY.” Entering the DEVICE com-
mand followed by the parameter DCE or crs KEV resets the radio’s
behavior.
The default device behavior is DCE. In this mode, CTS will go high fol-
lowing RTS, subject to the CTS programmable delay time, Keying is
stimulated by the input of characters at the data port. Hardware flow
control is implemented by dropping the CTS line if data arrives faster
than it can be transmitted.
If CTS KEY is selected, the radio is assumed to be controlling another
radio, such as in a repeater system. The RTS line is ignored, and the CTS
line is used as a keyline control for the other radio. CTS is asserted
immediately after the receipt of RF data, but data will not be sent out the
DATA lNTERFACE port until after the CT S programmable delay time has
expired. (This gives the other radio time to key.)
DKEY
Manual Key command,
This command deactivates the transmitter after it has been keyed with
the KEV command.
38
Installatton and Operation Guide MDS 0573438A01, Rev. 01
DUMP
“um-unu-
yam-rm
mam
am
The DUMP command displays programming and status information in
one quick step. Entering the DUMP command produces the same results
as entering this series of display commands:
Table 10. List of DUMP command outputs
Command
Description
ALARM Display current alarm code
MODEL Display model number
TX Display transmit frequency
FIX Display receive lrequsncy
UNIT Display unit address
MODE Display operating mode: master or remote
BUFF Display data buffering mode (ON/OFF)
BAUD Display data port communication settings
DEVICE Display device behavior
PWFl Display RF power output setting
DATAKEY Display key-on-data mode selling (ON/OFF)
CKEV Display CKEY setting (ON/OFF)
015 Display CTS response delay time
PTT Display Push-to-Talk delay time
SCD Display Solt Carrier De-key delay time
TOT Display time-nut timer setting
SER Display serial number
HREV Display hardware revision code
SREV Display software revision level
OWN Display owner name (system name)
OWM Display owner message (site name)
Flssl! Display received signal strength indication
SNR! Display signal~tosnoise ratio
SHOW PWH Display RF output power
SHOW DC Display DC supply and 5.5V regulator output
snow RADIO Display radio setting (NB/AUTO)
RADIO Display currenl radio (A/B)
TEMP Display temperature
a“
MDS 05-3438A01, Rev 01
Installation and Operation Guide
39
mm
m m
m“,
40
The output format is identical to what you would see if you had entered
the individual commands one after another:
>com|||and
command output:
>command
command output
EMP [ON/OFF]
Emphasis command,
page 59
This command is used to enable or disable emphasis and de-emphasis
on the analog input and output signals.
Emphasis is a function used in older analog radios where the modulating
signal is increased (at the transmitter) at the higher frequencies to
increase system performance. De-emphasis compensates (at the
receiver) for a signal that has had emphasis applied.
ON indicates that emphasis and devemphasis are enabled, and OFF indi—
cates that emphasis and de—emphasis are disabled.
HREV
Displays the hardware revision level.
INIT
This command resets customer-programmable settings back to factory
defaults:
' DCE device behavior
' 37 dBm (5 Watts) RF output power
' Oms CTS delay (that is, CTS is continuously asserted)
' Oms PTT delay
' Oms SCD delay
' Time-out Timer (maximum continuous key duration) is enabled
and set to 30 seconds
' DB25 port set to 4800 baud, 8 data bits, no parity, 1 stop bit
' Key-on-data is enabled
- Diagnostic test outputs are disabled
' Transmit Audio Level is seI to AUTO
' Receive Audio Level is set to -10 dBm
' Repeater Mode is disabled
Installation and Operation Guide MDS 05-3438A01, Rev, 01
(Ansell-Wm mum-
mm
ulnlmve m“!
' Pre/De-emphasis control is disabled
' Receive Time-out Timer is disabled
' TX Gain and RX Pad are disabled
' Major Alarm Mask is set to OXFFFF 0000
~ Minor Alarm Mask is set to OXOOOU FFFF
- Alarm sense is set to ACTIVE HI
' Vox time-out time is set to 500ms
° Remote maintenance eepot settings are reset
- Switched carrier mode is disabled
' LCD display and brightness are both set to mid-level
~ Diagnostics level is disabled
KEY
Data Buffering com-
mand, page 62
This command activates the transmitter. See also the DKEY command.
LNA
This command displays the low-noise amplifier current consumption in
mA.
LOG [CLR]
Event Log command,
page 68
Clear Logs command.
page 68
This command displays or clears a list of the last 800 operating changes,
called “system events.” These events include system problems, as well
as normal operator actions such as turning the power an ar aﬁ‘. In many
cases, the events leading up to a failure can be reviewed to help deter-
mine the cause ofa problem.
Entering the LOG command without any parameters displays the entire
event history. Entering LOG CLR or LOG CLEAR clears all current events
from the log history.
MDS 05-3438A01. Rev. 01 Installation and Operation Guide 41
MODE [M/R]
The MODE command displays the radio’s operating configuration —
master or remote. Entering MODE M configures the radio as a master;
entering MODE n conﬁgures the radio as a remote. All units default to
remotes; other modes must be specifically programmed with the MODE
command.
The mode command is not applicable to x810 radios at present.
MODEL
This command displays the radio‘s model number. which provides
information about its product family (MDS 2790 or 9790) and TX/RX
band operating range. The model number syntax is shown in below.
mum rwe manner
(2) mn vnmmr RECE’VE
u) mu m 5mm,“ FREOUENCY
ta) mu (0, erst A. a, e.
x790 its as ..|e ele|m es e at» ...|e
ruusmr
Fnsousncv
t,z,:
Figure 24. Radlo model number syntax
The first character identifies the radio type (2790 or 9790).
The receive and transmit frequencies depend on the specific radio
model:.
Table 11. Receive and transmlt frequencies by radio model
MDS 2790 Standard Radlo
R : Rx Frequency Range
B 860 000 - 900.000 MHZ 2 080,000 - 960.000 MHZ
C 900 000 - 960000 MHZ
MDS 2790 ETSI Radio
TX Frequency Flange
A 871.000 - 071.850 MHZ 1 800.000 - 880.000 MHZ
B 916.000 - 916.850 MHz 2 850.000 - 960.000 MHZ
MDS A790 Standard Radio
A 380.000 - 400.000 MHZ 1 380.000 - 400.000 MHZ
B 400.000 — 420 000 MHZ 2 400.000 - 450.000 MHZ
C 420,000 , 450.000 MHZ 3 450.000 - 512.000 MHZ
D 450.000 - 480.000 MHZ
42 Installation and Operation Guide MDS 05-3438A01, Rev. 01
“We...“ Mic-my:
Mlzuuwav: gcgem,
Table 11. Receive and transmit frequencies by radio model
MDS 2790 Standard Radio
E 480.000 - 512 000 MHZ
MDS 4790 ETSI Radio
MDS 9790 Standard Radio
A 500 000 - 860.000 MHZ 1 800.000 , 860.000 MHZ
B 860 000 ~ 900.000 MHz 2 860.000 - 900.000 MHZ
C 900 000 - 950.000 MHz 3 900.000 - 960.000 MHz
MDS 9790 ETSl Radio
A 871.000 - 071.850 MHZ
5 916.000 - 916.850 MHz
MODEM [NONE, BELL, 48003, 96008, MPT1411]
Modern command,
page 59
This command sets the signal type and modulation mode of the radio
The radio may not have all options available. Contact MDS if you need
a modem that is currently unavailable on the radio.
NONE—No modem. The radio operates as an analog transceiver
using Transmit Audio Input (Pin 9) and Receive Audio Output
(Pin 11). Refer to Table for DATA INTERFACE connector
pinoutsl
BELL—Bell 202T type of analog modem that is compatible with
the MDS 1000.11, MDS 2310, or the MDS 4310 series of radio
products equipped with a 1200 bps Bell 202T modem. All baud
rates up to 1200 are automatically supported as data is received.
The BAUD command setting is irrelevant.
45005—4800 bps modem modulation compatible with the MDS
10000, MDS 2310, or the MDS 4310 series of radio products
equipped with a 4800 bps modem. All baud rates up to 4800 are
automatically supported as data is received. The BAUD com-
mand setting is irrelevant.
96005—9600 bps modem modulation compatible with the MDS
1000p, MDS 2310, or the MDS 4310 series of radio products
equipped with a 9600 bps modern. When 96008 is selected, the
BAUD command is automatically set to 9600 bps.
MP‘n411—Analog mode used with external modems compliant
with the United Kingdom’s MPT 1411 radio standard. The MPT
1411 modern option is only available on the MDS 4710 radio.
MDS 05»3438A01. Rev, 01 Installation and Operation Guide 43
—=n;m==°~:~=
NMASK [oooo oooO—FFFF FFFF]
Data Buffering com-
mand, page 62
The AMASK (page 34) and NMASK commands designate which alarms are
to be classified as major and minor, respectively,
Entering the NMASK command alone displays the current setting of
minor alarm conditions in hexadecimal format.
Entering the NMASK command followed by an eight-digit hexadecimal
number reprograms the specified alarm conditions to trigger minor
alarms.
The NMASK command can be used to tailor a radio’s alarm response. For
example, a major alarm at a Redundant Station causes switch-over to the
other transceiver. By reconfiguring a major alarm as a minor alarm,
switch-over can be avoided.
The eight-digit hexadecimal number used as the command parameter
represents the 32 possible alarm bits. The hex value for the mask corre-
sponds to the hex value for the ALARM command (see the ALARM com»
mand description) Each bit that is a ‘1’ will cause the particular alarm
field that it represents to be classified as a minor alarm. For more infor-
mation on configuring the alarm response, contact Microwave Data Sys-
tems and request Application Bulletin 98-002.
OPEN
This command starts a diagnostics session. (See also CLOS on page 36.)
OPT!
The OPT! command lists each upgradable option and shows whether it is
installed (ON) or not installed (OFF). Other accepted formats for this
command include OPTIONI and opnonsr.
The output format is as follows (note that OFF represents the current set-
ting - this value could be either ON or OFF):
Diagnostics : OFF
Premium Options: OFF
1200 Baud : OFF
4800 Baud : OFF
9600 Baud : OFF
44 Installation and Operation Guide MDS 05434381501, Rev. 01
mum
EALIFDPINlA a“,
hummus m,
OWM [xxxxx]
— — Set Owner Message
command, page 65
The OWM command allows for display or entry of an optional text mes»
sage such as the system name. The entry can contain up to 30 characters.
OWN [xxxxx]
Set Owner Name com-
mand, page 64
The OWN command allows for display or entry ofan optional text mes-
sage such as the site name. The entry can contain up to 30 characters.
PHOG
This command initiates an upgrade of the radio‘s internal software. See
Ihe on-line documentation provided with the MDS diagnostics and con-
figuration software for inslructions.
PTT [0-255]
Push to Talk Delay com-
mand, page 60
This command sets or displays the amount oftime to wait after the radio
receives a key-up signal from either the FTP or RTS lines before actu-
ally keying up. Entering the PTT (Push-to-Talk) command without a
parameter displays the timer value associated with the key-up delay
selection. Entering the PTT command with a parameter ranging from D
to 255 sets the timer value in milliseconds A timer value of zero means
that the radio will key—up immediately following the key-up signal.
The command is applicable for DCE operation, when the radio is keyed
either by the FTP signal or by RTS. The command is n_ot applicable
when the radio is keyed by data or keyed by the KEV command
PWR [20—37]
Output Power Setting
command, page 58
This command sets or displays the master station’s RF forward output
power setting. Entering the PWR command without a parameter displays
the forward output power in dBm. Entering the Pwn command with a
parameter ranging from 20 to 37 (inclusive) sets the forward output
power in dBm. The default setting is 37 dBm, which is equivalent to 5
Watts,
MDS 0573438A01. Rev, 01 Installation and Operation Guide 45
“mun“ Mtznuvuvz
m, m
Wt“ M 5mm!
To read the actual (measured) power output of the radio, use the SHOW
PWR command.
In the USA, maximum allowable power is governed by FCC limits on
Effective Isotropic Radiated Power output (EIRP). The EIRP limit of
+36 dBm means that any user with a net antenna gain greater than 6 dBi
must decrease the PWR setting accordingly. Section XXXXX????? con~
tains a detailed discussion of this topic.
RADIO [A/B]
Radio Selection com-
mand. page 66
This command sets or displays the active radio. Entering the RADIO com-
mand without a parameter shows whether the A or B radio is the active
radio. Entering the RADIO command with a parameter 0“ or B resets the
active radio to the A or B radio.
HEPEATER [ON/OFF]
Repeater Mode com—
mand, page 61
This command sets or displays the radio’s configuration as a repeater.
Entering the REPEATER command without a parameter displays whether
or not the radio is configured as a repeater (0N=repeater; OFF:not a
repeater) Entering the HEPEATEFI command followed by ON configures
the radio as a repeater; entering HEPEATER OFF returns a repeater to
stand—alone operation.
RSSI, FISSI!
Receive Signal Strength
command, page 66
These commands display the Received Signal Strength Indication in
dBm units. The output can range from —50 dBm to —120 dBm.
R55] is a “raw" signal level indicator, continuously updated in real time
at about a 1 second interval. The RSSI command causes the diagnostic
port to enter an RSSl update mode. The diagnostic port will display an
updated RSSI output line at roughly a 2 second interval refresh rate. The
diagnostic port will stay in this mode until you press the Enter key at the
PC or HHT.
The RSSI! command is a “computer friendly” version of R55]. lt pro-
vides a one-time reading and display of R851 at the diagnostic port.
Note that an RSSI reading is only valid if the unit has been properly cal-
ibrated.
46 Installation and Operation Guide MDS 05-3438A01. Rev. 01
unset-Nu mow“
mic-mus MM;
FlX [xxx]
Receive Frequency com-
mand, page 58
This command sets or displays the radio’s receive frequency. Entering
the Rx command without a parameter displays the receive frequency in
MHz. Entering the RX command with a value from the frequency table
below resets the receive operating frequency to the specified value.
The factory default for RX frequency is “NONE". This means that RX
frequency must be explicitly programmed before the radio can operate.
The frequency must be an integer multiple of the reference frequency
and must be within the valid range. The range of valid receive frequen»
cies depends on the specific model and operating bands ofthe radio; see
Table 11 on page 42.
RXLEVEL [—20-7]
Receive Level com-
mand, page 63
The RXLEVEL and TXLEVEL (page 52) commands control the audio level
settings when the radio is operating in analog mode. When used alone,
the RXLEVEL command displays the receive level in dBm. Entering the
RXLEVEL command followed by a number between —20 and 7 resets the
audio level in dBm,
RXPAD [ON/OFF]
Receive Pad command,
page 64
This command enables or disables the receive attenuator for the receive
audio level?????????7?. Entering the RXPAD command without a param-
eter shows whether the attenuator is ON (enabled) or OFF (disabled).
Entering the RXPAD command followed by ON enables the receive atten-
uator; entering OFF disables it.
sco [0-255]
Sort Carrier De-key
Delay command,
This command sets or displays the amount of time to wait after a de-key
request before actually de-keying the radio. Entering the SCD command
without a parameter displays the timer value in milliseconds Entering
the scD command with a parameter ranging from 0 to 255 resets the
timer in milliseconds. The default setting is 0, which means that the
radio will de-key immediately following removal of a keying signal.
MDS 05-3438A01, Rev. 01
lnstallation and Operation Guide 47
CALIFBRNIA M'B‘WM
um
mmuwms ms
43
SEE
Serial Number com—
mand, page 67
This command displays the radio’s serial number as recorded at the fac-
toryi
SHOW [PORT/DC/PWR]
The snow command displays one of three pieces of information,
depending on the command parameter entered. These are:
' Pom—Displays which connector port (RJ—ll or DB—ZS) is
currently active for diagnostics and control.
' Dc—Displays DC input/output voltages.
' PWR—Displays the actual (measured) RF power output in dBm.
Unlike the PWR command, this command shows the actual level
being measured, not the programmed RF power setting.
Sample Input Sample Response
SHOW PORT CONNECTED TO RJ‘H
SHOW DC DC lN xxx V
DC OUT x x V
SHUW PWFI HF POWER {in (Him
SNR, SNR!
S/N Ratio command,
page 66
These commands display the signal-to-noise ratio in dB. MDS’ defini-
tion of signal-to-noise is based upon the signal level following equaliza—
tion, for valid frames only. A valid frame is defined as containing no
more than one bit error, and belonging to a packet addressed for the
receiving radio. SNR is updated and latched for each valid packet
received. A filter in the DSP tempers the effect of any sudden changes
in the value.
Output ranges from 10 dB to 33 dB. A value of 10 dB represents little or
no signal. A value of 24 dB represents a very strong signal.
The SNR command causes the diagnostic port to enter an SNR update
mode. The diagnostic port will display an updated SNR output line at
roughly a 2 second interval refresh rate. The diagnostic port will stay in
this mode until the Enter key is pressed at the PC or HHT.
The SNR! command is a “computer friendly” version of SNR. It provides
a one-time reading and display of SNR at the diagnostic port.
Installation and Operation Guide MDS 05-3458A01. Rev 01
SREV
mm
m.
Software Revision com-
mand, page 67
sFlEv displays the release number, revision and build date of the MCU
software, as shown below:
06-3251A01
1.0.0 ddemyy
STAT
Active Radio Status com-
mand, page 66
The STAT command provides a user-friendly, interactive way to get
alarm status. (The ALARM command (page 32) summarizes alarm codes
in hexadecimal format.)
If no alarm event conditions are active, the message No ALARMS
PRESENT is displayed If alarms are present, they are displayed in
ascending order starting with the lowest event number:
Event: 26 (MINOR)
DC input power is not in
valid range
Major alarms are displayed first, then minor ones.
The command output displays the event number, major/minor status,
and a one- or twofline text message, respectively. If additional alarm
events are active, the MORE> prompt is displayed.
- Press the Enter key to display the next alarm event
' Enter QUIT, Q, or. (period) to return to the command prompt.
The table below gives the text message displayed by the STAT command
for each associated alarm eventz. (Conlinued)
Table 12. Text messages of alarm event codes
Event Number Text Message
01 Hardware mismatch
02 Model number not programmed
03 Authorization iauit
D4 Synthesizer out-ofrlock
07 Voltage regulator iauit detected
08 Radio not calibrated
MDS 0573438A01, Rev. 01 Installation and Operation Guide
49
mm“?
Table 12. Text messages of alarm event codes
Event Number Text Message
09 DSF' download fault
l0 EEPROM write failure
1 1 Checksum fault
12 Receiver time-out
16 Unit address not programmed
17 Data parity error
18 Data framing error
20 Conllguralion error
25 (iv regulator output not lt'l valid range
25 DC input power is not in valid range
31 internal Temperature not in valid range
TEMP
Show Temperature and
Voltages command,
page 67
This command displays the internal temperature of the transceiver in
degrees Centigrade. Note that the radio is designed to operate in a range
from —30 C" to +60 C“, and may fail at temperatures outside this range.
This internal reading may be higher than the outside temperature by sev-
eral degrees.
TIME [TIME hh:mm:ss AM/PM]
Set Time command.
page 65
This command sets or displays the time. Enter the command Without
any parameters to display the time. Enter the command in the following
format to reset the time:
TIME hh:mm:ss AM
or
TIME hh:mm:ss PM
where hh is a two-digit number from 01-12 representing the hour, mm is
a two-digit number from 00 to 59 representing the minute, and 33 is a
two-digit number from 00 to 59 representing the second. (Also see
DATE [mmm ddyyyy] on page 38.)
50 Installation and Operation Guide MDS 05-3435A01, Rev. 01
Emma,“ minim
Mizmwm "A“
TOT [0-255]
Transmit Timeout com-
mand, page 60
Transmit Timeout Dura-
tion command, page 61
The TOT command selects or displays the “time-out timer” value. This
timer limits the time that a radio can remain continuously keyed. lfa
radio remains keyed for longer than the time-out timer duration, the
transmitter is automatically de-keyed. The radio must then see a transi-
tion back to the de-keyed state before a new key-up request is allowed.
Entering the TOT command without a parameter displays the timer value
in seconds. Entering the Tor command with a parameter ranging from 0
to 255 resets the timer in seconds. The default setting is 0, which dis-
ables the time»out timer. The default is 30 seconds.
TX [xxxx]
Transmit Frequency com—
mand, page 55
This command sets or displays the radio's transmit frequency. Entering
the Tx command Without a parameter displays the transmit frequency in
MHZ. Entering the TX command with a value from the frequency table
below resets the transmit operating frequency to the specified value. The
factory default for TX frequency is “NONE”. This means that TX fre-
quency must be explicitly programmed before the radio can operate.
The frequency must be an integer multiple ofthe transmit frequency and
must be within the valid range. The range of valid receive frequencies
depends on the specific model and operating bands of the radio; see
Table 11 on page 42.
TXGAIN [ON/OFF]
Transmit Gain com-
mand, page 63
This command enables or disables the transmit audio boost for the
transmit audio level?7?????????. Entering the TXGAIN command without
a parameter shows whether the audio boost is ON (enabled) or OFF (dis-
abled), Entering the TXGAIN command followed by UN enables audio
boost; entering OFF disables it.
MDS 05—3438A01, Rev. 01
Installation and Operation Guide 51
“mm,“ mummy:
nan
Hummus m“
52
TXLEVEL [—20-3, AUTO]
. A~ Transmit Level [—20-3,
AUTO] command,
The TXLEVEL and thLEVEL (page 47) commands are used to control the
audio level settings when using the analog mode. When used alone, the
TXLEVEL command displays the transmit level in dBm. Entering the
TXLEVEL Command followed by a number between —20 and 3 resets the
audio level in dBm. Entering the TXLEVEL command followed by AUTO
causes the transmit level to be set automatically.
UNIT [1 DOUG—65000]
Unit Address command,
page 62
This command sets or displays the unit address of a radio, which
uniquely identifies a single radio within a network. It is used primarily
for diagnostics.
When the radio first powers up, unit address is unprogrammed. Unit
address can range from 0...65000, but can only be manually pro-
grammed from 10000...65000. (Addresses in the (1.3999 range only
occur when they are assigned as default values following factory pro-
gramming of the serial number.)
6.4 Configuration and Programming using the
Front Panel
This section explains how to use the radio’s LCD display to change the
radio’s configuration. Cross»references to the corresponding PC—based
commands are included Basic navigation through the LCD screens was
described in Section 5.2, Front Panel Indicators, on page 20.
Switching LCD to Radio Configuration Mode
As explained in Section 5.2, the LCD has two modes, display-only and
radio configuration. The LCD is normally in display-only mode. To
activate radio configuration mode:
1. From the start-up screen, press Ihe down arrow button to display the
menu directory
2. On the menu directory screen, press the right arrow button to display
the Set Access Level screen. (If this screen does not appear, the LCD
is already in radio conﬁguration mode.)
3. Press the ENTER button to initiate a change to radio operation.
installation and Operation Guide MDS 05-3488A01, Rev. 01
uumﬂum warm
, um
uzwuw‘wE m,
4. Press the down arrow button to display the other access level, USER.
5. Press the ENTER button to save the change.
Use of Control Buttons in Radio Configuration Mode
In radio configuration mode, the control buttons have additional func-
tions:
- ENTER—Starts and ends a change to radio functionality
(enables arrow buttons to be used for selections instead of
navigation).
' ESCAPE—Cancels the current radio functionality selection
before the ENTER button is pressed a second time.
- Up/down arrow buttons( A V )—Cycles through a display of
available choicest Pressing the ENTEFl button when a particular
choice is displayed reconfigures the radio using that setting
Making changes to radio functions
1. When an individual menu screen is displayed, press the ENTER
button The message change pending appears at the bottom of the
screen. This tells the system that the next series of arrow button
presses are to make onscreen selections, not display menu screens.
2. Most options are either words (“enabled,” “disabled”) or numerals.
The instructions below apply in most situations; if not, the method
for choosing an option is detailed in the screeen description.
Word options. To display all choices when the options are words,
press the up or down A V arrow button
Numeric options. If the option is more than one digit, ﬁrst select
the digit to change: press the left or right arrow < > button to
move the underscore (_ ) under the digit to be changed. (For exam-
ple, to change “30" to “40,” move the underscore under the “3.”)
Then press the up or clown A V arrow buttons to increase or
decrease the number. Or hold down the arrow button to scroll
choices more rapidly.
3. Press the ENTER button again when the desired choice is displayed.
(Or press the ESCAPE button to cancel the change.) The message
done appears, indicating that the change was successfully made
“i
MDS 05-3438A01, Rev. 01 Installation and Operation Guide 53
mzuow-u:
This section describes each of the LCD display screens. The commands
are cross-referenced to descriptions of corresponding commands
Group 1—Startup Screen and Menu Directory (page 57)
These screens are starting points for all programming and viewing activ-
The Configuration screens are used to view or define the transceiver’s
TX [xxxx] command,
page 51
Set/display transmit and receive frequency
Set/display data port baud rate and parity
Enable/disable Transmit Timeout Timer
Set/display Transmit Timeout Timer delay
Enable/disable Continuous keying/DCE operation
Enable/disable key on data/key on RTS
Set/display transmit and receive audio level
Enable/disable transmit gain and receive pad
Set/display LCD display contrast and intensity
“scram,
6.5 Screen Descriptions
entered from a connected PC using this symbol:
These screens are presented in four major groups:
ities.
Group 2—Conﬁguration Screens (page 58)
operating parameters They include:
- Set/display access level (LCD mode)
~ Set/display output power
' Set/display modem speed
' Enable/disable emphasis
- Set/display Clear to Send (CTS) delay
' Set/display Push to Talk (P'l'l') delay
' Set/display soft carrier dekey delay
0 Enable/disable RX Timeout Timer
' Enable/disable Repeater mode
- Key/dekey radio manually
- Set/display unit address
' Enable/disable data buffering
' Display major and minor alarm masks
54 lnslallation and Operation Guide
MDS 05-3433A01, Revr 01
"am
mm
- Set/display owner name and message
- Set/display time and date
Group 3—Diagnostic Screens (page 66)
The Diagnostic screens display important status information for the
local and remote radio, as well as run several tests usefu
system problems The Diagnostic screens include:
Display active radio status
Display receive signal slrength
Display S/N ratio
Set/display active radio selection
Display transmitter state (keyed, dekeyed)
Display internal temperature and voltages
Display radio serial number
Display software revision level
Program the stand-by unit
Group 4—Event Log (page 68)
l in locating
The event log displays up to 800 of the most recent operating changes.
These events include system problems, as well as normal operator
actions such a: turning the power on or off The screens in this group
are:
- Display event log entries
' Clear event log
LCD SCREEN
PC COMMAND
DESCRIPTION
Access Level Enable or disable radio ecnllgurstlon mode
Delalls Page 53
Aeuva Radio smug srAr Dlsplay alavm mndulons
Details Page 65 Dela/ls Page 49
Alarm Mulls AMASK [com Setovdlsplay alavm masks
Deialls Page 64 GOOD-FFFF FFFF]
Details Page 14.
NMASK moo
omFFFF FFFF]
Dela/Is Page 44
Buckllgm lntenslly
Set or display LCD background brightness
Details Page 64
Baud Rail/Format EAUD [xxxxx set or msplay data lnteﬂaee part communica-
Delalls Faye 59 abc1/[xxxxx] s lion attributes
Delalls Page 35
clear Lugs LOG [em] Clear event log
Delarls Page 68 Details Page 41
Clear Yo Send way crs [0-255] Set on dlsplay time to Walt alter HTS is
Details page 50 Details Page 37 asserteﬂ by host compuler betels assamng
cTs ma
MDS 05-3438A01, Rev, 01
Installation and Operation Guide 55
LCD SCREEN
Comlnuous Keyrng
Dararra Page 51
PC COMMAND
CKEV [ON/OFF]
Details Page 36
DESCRIPTION
serscx continuous keyrng or has behawor
nan Elmeﬂng
Details Page 52
EUFF [ON/OFF]
Deter/s Page as
Enabwe er meaue ea|a buffering
Displly Camus! Se! or drspray LCD hiegmund uhalaclel
Dela/Is Page 64 lmensny
Emphasis EMF [ON/OFF] Enable or disama emphasra and darempnasrs
Deter/s Psge 55 Delay/s Page 40
Even! Leg LOG [cm] Drspray events logged by me «We vans-
Details Page as Delaﬂs Page 41 ceiyer
Kay on Data DATAKEY (ON/OFF] sense: key anrdata or keywﬂAHTS
Debris hge 62 Details Page 37
Mlnull Key DKEV Manually key or uekey me tranammer
Derarrs Page 52 Dela/15 Page 33.
KEY
Denna Page a
Menu Directovy
Details Page 57
Select dragnasticr conﬁguramrr, DI evem log
commands
mum
Derarla Page 59
MODEM (uoNE. BELL,
45005, FGDOEr uwun]
Si! or erspray rnrernal modem speed
Delay/s Page 43
Output iner Semng Pwn [20-11] Set 0! urspvay rransmrt power umpul
Dem/s Page 55 Derarre Page 45
Program Sunday unu Upgrade slanﬂby ramo's imemal software
Dela/Is Page 57
man In Yulk Del-y Prr [0-255] 591 or eispray amoum er nrne u, wan anar
Dew/s Page 517 naraua Page 5 nes| compuwr asserts HTS before kayrng
radiu and Deginmng lransmmal
Rania Seleanon RADIO we] Set or display aclive "unscelver. enabie or
Derarrs Page 66 perm Page 46 ereanre amemaur; ewrrcn-ovar
Rec-rye Freque'lcy RX [xxx] Set or drspiay reserve frequency
Derarle Page 59 Bowls Page 47
Pecem Laval HXLEVEL 1-20-71 set or display radio‘s audio lransmil raver
Dsiads Page 53 Details Page ‘7 when ladle ls epemnng m analog mode
Receive Pad RXPAD [ow/cm Enabie or disable recerye anenuamr for
Dams Page 64 Details Page 47 receive auar'a level
Hemlvl Slqnll Strength nssn, nssn Dlsplay recewed slgnal strength in dBm
Dela/As Page as ne'er/a Page 45
Rap m Mod. REPEATER [cu/err] Ename or creams repearar mode
Delalls Fkge $1 DsIaMs Page 45
RX T'Imeout [Mun] $51 or dlsplay amount m tune «a wart withom
Delarfs Page 51 data recerpr bevore generarrng an ararrn and
swtlchmg w the sum Dy vadlu
sm Pane sun, sum Drspray svgna\—(a—mrse rave in dBm
Derarls Page 53 Dela/Is Page 45
Serial Number SER Drsp|ay acme transcewev beanie senal num~
Details Page 57 Dara/re Page as her (not me ladle serial number)
set one DAYE [mmm me my] sea er erapray me dale
Deraus Page 65 Dela/Is Page as
Set Owner Mung. own [xxxxx] Se! er eispray ma owner message m we
Details Paw 55 Daren; Page Is name
531 Owner Name own [ml] 591 or display Ihs wmer name or system
Dela/Is Page 54 Dam Page 45 name
su nm- TIME mus hmmmzsn Set or display ma hme
Dew/s Page 55 All/PM]
Delarts Page 50
56 Installatron and Operation Guide
MDS 05-3438A01, Rev. 01
LCD SCREEN PC COMMAND DESCRIPTION
Show Tlmperalure and TEMP Dlsplay radio‘s lmernsl temperature and volt-
Vuttnges Deter/s Page 50 ages
Delarls Page 67
Suﬁ earner- m-ksy sen [07255] Set or dlsplay amount at tlme to wall strer a
Dnlny Details Page 47 de-key request peters actually deterring me
Delsrls Page so radio
sow-rs Reunion snsv Display rrrlsrnal soﬂware part number and
Details Page 57 Dew/s Page 49 vsrslon number
Suﬁ-up Stu!" Dlsplay ladle name, owner name, owner mes-
Dmrls Page 57 sage, and any alarms
Transmit Frequency Tx [xxxx] Set or display transmrrter frequency
Deter/s Page 55 Details Page sl
rrsnsnrr G-ln
Details Page scr
TXGAIN [cu/om
Delsrls Fags 51
Enable or disable transmit audio boos! lor
transmit audio level
l'ranxmlr uvol [404
ALITO]
Details Page 53
TXLEVEL [40s AUTO]
Derarls Page 52
set or drsplay radlo‘s audio rransmrr level
when radrg ls ln analog mode
Transmit Timeout
Dela/ls Page 60
Enable or disable Transmit Tlmeoul timer
(time to wait bmle dlsahlmg the tr-nsmitter
to prevent unnecessary use at me fmquency)
Ylansmlt Timeout Durl- Set at dlsptay Transmrl Tlmenul duration (ilms
tlon to wait betors ﬂlsabllrlg me transmlnsr ln pres
Debris Page 51 vent unnecessary use or the rrequensy)
transmitter smus Display transmitter slate (keyed or dskeyedl
Detslls Page 57
Unlt Address UNIT nooon—ssooo] Set or display rsnm's will address
Delal‘ls Page 52 Bears Page 52
_________________________________________________________________
GROUP1 AIN SCREENS
Start-u p Screen
"DE 9799 MRS Radio
DUNERS NRME
DMNERJ MESSRGE
When the radio is ﬁrst powered on, or after a period of time has elapsed after the
last button press, the LCD display shows the start-up screen. The start-up screen
displays the product model number, as well as the owner's name and message.
(Typically, customers use the owner name and message llelds to display the
system and site name)
The screen dims alter a period uttime has elapsed Wlihout any activrty; brightness
can be restored by pressing any button,
For information on how to set what ls displayed on this screen see Set Owner
Name on page 64 and Set Owner Message on page 65.
Press ENTER, or the up or down arrow button, to display the Menu Directory
screen.
Menu Directory
t‘IDS 9790 HRS Radio
~tonPi5uratton
Diagrrostx _
Event Log
This screen is used to access three screen display cycles: Configuration, Diag-
nostics, and Event Log, The rlght-pmnting arrow points to the currently selected
menu.
Press the up/down arrow buttons to move the arrow to the desired menu. then
press the right/left arrow buttons to display each of that menu's screens in succes»
sion.
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 57
PM,“ Mlnsnwwz
mu
mutt-waive my,
E—
GROUP 2—CONFIGUHATION
Access Level
Set Recess Level
User
This screen is used to set the LCD display to radio configuration mode by selecting
a level of access. There are two levels:
NONE—This is the delault selling upon power-up. All radio settings can be viewed,
the access level can be changed, and the LCD brightness and contrast can be
changed. All other settings are tor display only, and cannot be changed
USER—Changes can be made to any radio parameter.
To select the USER access levelr press ENTER, press the down arrow button to
display the word “User." then press ENTER again to make the change.
The radio returns automatically to display-only mode (access level: NON E) after a
period at time has elapsed without a button press, or it the radio is powered off and
then on,
Transmit
Frequency
Tt‘ansnxt Frequency
4216 £9898 l'in
This screen is used to display or set the transmitter trequency Valid lrequencies
are listed in Table on page 42.
To change this value, press ENTER. then use the Ielt/right arrow buttons to select
a digit. Then use the up/down arrow buttons to increase or decrease the number.
Press ENTER to make the change.
It the transmit frequency is changed by more than 1 MHz. the duplexer must be
replaced or retuned. Refer to Duplexer and Helical Filter Reluning on page 501m
inbrrnatlon on retuning the duplexer and helical tillers.
TX [xxxx] command,
page 51
Fleceive
Frequency
Receive Fresuenc-s
4GB .BBQBE1 MHZ
This screen is used to display or set the receive frequency. Valid trequencies are
listed in Table on page 42.
To change this value. press ENTER, then use the left/right arrow buttons to select
a digit. Then use the up/down arrow buttons to increase or decrease the number.
Press ENTER to make the change.
It the receive frequency is changed by more than 1 MHz. the duplexer must be
replaced or retuned. It the receive frequency is changed by more than 5 MHz.
helical litter adiustments must be made. Reier lo Duplexer and Helical Filter
Hetuning on page 80 for inlarmation on retuning the duplexer and helical filters.
Fix [xxx] command,
page 47
Output Power
Setting
35 dBm
Output Power Setting
This screen is used to set ordisplaythe transmit power output setting. Power output
may be set between +37 dBm and +20 dBm.
58
Installation and Operation Guide
MDS 05—3438A01, Fiev. 01
minim
—m min Ms
To change this value, press ENTER‘ then use the left/right arrow buttons to select
a digit Then use the up/down arrow buttons to increase or decrease the number
Refer to Table to convert dBm to watts it necessary. Press ENTER ti: make the
change.
F'WFi [2047] command.
page 45
(Continued)
Table 13. dBm versus Watts
dBm Watts darn Watts
+37 dBm 5 0 watts +27 dBm 500 mllllwatts
+35 dBm 3 2 watts +25 dBm 320 milliwatts
+33 dBm 2.0 watts +23 dBm 200 milllwatts
+31 dBm 1.25 watts +20 dBm 100 milliwatts
+29 dBm 800 niilliwatts
Modem This screen is used to set or dlsplay the internal modern speed for compatibility with
the modem in the central host computer,
M422? To change the modern speed, press ENTER. then use the up/down arrow buttons
to display available modem speeds, Press ENTER to make the change.
MODEM (NONE, BELL.
48008. 96008, MPT1411]
command, page 43
Baud Rate/Format This screen is used to set or display the communication attributes for the DATA
lNTERFACE port. For a description of the communication attributes, see BAUD
{xxxxx abcI/[xxxxx] S command, page 35.
To change the baud rate. press ENTER. then press the left arrow button to move
the underscore under the baud rate. Then use the up/down arrow buttons to select
a new baud rate,
To change the data format, press ENTER. then press the right arrow button one or
more imes to move the underscore (_) under the character to change, Then use
BAUD [xxxxx abc]/[xxxxx]
S command, page 35
Emphasis This screen is used to enable or disable emphasis and deemphasis on the analog
input and output signals
E eh ’ - “s i . . . t . . v
an" afield Emphasis is a function used in older analog radios where the modulating signal is
MDS 05-3438A01, Rev 01 Installation and Operation Guide 59
mm
_....
m...
To enable or disable emphasis, press ENTER, then use the up/down arrow buttons
to display ENABLED or DISABLED. Press ENTER to make the change.
EMF‘ [ON/OFH command,
page 40
Clear To Send
Delay
Clear LG Send Dela-4
3 milliseconds
This screen is used to set or display the CIear-to-Send Delay. This is the amount oi
time to wait alter RTS is asserted by the host computer on the data port peters
asserting the CTS line When the delay is 0, data will be sent out the data port
without imposing a key-up delay.
To change the delay, press ENTER, then use the left/right arrow buttons to select
the digit to change Then use the up/down arrow buttons to increase or decrease
the digit. Repeat for the other digits it necessary. Press ENTER again to make the
change.
CTS [0255] command,
page 37
Push to Talk Delay
Push to Talk
Dela!
6 milliseconds
This screen is used to set or display the Push-to Talk Delay. This is the amount of
time to wait after RTS is asserted by the host computer before the radio is keyed
and begins to transmit. When the delay is 0, the radio Will key up immediately fol»
lowing the key-up signal.
To change the delay, press ENTER. then use the left/right arrow buttons to select
the digit to change Then use the upidown arrow buttons to increase or decrease
the digit. Repeat tor the other digits if necessary Press ENTER again to make the
change.
PT!’ [0255] command,
page 45
Soft Carrier De-key
Delay
Soft. Carrier De‘kee
El milliseconds
This screen is used to set or display the SottrCarrier Dekey Delay. This is the
amount oi time to wait after a de-key request before actually de-ksying the radio.
When the delay is 0, the radio will de-key immediately following removal of a keying
signal.
To change the delay, press ENTER. then use the left/right arrow buttons to select
the digit to change. Then use the up/down arrow buttons to increase or decrease
the digit. Repeat for the other digits it necessary Press ENTER again to make the
change.
SCD [0-255] command,
page 47
Transmit Timeout
Transmit Timeout
enabled
This screen is used to display the Transmit Timeout setting, and to enable or dis-
able this timer. When this timer is enabled. it disables the transmitter after a set
period oi time to prevent unnecessary use of the lrequency. lithe radio is set to
continuous keying, the Transmit Timeout Timer is automatically disabled.
To enable or disable the timer, press ENTER, then use the up/down arrow buttons
to display ENABLED or DISABLED. Press ENTER to make the change.
60 Installation and Operation Guide
MDS 05-3438A01, Rev. Oi
exam"
See the following command to change the timer delay.
TOT [0255] command.
page 51
Transmit Timeout
Duration
Transmit Timeout
36 seconds
This screen is used to set or display theTransmit Timeout duration, This is the
amount oitime to wait before disabling the transmitterto prevent unnecessary use
of the frequency. If the radio is set to continuous keying, Transmit Timeout is auto-
matically disabled.
To change the duration press ENTER, then use the left/right arrow buttons to
select the digit to change. Then use the up/down arrow buttons to increase or
decrease the digit. Repeat for the other digit if necessary Press ENTER again to
make the change.
TOT [0-255] command,
page 51
FtX Timeout
[0.1440]
RM Timeout
hone
This screen is used to set or display the Fix Timeout Timer duration This is the
amount of time to wail (in minutes) after the last date receipt before switching over
to the stand-by radio and generating an alarm.
To change the duration, press ENTER. then use the left/right arrow buttons to
select the digit to change. Then use the up/down arrow buttons to increase or
decrease the digit. Repeat tor the other digit it necessary. Press ENTER again to
make the change.
To disable the Receive Timeout Timer, set the duration to 0
Repeater Mode
Repeater Mode
enabled
This screen is used to set or display the radio's operation as a repeater. When the
radio is set to operate as a repeater. the screen displays "enabled" (repeater mode
is enabled), When the radio is a non-repeater, the screen displays “disabled"
(repeater mode is disabled).
To change the operating mode. press ENTER, then use the uo/down arrow buttons
to select ENABLE (repeater mode) or DISABLE (non»repeater mode). Press
ENTER again to make the change.
commend, page 46
g REPEATER [ON/OFF]
Continuous
Keying
Continuous KEBIHQ
enabled
This screen is used to set or display the radio‘s keying mode (continuous keying, or
DCE behavior). Typically. a master station is set for continuous keying.
To change the keying mode, press ENTER. then use the up/down arrow buttons to
select ENABLE (continuous keying) or DISABLE (DCE behavior). Press ENTER
again to make the change.
CKEY {ON/OFF] com-
mand, page 36
MDS 05—3438A01, Fiev. 01
installation and Operation Guide 61
“um-rm. mgr-WM
mam m“
Manual Key This screen is used to manually key or dekey the transmitter. The transmitter state
can be displayed by selecting Transmitter Status from the Diagnostics menu
Manual Kes ipage67lv
d 1 s a t. l e d
To key the transmitter. press ENTER, then use the up/down arrow buttons to select
ENABLE (manual keying) Press ENTER again to key the transmitter.
To dekey the transmitter, press ENTER, then use the up/down arrow buttons to
select DISABLE (manual dekeylng). Press ENTER again to dekey the transmitter.
* KEY ma (1, 41
ﬂ com n page
% DKEY command, page 38
Unit Address This screen is used to set or display the radio’s unit address. which uniquely iden-
tiﬁes a single radio within a network. It is used primarily lor diagnostics.
U” 1 ngg é“ a” When the radio first powers up, unit address is unprogrammed. Unit address can
range train 0. 55000, but can only be manually programmed from 10000,..65000.
(Addresses in the (1.9999 range only occur when they are assigned as delault
values lollowing lactory programming or the serial number.)
To change the unit address. press ENTER. then use the left/right arrow buttons to
select the digit to change. Then use the up/down arrow buttons to increase or
decrease the digit Hepeat for other digits as necessary. Press ENTER again to
make the change.
UNIT [1 GOOD—65000]
command, page 52
Key On Data This screen is used to set or display the radio's keying mode (key-on-data, or
key»on—RTS). In key»dn-data mode, the radio will automatically key itself whenever
Ker, Ur, Data input data arrives on the 0525 port. in key-on-FTTS mode. the radio will only key in
enab 1 ad response to an HTS or F'TI' signal.
To set the radio to key-on-data mode, press ENTER, then use the up/down arrow
buttons to select ENABLE. Press ENTER again to make the change. To set the
radio to key-on-RTS mode, press ENTER. then use the up/dowri arrow buttons to
select DISABLE Press ENTER again to make the change.
Note that key-on-data mode is only applicable when the input data source is digital.
When the input data source is analog. this setting is irrelevant,
DATAKEY [ON/OFH com-
mand, page 37
Data Buffering This screen is used to enable or disable data bullering Ifdata buffering is enabled,
the radio operates in seamless mode. where the data is sent over the air as quickly
Def. 3 Butt H i ng as possible. However, the receiver Will butter (hold) the data until enough bytes
e M bled have arrived to cover worst-case gaps in transmission, This mode of operation is
required for protocols such as MODBUS‘M that do not allow gaps in their data
transmission.
62 installation and Operation Guide MDS 05-3438A01. Rev. 01
am“
If data buffering is disabled. the radio operates with the lowest possible data latency
(averageio Data bytes are sent out the data 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 outgotng data View.
To enable or disable data buffering press ENTER. then use the up/down arrow bul~
tons to display ENABLE or DISABLE. Press ENTER again to make the change.
BUFF [ON/OFF] com-
mand, page 36
Transmit Level
[—20-3, AUTO]
Transmit Level
“1 dBn
This screen is used to set or display the radio‘s audio transmit level when the radio
is operating as an analog device The audio transmit level can be set between —20
and 3 dBm. or it can be set to adiust automatically.
To change the audio transmit level, press ENTER You do not need to use the
left/right arrow buttons to select a digit. Instead:
To increase the transmit level. press the up or left arrow button ( A t> ).
To decrease the transmit leveli press the down or right arrow button ( V <1 ).
Press ENTER again to make the change.
TXLEVEL [—20-3. AUTO]
command, page 52
Receive Level
Receiue Level
"1 den
This screen is used to set or display the radio‘s audio receive level when the radio
is operating as an analog device. The audio receive level can be set between 720
and 7 dBm.
To change the audio receive level, press ENTER, You do not need to use the
left/right arrow buttons to select a dig/r. Instead:
To increase the receive level, press the up or left arrow button ( A l> ).
To decrease the receive level. press the down or right arrow button ( V < ).
RXLEVEL [720-7] Com»
mand, page 47
Press ENTER again to make the change,
Transmit Gain
Transmit, Gain
disabled
This command enables or disables the transmit audio boost for the transmit audio
level??????7??7?.
TXGAIN [ON/OFH com-
mand, page 51
MDS 05-3438A01, Flew 01
Installation and Operation Guide 63
mm..." mm
aw»- mm“
Receive Pad
Receiu- ‘ad
disabled
This screen is used to enable or disable the receive attenuator for the receive audio
let/en? 777777.
if RXPAD[ON/OFF] com-
7 mand,page47
Alarm Masks
Rlai‘l'r Masks
MQJOI" FFFF DEM
Minor Blaiiﬁ FFFF
Mam-r Sense is HI
This screen is used to display hexadecimal codes which identify which alarms are
classltied as major or minor, or ior which alarm notification is disabled. The screen
also displays the alarm sense setting For an explanation. or to change the alarm
masks, see the following PC commends:
AMASK [0000
0000~FFFF FFFF] com-
mand, page 34
ASENSE [HI/L0] com-
mand, page 34
Display Contrast
Diselas Contrast
B W 180
This screen is used to set the intensity or the LCD displays foreground characters
Making the characters darker may aid the clarity of the LCD display when viewed
from an angle.
The hardlsplay indicates the relative intensity of the foreground characters. with ‘0'
being taint characters and ‘t 00‘ being dark characters.
To change the selection, press ENTER, then use the left/right arrow buttons to
move the bar display to the desired setting. The screen changes dynamically to
show the eftects of the change. Press ENTER again to set the change.
Backlight Intensity
Backligi’ti. Intensity
B 50 1813
IIIIIIIIII
This screen is used to set the brightness ot the LCD display’s background. Making
the screen background brighter or dimmer may aid the clarity of the LCD display
when viewed under different light conditions.
The bar display indicates the relative brightness 01 the screen background, With ‘0'
being dim and ‘100‘ being very bright.
To change the selection. press ENTER. then use the left/right arrow buttons to
move the bar display to the desired setting. The screen changes dynamically to
show the effects of the change. Press ENTER again to set the change.
Set Owner Name
Set. Owner Name
_!"#$.'r.&'()t+:-./E1123
This screen is used to set or display text (up to 20 characters) to appear on the
radio's start-up screen, such as the system name,
Press ENTER to display a scrollable line of characters at the bottom of the screen.
An underscore (_] is used to select a character tor the owner name (Figure 25). A
caret (”l shows the current character position.
' Press the up arrow A button to move the underscore to the Istt until it is
under the first character oi the owner name. As you scroll to the left. the
character under the underscore appears above the caret,
- Press the right arrow l> button once to move the caret to the next
character position to the right.
- Press the up or down A V arrow buttons to move the underscore to the
next character,
64 Installation and Operation GUide
MDS 05»3438A01. Rev. 01
249i“?
~ Continue in this way. using the up/down arrow buttons to move the underscore
to a character. then pressing the right arrow button to move to the next
character position
- Press ENTER to save the owner name.
OWN [xxxxx] command,
2 page 45
Twenty-character
u l handn‘ hr
89 E g text/me
arrow buttons (L7 move
the care! 1”) left and
right < >
+ \, Useupanddownarrdw
V buttons ra move the
underscore 0 left and right
Figure 25. Setting the owner name and message
Set Owner This screen is used to set or dispiay text (up to 20 characters) to appear on the
Message radio's start-up screen. such as the srte name. See the Set Owner Name command
and Figure 25 above for instructions.
OWM [xxxxx] command,
page 45
Set Time This screen is used to set or display the time set in the radio, The accuracy at the
date and time are important. because event codes are “stamped" with the date and
i’ t, Time “ms-
1 2 = a 4 = a 3 an _
”a! m 19 99 To change the time. press ENTER. then use the left/right arrow buttons to seiect
the hour, minute. second, or AM/PM. Then use the up/down arrow buttons to
Set Duher‘ N
TIME [TIME hhimmrss
AM/F'M] command.
page 50
ThIS screen is used to set or display the date set in the radio. The accuracy of the
date and time are important because event codes are “stamped" with the date and
time.
To change the date, press ENTER. then use the left/right arrow buttons to seiect
MDS 05»3438A01, Rev. 01 Installation and Operation Guide 65
“um.“u MlCIHWN!
. mm
mm M;
the monthI day. or year. Then use the up/down arrow buttons to increase or
decrease the day or year. or set the month. Repeat for other characters if neces-
sary. Press ENTER again to make the change.
DATE [mmm dd yyyy]
command‘ page 38
GROUP 3—DIAGNOSTICS
Active Radio
Status
ﬁctive Radio Status
mamas ai'esent
(enter For detells)
Event: 23 (MINOR)
Cohriguration error“
This screen is used to display alarm conditions, if any.
It alarms are indicated, press ENTER to display the first alarm, To scroll through
the list oi alarms press the right > or down V arrow button. Press ESCAPE
% STAT command, page 49
to return to the Active Radio Status screen
Fleceive Signal
Strength
Rx Signal Strength
“126 GEN-t
This screen displays the received signal strength in diam.
In a typical master station conﬁguration, the received signal strength is read from
each at the remote transceivers that transmit to the master station in turn.
FlSSI, FtSSI! command.
page 46
S/N Flatlo
S/N Ratio
This screen displays the current signal-to-noise ratio in dBm,
"-‘ SNR, SNR! command,
page 48
Radio Selection
Radio Selecttort
RUTO
Radm R is active
This screen is used to set or display the active transceiver system inside the master
station. When the radio selection is:
AUTO~swltchrover to the inactive transceiver system Will occur it a fault con-
dition occurs on the active transceiver system,
A—lransceiver A is set as the active transceiver system and switch-over will
not occur if an error condition is detected in the radio.
E—transceiver B is set as the active transceiver system and switch-over will
occur it an error condition is detected in the radio,
66
installation and Operation Guide MDS 05-3438A01. Rev. 01
amen“
To change which transceiver system is active. or to enable automatic switch-over.
press the ENTER key. then use the up/down arrow buttons to select AUTO, A or B.
Press ENTER again to make the change.
RADIO [A/B] command,
page 46
Transmitter Status
Transmitter Status
keeed
This screen displays the transmitter state. “Keyed“ means the transmitter is set to
transmit; "dekeyed" means the transmitter is prevented from transmitting. The
transmitter can be keyed or dekeyed by selecting Manual Key lrorn the Contigu~
ration menu (page 62), This setting is used when working on the radio, and the
radio must be keyed to evaluate transmitter output power.
Show Temperature
and Voltages
Show Tena/Uoltage
37° Celsius
1 Uolts Input,
Uolts DuLPul.
3.
This screen displays the radio‘s internal temperature and voltages.
The input voltage is the voltage that connects to the transceiver board and is unreg-
ulated. This voltage is essentially the output lrom the power supply assembly,
The output voltage is read alter a 5.8 Vdc regulator on me transceiver board.
g TEMP command, page 50
Serial Number
SEPIEI Number
99755959
This screen displays the serial number of the active transceiver board. This number
will not match the serial number on the serial number label on the radio
g SER command. page 48
Software Revision
Software Revision
96-3321R92
13.6.8 SRquSQS
This screen displays the internal software par1 number and version number.
g SFtEV command, page 49
Program Standby
Unit
r'cr‘S’t'am Standb'ﬁ Ut’it‘.
Rte uou sure?
No
(change Pending)
This screen is used to initiate a software upgrade at the standby radio A PC must
be connected to the radio via the radios serial port, and a disk containing the soft-
ware upgrade must be in one of the PC‘s drives.
To program the standby unit, press ENTER, The screen displays the prompt "Are
you sure?" Use the up/down arrow buttons to change “No" to "Yes,“ Press ENTER
again to program the standby unit.
MDS 0573438A01, Rev, 01
Installation and Operation Guide 67
mm
mm m,
GROUP 4—EVENT LOG
Event Log
Log l of 1
5x 1/1998 12:98:00
A stem Boot
This screen shows the events logged on the active transceiver board. In many
cases, however. the events leading up to a failure can be reviewed to help deter-
mine the cause of a problem. The event log number. date and time of the event,
and a description of the event are shown.
This screen shows the most recent tog when ﬁrst entered. Use the up/down arrow
buttons to scroll through the stored history of events
LOG [CLR] command,
page 41
Clear Logs
Clear Logs
ﬁre you sure?
No
(shartge Fern-ﬂirt?)
LOG [CLFt] command.
page 41
7.0 TROUBLESHOOTING
The majority of radio operation problems are due to the failure of com-
ponents outside of the radio, out in the elements—usually a poor or
broken feedline or antenna connection. This section will help you deter-
mine whether the problem is outside or inside the radio; and, if in the
radio, how to restore operation as quickly as possible.
MDS does not recommend component-level repair of the transceiver in
the field. However, the major assemblies of the transceiver may be
replaced without the need for tools or test equipment. Section 7.4,
ReplacingAssemblic-s, on page 72 covers this in detail.
If you are unable to solve a system problem with the information pro-
vided here, technical assistance is also available from Microwave Data
Systems. Refer to the inside back cover of this guide for contact infor-
mation.
NOTE: Before starting any detailed troubleshooting, check the basic
requirements at both ends of the link: primary power, secure
cable connections, and proper antenna heading. In many cases,
one of these things may be at fault and cause poor operation or
a complete loss of link service.
7.1 Troubleshooting with LED Indicators
The first indication of a problem is usually an illuminated Alarm LED
on the front panel. In normal operation, only the green (ACTIVE) LED
should be lit (and, in a protected radio, one of the yellow STBY LEDs).
68
Installation and Operation Guide MDS 05-3438A01, Rev, 01
warm
new-nu
mm Hg mm
: ms
In a redUndant master station, the LEDs show the state of the A and B
radios. In a non-redundant master station, the LEDs show the state ofthe
Refer to Figure 26 and the text that follows for an explanation of the
B radio.
LED indicators.
—th$2°;;“
© © © © © ©
mm srlv New mu.- mm Wu
gooooo
my mm mm mm mm
Figure 26. LED Indicators
Table 14. Explanation of front panel LEDs
LED Name Color
Meaning when th
ACTIVE Green Transcetver board (A or B) is the selected unit,
STBY Yaliow Transceiver board (A or E) is currently in standby mode.
(Functional on Protected version only.)
ALARM Red General tault not covered by the alarm categories below (Rx
ALFl. TX ALH. I/O ALFl).
RX ALR Red Difficulty receivingfmay be due to an antenna problem,
recetverlault. or other condition causing no or a weak received
Signal level.
TX ALR Fled Fault with the transmit circuitry, or the transmitter is unkeyed
l/O ALR Red The data rate or format of data at the data interlace connector
is incompatible with the radio settings.
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 69
mm
m,
Oulside radlo
ax Am
Amen/la
Na
3 ‘
inter/emits
Nu
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__L
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m’mﬂ m‘ m 32:33“ "°* numennnhvlwv. ieidlme ox»
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r vuidmg’ ‘ wchizm
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Inside radio
Dm m m immi‘ ‘ r '
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V M yr Chukdimmdaia nﬂem-mguai r Deiuhvelecewev
st "",““““ ‘““—> “mam -—> minim mm“ “m O'Diquaiimenaze
"mm-Wei ‘ m. i “mm "M i “may i
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ninnqs 1
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g ‘7 g
Figure 27. Troubleshooting decision flowchart
70
lnsiailation and Operation Guide MDS 05-3438AO1, Rev. 01
7.2 Troubleshooting Using a Connected PC
Determination of radio status and reprogramming is normally done from
a PC connected to the master station. For troubleshooting suggestions
and procedures, see the MDS lnSite program’s on-line manual
(05-xxxxxxx).
7.3 Troubleshooting Using the LCD Display
Diagnostic Tests
The radio includes several useful tools in the Dlagnostics menu that can
be used to identify system problems. These include local and remote
status screens, loopback configurations, and other internal
tests??7??????7 Brief descriptions ofthese tools are given below. Refer
to Section 6.5, Screen Descriptions for detailed information.
Local and Remote Status Screens
The local and remote status screens can be used to gather impor-
tant information about both ends of the radio link, including
signal strength, BER, signal-to-noise ratio and power output.
Loopback Conﬁgurations
The radio supports several types of loopback tests that can be
performed With external equipment. These tests are very helpful
in evaluating the overall RF and data performance of the system,
A detailed description ofthe loopback tests is covered in Section
65, Screen Descriptions,
Other Tests
The Run Tests screen in the Dlagnostlcs menu can be used to per~
form eight sequential tests on the transceiver’s internal circuitry.
Event Codes
Event codes are another helpful way of identifying system problems.
The radio stores recent events in a log that can be reviewed using the
Event Log screen (for a full description, see Section 6.5, Screen Descrip-
tions). In addition to on-site troubleshooting, the event log messages are
also helpful when calling MDS for technical assistance,
Not all events are considered to be problems. For example, an inten-
tional action such as turning the primary power on will be recorded as
an event even though it is not a true error condition. In many cases, how-
ever, the events leading up to a failure can be reviewed to help determine
the cause of a problem.
MDS 05-3438A01, Rev. 01
Installation and Operation Guide 71
unseat-m "imam"!
,, mm.
mm m
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
- Major alarms generally indicate a hardware failure or other
abnormal condition that will prevent (or hamper) further
operation of the radio link. Generally speaking, major alarms
trigger a switch-over of internal transceiver assemblies on a
protected model.
Connections to a relay that is actuated by these alarms are
provided on the rear panel ALARM connector. (See Figure 13 on
page 18.)
- Minor alarms generally will not prevent operation of the radio
link, but may impair performance. This includes
out-of—tolerance conditions, low signal—to-noise ratios, etc. The
cause of a minor alarm should be investigated and corrected to
prevent an eventual system failure.
Connections to a relay that is actuated by these alarms are
provided on the rear panel ALARM connector. (See Figure 13 on
page 18.)
7.4 Replacing Assemblies
ComponenHevel repair of the transceiver in the field is not recom-
mended due to the complex nature of the circuitry and the use of sur-
face-mount technology throughout the radio Malfunctioning
assemblies should be returned to the factory (or authorized service
center) for repair or replacement.
One approach to field-level servicing is to have spare modules available
for the three easily replaced assemblies of the transceiver—the Main
Transceiver Board, Power Supply, and Front Panel. In this way, a defec-
tive assembly can be quickly removed and replaced with a working unit‘
The following instructions describe the removal and installation ofthese
assemblies.
The primary power to the radio must be disconnected before removing
or installing transceiver or power supply assemblies.
Transceiver Board and Power Supply Assemblies
To remove either of these assemblies, loosen the two captive thumb—
screws at each side of the module, and slide the unit straight out as
shown in Figure 28. (There are no cables to disconnect, as the modules
are fitted with in-line connectors.)
To reinstall these modules, make sure that the slides are properly
aligned with the guide slots on the chassis, and push straight in. Tighten
the thumbscrews to secure the assembly.
72
Installation and Operation Guide MDS 05-3438A01, Rev. 01
“WW,“ mum-v;
m mm
‘4 “WAVE sverMs
MAIN TRANSCEIVER
BOARD
POWER SUPPLY
Figure 28. Main transceiver and power supply removal
Front Panel
The front panel is secured to the chassis with spring-loaded latches. To
remove the panel, simply pull oul at the bottom edge until it is free from
the chassis (Figure 29). You will also need to disconnect the modular
cable from the back of the panel. Reverse these steps to re-insiall the
from panel on the chassis.
Figure 29. Front panel removal/replacement
MDS 05»3438A01, Rev, 01
Installation and Operation Guide 73
“gnaw“ Mlcwclwms
mm, ,, i mm
mm:
8.0 TECHNICAL REFERENCE
8.1 Technical Specifications
Table 15. Technlcal speclfications
GENERAL
Size:
Weight:
Frequency Range:
T/R Separation:
RF Occupied Bandwidth:
Antenna Impedance:
Data Rates:
Data Interface:
Modulation Type:
Temperature Range:
Humidity:
Environmental:
EMC:
System Gain;
Voltage Ranges:
24 Vdc Power Supply
45 Vdc Power Supply
110/220 Vac Power
Supply
Power Cnnsumptlon:
Data Latency:
2RU (88.90 rum/3 5 inch) high
363 mm (M 3 in) deep
437 mm (17 2 in) wide
—inc|udes duplexer and power supply
9 kg (19.5 lbs)
BWQGO MHz
Front panel programmable. duplexer, and nelicallllters
may require retuning,
(Refer to Figure 4 on page 5 for hardware band limits)
5052
300. 1200, 2400. 4800, 9600, 19200, 38400 bps
asynchronous
EUR-232
O to 50°C guaranteed operation
95% non-condensrng
llOdB
19 4 IO 37 VdC
36 to 75 Vdc
30 Watts
7 ms maximum at 9600 bps
DIAGNOSTIC
FUNCTIONS
Local Indicators'
Remote Indicators:
Measurements:
Remote Readings:
Actlve, standby. General Alarm, TX Fault, RX Fault,
I/O Fault
Minor and major alarm relay contacts
(Available on rear panel)
RSSI, Power, S/N, BER, Alarms
Remote HSSI, S/N, BER and alarms vra embedded
diagnostic data stream (HS-232—type port at rear
paneU
h—
74 Installation and Operation Guide
MDS 05—3438A01, Rev. 01
5531...“ ”J ‘
Table 15. Technical specifications (Continued)
Loopback: Local digital iocpbaek. Local HF loopback, Remote
digital loopback
RECEIVER
Ser‘SW‘Y 789 dBm for 1 x we BER
792 dBm for 1 x10“3 BER
Residual BER: ‘ x 10—10
Dynamic Range: From sensitivity to 40 dErn better lhan 1 x 1045 BEH
TRANSMITTER
Power Output' +27 dBm (500 mW) out of duplexer
(approx. +2615 dBm out of transmitter)
Frequency Stability 1.5 ppm
Spurious Outputs Less than —60 dBm
Duty Cycle: Continuous/IOO%
8.2 RF Propagation Planning
Establishing a reliable point-to-point radio link requires system plan-
ning and design. It is helpful to have an understanding of the physical
parameters affecting propagation The following material discusses
these factors and will assist you in designing a dependable transmission
path for your radio link.
NOTE: This section is intended for use as a guideline when planning
transmission paths. It does not consider all of the local condi-
tions that may be present, nor does it guarantee that adequate
signal strength will be obtained in a given system. There is no
substitute for an on—the-air test to verify the predicted path
results, and to check the overall operation of the radio system.
To ensure a highly reliable path, a line of sight between both ends of the
link is desirable. For short paths (up to 5 kilometers/3.1 miles), some
obstructions may be acceptable, but the performance of a blocked path
is always less predictable than a clear path.
Fresnel Zone Clearance
As the distance spanned by a link gets longer, it is necessary to have
more lhanjust a grazing path between the two ends; the path must clear
the ground or other obstacles by some percentage of a Fresnel zone.
The Fresnel zone corresponds to the width or girth of the radio signal.
There are first, second, and third Fresnel zones, but the ﬁrst zone is the
only one that has substantial effects on signal strength.
MDS 05—3438A01, Rev. 01 Installation and Operation Guide 75
cAumlwlA "Ht-WM
m.
Mrmm m“
The first Fresnel zone can be visualized as an oval-shaped volume
between two station antennas (Figure 30). As the width of the radio
wave front gets blocked by obstructions, less of the signal can get to the
receiver antenna,
In addition to blocking the signal, obstructions in the first Fresnel zone
may also cause multipath interference due to reﬂective and refractive
signal paths The reﬂected or refracted signal may arrive at the receiver
out of phase with the desired signal and cause a cancelling effect.
LlNE-OF-SlGHT tins!
FRESNEL mus
srmcu A
STAYlON a
mum 0,
NOT
ussmucrm
oes‘mucva
Flgure 30. Fresnel zone obstructlons
As a matter of practice, 60 percent ofthe first Fresnel zone must be clear
of obstructions (0.6 x F) to allow a clear, unobstructed microwave path.
Remember, the first Fresnel zone calculation is only one parameter
determining path quality.
Earth Curvature
As the distance of a communication link increases, the clearance
problem is compounded by the earth’s curvature. Radio waves traveling
through typical atmospheric conditions bend slightly, which is repre-
sented by treating the earth as though it were slightly ﬂatter than it actu-
ally is. Experience has shown that if we consider the earth’s radius to be
4/ 3rds of its actual size, we get good agreement between theory and mea-
sured propagation results.
Figure 31 shows a representation of the 4/3 earth “radio horizon.” This
figure shows that under normal radio propagation conditions, a station
with its antenna 15 meters above ﬂat terrain will have a radio horizon
approximately 15 kilometers away, well beyond the visual horizon.
76 Installation and Operation Guide MDS 05-3438A01. Rev. 01
.m
m mm ,
«7 a smixraisazaazzsxaetzwwszsssa
wt (21 u} <6] ill (in) no m) M) (val R“! my lb) (26: mt l”) (321 on l36l
Radio Hollzmn Over Level Terrain in Kilometers (Miles)
Normal Conditions
Figure 31. Antenna height vs. theoretical radio horizon
Fade Margins
Variations in the temperature and humidity of the atmosphere with ele-
vation cause the signals to bend more or less, resulting in fading at the
receiver. The longer the path is, the more likely that deep fades will
occur, hence the greater the fade margin required.
Different parts of the world have differing propagation conditions,
which can be categorized as favorable, average, or adverse In general,
mountainous areas have favorable propagation conditions, while trop—
ical areas and those near large bodies of water have adverse conditions.
Calculating Path Loss
Assuming that we have satisfied the line-of—sight and first Fresnel zone
clearance requirements, we can calculate the path loss. At 450 MHz, the
loss between two isotropic radiators (0 dBi antennas) that are 1 km apart
is 86 dB. For every doubling of distance, the 1055 increases by an addi-
tional 6 dB. Knowing this, the output power (+25 dBm), and the receiver
sensitivity (-90 dBm), we can calculate antenna size and tower height
requirements to cover any desired distance.
8.3 Formulas for System Planning
The following standard formulas are provided for assistance in deter-
mining system installation parameters
Free Space Path Loss
“f: : 92.4 + 2010gmf+ 2010gwd
Where:
MDS 05-3438A01. Rev. 01
Installation and Operation Guide 77
of: = free space loss in dB
d = path distance in kilometers
f : frequency in GHz
Parabolic Antenna Gain
G = (20)logm(7.4Df)
Where:
G = antenna gain in dBi
D = dish diameter in meters
f = frequency in GHZ
This formula assumes a typical 50 percent antenna illumination effi-
ciency, and is representative of a full parabolic antennae
Fresnel Zone Boundary
nd
lull—
n fD
F" : Fresnel zone boundary in meters
a,
I]
d, = distance from one end of the path to the Fresnel zone
boundary (in kilometers)
dz = distance from the other end of the path to the Fresnel zone
boundary (in kilometers)
D = total palh distance (dd—dz) in kilometers
f = frequency in GHz
n = Fresnel zone, 1 (for lst) is used here
Theoretical Signal Strength
RSSI = EIRP — afs + Gm _er1
Where:
RSSI = signal strength at the receiver in dBm
EIRP = RF power output in dBm + Gm —Lm
of; = free-space path loss in dB
Gm : receive antenna gain in dBi
Lrﬂ = receive feedline loss in dB
Left = transmit feedline loss in dB
78 Installation and Operation Guide MDS 05-3438A01, Rev. 01
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
uuFﬂI~IA ”HM“
MIZIDWAV! mm“
Gm = transmit antenna gain in dBi
Probability of System Fading
—7 3 —F /10
FProb = axbx6.0x10 xfxd x10( )
Where:
FProb = probability of fading more than F
a = terrain factor
0 4 is used for very smooth terrain, such as over water
' 1 is used for average terrain, with moderate roughness
' 0.25 is used for mountainous or very rough terrain
b : climate factor
- 0.5 is used for a hot, humid climate
' 0.25 is used for temperate or northern areas
' 0.125 is used for a very dry climate
f = frequency in GHz
d = path length in km
F = fade margin in dB
8.4 Bench Testing Setup
Figure 32 shows a sample test setup that can be used to verify the basic
operation of the MDS 9790 radio. This test can be performed with any
number of remote radios by using a power divider with the appropriate
number of output connections
The RTU simulator shown in the test setup (MDS Pan No, 03-2512A01)
is a microcontroller that emulates a remote terminal unit operating at
1200, 2400, 4800, or 9600 bps. Software is supplied with the RTU sim-
ulator that allows continuous polling of remote radios. The software
reports the number ofpolls sent, polls received, and the number of errors
detected. The software runs on an IBM-compatible personal computer
connected to the DIAGNOSTIC PORT on the master station.
It is very important to use attenuation between all units in the test setup.
The amount of attenuation required depends on the number of units
being tested and the desired signal strength (RSSI) at each transceiver
during the test. In no case should a signal greater than —50 dBm be
applied to any radio in the test setup,
MDS 0573438A01, Rev. 01
Installation and Operation Guide 79
minim
“urns-"A
MA
mm“ m”;
COMPUTER RUNNING MDS HTU slMuLATcFls
“FOLLEXE” PROGRAM MDS P/N 03—2512A01
REMOTE
REMOTE
MASTER STATION
POWER ATTENUATOHS / i R NDN»RADIATING ATTENUATCR
-Fn(ed m amusxame .ms1a|| on any unussﬂ was: pans
-5w Mwmmum Hating ~ sw Mlmmum Haring
Figure 32. Bench test setup
8.5 Duplexer and Helical Filter Retuning
To be supplied.
80 Insiallation and Operaﬁon Guide MDS 05-3438A01, Rev. 01
8.6 dBm-Watls-Volts Conversion Chart
Table 16 is provided as a convenience for determining the equivalent
voltage or wattage of an RF power expressed in dBm.
Table 16. dBm-Volts-Watts conversion chart
dBm v Po dBm v Po dEm mV Po dBm uV Po
+53 100.0 200W 0 225 1 0mw 40 0 so -90 25
~50 70 7 wow 4 200 somw -50 0 71 .010w 09 2.51
449 64 0 m -2 150 .64mW -5l 0 S4 400 2,25 .lpW
440 50.0 saw 0 .1 50 50111W -52 0.57 401 2 0
747 500 sow —4 141 .40mw 53 0 50 402 1.0
046 44.5 447W -5 |25 32mW -54 0.45 403 1 S
445 400 32W 5 115 zsmw 55 040 404 1.41
444 32.5 25W .7 100 20mw 55 0.351 405 1.27
443 32 0 20W 0 090 15mw 57 0 32 405 1.10
442 20.0 15W -9 000 125mw 55 0.205
441 25 2 12 EM 40 071 1me 50 0.251 dam nV Pa
440 225 10W 41 054 50 0.225 ODIyW 407 1000
130 20 0 aw 42 050 51 0.200 4 03 900
«30 10.0 5.4w 40 050 452 0,100 4 09 500
137 10.0 5w 44 045 -53 0,100 410 710 ~D|DW
435 14.1 M 45 040 54 0.141 4“ 540
as 12.5 3.2w 46 0055 412 550
434 11,5 2.5w 05111 W Po 41:1 500
+33 1017 zw dBm mv P0 55 125 414 450
132 9 0 WW 47 31 5 55 115 415 400
13‘ 3-0 '»25W 40 205 457 100 415 355
13° 7-‘0 ‘ “W 49 25.1 750 90 417 025
129 644° WWW 720 22.5 .01mw 59 50 410 205
128 550 “MW -21 20,0 770 71 .1nw 419 251
127 5-00 500mW 22 17.0 -71 55 420 225 ,oo1pw
125 445 “MW -23 15.0 772 50 421 200
125 400 320m” 24 14 1 7:1 50 422 150
+2A 155 WWW as 12.0 -74 45 42:1 160
123 320 ”MW -26 11 5 75 40 424 141
122 2-80 150mW 27 10.0 -75 35 425 125
+2‘ 2 52 125m” -20 0.0 -77 32 425 117
120 2-25 WNW 729 00 ~70 29 427 100
1‘9 2-00 ”NW 410 7.1 .001mw 49 25 420 90
115 £30 MW 51 s 25 410 22.5 01 71W 429 00 .1,1w
47 LS“ MW -32 5,0 51 20.0 4 30 71
dB Mt MW 23 50 -02 10.0 431 01
"5 ‘25 32mW 24 4.5 53 15,0 4 32 50
114 t ‘5 251W 55 4.0 -04 11.1 433 50
"3 ‘ 00 WNW as 3.5 435 12 9 4 34 45
”2 90 ”NW 07 0.2 05 11,5 435 40
411 60 12<5mW 50 2.05 07 10 0 435 35
110 7‘ WNW 00 2 5 430 9.0 4 37 as
19 464 MW 40 2.25 1 MW 410 a 0 4 30 2s
+8 58 6-4mW 41 2 0 -90 7.1 ,0o1nw 4 00 25
17 600 51W 42 10 -01 6.1 440 23 mm
16 A45 4'"W 4:1 1 5 792 5.75
15 40° 3.2mw 744 1.4 $0 5.0
24 355 2 5mW 45 1 25 $4 4 5
03 320 “MW 45 1.10 05 40
12 23“ “MW 47 1.00 as 3 51
+1 252 1.25mw 40 0.90 37 32
-—-——h—_—_
MDS 05-3438A01. Rev. 01 Installation and Operalion Guide 81
autumn. mm
Mic-om mmAms
NOTES
———__———
82 Installatwon and Operation Guide MDS 05-3438A01, Rev. 01
nun-mum mam
Dummy-vs mus
NOTES
E—
MDS 05-3438A01. REV. 01 Inslallatw‘on and Operation Guide 83
Eﬁﬂﬁm“
"WWW“
NOTES
84 Installatmn and Operation Guide MDS 05-3438A01, Rev 01
IN CASE OF DIFFICULTY...
MDS 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 informa—
tion will assist you in the event that servicing becomes necessary.
FACTORY TECHNICAL ASSISTANCE
Technical assistance for MDS products is available from our Customer Support Team during
business hours (8:00 AMA—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 expe»
rieneing. 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 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 lo the factory for any PC board
repairs. The factory is best equipped to diagnose, repair and align your radio to its proper oper-
ating 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 radial 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
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,
CA IFCIHNIA HAgRDWAVE
MICROWAVE SYSTEMS
175 Science Parkway
Rochester, New Yark 14620, USA
General Business: +1 (716) 242-9600
FAX—Ali Services: +1 {716} 242-9620
World Wide Web: hrfp://www.mdsroc.com/

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