GE MDS DS24810 User Manual 46260

GE MDS LLC 46260

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ES'MOS 5241540
Attachment 1
Installation 8- Operation
Manual
MDS 981 0/24810
900 MHz/2.4 GHz
Spread Spectrum
Data Transceivers
MDS 05-3301A01, Rev. A
FEBRUARY 1999
‘z E! ADAPTIVE BROADBAND”
On April 29, 1999. California Microwave Corporation became
Adaptive Broadband Corporation. Any references in this
manual to California Microwave Corporation or Microwave
Dala systems have heenassuned bymeAdapﬁva Broadbmd
Corporation.
QUICK START GUIDE
Below are the basic steps tor installing the transceiver. Detailed instructions are given in “INSTALLA-
TION" on page 22 of this guide.
1. Install and connect the antenna system to the radio
- Use good quality, low-loss coaxial cable. Keep the feedline as short as possible.
- Preset directional antennas in the direction of desired transmission.
2. Connect the data equipment to the radio’s INTERFACE connector
- Connection to the radio must be made with a DB-zs Male connector. Connections for typical sys-
tems are shown below.
- Connect only the required pins. Do not use a straight-through PIS-232 cable with all pins wired.
- Verity the data equipment is conﬁgured as DTE. (By default, the radio is conﬁgured as DOE.)
pm to Ms iii-mole new to Beds Example
cumuimm-wam
Ohmmmhwm
3. Apply DC power to the radio
- Observe proper polarity. The red wire is the positive lead; the black is negative.
4. Set the radio’s basic configuration with a Hand-Held Terminal (HHT)
- Set the baud rate/data interface parameters as lollaws. Use the BAUD xxxxx abc command. where
xxxxx equals the date speed and also equals the communication parameters as follows:
a = Data bits (7 or a)
b=Parity(NtorNone,OiorOdd, EibrEven
c = Step bits (1 or 2)
(Example: BAUD 9600 BN1)
NOTE: 7N1, BE2 and 802 are invalid parameters and are not supported by the transceiver.
5. Verify proper operation by observing the LED display
- Refer to Table 7 on page 32 (or a description at the status LEDs.
~ Refine directional antenna headings for maximum receive signal strength using the RSSI commend.
TABLE OF CONTENTS
MDS 05-3301A01, Rev. A
1.0 ABOUTTHIS MANUAL 1
2.0 PRODUCT DESCRIPTION ......................................................... 1
Transceiver Features ......
Model Configuration Codes
2.1 Spread Spectrum Radios—How Are They Different?
2. 2 Typical Applications .......
Multiple Address Systems (MAS
Simplex “Peer-to-Peer”...
Peer- to-Peer with Repeater Assistance.
Point— -to-Point System...
Tail- End Link (“MAS Extension').
Repeater Arrangement
23 Accessories
3.0 GLOSSARY OF TERMS......
4.0 INSTALLATION PLANNING.
4.1 General Requirements
4.2 Site Selection ..........
Terrain and Signal Strength
Conducting a Site Survey.
4.3 A Word About Radio Interference .
4.4 Antenna & Feedllne Selection
Antennas .
Feedlines .
4.5 How Much Power Can I Run?
For All MDS 9810 Systems
For MAS Point-to—Multipoint Systems (MDS 24510).
For Point- to-Point Systems (MDS 24810)
5.0 INSTALLATION.
5.1 Transceiver Installation .
5.2 Peer-to-Peer Systems
Simplex Peor-to—Peer..
Peer-tovPeer with Repeater Assistance
5.3 Tail-End Links
5.4 Repeaters
5.5 Using the Radio’s Sleep Mode
System Exampl
MDS 9810/24810 Installation and Operation Guide i
mm... w
Mum m
6.0 OPERATION
6.1 Initial Stan-up
6.2 Performance Optimization .
Antenna Aiming
Antenna SWR Chedx
Data Buffer Setting
Hoplime Setting
Baud Rate Setting
Radio Interference Checks ...........................................................
7.0 PROGRAMMING ......
7.1 Hand-Held Terminal Connection Br Start-up .................
7.2 Hand-Held Terminal Setup
7.3 Keyboard Commands
Entering Commands
Error Messages .......
7.4 Detailed Command Descnptlons .
ADDR [1.. ...65000].
AMASK [0000 OOOO—FFFF FFFF].
ASENSE [HI/L0]
BAUD [xxxxx abc].
BUFF [ON, OFH
CTS [0—255] .....
CTSHOLD [Cl-6000] .
DEVICE [DCE, CTS KEY]
DLINK [roooot]
DMGAP [xx]...
DTYPE [MODE/ROOTIGATE/PEER].
HOPTlME [XSHORT, SHORT, NORMAL, LONG]
INIT....
MODE [M. R. Ft-M]
Hangman
aah
mmxr
RXTOT [NONE 0—14-40]
SETUP... ..
SHOW [PORT, DC, PWR
SIMPLEX [ON OFF]
SKIP [NONE, 1...B
SNR
SREV
STAT
TEMP.
TX [xxxx]
UNIT noon-65000] .
asseeéﬂegeaaeea
ii MDS 9810124810 Installation and Operation Guide MDS 05-3301A01, Rev. A
-§='§'.."""
ZONE DATA
ZONE CLEAR
8.0 TROUBLESHOOTING.........
8.1 LED Indicators
8.2 Alarm Codes
Checking for Alarms—STAT command.
Major Alarms vs. Minor Alarms
Alarm Code Deﬁnitions ......
8.3 Performing Network-Wide Remote Diagnostics .
DLlNK [iooooc].
DTYPE [NODE/R GATE/PEER]
8.4 Troubleshooting Chart
9.0 TECHNICAL REFERENCE ..
9.1 Technical Specifications
9.2 RSSI Checks with a Vollmetsr .
9.3 Data Interface Connections (DB-25)
9.4 Bench Testing Setup .
9.5 Using Radio Conﬁguration Software
Connecting a PC ....................
Upgrading the Radio's Software.
9.6 dBm-Watts-Volts Conversion Chart
INDEX...
lN CASE OF DIFFICULTY. ................................ INSIDE REAR COVER
Copyright Notice
This Installation and Operation Guide and all software described herein
are protected by copyright: 1999 Microwave Data Systems, a division
of California Microwave, Inc. All rights reserved.
Microwave Data Systems reserves its right to correct any errors and
omissions.
Operational Safety Notices
HF Exposure The radio equipment described in this guide uses radio frequency trans-
mitters. Although the power level is low, the concentrated energy from
a directional antenna may pose a health hazard. Do not allow people to
( 0 ) come in close proximity to the front of the antenna when the transmitter
A is operating.
This manual is intended to guide a professional installer to install,
operate and perform basic system maintenance on the described radio.
MDS 05-3301A01, Rev. A MDS 9810124910 Installation and Operation Gulde Iii
mire.-
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.
FMIUL/CSA Notice
MDS 9810 & MDS 24810 When Approved
This product is available for use in Class I, Division 2, Groups A, B,
C & D Hazardous Locations. Such locations are deﬁned in Article 500
of the National Fire Protection Association (NFPA) publication NFPA
70, otherwise known as the National Electrical Code.
The transceiver has been recognized for use in these hazardous locations
by three independent agencies —Underwriters Laboratories (UL), Fac-
tory Mutual Research Corporation (FMRC) and the Canadian Standards
Association (CSA). The UL certiﬁcation for the transceiver is as a Rec-
ognized Component for use in these hazardous locations, in accordance
with UL Standard 1604. The FMRC Approval is in accordance with
FMRC Standard 3611. The CSA Certiﬁcation is in accordance with
CSA STD C221 No. 213-M1987.
FM/UIJCSA Conditions of Approval:
iv MDS 9810/24810 Installation and Operation Guide MDS 05-3301 A01, Rev. A
c m... an“...
_s-‘=-‘...
The transceiver is not acceptable as a stand-alone unit for use in the haz-
ardous locations described above. It must either be mounted within
another piece of equipment which is certiﬁed for hazardous locations, or
installed within guidelines. or conditions of approval, as set forth by the
approving agencies. These conditions of approval are as follows:
1. The transceiver must be mounted within a separate enclosure which
is suitable for the intended application.
2. The antenna feedline, DC power cable and interface cable must be
routed through conduit in accordance with the National Electrical
Code.
3. Installation, operation and maintenance of the transceiver should be
in accordance with the transceiver‘s installation manual, and the
National Electrical Code.
4. Tampering or replacement with non-factory components may
adversely affect the safe use of the transceiver in hazardous loca-
tions, and may void the approval.
5. When installed in a Class I, Div. 2, Groups A, B, C or D hazardous
location, observe the following:
WARNING —EXPLOSION HAZARD— Do not disconnect equip-
ment unless power has been switched off or the area is know to be
non-hazardous.
Refer to Articles 500 through 502 of the National Electrical Code
(NFPA 70) for further information on hazardous locations and approved
Division 2 wiring methods.
FCC Notice, U.S.A.
MDS 9810 & MDS 24810 When Approved
The MDS 9810/24810 transceivers comply with Part 15 of the FCC
Rules. Operation is subject to the following two conditions: (1) this
device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause
undesired operation.
This device is speciﬁcally designed to be used under Section 15.247 of
the FCC Rules and Regulations. Any unauthorized modiﬁcation or
changes to this device without the express approval of Microwave Data
Systems may void the user’s authority to operate this device.
Furthermore, this device is indented to he used only when installed in
accordance with the instructions outlined in this manual. Failure to
comply with these instructions may also void the user's authority to
operate this device.
MDS 05—3301 A01, Rev. A MDS 9810/24810 Installation and Operation Guide v
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 exacts speciﬁcation for a product, please
contact our Customer Service Team using the information at the back of
this guide. In addition, manual updates can often be found on the MDS
Web site at www.microwavedata.com.
vi
MDS 9810124810 Installation and Operation Guide MDS 05-3301A01. Rev. A
—'i'§7.'.""
1.0 ABOUTTHIS MANUAL
This guide presents installation and operating instructions for the
MDS 9810 and 24810 transceivers. Following installation, we suggest
keeping this guide near the equipment for future reference.
2.0 PRODUCT DESCRIPTION
The transceivers, shown in Figure 1, are spread spectrum radios
designed for license~free operation in the 900 MHz (9810) or 2.4 GHz
(24810) frequency band. Employing microprocessor control and Digital
Signal Processing (DSP) technology, they are highly reliable for
long-distance communications, even in the presence of weak signals or
interference.
DSP technology also makes it possible to obtain information about radio
operation and troubleshoot problems. without going to the remote radio.
By simply connecting to the master station, diagnostic data can be
obtained on any DSP radio in the system, even while payload data is
being transmitted. (See “Performing Network—Wide Remote Diagnos-
tics” on page 57.)
The transceiver is housed in a compact and rugged die-cast aluminum
case that need only be protected from direct exposure to the weather. It
contains a single printed circuit board with all necessary components for
radio operation. No jumper settings or adjustments are required to con-
ﬁgure the radio for operation.
SERIAL NUMBER
LABEL
LED INDICATORS (4)
EXTERNAL
INTERFACE
CONNECTOR
(DB-25)
DIAGNOSTICS
CONNECTOR (RJ-1 1)
13,8 VDC POWER
CONNECTOR
ANTENNA CONNECTOR
(TYPE 'N")
Figure 1. MDS 9810/2481!) Transceiver
MDS 05—3301 A01. Rev. A MDS 9810124810 Installation and Opemﬁon Guide 1
THIS INFORMAﬂON IS
SUBJECT TO CHANGE.
DO NOT USE FOFI PROD-
UCT ORDERING.
MDS 9810124810 Installation and Operation Guide
Transceiver Features
Listed below are several key features of the MDS 9810/24810 trans—
ceivers These are designed to ease the installation and conﬁguration of
the radio, while retaining the ability to make changes in the future.
- 1,019 frequencies over 902—928 MHz (9810) or 2.4~2.4835
GHz (24810), subdivided into eight frequency zones
- Conﬁgurable operating zones to omit frequencies with constant
interference
. 65,000 available network addresses
- Network-wide conﬁguration from the master station; eliminates
most trips to remote sites
' Data transparency—ensures compatibility with virtually all asyn-
chronous SCADA system RTUs
- Peak-hold RSSI, averaged over eight hop cycles
- Operation at up to 19200 bps continuous data flow;
38400 bps non-continuous
- Same hardware for all supported data rates:
1200, 2400, 4800, 9600, 19200, 38400 bps asynchronous
- Same hardware for master or remote conﬁguration
- Data latency typically less than 10 ms
' Supports BIA—232 (formerly called RS—232) user interface
- Low current consumption—30 mA or less average draw in
“sleep" mode.
Model Conﬂguratlon Codes
The radio model number is printed on the end of the radio enclosure, and
provides key information about how the radio was conﬁgured when it
was shipped from the factory. See Figure 3 and Figure 3 for an explana-
tion of the model number characters.
OPERATION AGENCVAPPROVAL
X: Remote/Mam N= WA
”9065. POWER SETTING m
‘= MWMN mos-awn: MOUNTINGBRACKETS
A: sherﬂ
& None
1 Elm-IIIIJ
L|
DIAGNOSTICS
0= None
1: Non-Imusive
248
Figure 2. MDS 24810 transceiver model conflgurutlon codes
MDS 05-3301AD1, Rev. A
THIS INFORMA'HON IS
SUBJECT TO CHANGE.
DO NOT USE FOR PROD-
UCT ORDERING.
5mm“ '
QPERATlON $5]:va APPROV‘L
x= Romute/Master F: FOC/IC
PACKAGE SlFETV APPROVAL
|= Trulleeivsr only ,=°~,V0F$_§§E";G L0: ”ML/GSA
[ noun-nus BRACKEIS
98 — A: Standard
\_\ E None
DMGPDS'HCS
o= None
1: Non-Intrusive
Figure 3. MDS 9810 transceiver model conﬁguration codes
2.1 Spread Spectrum Radios—How Are They
Different?
The main difference between a traditional (licensed) radio system and
the MDS 9810/24810 transceivers is that these units “hop” from channel
to channel many times per second using a speciﬁc hop pattern applied
to all radios in the network. A distinct hopping pattern is provided for
each of the 65,000 available network addresses, thereby minimizing the
chance of interference with other spread spectrum systems. In the USA,
and certain other countries, no license is required to install and operate
this type of radio system.
2.2 Typlcal Applications
Multiple Address Systems (MAS)
This is the most common application of the MDS 9810/24810 trans-
ceivers. It consists of a central control station (master) and two or more
associated remote units. as shown in Figure 4. An MAS network pro
vides communications between a central host computer and remote ter-
minal units (RTUs) or other data collection devices. The operation of the
radio system is transparent to the computer equipment. When used in
this application, the transceiver provides an excellent alternative to tra-
ditional (licensed) MAS radio systems.
MDS 05-3301A01, He’ll. A
MDS 9810124810 Installation and Operation Guide 3
Figure 4. Typical MAS network
Simplex “Peer-to-Peer"
Peer-to-peer communication is possible using the transceiver’s simplex
mode. With this arrangement (Figure 5), two or more remote units can
share information by direct communication with each other in addition
to communicating with a central master radio. This is possible because
the transmit and receive frequencies for each hop channel are the same
at each radio when simplex mode is enabled. If adequate transmission
paths exist, each radio can communicate with all other units in the net-
work Additional details for peer-to—peer systems are provided in
Section 5.2 (page 26).
resume!
Figure 5. Typical slmplox “peer-to-peer" network
MDS 9810/24810 Installation and Operation Guide
MDS 05-3301A01, Rev. A
”m.” “‘
Peer-to-Peer with Repeater Asslstanoe
Peer—to-peer communication is also possible using this alternate
arrangement (see Figure 6). It overcomes the range limitations of a sim-
plex peer-to—peer system by using a repeater to re-transmit the signals of
all stations in the network. The repeater consists of two radios—one pm-
grammed in the remote-master mode, and the other programmed as a
conventional master. Additional details for peer—to-peer systems are
given in Section 5.2 (page 26).
Figure 6. Typical peer-tape“ network with repeater assistance
Polnt—to-Point System
A point-to-point conﬁguration (Figure 7) is a simple arrangement con—
sisting of just two radios—a master and a remote. This provides a Sim»
plex or half-duplex communications link for the transfer of data between
two locations.
REMOTE name
Figure 7. Typical polnt-to—point Ilnk
MDS 05-3301 A01, Rev. A
MDS 9810124310 Installatlon and Operation Guide 5
-§m..“ ‘
Tall-End Llnk (“MAS Extension")
A tail-end link can be used to extend the range of a traditional (licensed)
MAS system. This might be required if an outlying site is blocked from
the MAS master station by a natural or man-made obstruction. In this
arrangement, an MDS 9810/24810 radio links the outlying remote site
into the rest of a licensed MAS system by sending data from that site to
a companion MDS 9810/24810 installed at one of the licensed remote
sites. (See Figure 8).
As the data from the outlying site is received at the licensed remote site,
it is transferred to the licensed radio (via a local cable connection) and
is then transmitted to the MAS master station in the usual manner. Addi-
tional details for tail-end links are given in Section 5.3 (page 29).
nenursn
ins-ammo
mm mm:
msvmu (”man UNLICENED) unsmm “axiom ounvmcsrrz
ﬁgure 8. Typical tail-end link arrangement
Repeater Arrangement
Although the range between MDS 9810 radios is typically 10 to 15 and
6 to 10 miles for MDS 248 W radios (over average terrain), it is possible
to extend the range by connecting two units together in a “back-to—back”
fashion to form a repeater, as shown in Figure 9. Additional details for
repeater systems are given in Section 53 (page 29).
6 MDS 9810/24810 Installation and Operation Guide MDS 05-3301A01, Rev. A
Figure 9. Typical repeater system configuration
2.3 Accessories
The MDS 9810/24810 tmnsceivers can be used with one or more of the
accessories listed in Table 1. Contact MDS for ordering information.
Table 1. Accessories
Accouory Description MDS PIN
Hand-Held Terminal that plugs into the radio’s FiJ-11 02-1501A01
Terminal Kit DIAGNOSTICS) connector. Allows redio
(HHT) programming, diagnostics A control. Includes
carrying case, cable set and manual.
FiTiJ Simulator Test unit that simulates dale lrom a remote 03-2512Ao1
terminal unit Comes with polling software that
mns on a PC. Useful ieriesting redlo operation.
Radio Windows—based software that allows radio 03-3158AO1
Configuration programming and control using a PC. includes
Software on-line Instmctions. (See Section 9.5 (page 66)
for PC connection details.)
EIA~232 to External adapter that converts the radio’s DATA 03-2358AO1
ElA~422 lNTEFlFACE connector to EIA~422 compatible
Convener signaling. May be required for long cable runs
(over 50 leer/15 meters). DES-25 iemale BIA—422
connector.
TTL Convener External adapter used to oommrt the radio’s 03-2223AD1
DATA INTERFACE mnnectorlo 111 compatible
signaling. DB-Iﬁ female TTL connector.
—\
MDS 05-3301A01, Flew A
MDS 9810/24810 Installation and Operation Guide
unnum-
WM 555.
3.0 GLOSSARY OF TERMS
If you are new to spread spectrum radio, some of the terms used in this
guide may be unfamiliar. The following glossary explains many of these
terms and will prove helpful in understanding the operation of the trans—
ceiver.
Antenna System Gain—A ﬁgure, nomtally expressed in dB, repre-
senting the power increase resulting from the use of a gain-type antenna.
System losses (from the feedline and coaxial connectors, for example)
are subtracted from this ﬁgure to calculate the total antenna system gain.
Bil—The smallest unit of digital data, often represented by a one or a
zero. Eight bits (plus start, stop, and parity bits) usually comprise a byte.
Bits-per-second— See BPS.
BPS—Bits-per-second. A measure of the information transfer rate of
digital data across a communication channel.
Byte—A string of digital data usually made up of eight data bits and
start, stop and parity bits.
Decibel (dB)—A measure of the ratio between two signal levels. Fre-
quently used to express the gain (or loss) of a system.
Data Circuit-terminating Equipment—See DCE.
Data Communications Equipment— See DCE.
Data Terminal Equipment— See DTE.
dBi—Decibels referenced to an “ideal” isotropic radiator in free space.
Frequently used to express antenna gain.
dBm—Decibels referenced to one milliwatt. An absolute unit used to
measure signal power, as in transmitter power output, or received signal
strength.
DCE~Data Circuit—tenninating Equipment (or Data Communications
Equipment). In data communications terminology, this is the “modem"
side of a computer-to—modem connection. The MDS 9810/24810 naus-
ceivers are DCE devices.
Digital Signal Processing—See DSP.
DSP—Digital Signal Processing. In the MDS 9810/24810 transceivers,
the DSP circuitry is responsible for the most critical real—time tasks; pri-
marily modulation, demodulation, and servicing of the data port.
s MDS 9810/24810 Installation and Operation Gulde MDS 05-3301A01, Rev. A
Eta—m“ '
DTE —Data Terminal Equipment. A device that provides data in the
form of digital signals at its output. Connects to the DCE device.
Equalization—The process of reducing the effects of amplitude, fre-
quency or phase distortion with compensating networks.
Fade Margin —The greatest tolerable reduction in average received
signal strength that will be anticipated under most conditions. Provides
an allowance for reduced signal strength due to multipath, slight antenna
movement or changing atmospheric losses. A fade margin of 20 to 30
dB is usually sufﬁcient in most systems.
Frame—A segment of data that adheres to a speciﬁc data protocol and
contains deﬁnite start and end points. It provides a method of synchro-
nizing transmissions.
Frequency Hopping—The spread spectrum technique used by the
MDS 9810/24810 transceivers, where two or more associated radios
change their operating frequencies several times per second using a set
pattern. Since the pattern appears to jump around, it is said to “hop"
from one frequency to another.
Frequency Zone—The transceivers use up to 1,019 discrete channels
in the 902 to 928 MHz (9810) or 2.4 to 2.4835 GHz (24810) spectrums.
A group of 128 channels is referred to as a zone. The transceivers use
eight frequency zones. (Five channels are reserved for network control
mimosa.)
Hardware Flow Control—A transceiver feature used to prevent data
buffer overruns when handling high-speed data from the RTU or PDC.
When the buffer approaches overﬂow, the radio drops the clear-to—send
(CTS) line, which instructs the RTU or PLC to delay further transmis-
sion until CTS again returns to the high state.
Host Computer—The computer installed at the master station site,
which controls the collection of data from one or more remote sites.
Latency—The delay (usually expressed in milliseconds) between when
data is applied to TXD (Pin 2) at one radio, until it appears at Rm
(Pin 3) at the other radio.
MAS—Multiple Address System. A radio system where a central
master station communicates with several remote stations for the pur-
pose of gathering telemetry data. Figure 4 on page 4 shows an example
of an MAS System.
MDS 05-3301AD1, Rev. A
MDS 9810/24810 Installation and Operation Guide 9
Master (Station)—The one radio transceiver in a spread spectrum net-
work that automatically provides synchronization information to one or
more associated remote transceivers. A radio may be programmed for
either master or remote mode using software commandst See Section
7.0, PROGRAMMING (beginning on page 35).
MCU~Microcontroller Unit. This is the processor responsible for con-
trolling system start-up, synthesizer loading, hop timing, and key-up
control.
Microcontroller Unit—See MCU.
Mode—This refers to the programmed function of an MDS spread spec—
trum radio—master or remote. (See also Remote Station and Master Sta-
firm.)
Multiple Address System (MAS)—See Point-Multipnint System.
Network Address—User-selectable number between 1 and 65000 that
is used to identify a group of transceivers that form a communications
network. The master and all remotes within a given system must have
the same network address.
Network-Wide Diagnostics—An advanced method of controlling and
interrogating MDS radios in a radio network.
Point-Multipoint System—A radio conununications network or
system designed with a central control station that exchanges data with
a number of remote locations equipped with terminal equipment.
Poll—-A request for data issued from the host computer (or master PLC)
to a remote radio.
PLC—Programmable Logic Controller. A dedicated microprocessor
conﬁgured for a speciﬁc application with discrete inputs and outputs. It
can serve as a host or as an RTU.
Programmable Logic Controller—See PIC.
Remote Radio —A radio in a spread spectrum network that communi-
cates with an associated master station. A radio may be programmed for
either master or remote mode using software commands. See Section
7.0, PROGRAMMING (beginning on page 35).
Remote Terminal Unit—See RTU.
RTU —Remote Terminal Unit. A data collection device installed at a
remote radio site.
SCADA— Supervisory Control And Data Acquisition. An overall term
for the functions commonly provided through an MAS radio system.
10
MDS 9810/245101nstallation and Operation Guide MDS 05-3301 A01, Rev. A
-2"en..“ '
Standing Wave Ratio— See SWR.
Supervisory Control And Data Acquisition—See SCADA.
SWR-Standing Wave Ratio. A parameter related to the ratio between
forward transmitter power and the reﬂected power from the antenna
system As a general guideline, reﬂected power should not exceed 10%
of the forward power (~ 2:1 SWR).
Zone~See Frequency Zone.
4.0 INSTALLATION PLANNING
The installation of the radio is not difﬁcult, but it does require some
planning to ensure station reliability and efﬁciency. This section pro-
vides tips for selecting an appropriate site, choosing an antenna system,
and reducing the chance of harmful interference.
4.1 General Requirements
Them are three main requirements for installing the radio—adequate
and stable primary power, a good antenna system, and the correct inter-
face between the transceiver and the data device.
Figure 10 shows a typical remote station arrangement. At a remote sta~
tion, a directional antenna is normally used, and a Remote Terminal Unit
(RTU) or other telemetry equipment replaces the host computer nor-
mally used in a master station.
H 515th TERMINAL
um?
ANTENNA sverM
REMOTE RADIO
row-Loss FEEDLINE
Figure 10. Typical remote station arrangement
MDS 05-3301A01, Rev. A MDS 9810124810 Installation and Operation Guide 11
12
MDS 9810/2481!) Installation and Operation Guide
4.2 Site Selection
For a successful installation, careful thought must be given to selecting
proper sites for the master and remote stations. Suitable sites should pro-
vide:
0 Protection from direct weather exposure
0 A source of adequate and stable primary power
' Suitable entrances for antenna, interface or other required
cabling
O Antenna location that provides an unobstructed transmission
path in the direction of the associated station(s)
These requirements can be quickly determined in most cases. A possible
exception is the last item—verifying that an unobstructed transmission
path exists. Radio signals travel primarily by line—ofAsight, and obstruc-
tions between the sending and receiving stations will affect system per—
formance. If you are not familiar with the effects of terrain and other
obstructions on radio transmission, the discussion below will provide
helpful background.
Terraln and Signal Strength
While the 900 MHz and 2.4 GHz bands offers many advantages over
VHF and UHF frequencies for data transmission, they are also more
prone to signal attenuation from obstructions such as terrain, foliage,
buildings, and other things in the transmission path.
A line-of-sight transmission path between the master station and its
associated remote site(s) is highly desirable and provides the most reli-
able communications link. A lineﬂf-sight path can oﬂen be achieved by
mounting the station antenna on a tower or other elevated structure that
raises it to a level sufﬁcient to clear surrounding terrain and other
obstructions.
The importance of a clear transmission path relates closely to the dis-
tance to be covered by the system. If the system is to cover only a limited
geographic area, say up to 3 miles (4.8 km) for the 9810, or 1 mile (1.6
km) for the 24810. then some obstructions in the transmission path can
usually be tolerated with minimal impact. For longer range systems, any
substantial obstruction in the transmission path could compromise the
performance of the system, or block transmission entirely.
Much depends on the minimum signal strength that can be tolerated in
a given system. Although the exact ﬁgure will differ from one system to
another, a Received Signal Strength Indication (RSSI) of —90 dBm or
stronger will provide acceptable performance in many systems. While
the equipment will work at lower signal strengths, this provides a “fade
MDS 053301A01, Rev. A
mm”:-
margin” to account for variations in signal strength which may occur
from time—to-time. RSSI can be measured with a Hand—Held Terminal
connected to the remote radio’s DIAG(NOSTICS) connector. (See Section
7.0, beginning on page 35.)
Conducting a Site Survey
If you are in doubt about the suitability of the radio sites in your system,
it is best to evaluate them before a permanent installation is begun. This
can be done with an on-the—air test (preferred method); or indirectly,
using path-study software.
An on-the-air test is preferred because it allows you to see fusthand the
factors involved at an installation site and to directly observe the quality
of system operation. Even if a computer path study was conducted ear-
lier, this test should be done to verify the predicted results.
The test can he performed by first installing a radio and antenna at the
proposed master station site and then visiting each remote site with a
transceiver and a handheld antenna. (An RTU simulator—MDS Part
No. 03-2512A01~can be connected to each radio in the network to sim-
ulate data during this test.)
With the hand-held antenna positioned near the proposed mounting
spot, a technician can check for synchronization with the master station
(shown by a lit SYNC lamp on the front panel) and measure the reported
RSSI value. If adequate signal strength cannot be obtained, it may be
necessary to mount the station antennas higher, use higher gain
antennas, or select a different site. To prepare the equipment for an
on»the—air test, follow the general installation procedures given in this
guide and become familiar with the operating instructions given in Sec-
tion 6.0, beginning on page 32.
If time is short, and a site survey is impractical, a computer path study
is a good alternative. Factors such as temin, distance, transmitter
power, receiver sensitivity, and other conditions are taken into account
to predict the performance of a proposed system. Contact MDS for more
information on path study services.
4.3 A Word About Radio Interference
The MDS 9810/24810 transceivers share frequency spectrums with
other services and other Part 15 (unlicensed) devices in the US. As such,
near 100% error free communications may not be achieved in a given
location, and some level of interference should be expected. However.
the radio’s ﬂexible design and hopping techniques should allow ade-
quate performance as long as care is taken in choosing station location,
conﬁguration of radio parameters and software/protocol techniques.
MDS 05-3301A01, Rev. A MDS 9810124810 Installation and Operation Guide 13
In general, keep the following points in mind when setting up your com-
munications network:
1. Systems installed in rural areas are least likely to encounter
interference; those in suburban and urban environments are more
likely to be affected by other devices operating in the license—free
frequency band and by adjacent licensed services.
2. If possible, use a directional antenna at remote sites. Although these
antennas may he more costly than omnidirectional types, they con-
ﬁne the transmission and reception pattern to a comparatively narA
row lobe, which minimizes interference to (and from) stations
located outside the pattern. (The use of a directional antenna may
not be possible in a simplex peer-to-peer network, where all remotes
are designed to communicate with one another.)
3. If interference is suspected from a nearby licensed system (such as a
paging transmitter, in the case of the 9810), it may be helpful to use
horizontal polarization of all antennas in the network. Because most
other services use vertical polarization in this band, an additional 20
dB of attenuation to interference can be achieved by using horizon-
tal polarization.
4. Multiple MDS 9810/24810 systems can co-exist in proximity to
each other with only very minor interference a: long as they are
each assigned a unique network address. Each network address has
a different hop pattern.
5. If constant interference is present in a particular frequency zone, it
may be necessary to “lock out” that zone from the radio‘s hopping
pattern. The radio includes built-in software to help users identify
and remove blocked frequency zones from its hopping pattern.
Refer to the discussion of ZONE DATA (page 52) and SKIP (page 50)
commands for more information.
6. If interference problems persist even after removing blocked zones,
try reducing the length of data streams. Groups of short data streams
have a better chance of getting through in the presence of interfer-
ence than do long streams.
7. The power output of all radios in a system should be set for the low-
est level necessary for reliable communications. This lessens the
chance of causing unnecessary interference to nearby systems.
~———.__——__
14 MDS 9810/24810 Installation and Operation Guide MDS 056301AD1, Rev. A
-ﬁ:“
4.4 Antenna & Feedllne Selection
Antennas
The equipment can be used with a number of antennas The exact style
used depends on the physical size and layout of a system. Contact your
MDS representative for speciﬁc recommendations on antenna types and
hardware sources.
In general, an omnidirectional antenna (Figure 12) is used at the master
station site in an MAS system. This provides equal coverage to all of the
remote sites.
NOTE: Antenna polarization is important. If the wrong polarization is
used, a signal reduction of 20 dB or more will result. Most
systems using a gain-type omnidirectional antenna at the
master station employ vertical polarization of the signal; there»
fore, the remote antenna(s) must also be vertically polarized
(elements oriented perpendicular to the horizon).
When required, horizontally polarized omnidirectional
antennas are also available. Contact your MDS representative
for details.
Figure 11. Omnldireetional antenna for MDS 9810 transeelver
MDS 05-3301AO1, Rev. A
MDS 9810/24810 Installation and Operation Guide 15
Figure 12. Omnidirectional antenna for
MDS 24810 transceiver (mounied to mast)
At remote sites and point-w-point systems, a directional Yagi
(Figure 13), radome-protected Yagi (for the MDS 24810) (Figure 14) or
dish-type (for the MDS 24810) (Figure 15) antenrm is generally recom-
mended to minimize interference to and from other users. Antennas are
available from a number of manufacturers.
Figure 13. Typical Yagi anienna (mounted to mast)
Figure 14. Radome—probecled Yagl antenna ior MDS 24310
“m
16 MDS 9131 0/24810 installation and Operation Guide MDS 05-3301A01, Rev. A
-M"
Flgure 15. Typical dlsh antenna for MDS 24810 transceiver
Feedlines
The choice of feedline used with the antenna should be carefully consid-
ered. Poopquality coaxial cables should be avoided. as they will
degrade system performance for both transmission and reception.
MDS 24am Since the radio operates at a nominal 24 01-12, the choice of feed-
transceiver line is important to maintain a balance of cost and performance. It is
recommended that only low-loss feedlines which have a foam
dielectric and a full shield are used.
MDS 98le For cable runs of less than 21) feet (6 meters), or for short range
transceiver transmission, an inexpensive type such as Type RGSA/U may be
acceptable. Otherwise, we recommend using a low—loss cable type
suitable for 900 MHz, such as Heliax'. Regardless of the cable
used, it should be kept as short as possible to minimize signal loss.
Table 2 and Table 3 list several types of feedlines and indicates the
signal losses (in dB) that result when using various lengths of each cable
at 900 MHz and 2.4 GHz. The choice of cable will depend on the
required length, cost considerations, and the amount of signal loss that
can be tolerated.
MDS 05-3301A01, Rev. A MDS 9810124810 lnslﬂllation and Operation Guide 17
—ﬁ..'7‘“"
Table 2. Length vs. loss In coaxlel cables at 900 MHz
10 Feet 50 Foal 100 Feet 500 Feet
Cable Type (3.05 Meters) (15.24 Meters) (30.40 Melers) (152.4 Meters)
FIG-EMU 0.85 dB 4.27 GB 854 dB 42.70 dB
1/2 inch HELIAX 0.23 C15 1.15 05 2.29 (15 11.45 dB
718 Inch HELIAX 0.13 dB 0.64 (18 1.20 dB 6.40 dB
1 1/4 Inch HELIAX 0.10 dB 0.48 113 0.95 dB 4.75 dB
1 5/8 inch HELIAX 0.08 05 0.40 dB 0.80 03 4.00 dB
Table 3. Flexible hardline losses at 2 GHz
10 F001 50 Feet 100 Font 500 Fm
Cable Type (3.05 Meters) (15.24 Meters) (30.40 Meters) (152.4 Meters)
3/8 Inch HELIAX 0.51 dB 2.55 dB 5.10 GB 255 dB
1/2 Inch HEIJAX 0.35 dB 1.73 dB 3.45 (13 17.3 GB
718 inch HELIAX 0.20 05 0.99 05 1.97 dB 9.85 dB
1 1/4 Inch HELIAX 0.15 dB 0.73 115 1.45 dB 7.50 dB
1 5/6 inch HELIAX 0.18 dB 0.63 dB 1.25 dB 6.25 dB
4.5 How Much Power Can I Run?
For non-point-to-multipoint and point-to-point systems, the transceiver
is supplied from the factory set for a +30 dBrn (1 Watt) RF power output
setting; this is the maximum transmitter output power allowed under
FCC rules. The power must be decreased from this level if the antenna
system gain exceeds 6 (Bi. The allowable level is dependent on the
antenna gain, feedline loss, and the transmitter output power setting.
Power considerations for point-to-multipoint and point-to-point systems
using the MDS 9810 and MDS 24810 transceivers are discussed in the
next sections.
For All MDS 9810 Systems
To determine the maximum allowable power setting of the radio, pro—
ceed as follows:
1. Determine the antenna system gain by subtracting the feedline loss
(in dB) from the antenna gain (in dBi). For example, if the antenna
gain is 9.5 dBi, and the feedline loss is 1.5 dB, the antenna system
gain would be 8 dB. (If the antenna system gain is 6 dB or less, no
power adjustment is required.)
2. Subtract the antenna system gain from 36 dBm (the maximum
allowable EIRP). The result indicates the maximum transmitter
power (in dBm) allowed under the rules. In the example above, this
is 28 dBm.
18 MDS 9810124810 Installation and Operalion Guide MDS 05-3301AD1, Rev. A
DEE an..." ' "
3. If the maximum transmitter power allowed is less than 30 dBm, use
the PWR command (described on page 48) to set the power accord—
ingly.
For convenience, Table 4 lists several antenna system gains and shows
the maximum allowable power setting of the radio. Note that a gain of 6
dB or less entitles you to operate the radio at full power output—30 dBm
(1 watt).
Table 4. Antenna system gain vs. power output setting
Antenna System Gain Maximum Power
(Amm- min In an sum.“ EIRP
mim- Foodiin- um In at) (In dBm) (In dam)
6 (or less) 30 33
8 EB 35
10 28 36
12 24 36
14 22 35
1s 20 as
* Most antenna manufacturers rate antenna gain in dBd in their
literature To convert to dBi, add 2.15 dB.
i Feedline loss varies by cable type and length. To determine the
loss for common lengths of feedline, see Table 3 on page 18
for the MDS 24810 transceiver and Table 2 on page 18 for the
MDS 9810 uansceiver.
For MAS Point-to-Multipoint Systems (MDS 24810)
For point—to-multipoim systems, the FCC limits the EIRP (Effective Iso»
tropic Radiated Power) to +36 dBm. Accordingly, if an antenna is used
with a 8 dBi gain rating, the transmitter power needs to be set no higher
than +28 dBm (640 milliwatts).
Generally, it is better to reduce the transmit power and use larger,
higher-gain dish antennas (Figure 15). Using higher~gain antennas
instead of increasing transmitter power gives a higher system gain and
reduces the susceptibility to interference due to the narrower beam
width of the higher gain antenna
MDS 05—3301 A01, Rev A MDS 9810/24810 Installation and Operatlon Guide 19
mm mm
ulm mm
Table 5 lists several antenna system gains and shows the maximum
allowable power setting of the radio.
Table 5. Antenna system gain vs. power output setting
In polnt-to-multipoint systems
Antenna System Gain Maximum Pomr
(Anni-n Glln In “F Setting EIRP
mlnu: Fndllnn Lou In at) (In am) (m an)
6 (or less) 80 36
8 28 36
10 25 as
12 24 as
14 22 36
1s 20 as
1 8 1 B 36
20 15 as
22 14 36
24 12 as
26 10 as
* Most antenna manufacturers rate antenna gain in dBd in their
literature. To convert to dBi, add 2.15 dB.
1“ Feedline loss varies by cable type and length. To determine the
loss for common lengths of feedline, see Table 3 on page 18.
For Point-to-Point Systems (MDS 24810)
In point-to—point systems operating in the 2.4 GHz band, the FCC
restricts the transmit power to +30 dBm (1 watt) with an antenna rated
at 6 dBi gain. However. the FCC allows an increase in antenna gain with
a trade—off of transmit power 3 to 1.
For example, an antenna rated for 12 dBi gain can be used with a
transmit power of 28 dBm. In this case, +36 dBi EIRP is exceeded by 4
dB. Table 6 lists the allowable transmit power with allowable antenna
gainl
Table 5. Antenna system gain vs. power output setting
In polnt-to-polnt systems
Antenna System Glln Maximum Allowable
(Mun-u Gill" "I C” Power Setting EIRP
mlnlu mun. Lo- In 11:1) an am) ("1 dim)
6 (or less) 30 Less than 36
s 28 as
10 29 39
12 28 40
20 MDS 9810/2481!) installation and Operation Guide MDS 05-3301A01, Rev. A
Table 6. Antenna sysmm gain vs. power output seﬂlng
In polnl-lo-poim systems
Anlennn Symm Gnln Maxlmum Allowable
(Am-mu Gnln ln a» Power Scnlng EIRP
mlnul Fudh- Lou In an) (m mm) (In sum)
14 28 42
16 27 43
1 8 26 44
20 26 46
22 25 47
24 24 48
26 24 50
28 23 51
80 22 52
32 22 54
34 21 55
36 20 56
38 20 58
40 19 59
42 1B 60
“RM
46 1 7 63
48 16 64
50 1 6 GS
MDS 9810124810 Installation and Operation Guide
MDS 05-3301A01, Rev. A
21
-%'2“
5.0 INSTALLATION
Figure 16 shows a typical transceiver product shipment, along with an
optional Hand-Held Terminal (HI-IT), Check the contents against the
packing list secured to the outside of the shipping box. Accessories and
spare pans kits, if any, are wrapped separately. Inspect all items for
signs of damage and save all packing materials for possible re-shipment.
INSTALLATION a
OPERATION ﬂuvDE
Figure 16. Typical Transceiver shipment
Below are the basic steps for installing the MDS 9810/24810 trans—
ceivers. In most cases, these steps alone will be sufﬁcient to complete
the installation. Should further infonnation be required, contact Micro—
wave Data Systems at the number given on the inside back cover of this
manual.
If you are installing a peer-to-peer, tail~end link or repeater system, you
should also review Sections 5.2 (page 26) and 5.3 (page 29) for impor-
tant details on antennas, cabling and software settings.
NOTE: It is recommended that the master station be installed ﬁrst. In
this way, it will be possible to quickly check the operation of
each associated remote station as it is placed on the air.
22 MDS 9810/24810 Installation and Operation Guide MDS 05-3301AD1. Rev. A
mum mtg-um
Minna-fl I“
5.1 Transceiver Installation
1. Mount the transceiver to a stable surface using the brackets supplied
with the radio. (Fasteners/anchors are not supplied.)
Figure 17 shows the dimensions of the transceiver case and its
mounting bracket. If possible, choose a mounting location that
provides easy access to the connectors on the end of the radio and an
'— unobstructed view of the LED status indicators.
NOTE: The screws holding the brackets to the radio are Via inch (8
" mm) long so as not no damage the radio’s PC board when tight-
ened. If, for any reason, these screws are replaced, the new
screws must not exceed this length.
Figure 17. Transceiver mounting dimensions
2. Install the antenna and antenna feedline for the station. Antennas
should be mounted in the clear and in accordance with the manufac-
turer’s instructions.
Additional information on antennas and feedlines is contained in
Section 4.4 (page 15).
— MDS 05-3301A01, Fiev. A MDS 9810/24810 Installailon and Operation Guide 23
-'='£~;.=2'.‘“
NOTE: Strong ﬁelds near the antenna can interfere with the operation
of the low level RTU circuits and change the reported values
of the data being monitored. For this reason, the antenna
should be mounted at least 10 feet (>3 meters) from the radio,
RTU, sensors and other components of the system.
3. Connect the data equipment to the Iransceiver’s DATA INTERFACE
connector. Use only the required pins for the application—Do not
use a fully pinned (25 conductor) cable. Typical applications require
the use of Pin 2 (transmit data—TXD), Pin 3 (received datafRXD)
and Pin 7 (signal ground). Figure 18 shows a detailed view of the
DATA INTERFACE connector.
lf hardware ﬂow control is desired, Pin 4 (request to sendeTS)
and Pin 5 (Clear-to-Send—CTS) are also required. A complete list
of pin functions is provided in Table 16 on page 64.
m an Pin w-
W nu. m, nun-mm.
rs uni-an
“mag 22 re Gnommrsuw)
on,“ EM, 1 mined
“Wu" um“; g m ammonium-a Sensor
nssrvm- 21 ' ”M
Frmnbuo»bnmnmmeot m 5 Din-cm rim-moon)
uvumguumwwr 19 7 ﬂﬁm‘wn
unnumncirwvwwr 1! 5 W‘ “l
s ”mammal
3:22: 1; A Roqu-t-to-S'rdlrvmlm's)
w,” m a Mon-(m
Um“, w z Yrm-rllt‘dlhhlnm’
r armament-m1
-mrlnarnm-trm
Figure 18. Transoelvor Interface connector pins
As viewed from outside the radio
NOTE: The data cabling between the transceiver and the connected
device should be kept as short as possible. Cable runs over 50
feet (15 meters) may require the use of EIA—422 signaling.
Consult MDS for details.
4. Measure and install the primary power for the transceiver. It must be
Within 10.5—25 V do and be capable of furnishing up to 500 (MDS
9810) or 750 (MDS 24810) milliamperes. Be sure to observe proper
polarity. The red wire on the power cable is the positive lead; the
black is negative.
NOTE: The radio is designed for use only in negative ground systems.
The power supply used with the transceiver should be equipped
with overload protection (NEC Class 2 rating), to protect against a
short circuit between its output terminals and the transceiver power
connector.
______—_____———————
24 MDS 9510124810 Installation and Operation Guide
MDS 05-3301A01, Rev. A
—eez“
5. Set the radio’s conﬁguration using a Hand—Held Temiinal (HHT).
Review Section 7.0, PROGRAMMING (beginning on page 35), if
you are unfamiliar with connecting and using the HHT.
The three essential settings for MDS 9810/24810 transceivers are:
Mode —Master or Remote
Network Address—a unique number from 1—65000
Data Interface Parameters—bps, data bits, parity, stop bits
3. Connect an HHT to the DIAG(NOSTICS) connector (see
Figure 19). After the HHT beeps, press to display the
ready ‘>" prompt.
b. Set the Mode—Determine whether the transceiver will be used
as a master or remote, and program it accordineg using the
MODE_M or MODEJ command (page 47). (MODEJ‘ = Master,
monein = Remote.) Press [ENTER . The HHT will display PHO~
GHAMMED 0K.
NOTE: All transceivers are normally shipped from the factory
tare-conﬁgured as remotes.
Figure 19. HHT connected to transceiver
c. Program the network address—Type ADDR (page 41) followed
by , m, and then the desired address number
(145000). Press -. All radios in a given system must be
programmEd with the same network address. After programming
the address, PROGRAMMED OK will be displayed.
M“
MDS 05-3301A01, Rev. A MDS 9810124810 Inshliailon and Operation Guide 25
NOTE: It is strongly recommended that the last four digits of the
master radio’s serial number be used as the network address.
In this way, it is unlikely that two systems will have the same
address.
d. Set the data interface parameters to match the connected data
device—The default setting is 4800 baud, 8 data hits, no parity,
1 stop bit. If your data equipment requires a different setting. use
the mo xxxxx abc command (page 42), where xxxxx equals the
baud rate (1200, 2400, 4800, 9600, 19200, or 38400 bps) and she
indicates the control hits as follows:
a = Data bits (7 or 8)
b = Parity (N for None, 0 for Odd, E for Even)
e = Stop bits (1 or 2)
Using this scheme, a sample entry for the BAUD xxxxx lbc com-
mand would look like this: BAUD «on am (A similar example
using a ﬁve-character baud rate would appear as follows: BAUD
19m BN1)
Press . After setting the data parameters, PROGRAMME!)
0K will be displayed.
NOTE: 7N1, 802, and 8132 are invalid communication settings and are
not supported by the transceiver.
e. Record the Mode, Network Address, and Baud Rate settings on
a label and afﬁx it to the transceiver cover.
6. Repeat the above steps for each transceiver in the network.
This completes the basic installation of the MDS 9810/24810 trans-
ceiver. Section 6.1, Initial Start-up (beginning on page 32), contains
steps for evaluating radio performance.
5.2 Peer-to-Peer Systems
Peer-to-peer systems allow remote radios to communicate with each
other as well as with the central master station. The paragraphs below
describe two types of peer-to—peer systems—simplex and repeater
assisted.
26 MDS 9810/24810 Installation and Oparatlon Guide MDS 05-3301A01. Rev. A
Programming
Antennas
Collision Avoidance
-ﬁ.’""
Simplex Peer-to-Peer
A simplex peer—to-peer system is one in which all radios use the same
transmit and receive frequencies. This is sometimes known as
single-frequency operation. A simplex arrangement is the simplest con-
ﬁguration for peer-tO—peer systems, although it usually has limited trans-
mission range because of the need for all stations to use omnidirectional
antennas. (If range is a concern, see “Peer-to-Peer with Repeater Assis-
tance” on page 27.)
With a simplex pecr-to—peer system. there are three key items to
remember:
To program a system for simplex operation, the master radio must
be set to SIMPLEx ON (page 50). This setting is automatically applied
to all remote radios as soon as they become synchronized with the
master radio.
Omnidirectional antennas are normally required at all stations in a
simplex system. The transmission range may be signiﬁcantly
, reduced as compared with stations using directional antennas, so it
is especially important that sites be chosen to allow sufficient signal
strength between all units. A discussion of site selection is provided
in Section 4.2.
One problem with peer-to-peer systems is the risk of data “colli-
sions" that can occur through self-interference This problem can be
alleviated with data protocols (such as Harris DNPS) which use
Cam'er Sense Multiple Access (CSMA) to detect a busy channel. In
these systems, Pin 10 (Receiver Unsquelched—RUS) on the trans»
ceiver should be connected to the RTU’s Data Carrier Detect
(DCD) pin.
Peer-to-Peer with Repeater Assistance
A shortcoming of a simplex peer-to—peer network is that communication
range is often reduced because of the need for all stations to use omni-
directional antennas. An alternative peer-to—peer network can be estab-
lished using a repeater station to ire-transmit the signals of all stations in
the network. (See Figure 20.) Because directional antennas (aimed at the
repeater site) can be used at all remote sites, the communication range
of the system is greatly increased. Like a simplex peer—to—peer system,
each remote station can “ car” the transmissions of the others so that
data collisions can be avoided.
MDS 05-3301 A01 , He'll. A
MDS 9810124810 Installation and Operation Guide 27
Flgure 20. Peer-to-peer network with repeater assistance
Here are some speciﬁc requirements for peer—to—peer systems with
repeater assistance:
Repeater Setup The repeater station in a peer-to peer network consists of two
ova-located transceivers—one programmed as a remote using master
frequencies (MODE R-M command, page 47), and the other pro-
grammed as a master (MODE Ill command).
Interface Wiring Pin 2 (TXD) of the master radio must be connected to Pin 3 (RXD)
of the other radio (the one programmed as MODE R-M) using a local
interface cable. This allows the signals received by the MODE R-M
radio to be re—transmitted by the master. The signal ground leads
(Pin 7) must also be connected to each other.
Remote Master
(Mode R-M)
Figure 21. Data Interface cable wiring
for peer-to-peer systems with repeater assistance
Antennas ’I\-vo omnidirectional antennas are required at peer-to-peer repeater
stations—one for each radiot It is important to minimize coupling
between these antennas. The necessary isolation can be achieved by
vertical separation. In this arrangement, one antenna is mounted
directly over the other, separated by at least 4 feet (1.22 Meters).
This takes advantage of the minimal radiation exhibited by verti—
cally polarized antennas directly above and below one another.
28 MDS 9810124810 Installation and Operation Gulde MDS 05-3301AD1, Rev. A
Full-Duplex
Conﬁguration
Interface Wiring
Programming
The paragraphs above discuss the requirements for a basic Repeater
Assisted Peer-to—Peer system. If a full—duplex system is required
(with the SCADA host computer located at the repeater), additional
considerations apply. If you are constructing this type of system,
contact Microwave Data Systems and request a copy of Application
Bulletin 97002. Bulletins are also available on our BBS line at
(716) 242-8426. The parameters of operation are 8 data bits, no par-
ity and 1 stop bit (8-N—1). The BBS supports modem speeds from
300 to 14.4 kbps. The MDS World Wide Web site. www.micro-
wavedata.com, also contains this information.
5.3 Tail-End Links
A tail-end link is established by connecting an MDS 9810/24810 radio
“back-to-back” with another radio such as a licensed MDS 2300/4300
series transceiver. This can be used to link an outlying remote site into
the rest of an MAS network. Here are some speciﬁc requirements for
tail-end link systems:
The connection between the two radios in a tail-end link system
must be made as shown in Figure 22.
5 E;
“w s=
g ii
88
Figure 22. Data Interface cable wiring ior tall-end links
In a tail-end link system, the radio’s device behavior must be set to
DEVICE crs KEV (page 44) using the HHT. This allows one radio to
control the keying of another. Also, the CTS delay time must be set
(using the ms nu: command, page 43) to the time required for the
other transceiver to key up. This time is typically 10 ms for MDS
2300/4300 series transceivers.
MDS 05-3301A01, Rev. A
MDS 9810124810 Installation and Operation Guide 29
mm?"
Antennas
System Addresses
Interface Wiring
5.4 Repeaters
Two MDS 9810/24810 radios (or another MDS spread spectrum radio)
may be connected “back-to-back” using a null-modem cable to form a
repeater station. This is sometimes required in a network that includes a
distant remote station that would otherwise be unable to communicate
with the master station due to distance or terrain.
A repeater works by re-transmitting data from the outlying remote site
to the master station and vice versa. It introduces a small amount of
end-to-end transmission delay, but this is not a problem in most systems.
The geographic location of a repeater station is especially important. A
site must be chosen that allows good communication with both the
master and the outlying remote site. This is often on top of a hill, or other
elevated terrain from which both sites can be “seen“ by the repeater sta-
tion antennas. A detailed discussion on the effects of terrain is given in
Section 4.2, Site Selection (beginning on page 12).
Here are some speciﬁc requirements for repeater systems:
TWo antennas are required at repeater stations —one for each radio.
Measures must be taken to minimize the chance of interference
between these antennas. One effective technique for limiting inter-
ference is to employ vertical separation. In this arrangement, one
antenna is mounted directly over the other, separated by at least 4
feet (1.22 Meters). This takes advantage of the minimal radiation
exhibited by most antennas directly above and below their driven
elements.
Another interference reduction technique is to cross-polarize the
repeater antennas. If one antenna is mounted in the vertical plane,
and the other in the horizontal plane, an additional 20 dB of attenu-
ation can be achieved. (Remember that the corresponding stations
must use the same antenna orientation when cross-polarization is
used.)
The two radios that are wired together at the repeater site must have
different system addresses. To set or view the system address, see
“ADDR [1...65000]” on page 41.
A null—modem cable (Figure 23) is required between the DATA
INTERFACE connectors of the two radios forming a repeater station.
This allows them to freely exchange data even though they are both
conﬁgured as DCE devices.
30 MDS 9810124810 Installation and Operation Guide MDS 05-3301A01, Rev. A
Spread Spectrum
Remote
Spread Spectrum
Mas‘lor
(DOE)
Figure 23. Data Interface cable wiring for null-modem cable
(used for repeater)
5.5 Using the Radio’s Sleep Mode
In some installations, such as at solar-powered sites, it may be necessary
to keep the transceiver’s power consumption to an absolute minimum.
This can be accomplished using Sleep Mode. In this mode, power con-
sumption is reduced to less than 30 milliamperes.
Sleep Mode can be enabled under RTU control by asset-tings ground (or
ElA-232 low) on Pin 12 of the radio’s DATA INTERFACE connector. The
radio stays in Sleep Mode until the low is removed, and all normal func-
tions are suspended. As a status indication, the radio’s PWFl LED ﬂashes
once every four seconds to indicate that it is in Sleep Mode.
The radio can be “woken up" by your RTU every minute or so to verify
synchronization with the master station. When Pin 12 is opened (or an
BIA—232 high is asserted), the radio will be ready to receive data within
75 milliseconds.
It is important to note that power consumption will increase signiﬁ—
cantly as communication from the master station degrades. This is
because the radio will spend a greater period of time "awake,” looking
for synchronization messages from the master radio.
System Example
This example describes Sleep Mode implementation in a typical system.
Using this information, you should be able to conﬁgure a system that
will meet your own particular needs.
Suppose you need communications to each remote site only once
per hour. Program the RTU to raise an BIA-232 line once each hour
(DTR for example) and wait for a poll and response before lower»
ing it again. Connect this line to Pin 12 of the radio‘s DATA INTER-
FACE connector. This will allow each R'I'U to be polled once per
hour, with a signiﬁcant savings in power consumption.
MDS 05-3301Am, Rev. A MDS 9810124610 Installation and Operation Guide 31
mm“
6.0 OPERATION
6.1 Initial Start-up
In-service operation of the MDS 9810/24810 transceiver is completely
automatic. Once the unit has been properly installed and conﬁgured,
operator actions are limited to observing the LED status indicators for
proper operation.
If all parameters are correctly set, operation of the radio can be started
by following these steps:
1. Apply primary power to the radio.
2. Observe the transceiver LED status panel (Figure 24) for the proper
indications. Table 7 provides a complete explanation of the LED
functions.
In a normally operating system, the following LED indications will
be seen within 16 seconds of stamup:
t PWR lamp lit continuously
- SYNC lamp lit continuously
- Remote radjo(s) transmitting data (TXD) and receiving data
(FIXD) with the master station
M "ND not HXD
Figure 24. LED status indicators
Table 7. LED status Indlcators
LED Name Description
PWH - Continuous—Power is applied to the radio: no problems detected.
- Flashing 5 limes per second—Fault Indication.
See Section 8.0. TROUBLESHOOTING (beginning on page 54).
- Hashing once every 4 seconds—radio is in SIeep mode.
SYNC Lights continuously to Indicate the radio Is receiving/sending
synchronization frames. Within 16 seconds of power-up, this LED
should be Iil continuously
TXD Indicates EIA—282 space (logic high) signal Input to the DEE
connector.
HXD Indicates EIA-232 space (logic high) signal mnput train the DB~25
connector.
.——————_
32 MDS 9810124810 Installation and Operation Guide MDS 05-3301AD1, Rev. A
alumna mm
6.2 Performance Optimizatlon
After the basic operation of the radio has been checked, you may wish
to optimize its performance using some of the suggestions given here.
The effectiveness of these techniques will vary with the design of your
system and the format of the data being sent.
Complete instructions for using the software commands referenced
herein are provided in Section 7.0, PROGRAMMING (beginning on
page 35).
Antenna Aiming
For optimum performance of directional antennas, they must be accu-
rately aimed in the direction of desired transmission. The easiest way to
do this is to point the antenna in the approximate direction, then use the
remote radio‘s built-in Received Signal Strength Indication (RSSI) fea-
ture to further refine the heading for maximum received signal strength.
RSSI can be read by connecting an HHT to the remote radio‘s RJ—ll
DIAG(NOSTICS) jack and entering the asst command. Instructions on
connecting and using an HHT are given in Section 7.0, PROGRAM-
MING (beginning on page 35).
In an MAS system, RSSI readings are only meaningful when initiated
from a remote station. This is because the master station typically
receives signals from several remote sites, and the RSSI would be con-
tinually changing as the master receives from each remote in turn.
Antenna SWR Check
It is necessary to brieﬂy key the transmitter for this check by placing the
radio in the SErUP mode (page 49) and using the KEV command on the
I-IHT. (To unkey the radio, enter DKEY; to disable the setup mode and
return the radio to normal operation, enter 0 or ourr.)
MDS 9310 The SWR of the antenna system should be checked before the radio
"M’W'W' is put into regular service. For accurate readings, a wattmeter suited
for 1000 MHz is required. One unit meeting this criteria is the Bird
Model 43" directional wattmeter with an 800-1 element installed.
The reﬂected power should be less than 10% of the forward power
(-2:1 SWR) Higher readings usually indicate problems with the
antenna, feedline or coaxial connectors.
MDS 2481 D The antenna system should be checked before the radio is placed
transoelvar into regular service. Ensure the feedline and its connectors are in
good condition and are correctly installed to a suitable 2.4 to 2.5
GHz band antenna. Ensure the polarization of the antenna matches
the polarization of the antenna at the other end of the link. For a
more accurate determination of the antenna system condition, an
MDS 05-3301AO1, Rev. A MDS 9810124810 Installation and Operation Gulde 33
gt
accurate iii-line wattmeter installed between the feedline and the
antenna can be used to check forward and reﬂected power. A Bird
type 43 wattmeter equipped with a 431-20 (1 watt) slug is suitable
for this purpose.
The forward power measured at the antenna with the in-line watt-
meter should read the difference between the MDS 24810 power
setting (PWR, page 48) and the feedline loss. The reﬂected power
measured determines the amount of antenna/feedline mismatch at
this point. If excessive reﬂected power is measured at this point,
check the antenna and its connections. If the measured forward
power is much less than expected, check the feedline, its connec-
tors, and the output power setting of the MDS 24810.
Data Butter Setting
The default setting for the data buffer is ON to accommodate virtually
any data format. However, if the system can operate satisfactorily with
the buffer OFF, we recommend doing so using the BUFF OFF command
(page 42). This allows the radio to operate with the lowest possible
latency and improves channel efﬁciency.
Hoptime Setting
The default hop time setting is HOP'HME NORMAL. If message sizes typi-
cally exceed 256 bytes, channel efﬁciency can be improved by setting
this parameter to HOPTIIIE LONG.
A detailed explarmtion of the HoPTIME command, and a table listing the
available selections and the channel efﬁciency associated with each, can
be found on page 45.
Baud Rate Setting
The default baud rate setting is 4800 bps to accommodate most systems.
If your system will support a higher data rate, you should increase the
radio’s transmission speed using the BAUD xxm nbc command (page
42). It should be set to the highest speed that can be sent by the data
equipment in the system. (The transceiver supports speeds from 1200 to
38400 bps)
Radio Interference Checks
The zONE DATA command (page 52) can be used to check for interference
in the radio’s eight frequency zones. If interference is found in one or
more of these zones, the SKIP command (page 50) can be used to omit
them from the hop pattern. You should also review Section 4.3, A Word
About Radio Interference (beginning on page 13), when dealing with
interference problems.
34 MDS 9810124810 Installation and Operation Guide MDS 05—3301 A01, Rev. A
-ﬁ2’”
7.0 PROGRAMMING
There are no manual controls or adjustments on the MDS 9810/24810
radio. Programming and control is performed remotely, using InSite 5
Radio System Management Software (MDS P/N 03-3475A01), or on
site, using an MDS Hand-Held Terminal (MDS PIN 02-1501A01). Con-
tact MDS for ordering information.
_ 7.1 Hand-Held Terminal Connection & Start-up
This section gives basic information for connecting and using the MDS
Hand~Held Terminal for control of the radio. For more information
about the terminal, see the instructions supplied with each HHT kit.
The steps below assume that the HHT has been conﬁgured for use with
k the MDS 9810/24810 Transceiver (80 character screen display). If the
HHT was previously used with a different model transceiver, or if its
default settings have been changed, refer to Section 7.2 for setup details.
Follow these steps to connect the HHT:
- 1. Connect the HHT’s coiled cord to the DIAG(NOSTICS} (RJ-l 1) jack
on the radio as shown in Figure 25. This automatically places the
radio into the control and programming mode.
As an alternative, the DATA INTERFACE (DB-25) connector may be
used for programming instead of the DIAGNOSTICS) jack. With this
_ arrangement, Pin 23 of the HHT cable must be grounded to enable
the diagnostic channel. (See Table 16 on page 64.)
Figure 25. Hand-Held Terminal connected to the MDS 9810124810
—— MDS 05-3301 A01, Flev. A MDS 9810/24810 Installation and Operation Guide 35
if
i?
35}
2. When the HHT is connected, it runs through a brief self-check, end-
ing with a beep. After the beep, press ENTER to receive the ready
“>” prompt.
7.2 Hand-Held Terminal Setup
The following is a set of instructions for re-initializing an HHT for use
with the MDS 9810/24810. These steps may be required if the l-H-IT was
previously used with a different radio, or if the HHT default settings
have been inadvertently altered.
1. Plug the HHT into the DIAG(NOSTICS) connector. Enable the setup
mode by pressing the sulFr , and -keys in sequence.
The display shown in Figure 26 will appear.
Re-Inl‘t HT nu
ROLL EXIT NEXT
Figure 26. HHT setup display
2. The ﬁrst of 15 menu items will be displayed. Settings can be
reviewed by pressing the NEXT function (IEI key). Parameter set-
tings can be changed by pressing the ROLL function A key).
3. Set up the HHT as listed in Table 8.
Table 5. HHT Operational settings
Purim-hr Sttiing Fur-mater Setting
Ra-inii HT NO Scroll On 33rd
Baud Hale: 1200 Cursor ON
Comm hits= 8,1." CRLF ior CR OFF
Parity Error OFF Sail Test SLOW
Key Repeat OFF Key Beep ON
Echo OFF Screen Size so
Shift Keys YES Menu Mode LONG
Ctl Chars PROCS
M—
36 MDS 9810124810 Installaiion and Operation Guide MDS 05-3301A01. Rev. A
-ﬁEZ':"
4. Exit the HHT setup mode by pressing |§| for Exit, or by pressing the
E (Roll) key after the ﬁnal menu item has been reviewed.
7.3 Keyboard Commands
Table 9 is a reference chart of software commands for the transceiver.
See Section 7.4 for detailed command descriptions.
Entering Commands
The proper procedure for entering commands is to type the command,
followed by an ENTER keystroke. For programming conunands, the
command is followed by SPACE and the appropriate information or
values, then m .
Here are some additional points to remember when using the HHT:
Use the Eﬁ key to access numbers; press again to return let—
ters.
Flashing square cursor (.) = letter mode.
Flashing superscript rectangular cursor (=) = number mode.
Use key to edit informaﬂon or commands being typed
in.
Error Messages
Below are some common HHT error messages you may encounter:
UNKNOWN COMMAND —Command was not recognized.
INCORRECT ENTRV— Command format or its arguments invalid.
COMMAND FAILED—Command was unable to complete success-
fully. Possible software problem.
No-r Pnoomuuso— Software was unable to program the
EEPROM or the requested display item was not programmed.
TEXT'IOO LONG—Response to OWN or OWM command when too
many characters have been entered.
NOT AVAILABLE—The entered command or parameter was valid,
but it referred to a currently unavailable choice.
Passwono INVALID—The entered password was invalid, and
was not accepted.
ACCESS DENIED —Comrnand is invalid for current password
level.
EEPROM FAILURE—The INIT command cannot write to
EEPROM.
—_*__—_—_—
MDS 05-3301AD1, Rev. A
MDS 981024810 Installation and Operation Guide 37
—m"
Table 9. Command summary
COMMAND DESCRIPTION
BUFF um, am on : Sunless can, OFF = Fem byte Ihrouuhpm.
Dams Pay: 42
HDP11|IE muonskom: Sawmrnptime—xsnom. snout NORMAL.
mmwm: LmG
Details Page 45
slumzoucm Program umpi-xm-n-mpmx “mum
Details Page 50 ON I Sim, OFF = hdl-(hwn
SKIP [NONELJ] Sweet wmblnuﬁon unrequmy opmung mm to
Dmih Plot 50 mid.
anx [ml] Sat but me a! diagnostlcs llnk
Dmils Page 44
mm: 5m mam opemﬂnnal cmmmmmlcs m net-
mowmmrmsm work-m dimsﬁcs
Details Pugs 45
38 MDS 9810124810 Insmllalion and Operation Guide MDS 05-3301AD1, Rev. A
mum
Table 9. command summary (Continued)
COMMAND DESCRIPTION
ADD“ Hum Progr-n mom Edd!!-
Denis Plan 41
AMMK [DOW m—Fﬁ $915 alarm mamas. Dduull IE FFFF FFFE
FFFFJ
Datavls Page 41
ABENSE [PI/Lo] CW ma sens n! the slum 0mm”, BMW" is
Dmim P-qa 42 HI,
“(MIMI Sammmmmmﬁm parametan
omn- Paau 42
c‘rs [0-255] Progum crs may in milhseeonds.
Delaih Pugs“ (A value 1.10 o remrnl cTs immadamy)
moi-D m Sammy “Md ﬂmu’ m (71's Vanni"; venom
Mil! Figs ‘3 blllﬂl‘mg last mm”! lunemvu‘on from D025
pen.
DEVICEI'DCEJTTSKEY] 501W?“ DOMHJCE (mrmlf) 01 C15 m
DEB“! Pm 44 (Hammer)
|N|T Inm-Iiz. “VIM in default Vﬂluﬁ
Dem?“ Pme 45
MODE m. H. M] Ping-m npeming mode. Wham M = Mamet.
Dmila PQB ‘7 H = Rom, H—M = Remus-Mm momma min
' prugrunmad to opemo an Mum mamas)
own pun] Frog-m own-rs message
Damn 9.45 a 4m chart-ﬂew mama.)
’ own Dunn] ngrlm amen mm-
v Mil! P196 47 (30 Meter: mulmum)
PWR [xx-am mgr-m bmra power unlpul m dEm.
Dmik Pin. 40
RTUIIJNIOFFM] Resumes or dillbh! m lldlo'! Imamsl RTU svm'
Dull: Fm“ “WWImﬂ’BRTUMML
mmDNEJl-I‘W] Wm max. (”Mum a: wait Mull Hui-g a
' D611”! qu 49 “mm alum. Mull ‘6 OFF.
uurr n coo-em; ngllm unn lddmss
Bah"! Fug 52 (Fwﬁm application.)
ZONE DATA 51mm am Militias. Press ‘Q’Iu Hill
Dem Page 52
1”? CLEAR ﬁst! mm dab mm:
“H
MDS 9810124810 Installation and Operation Guide
MDS 05-3301A01, Rev. A
39
unam-
mu-
Table 9. Command summary (Cominued)
COMMAND DESCRlPTlON
Nmk “his (Pam)
ALA” Obsawm command—ass WT
mun [noon WFFF sum nllnn rupmlse. Dem-m u FFFF FFFF.
FFH
Dmﬂs Page 41
Assuss [HIILO] Chang's ma sense 04 m mm uumuL Def-nu l:
m Page 42 P“.
Mum-nu she] mum-y can. mmmuninntion par-"mars
, Delalls Pay. 42
RUFF I'D", “Fl DIM mmvlng MOB: ON = snmloss dula
DEN”! Pg! 02 OFF l hi hm mmwhpm
015 (”551 C75 ﬁlm In "I (“m HS)
Dams Page 43
Dump Show an mumm- semngs. lnunded m use
Wiﬂl A PC and MDS Rania Configuration ”MFG
(PIN wmseAn‘).
nswczmczcrsxsn Device behavior (DCE, or crs KEY)
Demili PM! 44 J
HDPTIIIIE “monument, snow mm mm
mum. LONG]
Denna Pla- 45
"REV Hardwar- minim |BVB|
“summit-u] Show emf-g M|:M=Mmtev. amp-mu,
DOWNS FmB ‘7 M7“ = HOMEMBDI‘
(mu Owners mugs mm; mm
mm mm ham or mm r-me
FWH [xx-av] Fwwud pour nulpm ssllvng In dam
Dehils Pm! 48
um Rsneived s’gml mm. m usm mammary
Details Pg; ‘6 Mn“) NM uvaulab‘a ll numrndin Until SETUP
» is melted. Ammo wings are not Named to:
I‘ﬂnﬁl Imm'hs gm!“ min {a dam.
ammonia-um] Spsﬁilos nmwmu mm m wan before issulng a _'
Dmils Pass 49 mm llum. Deﬁant! is NONE.
SEN Serial mm! D" man
Slim/mm,“ SHIN ma m". DC voltage, 01 mensurud RF
Bowls Page,“ wurmBm)
SIIIPLEX (on. om smmml-aupm selection
Dalila Plan 50 ON 1 SM WP - "BHWNOX
SKIPINUNEIM'] SWaMusma/ spouting mm
Dav-u- Pag- su
. sun signal-who min
Details Fla. 5‘
_.
, snsv Displny mnscomrﬁmmam mluon Iml
ST“ 04mm “I'm shill
DOE“! Pm 51
TEMP Trunaeehml’s Inlamal lampemuro re)
Details qul 52
Wﬂ'l‘m-m] Slum DWIMM um! MM! “NO-65m)
Details Pugs 52
ZWE “TA SHW {BIB dﬂh MM“. FEE ﬂ'm mill.
0mm Pays 52
40
M08 9810/2481!) Insmllaﬂon and Operation G
MDS 05-3301AO1, Hm]. A
DESCRIPTION
Emu-s me transmitter.
(Radio must be h Slurp mode.)
Dklbhs the transmitter.
(ﬁldlo mm be In Setup lime.)
DH”? [XI] 'dllﬂn;ﬂ~jtlzol'50; I'm ammmtime W WI" m’
D l P 44 [B l lraeier m l lemrﬂi
am; we mummy-"Mammary“;
We
Sammy mum lrequenoy.
Details Page 52 (Redo Mi! be in Setup mode.)
Rx [Kill] mﬂlmlly S‘uﬂ "no: receive VMHEMY-
Details Page 49 {mic "ll“ M in SEND NINE.)
SETUP Eﬂm Setup MATH“! MI W 15 mmmas
Donn: Page 49 Plus: “a'io quil.
7.4 Detailed Command Deserlptions
The only essential commands for most applications are Network
Address (Anon), Mode, (MODE) and Baud Rate (nun). However,
proper use of the additional commands allows you to tailor the trans»
ceiver for a speciﬁc use, or conduct basic diagnostics on the radio. This
section gives more detailed information for numy of the user commands
listed in Table 9.
In many cases, the commands below can be used in two ways, First, you
can type only the command name (for example, ADDR) to view the cur-
rently programmed data. Secondly, you can set or change the existing
data by typing the command, followed by a space, and then the desired
entry (for example, ADDR 1234). In the list below, allowable program-
ming variables, if any, are shown in brackets [ ] following the command
name.
ADDH [1 ...65000]
This command sets or displays the radio’s network address. The net-
work address can range from 1 to 65000.
Network address must be programmed at the time of installation and
must be common across each radio in a given network. Radios are typi-
cally shipped with the network address unprogrammed. This causes the
address to display as NONE. This leaves the system in an invalid state and
prevents operation.
AMASK [noon oooo-FFFF FFFF]
This command sets the alarm bits that cause the alarm output signal to
be triggered. The PWR LED will still ﬂash for all alarms, but the alarm
output signal will only be activated for those alarms that have the cone—
sponding mask bit set. The hex value for the mask aligns directly with
the hex value for the ALARM command. The default is FFFF FFFF.
“H
MDS 05-3301AD1, Rev. A MDS 9810/2481.) Installation and Operation Guide 41
Through proper use of the AMASK command, it is possible to tailor the
alarm response of the radio. For more information on conﬁguring the
alarm response, contact Microwave Data Systems and request Applica-
tion Bulletin 98-002.
ASENSE [HI/LO]
This command is used to set or display the sense of the alarm output at
Pin 25 of the DATA INTERFACE connector, The default for transceivers
is active HI.
BAUD [xxxxx abc]
This command sets or displays the communication attributes for the
DATA INTERFACE port. The command has no effect on the RJ—ll
DIAG(NOSTICS) port.
The ﬁrst parameter (xxxxx) is baud rate. Baud rate is speciﬁed in
bits-per—second and must be one of the following speeds: 1200, 2400,
4800, 9600, 19200, or 38400. In the worst case, the radio will always
accept a minimum of 500 data bytes in a single continuous data trans-
mission. At baud rates of 4800 bps or less, the radio can support unlim-
ited continuous data u'ansmission at any hop rate. If hop time is set to
NORMAL or LONG, baud rates of up to 19200 bps with continuous unlim—
ited data transmission are possible. (See HOPTIME command.)
The second parameter of the BMJD command (she) is a 3-character block
indicating how the data is encoded:
a = Data bits (7 or s)
b = Parity (N for None, 0 for Odd, E for Even)
c = Stop bits (1 or a)
The factory default setting is 4800 baud, 8 data hits, no parity, 1 stop bit
(Example: 4800 um ).
NOTE: 7N1, 802, and 8E2 are invalid communication settings and are
not supported by the transceiver.
BUFF [ON, OFF]
This command sets or displays the received data handling mode of the
radio. The command parameter is either ON or OF. (The default is ON.)
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.
42 MDS 9810/24810 Installation and Operation Guide MDS 05-3301 A01, Rev. A
155.522“
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 25 to 50 ms, but the radio will not create any gaps in the
output data stream. This mode of operation is required for protocols
such as MODBUSm 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.
Changes to the BUFF setting may only be made at the master radio. This
is because the master radio broadcasts the buffer setting for the entire
network. At remote radios, the buffer setting may be read when the radio
is in synchronization with the master, but it may not be changed.
CTS [0—255]
The CTS (clear-to-send) command sets or displays the timer value asso-
ciated with the CTS line response. The command parameter ranges from
0 to 255 milliseconds.
For DCE operation, the timer speciﬁes how long to wait after the RTS
line goes high before asserting the CTS line. A timer value of zero
means that the CTS line will always be asserted (unless the radio is
attempting to throttle data as part of normal flow control operation).
For CTS Key operation (see the DEVICE command), the timer speciﬁes
how long to wait after asserting the CTS line before sending data out the
DATA INTERFACE port. A timer value of zero means that data will be sent
out the data port without imposing a key-up delay. (Other delays may be
in effect from other radio operating parameters.)
CTSHOLD [0-6000]
Used in DEVIcE crs KEV mode, this command sets the amount of time in
milliseconds that CT S remains present following transmission of the
last character out of the DD—25 port. This “hold time“ can be used to pre-
vent squelch tail data corruption when interworking with other radios. If
the command is entered when the radio is in nEwcs DCE mode, the
response CTSHOLD NIA will be displayed.
“ﬂ
MDS 05-3301A01, Rev. A MDS sew/24810 Installation and Operation Guide 43
mum "mm
m"-
DEVICE [DCE, CTS KEY]
The DEVICE command sets or displays the device behavior of the radio.
The command parameter is either DcE or CTS KEY.
The default selection is DCE. In this mode, CTS will go high following
RTS, subject to the CT S 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 an-ives faster than it can
be transmitted.
If CTS KEV 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 INTERFACE port until after the CTS programmable delay time has
expired (This gives the other radio time to key.)
Following transmission of the last byte of data. CTS will remain
asserted for the duration speciﬁed by the crsHOLD command. c‘rsuoLD
should be set sufﬁciently high.
DLINK [xxxxx]
DLINK followed by the baud rate sets the baud rate (bps) of the diagnos-
tics link. The following DLINK baud rates selections are allowed:
1200
- 2400
4800
' 9600
v 19200 (default setting)
Example: DLINK 4am sets the RJ-ll DIAG port to operate at 4800 bps.
The default is DLINK19200 and DLINK oN.
NOTE: The same baud rate must be entered into the InSite Equipment
List’s BAUD ﬁeld.
DMGAP [xx]
The DMGAP command sets the amount of time in milliseconds to wait
after the receipt of a character before interpreting the next received char-
acter as the start of a new message. When data port baud rates are slow,
the gap between characters within a poll may be so long that the radio
interprets the next character as the start of a new poll. When diagnostics
is being performed using passive messaging (see Performing Ner~
work-Wide Remote Diagnostics on page 57), this command may be used
to change this behavior.
44 MDS 9810124810 Installation and Operatlon Guide MDS 05-3301AD1, Rev. A
mans."
DTYPE [MODE/ROOTIGATEIPEER]
The DTYPE command speciﬁes the radio’s operational characteristics for
network-wide diagnostics. There are four possible types of nodes in a
network-wide diagnostics system.
The common types are:
0 ROOT—Always one, and only one, per network. The root is the
focal point of network—wide diagnostics information. Intrusive
diagnostics can originate from any radio, including the root.
However, the root is the only radio through which non-intrusive
diagnostics can be conducted
- MODE—The most common setting, and the default. This is the
basic system radio device-type. Typically, the radio network is
comprised of nodes and one root. Intrusive diagnostics can orig-
inate from any node. However, non-intrusive diagnostics can
only be conducted from the root node.
The default radio device-type is MODE. Less used are:
- GATE
- PEER
These node types are needed for repeater sub-networks and simplex
sub-networks where simplex frequencies are used. See the Net-
work-Wide Diagnostics System Handbook for an explanation of these
node types.
HOPTIME [XSHOFIT, SHORT, NORMAL, LONG]
The HOPTlME command sets or displays the hop time setting. The com-
mand is one of four keywords whose parameters and related efﬁciencies
are shown in Table 10.
Although the default setting is HOPTIME NORMAL transmission efﬁ-
ciency can usually be improved by using HOP11ME LONG when message
sizes typically exceed 256 bytes. This is because there will be less fre-
quent channel hops when using this setting, contributing to a smoother
ﬂow of transmitted data.
Table to. Hop time parameters
Time Max.
Hop Time per Bytes channel
Keywonl Hop per Hop Efﬁciency
XSHORT 10 ms 9 32.136
SHORT 40 ms 72 64.3%
NORMAL 80 ms 162 72.0%
LONG 160 ms 336 74.5%
“a
MDS 053301A01, Rev. A MDS 9810/24810 Installation and Operation Guide 45
Except for special cases. the use of HOPTIME SHORT or HOPTIME XSHORT
is not recormnended because of reduced channel efﬁciency. The only
time these selections should be considered is when the message size is
very small and strong interference of a persistent nature is occurring on
many frequencies. In this case, a shorter hop time may improve the
chances of a message getting through—but at the cost of reduced
channel efﬁciency.
Changes to the HOPTIME setting may only be made at the master radio.
(This is because the master radio establishes the hop time setting for the
entire network.) At remote radios, the hop time setting may be read
when the radio is in synchronization with the master, but it may not be
changed.
INIT
The lNl‘r command is used to reset the radio‘ 5 operating parameters to me
factory defaults. This may be helpful when trying to resolve conﬁgura-
tion problems that may have resulted from the entry of one or more
improper command settings. If you are unsure of which command set-
ting may have caused the problem, this command allows you to get back
to a known working state.
Use of the INrr command causes the following changes to he applied:
Table 11. Factory default values
produced by INIT commend
Correspondlng
Dmull Senlng command
Dev be operation DCE DEVICE DOE
RF output power 30 (Him (1 wall) PWR 30
C'TS dolly 0 CTS 0
(CTS is continuously
asserted)
DATA INTERFACE port 4600 baud BAUD 4800 m1
5 data bits
no parily
1 slop hll
Transmitter mos 9310
tut rr-qu-ncv 927.975 MHz
uns 24510
245344 MHz
mm, mos 9310 "X m
but rr-qu-ncv 002.025 MHz
nos 24310
240003 MHz
46
MDS 9810124810 Installation and Operation Guide
MDS 05-3301AD1, Rev. A
—as:“
Table 11. Factory default values
produced by INIT commend (Continued)
Corrospondlng
Command
Dot-I‘ll Settlnq
Tr: emmer MDS Will TX xxx
““ “WWW 902.025 MHz
_ MDS 24810
2400.09 MHz
Ree-Iver MDS 9810 RX xxx
— "m 1mm”?! 927.975 MHz
MDS 2431 0
24G3A4 MHz
7 Sldpped lrequenciu None (radio will hop SKIP NONE
across all 1019
lrsquencles)
* Hop time Normal (80 ms per hop) HOWIME NORMAL
Slmploxlduplex Halt-duplex SIMPLEX OFF
nperallon
A Butler mode Seamless data mode BuFF ON
enabled
M MODE [M, R, R-M]
The MODE command sets or displays the operating mode of the radio. A
master radio is designated by an M; a remote is designated by an R.
R-M indicates that the transceiver has been programmed to the special
remote-master mode (used in repeater—assisted peer-to-peer systems;
— see Section 22, Typical Applications (beginning on page 3) for details).
The R-M mode denotes a remote radio operating on master frequencies.
In all other respects, a remote-mm behaves just like a normal remote.
All units default to remotes; other modes must be speciﬁcally pro—
grammed with the MODE command.
OWM [xxxxx]
The OWM command sets or displays an optional ovmer’s message, such
7 as the system name. The entry can contain up to 30 characters.
own [xxxxx]
The OWN command sets or displays an optional owner’s name, such as
the site name. The entry can contain up to 30 characters.
— MDS 05-3301A01. Ftev A MDS 9810/24810 Installation and Operation Guide 47
PWR [xx—30]
This command displays or sets the desired RF forward output power set-
ting of the radio. The Pwn command parameter is speciﬁed in dBm and
can range from 20 dBm (MDS 9810 transceiver) or 10 dBm (MDS
24810 transceiver) through 30 in 1 dBm steps. The default setting is 30
dBm (1 watt). To read the actual (measured) power output of the radio,
use the snow PWR command.
In the USA, maximum allowable power is governed by FCC limits on
Effective Isotropic Radiated Power output (EIRP). The EmP limit of
+36 dBm means that any user with a net antenna gain greater than 6 dBi
must decrease the Pwn setting accordingly. Section 4.5, How Much
Power Can I Run? (beginning on page 18) contains a detailed discussion
of this topic.
RSSI
This command displays the radio’s Received Signal Strength Indication
in dBm (decibels relative to 1 mW). The output can range from —50 dBm
to —1 10 dBm. Command availability and results depend on the mode of
operation (master or remote).
For a remote radio, under normal operation, RSSI is based on the
average signal strength of the SYNC message received in each of the
eight frequency zones. (RSSI is sampled each time a SYNC message is
receivedfevery 1.6 seconds.) When using the RSSI reading to align a
directional antenna, it is important to make changes slowly so that the
RSSI reading will provide meaningful results. It will take several sec-
onds to indicate a change in signal level. The radio stays in RSSI mode
until Em is pressed.
For a master radio, under normal operation, entering the RSSI command
causes the response NOT AVAILABLE to he returned. This is because a
master is normally receiving signals from several remote stations and an
RSSI reading would be continually changing. The only exception is
when the SETUP command has been enabled. This disables hopping and
allows reading a “raw" RSSI signal level in real time from a master or
remote radio.
RTU [ON/OFFIO-GD]
This command re—enables or disables the radio‘s internal RTU simu-
lator, which runs with MDS’ proprietary polling programs (pollexe and
rsim.exe). The internal RTU simulator is available Whenever a radio has
diagnostics enabled. This command also sets the RTU address tl-mt the
radio will respond to.
The internal RTU can be used for testing system payload data or pseudo
bit error rate testing. It can be helpful in isolating a problem to either the
external RTU or the radio.
—-————__——__
48 MDS 9810124810 Installation and Operatlon Guide MDS 05-3301A01, Rev. A
mum
Rx [xxxx]
This command sets or displays the test receive frequency used in place
of hopping whenever the radio is in Setup mode. The test receive fre-
quency can be reprogrammed to any value between 927.975 MHz and
902.025 MHz (MDS 9810) or 2400.00 and 2483.44 MHz (MDS 24810),
inclusive. The factory default settings are listed below and have been
selected to be non-intrusive to normal operation.
Default Rec-iv- Frequencies
Master Remote
MDS 9810 927.975 MHz 902.025 MHz
MDS 24810 2483.44 MHz 2400.08 MHz
HXTOT [NONE, 0—1440]
This command sets or displays the amount of time (in minutes) to wait
for the next received data packet before issuing a receiver time-out
alarm. The default is NONE.
SETUP
This command sets up the transceiver for checking antenna SWR or
transmitter power with external measuring equipment. Do not use
during normal operation.
When the SETUP command is entered, the HHT prompt changes to
SEI'UP>, and:
. Hopping is disabled.
- Synthesizer frequencies are reset to the test frequencies speci—
ﬁed by the Tx and Rx commands.
- The radio can be keyed using the KEV command. DKEY is used
to unkey the radio. (If the radio is left in a keyed state it is auto-
matically unkeyed after several minutes.)
- The RSSI is sampled in a raw, continuous fashion regardless of
whether the unit is a master or a remote.
Entering a or QUIT returns the system to normal operation.
A timer keeps the Setup mode from accidentally leaving the system dis—
abled. After 10 minutes the system behaves as if 0 or QUIT had been
entered, returning to normal operation.
MDS 05-3301A01, Rev. A MDS 9510/24810 Installation and Operatlon Guide 49
if
55?
SHOW [PORT, DC, PWR]
The SHW command displays three types of information based on the
command variables. These are:
- PORT—Displays which connector port (RJ—ll or DB—25) is cur—
rently active for diagnostics and control.
0 Etc—Displays DC input/output voltages.
0 PWH— Displays the actual (measured) RF power output in dBm.
Unlike the Pwn command, this command shows the actual level
being measured, not the programmed RF power setting.
SIMPLEX [ON, OFF]
The SIMPLEX command sets or displays the radio’s mode of operation
(simplex or half-duplex).
By default, the system operates in half—duplex mode (SIMPLEX OFF). In
this mode, the transmit frequency of the master is the receive frequency
of the remote (and vioe-versa). The transceiver uses a transmit/receive
frequency split oftlﬁ MHz (MDS 9810) or 5.12 (MDS 24810) MHz.
The offset varies such that both frequencies will always ﬁt within the
same zone. (A zone is a 3.2 MHz (MDS 9810) or 10.24 MHz (MDS
24810) sub-band—see the ZONE DATA command.)
When simplex mode is selected (SIMPLEX ON), the master and remotes
always transmit and receive on the same frequency. This setting is
required for peer-to—peer simplex networks where remotes must be able
to communicate with other remotes. A slight increase in end—to—end
delay will occur when using this mode,
This command is “read—only” at remote radios. (Remotes must be syn-
chronized with the master radio to read the simplex status.)
SKIP [NONE, 1...8]
This command sets or displays which, if any, of the eight 32 MHz
(MDS 9810) or 10.24 MHz (MDS 24810) (128 frequency) zones will be
skipped from the radio’s hopping sequence. Skipping zones is one way
of dealing with constant interference on one or more frequencies. See
Section 4.3 (page 13) for more information on dealing with interference.
Figure 27 shows the frequency range covered by each zone. The com-
mand parameter is either the keyword NONE or an undelimited string of
up to seven digits where each digit 1...8 represents a corresponding zone
to skip. (For zone parameter input, the digits can appear in any order and
can be optionally separated by a blank space.) The SKIP command is
read-only at remote radios. (Remotes must be synchronized with the
master radio to read the skip status.)
50 MDS 9810124810 Installation and Operation Guide MDS 05-3301A01, Rev. A
MDS 951 0 TRANSCEIVER
901200 905.4“ mm ﬁlm “SM mam BIL!“ 924,600
in to to to m to to tn
005.315 mm 911.175 I! 4.975 “1.115 121.379 M15 “1.715
MDS 24010 TRANSCEIVER
mmmmmm ZONE 7
2400540 24mm mum m1 440 mum 2461.04“ 2462080
to to to h to In Io
mm 24am 2mm 2441520 2451.1» 2mm 2mm
Flgure 27. Frequency zones for MDS 9310 and 24810 transceivers
SNR
This command displays the signal-to—noise ratio of the received signal
expressed in dB. As used in this guide, the deﬁnition of signal-to-noise
is based upon the signal level following equalization, for valid frames
only. (A valid frame is deﬁned as containing no more than one bit error,
and belonging to a frame addressed for the receiving radio.) SNR is
updated and latched for each valid frame received. A ﬁlter in the DSP
tempers the effect of any sudden changes in the value.
SNR 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, For
remote radios, a value of 0 is reserved to mean “no signal”; it is dis—
played whenever a remote is not in synchronization with the master sta—
tion.
When the SNR command is used, it causes the DIAG(NOSTIC) port to
enter an update mode, and it will provide an updated signal-to-noise
ratio every 1.6 seconds. It stays in this mode until the key is
pressed.
SREV
This conunand displays the software version currently loaded into the
transceiver.
A display of mu me: is an example of the software version identiﬁer.
STAT
This command is used to check alarm status. If no alarms exist, the mes-
sage NO ALARMS PRESENT appears at the top of the HHT display.
MDS 05-3301 A01, Rev. A MDS 9810124310 Insfallation and Operation Gulde 51
"mum
mm... m
If an alarm does exist, a two—digit event code (00—3 1) is displayed and
the event is identiﬁed as a “major” or "minor” alarm. A brief description
of the event is also given,
If more than one alarm exists, the word MORE appears at the bottom of
the screen and additional alarms are viewed by pressing the m
key. Detailed descriptions of the alarm codes are provided in Table 13
on page 55.
TEMP
This command displays the internal temperature of the transceiver in
Centigrade. (Note that the radio is speciﬁed to operate in an environ-
ment between —30 C° and +60 C°). This internal reading my be higher
than the outside temperature by several degrees.
TX [xxxx]
This command sets or displays the test transmit frequency used in place
of hopping whenever the radio is in Setup mode. The test transmit fre-
quency can be reprogrammed to any value between 902.025 MHz and
927.975 MHz (MDS 9810) or 2400.00 and 2483.44 MHz (MDS 24810),
inclusive. The factory default settings are listed below and have been
selected to be non-intrusive to nomial system operation.
Default Tun-mi! Frequeneles
“mgr Remote
MDS 9810 927.975 MHz 902.025 MHZ
MDS 24610 2400.08 MHz 2488.44 MHl
UNIT [10110-65000]
The unit address is factory programmed to the last four digits of the
serial number. If reprogrammed in the ﬁeld, the entry must consist of
ﬁve digits. This command is reserved for future applications.
ZONE DATA
The transceiver divides its frequency operating spectrum into eight con-
tiguous 3.2 MHz (MDS 9810) or 10.24 MHz (MDS 24810) zones.
(These are the same zones referenced by the SKIP command described
earlier.) Data frame statistics are maintained for each zone to indicate
the transmission quality through the network. This information is useful
for identifying zones where signiﬁcant interference exists.
Zone quality information can be accessed using the ZONE DATA com-
mand on a connected HHT. For each mm: (178), it shows you the
number of data frames sent, the number received, and the number
received with errors. If an excessive number of errors are seen in one or
more frequency zones, it may indicate interference, and you should con-
sider “skipping" those zones using the SKIP command.
52 MDS 9810/2481!) lnslallatlon and Operation Guide MDS 05-3301A01, Rev. A
-2'-_.°ﬂ' '
The ZONE DATA command displays its information on four lines as
shown in Figure 28. Ifthe display seems to “roll off” the screen, verify
that your HHT is set for an 80 character screen size. See Section 7.2,
Hand-Held Terminal Setup (beginning on page 36).
ZONE It
DATA FRAME STATISTICS
TOTAL SENT
TOTAL RECEIVED
TOTAL HEC'D WITH ERRORS
Figure 28. "HT dlsplay for ZONE DATA command
If ZONE DATA alone is entered, the information for Zone 1 is displayed
ﬁrst. Successive zones can be viewed by pressing the ENTER key, or by
entering the zone number of your choice (1...8) at the NEXT ZONE?>
prompt.
It is also possible to go directly to a speciﬁc zone by entering ZONE DATA
|1...a1, where the number entered equals the desired zone. Data for the
speciﬁed none is displayed and then control returns to the command
prompt
Entering a or ourr causes the program to exit and retum to the command
prompt.
A variation on the ZONE DATA command is ZONE DATAI This causes data
to be retrieved from all zones. Data is sequentially displayed for each of
the 8 zones and then control returns to the command prompt.
(Note: If a frequency zone has been skipped, statistics will still be gath-
ered for that zone when ZONE DATA is invoked at a remote site, but the
numbers will accumulate very slowly since the only data being passed
in a skipped zone is the radio’s synchronization signal. When invoked at
a master, no polls will be received from a skipped zone.)
ZONE CLEAR
The ZONE CLEAR command clears the zone data for all zones, resetting
the count to 0. (Zone data is also cleared automatically upon reboot, or
upon saturation of a zone data counter.)
m“—
MDS 05-3301A01, Rev. A MDS 9310124810 Installalion and Operation Gulde 53
-5-m...“ “
8.0 TROUBLESHOOTING
Successful troubleshooting of an MDS transceiver system is not difﬁ-
cult, but requires a logical approach. It is best to begin troubleshooting
at the master station, as the rest of the system depends on the master for
polling instructions and synchronization data. If the master station has
problems, the operation of the entire network will be affected.
When communication problems are found, it is good practice to begin
by checking the simple things. All radios in the network must meet these
basic requirements:
. Adequate and stable primary power
- An efﬁcient and properly aligned antenna system
. Secure connections (RF, data & power)
0 Proper programing of the radio’s operating parameters, espe—
cially Mode selection (MODE), Network Address (ADDR), and
interface Baud Rate (BAUD)
- The correct interface between the radio and the connected data
equipment (proper cable wiring, data format and timing).
8.1 LED Indicators
The LED status indicators are an important troubleshooting tool and
should be checked whenever a problem is suspected. Table 12 describes
the function of each status LED.
mmnnm
- - - -
Table 12. LED status Indicators
LED Name Description
PWR - Continuous—Power is applied to the radio. no problems detected,
- Flashing 5 times per second—Fault indication.
See Section 8.0, TROUBLESHOOTING (beginning on page 54).
- Flashing once every 4 seconds—Radio Is In Sleep Mode.
SVNC Lights continuously to Indicate the radio is receiving/settling
synchronization frames. Within 16 seconds afstart-Up. this LED should
be lit continuously.
TXD Indicates ElA-ziz space signal (logic high) input to the DB-25
connector.
FlXD indicates EIA-232 space signal (logic high) output from the DB-25
connector.
——_———_—__
54
MDS 981 0124810 Installation and Operation Guide MDS 0&3301A01, Flev. A
MDS 05-3301A01, Rev. A
51mm“ m...
8.2 Alarm Codes
When an alarm condition exists, the transceiver creates an alarm code
that can be read on an HHT connected to the radio’s DIAG(NOSTICS)
port. These codes can be very helpful in resolving many system difﬁcul-
ties.
Checking for Alarms—STAT command
To check for the presence of alarms, enter STAT on the HHT. If no alarms
exist, the message N0 ALARMS PRESENT appears at the top of the display.
If an alarm does exist, a two-digit alarm code (00—3 1) is displayed, and
it is identiﬁed as a major or minor alarm. A brief description of the alarm
is also given. Alarm codes and their meanings are listed in Table 13.
If more than one alarm exists, the word MORE appears at the bottom of
the screen; additional alarms can be viewed by pressing ml .
Major Alarms vs. Minor Alarms
Major alarms report serious conditions that generally indicate a hard-
ware failure, or other abnormal condition that will prevent (or seriously
hamper) further operation of the transceiver.
With the exception of alarm code 00 (network address not pro-
grammed), major alarms generally indicate the need for factory repair.
Contact MDS for further assistance.
Minor alarms report conditions which, under most circumstances, will
not prevent transceiver operation. This includes out-of-tolerance condi-
tions, baud rate mismatches, etc. The cause of these alarms should be
investigated and corrected to prevent system failure.
Alarm Code Deﬁnitions
Table 13 contains a listing of all event codes that may be reported by the
transceiver.
Table 13. Alarm codes
Alarm Almn
Code Type Description
00 Major The network address is not programmed.
01 Major Improper soﬂware detected for this radio model.
02. 03 -— Reserved for factory use.
04 Major One or more of the programmable synthesizer loops is
reporting an out-ol-Iock condition.
-- Reserved for factory use.
06 Major A—to—D fault.
MDS 9810/2481!) Installation and Operation Guide 56
-=~e"
........ m
Table 13. Alarm codes (Continued)
E“
Alarm Alarm
Code Type Description
07 Major One or more of the radio’s internal voltage regulators Is
reporting a failure. The radio will not operate.
Major The system is reportan that it has not been calibrated. Factory
calibration is required for proper radio operation.
09 ~ Reserved tor lactory use.
10 Major The microcontroller unit (MCU) was unable to properly
program the system to the appropriate defaults. A hardware
problem may be indicated.
11 ~ Reserved for lectory use.
12 Major Reoeiver time-out alarm.
1345 -- Reserved for factory use.
16 Minor The unit address is not programmed.
17 Minor A data parlty lault has been detected on the DATA
INTERFACE connector. This usually Indicates a parity setting
mlsmatch between the radio and the RTU.
18 Minor A data lraming error has been detected on the DATA
INTERFACE connector. This may Indicate a baud rate
mismatch between the radio and the RTU.
19-24 -- Reserved tor factory use.
25 Minor The 6.0 volt pwver regulator is outﬁt-tolerance. tithe error is
excessive, operation may fail.
26 Minor The dc input voltage is out-ot—tolerance. It the voltage istoofar
out-ol-toleranoe, operatlon may tail.
27, 28 -- Reserved for factory use.
29 Minor RF output power lault detected. (Power dilfers by more than 2
dB from set level.) Otten caused by high antenna system
SWR. Check antenna, teedline and connectors.
30 Minor The system Is reporting an RSSI reading below —105 dBrn. Bit
enors are likely to be present In the data.
31 Minor The Iransoeiver’s intemal temperature is approaching an
out-of—telerance conditlon. ll the temperature drifts outside at
the recommended operating range, system operation may
fall.
—“_——
56 MDS 9610124810 Installation and Operation Guide MDS 05-3301AD1, Rev. A
Eek“ “
8.3 Performing Network-Wide Remote Diagnostics
Diagnostics data from a remote radio can be obtained by connecting a
laptop or personal computer running MDS InSite diagnostics software
to any radio in the network. Figure 33 shows an example of a setup for
performing networkwide remote diagnostics.
Remove MﬂDE
OPEMTW _ _ _
ACTIVE mssmrne ourv
(Nor-mm?)
to am
re
m“ muesme
Peer
m MIDE OPERATION
ACTNE MESSAGIM} on
ussrvs amine
WE‘FL‘E __________ ammo mu
(To WAmAnom
/’
mommies mu
nor-rem
m-rooupursn
Figure 29. Network-Wide Remote Diagnostics Setup
If a PC is connected to any radio in the network, intrusive polling
(polling which brieﬂy intemrpts payload data transmission) can be per-
formed. To perform diagnostics without interrupting payload darn trans-
mission, connect the PC to a radio deﬁned as the “root” radio. A radio
is defined as a root radio using the DTVPE noo‘r command locally, at the
radio.
——ﬁ——ﬁ__
MDS 05-3301 A01, Rev. A MDS 9810/24810 Installation and Operation Guide 57
A complete explanation of remote diagnostics can be found in MDS’
Network-Wide Diagnostics System Handbook (MDS PIN
05-3467A01).
Table 14. Network-wide diagnostics radio setup commands
COMMAND DESCRIPTION
DLIIK [mun Sn baud mm m magnosttes link
Details Page 59
tame Sat radio‘s operational mummies to- net»
INODEMOGTIGATEIPEEH] walk—wide diagnostics
Details Page 59
. Program one radio in the network as the root radio by entering the
07va ROOT command at the radio,
. At the root radio, use the DLINK on and DUNK [baud mo] commands
to conﬁgure the diagnostic link protocol on the RH] port,
. Program all other radios in the network as nodes by entering the
DTVPE NODE command at each radio.
. Use the DLINK on and DLINK [baud rate] conunands to conﬁgure the
diagnostic link protocol on the RJ—ll port of each node radio.
4 Connect same»site radios using a null-modem cable at the radios’
diagnostic ports.
. Connect a PC on which MDS InSite software is installed to the root
radio, or to one of the nodes, at the radio’s diagnostic port (This PC
may be the PC being used to collect payload data, as shown in
Figure 33.)
To connect a PC to the radio’s DIAG. port, an RJ-ll to DB—9 adapter
(MDS P/N 03-3246A01) is required. If desired, an adapter cable
may be constructed from scratch, using the information shown in
Figure 34.
M“
58
MDS sew/24810 Installation and Operation Guide
MDS 05-3301A01. Rev. A
HJ—H PIJJG 059 FEMALE
(TO RADIO) (TO OOMPUTEH)
4 TXD ﬁ RXD 2
5 RXD no a
RJ-H PlN LAYOUT 6 PE EN 5
Figure 30. RJ-11 to DB-9 Adapter Cable
7. Launch the MDS InSite application at the PC. (See the MDS InSite
5 Radio System Management Software Installation Notes for
instructions.)
DLINK [xxxxx]
DUNK followed by the baud rate sets the baud rate (bps) of the diagnos-
tics link. The following DLINK baud rates selections are allowed:
1200
2400
4800
- 9600
19200 (default setting)
Example: DLINK 4800 sets the RJ-ll DIAG port to operate at 4800 bps.
The default is DLINK192M and DLINK on.
NOTE: The same baud rate must be entered into the InSite Equipment
List’s BAUD ﬁeld.
DTYPE [NODE/ROOT/GATEIPEER]
The DTYPE command specifies the radio’s operational characteristics for
network-wide diagnostics. There are four possible types of nodes in a
network»wide diagnostics system.
The common types are:
- Hoot—Always one, and only one, per network. The root is the
focal point of network-wide diagnostics information. Intrusive
diagnostics can originate from any radio, including the root.
However, the root is the only radio enabling non-intrusive diag—
nostics.
- MODE—The most common setting, and the default. This is the
basic system radio device-type. Typically, the radio network is
comprised of nodes and one root. Intrusive diagnostics can orig-
inate from any node. However, non—intrusive diagnostics can
not be facilitated through a node.
MDS 05-3301A01, Rev. A MDS 9810/24810 Installation and Operation Guide 59
2mm“
The default radio device-type is MODE. Less used are:
- GATE
- PEER
These node types are needed for repeater sub-networks and simplex
sub—networks where simplex frequencies are used. See the Net-
work—Wide Diagnostics System Handbook for an explanation of these
node types.
8.4 Troubleshooting Chart
Table 15 provides suggestions for resolving some common system dif—
ficulties that may be experienced in the radio system. If problems per-
sist, contact the factory for further assistance. Refer to the inside back
cover of this guide for additional information.
Table 15. Troubleshooting chart
Dmlcolty Recommended System cheeks
Unit Is 5. Check for the proper supply voltage at the power connector.
inoperative.
b. The transceivar’s internal reachable fuse may have tripped. To
reset It, momentarily remove and reapply powerto the radio.
Interiererrce is 5. Verify that the syslem has a unique network address. Nearby
suspected. systems with the same address will cause Interterence.
b. Use the ZONE DATA command (page 52) to check lor
interference In specitic zones. Look out attested zone(s) using
the SKIP command (page 50).
c. If cmnidlrecticml antennas are used on remote stations,
consider changing to directional antennas, This will ollen limit
interterenoe to and from other stations.
No a. Check for secure Interface connections at the radio and the
synchronization connected device.
With mm" or b. Check the antenna. feedllne and connectors. Reﬂected power
pagzsvnea'rf; should be less than 1055 at the lorwatd power reading (SWR
9° ' - 2:1 or lower).
o. It the remote radio is In synchronization. but perlormanoe is
poor, check the received signal strength using the HSSI
command (page 48). It RSSI is low, it may indlcale antenna
problems, or misalignment oi directional antenna headings.
d. Verify proper programming ot system parameters: mode,
network address. data interface baud rate, transmitter power,
CTS delay, etc. It may be helpful to use the INIT command
(page 46). which resets all parameters lo lactory defaults.
a. Check for alarms using the STAT command (page 51)
9.0 TECHNICAL REFERENCE
The following section contains material that is not essential to using the
radio, but may prove helpful in diagnosing performance problems or in
gaining a better understanding of the unit’s operation.
60 MDS 9810/2451!) Installation and Operation Guide MDS 05-3301A01, Rev. A
-ﬁ'r.“:"
9.1 Technical Specifications
GENERAL
Frequency Hopping Range:
Up to 1019 lrequencies within:
MDS “10: 902—928 MHZ,
conﬁgurable in 3.2 MHz zones
MDS 24310: 2400.0CF2483.“ MHZ,
conﬁgurable In 10.24 MHz Zena
Hop Pattern: Based on network address
Frequency Stability: $1.5 ppm
Simplex Operation: User selectable
Hell-Duplex Operation:
MDS 9610: $1.6 MHz TXIFIX split
MDS 24810: 512 MHz TXIRX split
Network Mdressee: 65.000
Temperature Range: Transceiver: —80“C to 460°C
Humidity: 95% al 440°C; non-condensing
Primary Power: Transceiver: 13.8 V dc (10,5—25 V dc range
Transceiver Supply Current
(typical):
Transmit: MDS 9010: 400 mA @ 1348 V dc
MDSm102600mA ©1348Vdc
Receive: MDS 9010: 125 mA@ 133th:
MDS 24810: 200 mA @1S.B V dc
Sleep Mode: 60 mA @ 13.8 V dc
Size (excluding mtg. hardware): 2.0" x 5.62" x 7.25"
51 x 143 x 184 mm
Weight: 22 III/1.0 kg
Case: Diem aluminum
Approvals: - FCC Part 15.247
' Industry Canada ESE-210 and RSS~139
' ETSI HS 800 328
- ULIFM Class 1, Div. 2; Groups A. B, C and D
hazardous locations
- UL Liam
' CE Mark
- Contact MDS for inlcrmralion on availability and
govemmentel approvals In other countries
DATA CHARACTERISﬂCS
Dela Interface: EIA—232 signaling standard
Interface Connector: DB-ZS female
Dela Rate: 1200. 2400, 4300, 9600, 19200, 38400 bps
asynchronous
Data Latency: <10 ms typical (buffer all)
“M
— MDS 05—3301A01, Rev. A MDS 9810/24810 Installation and Operation Guide 61
-=;..""'::"
EtyteLength: 100711bits
Maximum Data Transmission: Continuous up to 19200 bps;
Non-continuous at 38400 bps
TRANSCEIVER RF CHARACTERISTICS
TRANSMITTER:
Power Output
(at antenna connector): MDS 9910: 0.1 to 1.0 watt (+20 dBm to +30 dBm)
$1.0 dB. set by user
MDS 24810: 0.01 to 1.0 watt (+10dBmto+30 dBm)
1:15 as, set by user
Duty Cycle: Continuous
Modulation Type: Binary CPFSK
Output Impedance: 50 Ohms
Spurious: —60 dBc
Harmonics: -80 dBc
RECEIVER
Type: Double conversion superheterodyne
Bit-Error Hate: MDS 9810: Less than 1x10'E at —1 10 dBm
mos 24310: Less than 1x10‘6 at —102 dEm
intermodulation: MDS 8810: 59 dB minimum (EIA)
MDS 24810: 59 dB minimum (EIA)
Desensitlzation: MDS 9810: 75 dB
MDS 24810: 72 dB
Spurious: 70 dB minimum
Bandwidth: MDS 9610: 25 kHz
MDS 24810: 50 kHz
Interference Ratio
(BER degraded by 104): Cit-channel: -10 as
Adiacent channel: +30 dB
Two channels away: +50 dB
Three channels away: +60 dB
Time Required to Synchronize
with Master Radio: Less than 13 seconds (typical)
9.2 FISSI Checks with a Voltmeter
As an alternative to the HHT method of measuring RSSI (see Antenna
Aiming on page 33), a dc voltmeter may be connected to Pin 21 of the
lransceiver‘s DATA INTERFACE connector.
Figure 31 shows the relationship between R551 and the dc voltage at Pin
2 1 .
NOTE: RSSI Readings are not accurate for incoming signal strengths
over —50 dBm.)
62 MDS 9810124810 Installation and Operation Guide MDS 05-3301AD1, Rev. A
51525 m==="".
. ﬁp‘
u Jame
+ DC vows (PIN 21)
[v m
U! 01
9° }9 ,’\° 25’
SIGNAL LEVEL (dBm)
Figure 31. R881 vs. V do at Pln 21 0! DATA INTERFACE connector
9.3 Data Interface Connections (DB-25)
The DATA INTERFACE connector is used to connect the radio to an
external DTE data terminal that supports the ETA-232 format. The radio
supports data rates of 1200, 2400, 4800, 9600, 19200 and 38400 bps
(asynchronous data only).
The DATA INTERFACE connector mates with a standard DB-25 plug that
is available from many electronics parts distributors. Table 16 lists each
pin on the connector and describes its function. Figure 32 shows the
DATA iNTERFACE connector.
MDS 05-3301A01 , Rev. A
MDS 9810124810 Installation and Operation Guide
Pin w. Pln m-
mm Na. ta Mm
am is Unuud
amnﬁf’M 3 1g mnwmum
. u
“W‘smcm'uamuu’w 2 m mumummw
esslvm- at 2 any,“
Firmware—Donna's“ an ’M‘D°Dl
nsvacammeonm w ; ﬁﬂsg'wmﬁm,
Untlﬂthledmlluluﬂlm J; 5 E Mann (0157
“mm ‘s 4 RequmbSmdlwurth’E)
“""’"’ ‘5 ; mzﬂ'hmﬁr
”mm“ “ 1 momma
'M.lll-lm
~ mum In real! Insult-Ion.
Figure 32. Data Interface connector (DB-25) pins
As viewed from outside the radio
Table 16. Data Intortace connector (DB-25) pln descriptions
Pln Input!
Numb-r Output Pin Description
1 -- Protective Gmund
Connects to ground (negative supply potential) on the
redle's PC board and chassis.
2 IN TxD—Trensmlltod Data
Accepts TX data from the connected device.
3 OUT RXD—Hecelved Dull
Supplies received data to the connected device.
4 IN HTS—Hoquest-to-Send Input
5 OUT CTS—CIlIr-lo-Send Output
Goes ‘high' eﬁar the programmed CTS delay tlme has
elapsed (DCE), of keys an attached radio when RFdata
arrives (CTS KEY).
6 our use—cm. sm Ready
valdes a 46 V dc DSR slgnal through a 215 la) resistor.
7 -- Signal Ground
Connects to ground (negative supply potential) at the
radio's PC board.
8 OUT DcD—Dale carrier Detect
A "high' Indicates hopping syndrrcnizetlon.
9 ~ Unused.
10 OUT HUS—Recenter Unequolched Sinner
Provides +8 V dc through a 1 kn resistor whenever the
receiver squelch Is open. and drops to less than 1 V dc
when the squelch is closed.
1 1 v- Unused
12 IN Sloop Mode
A ground on this pin turns on most circuits in the radio,
includlng transmit. receive, modem and dlagncstic
Iuncticns. This allows tor greatly reduced power
consumption, yet preserves the radio’s ability to be
quickly brought on line, See Section 5.5. 05an the
Radio‘s Sleep Mode (beginning on page 31) for details.
13 -- Unused.
64 MDS 9510/24810 Installation and Operation Guide MDS 05-3301A01, Rev. A
"mm-"m
Table 16. Data interface connector (DB-25) pin
Pin Inpul/
Number Output Pin Description
14 _, Unused. .
15 -- Do not connect— Factory test point.
16 -- Unused.
17 -- Do not connect—Factory test point.
18 INIOUT Accessory Pow-r
Unregulated input/output. Provides a source of power
ior low-current accessories. The supply voltage may be
between 11.0 and 25 volts.
19 OUT 9.9 V dc Regulated Output
Provides a source cl regulated voltage at 100 rnlt for
low-power accessories.
20 -- Do not connect—Reserved lor luture use.
21 OUT asst—Received signal Strung"! Indication
A on voltmeter may be connected to this pin to read the
relative strength at the incoming signal. Figure 81 on
page 63 compare RSSI to dc voltage
22 — Unused.
23 IN Diagnostic Channel Enable
A ground on this pin causes the radio’s microccntroller
to open the 05-25 DATA INTERFACE connector for
diagnostics and control (in place of the more commonly
used RJ—11 DIAGNOSTICS) connector).
24 -- Unused.
25 OUT Alarm Output
A logic low (less than 045 volts) on this pin indicates
normal operation. A logic high (greater than 4 volts)
indicates that an alarm condition is present. This pin can
be used as an alarm output, provided the Internal series
resistance at 1 kit "3 considered.
9.4 Bench Testing Setup
Figure 33 shows a sample test setup that can be used to verify the basic
operation of MDS radios. This test can be performed with any number
of remote radios by using a power divider with the required number of
output connections.
The RTU simulator shown in the test setup (MDS Part No. 03-2512A01)
is a microcontroller that emulates a remote terminal unit operating at
1200, 2400, 4800, or 9600 bps. Custom software is supplied with the
RTU simulator that allows continuous polling of remote radios. The
software reports the number of polls sent, polls received, and the number
of errors detected. The software runs on an IBM-compatible personal
computer.
MDS 05-3301A01, Rev. A MDS 9810124610 Installation and Operation Guide 65
mam
NOTE: It is very important to use attenuation between all units in the
test setup. The amount of attenuation required will depend 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 transceiver in
the test setup.
COMPUTER RUNNING mu smuuroﬁs
Mos InSttnPROGRAM Mos PIN os—zsmm
' rowan DNIDER
woman ATTENUATORS / ‘\ Mon—momma AWENUATW
~ mason-15mm- ~Imtdnnmyum~ndmdupuu
- wmmimum noun ~ sw Mmmum m
Flguro 33. Typical setup tor bench testing of radios
9.5 Using Radio Configuration Software
Windows-based Radio Conﬁguration software (MDS P/N 03-3156A01)
is used for upgrading the internal radio software when new features
become available from Microwave Data Systems. The software
includes on-h'ne user instructions, and an installation booklet is provided
with the software package. Contact MDS for ordering information.
Connecting a PC
To connect a PC to the radio’s DIAG(NOSTICS) port, an RJ-ll to DB-9
adapter cable (MDS P/N 03-3246A01) is required. If desired, this cable
may be constructed from scratch using the information shown in
Figure 34.
Upgrading the Radio’s Software
Using the Radio Conﬁguration software, select RADIO SOFTWARE
UPGRADE under the svsTEM menu. Follow the prompts and on-line
instructions to complete the upgrade procedure.
Software upgrades are distributed as ASCII ﬁles with a 528 extension.
These ﬁles use the Motorola S-record format. When the download is
activated, the radio‘s PWFl LED will ﬂash rapidly, conﬁrming that a
download is in process. The download takes about two minutes.
SS MDS 9810/24810 Installation and Operation Guide MDS 05-3301A01, Rev. A
NOTE: If a download fails, the radio is left unprogramrned and inop—
erative. This is indicated by the PWR LED ﬂashing slowly (1
second onll second off). This condition is only likely if there
were a power failure to the computer or radio during the down-
loading process. The download can be attempted again when
the fault has been corrected.
N41 PLUG D59 FEMALE
(TO RADIO) (TO COMPUTER)
4 TXD \ RXD 2
5 RXD TXD 3
RHI PIN LAYOUT 6 GND GND 5
Figure 34. HJ-11 to DB-9 adapter cable
(for software upgrade using connected PC)
MDS 05-3301A01, Rev. A MDS 9810124810 Installalion and Operatlon Guide 67
9.6 dBm-Watts-Volts Conversion Chan
Table 17 is provided as a convenience for determining the equivalent
voltage or wattage of an RF power expressed in dBm.
Table 17. dBrn-Watts-Volls conversion—for 50 ohm systems
dBm V Pa 118!“ V Po dBm mV P17 dBm 41V Pﬂ
+50 100.0 200W 0 225 1.0mw 49 0.00 00 2.9
150 70 1 100W 4 200 mm 50 0.71 011m 00 2.51
440 54.0 00W -2 400 0mm -51 0.04 400 2.25 .1pw
440 50.0 04W 0 .150 51mm 50 0.57 401 2.0
+47 50.0 50W -4 .141 mm 53 050 402 1.0
445 75 425 52mw -54 0.45 400 1.5
445 -0 .115 250m 55 0.40 404 1.41
444 77 .100 .20mw 50 0.551 405 1.27
+43 -0 000 Jam -57 0.02 405 1.15
442 -0 000 125mw 50 0.205
441 40 .071 .10mw 69 0.51 00111 nv Po
«0 41 054 00 0.25 mum 407 1000
400 42 .050 51 0.200 403 900
«10 4:1 050 412 0.100 499 000
+07 44 045 011 0.100 410 710 .0|pW
405 45 040 04 0.141 4” 540
+05 40 0055 412 500
+04 dBm MI P0 415 500
433 11an mV P17 45 123 414 450
432 47 31,5 55 115 415 400
+3‘ 40 20.5 07 100 410 355
+30 40 25.1 50 90 417 325
+5 20 22.5 mmw 09 00 410 205
+29 -21 20.0 -10 71 mw 410 251
427 722 17.9 —71 55 420 225 .001pw
‘25 -2:1 150 -72 50 421 200
+25 —24 14.1 773 50 422 100
*2‘ -25 120 -74 45 420 100
*23 -25 11.5 -75 40 424 141
+22 -27 10.0 -70 05 425 120
+2‘ 20 0.5 —71 52 420 117
‘29 -20 0.0 -70 20 427 100
+10 00 7.1 00mm 49 25 420 50
”9 01 0.25 -00 225 mm 420 00 .1fw
“7 - 02 5.0 -01 20.0 400 71
2‘6 I.“ “WW 00 5.0 -02 100 4:11 51
1'5 ‘25 “MW 04 4.5 00 10.0 402 50
r“ ' ‘5 5m" -05 4 0 -04 11.1 400 50
”3 ”JD 2°mW 45 0.5 705 125 404 45
“2 90 “MW 57 02 05 11.5 405 40
+11 00 12.5mw 00 2,35 47 10.0 433 35
“0 17‘ WNW 410 2.5 00 9.0 407 00
1“ 54 “MW 40 25 .1;7w 00 0.0 400 29
03 58 “NM 41 2.0 00 7.1 .0o1nw 400 25
+7 500 5"'W 42 1.0 01 5.1 440 25 mm
25 445 ‘mW 40 1.0 —02 5.75
*5 400 ”NW 44 1.4 00 5.0
M 355 2-5'HW -45 1.25 -04 4.5
+5 520 2~°mW 40 1.10 05 40
+2 200 1.0005 47 1 00 00 3,5‘
41 252 1,2smw 4, 0.00 707 3,2
E“
68 MDS 9810/248101nstallaiian and Operation Guide MDS 05-3301A01, Rev. A
—=E=°"“
mm. m.
MDS 05-3301A01, Rev. A
MDS 9810124810 Installajion and Operation Guide 65
70 MDS 9810/2481!) Installation and Operation Guide MDS 05-3301A01, Rev. A
INDEX
ACCESS DENIED enur mung: 37
Awesome liable) 7
ADDR comm-ml (sei/dinpiny nah network nddreu) 41
Ahrm
checking for 55
code deﬁnition 56
codes 55
codes. mble 56
major m minor 55
nnrpnrpin (Pin 15) 66
waiver timeout (KX'IUI' command) 49
met uumui signal 42
ur/dixphy umpmsensc (ASENSE mmznd) 42
sum (STAT wmmnnd) 52
ALARM command (DI-01m; lee STAT cumin-nil) 51
AMASK command (conﬁgure lhrm output sis-ml) 42
Annun-
Wmnneﬂecmr, illustrated 16
dish, illumled 17
insulhtiim 23
("unidirectional 111115111131 16
performance npﬁmiulion 33
selection 15
SWR check 33
synen. gain vs. power amp“! nening, nine 19. 20
nynrern gain. deﬁned 8
Yngi. iunnnnmd 15
AMP, comm-ml (nu/may elem unpnt nine) 42
BAUD mum-ml (ﬂu/display dm mud-u port attribute.) 42
Blind rm
aching 34
sening fnr RJ-ll DIAG pm (DLINK enmmnnd) 59
Bllld "I! (Mufﬁn Ilnk) 44, 60
Bit, deﬁned a
BPS (mun-perm“). deﬁned 8
RUFF command (mldixphy waived dau- hnndnngmude) u
Byu, deﬁned 8
c-ue
admin, for connecting dilgnnslics pc in redid 59, 67
ndnprer,m-11 in 1313-9 (iiinmmd) «1,153
dnin equip-uni in MA mines ennnnemr 24
am inierfnce wning for nun-modern 31
rim immrnce wiring for peeing-peer rysmrnn mm repute!
assistance 23
dluinwrfwewiﬁng formﬂ-endlinks 29
Clble (cm-«o
(aniline: I7
HHT m ndin (milled coil!) 35
iocni inwlfwe for repenier system 75
nmninnrm length, remmuided 24
null-modem. for reperrer eysinm 30
null-maxim, for same-site radios 59
pnwer (posiﬁve/negnive leads) 24
COMZMAND FAILED um melts: 37
Command:
ADDR (sei/dispiny ndio Mzwolk rddms) 41
AMASK (cunﬁgme nidrmourpur signal) 42
ASENSE (selldisylay ainnn mlrpul sense) 42
BAUD (mldiiplny chm Emu-face pun mini-res) 42
BUFF (sei/ilisplxy received thus handling mode) 43
crs (mudisplay CTS iine nespolue Lima) 43
(1311014) (nee/dispiny crs nnid iimer) 44
dmiud derenpnons 41~54
DEVICE (set/display DCE nrcrs Key behavior) 44
dingnoslic/lm 41
dinpiny Opel-lung mm 40
DUNK (seI/dlxphy bind me of dingnmn‘es link) 44
DMGAP (net lime m wnii between chm-mm) 45
DTYPE (selndio's dimmer type) 45
entering an Haul-Held Terminal (HHT) 37
Hind-Held Termini! (H'HT) 37
110?de (let/display hupime liming) 45
how med 4]
mrr (leslnm factory dam-ll wing) 46
MODE (sci/display min/mum: npendnn) 47
Inc“ used 4l
mmrk ncnngin-nrian see 59
UWM (lei/display optimal mum‘s mange) 48
OWN (Del/display optimal menu‘s 1mm) 48
PWR (revmnpiny RF mud onqm power) 48
R851 (display received signal snenyn) us
IU'U (enablddinblc inwmal m!) 49
kx (sei/dirpiny men receive frequency) 49
Rxmrr (set/display waived 11m nmeoul Vllllt) 49
seyprpgum 39
ssru1>(enierimingendsempmode> 49
SHOW(disp]-ylcﬁvepun,dnvolu.memnedpownvulpm) so
SMIJ1X(se1/displly WWW npeminn) so
510? (set/display frequency me in rkip) 51
SM! (displny aim-wooile min) 51
smav (dinpiny n-nnineiver wﬁwm version) 52
STAT (list 1.1mm) 52
511mm, table 33
TEMP (dirpiny ininrnni tempellmre) 52
as cummlmil (rev/dupiny crs une lupus! urns) 43
(H'SHOLD mun-ml (leﬂﬂhplly L'lS hold M) M
MDS 05-3301A01, Rev. A
MDS 9810124810 Installation and Operﬂlion Guide I-1
IEEJ-éx“
Dan miner ultillg 34, 4:
DATA INTERFACE
connecljuns 64
connecmrpin desn-iprions. cable 65
conneclar pins. mun-med 65
connecwr. R58] vs. V dc ll Pin 2| ofﬁlhlstﬂled) 64
Dat- lulu-face
m1; wiring fm puma-put syslemr wim mpenier usisunc: 23
cable wiring fer repener, illmmred 31
cable Wiring fur Iailﬂid links. illusuawd 29
Setting pal-amends 215
“i, “lied B
dﬂm, dlﬁned 3
“CI“. deﬁned 8
Dedbtl (dB). dcﬁned 8
Default setting
dxlx inleﬂnc: hand me 34
funny senings least by ler' command (able) 47
mum-lining HHT m 36
restoring (lNlT command) 46
See also individunlmmmanddtscnpnam
DEVICE mmnd (lwdlxﬂly DCE or CTS Key behavinr) 44
Dilplniﬁu
cummnnds 41
lletwmkrwide. Manning 51
selllp Elude (SETUP command) 49
using lllSiIE soflwm fur netwnrlrwide SB
DIEM
zhrm Dulplll Kama (ASENSE 0011111111111) 42
alarms (STAT cummlnd) 52
emineemr pm, dllBlosliC! (snow romnmnd) so
CPS hold n'nwr value (CTSHOLD command) 44
615 line rerpcnse inner vane (crs ccmmnnn) 43
data inm‘fau bllld I'll: (BAUD cammand) 42
dc inpnr/oncpnr linkages (snow conmnd) so
device behaviex (DEVICE command) 44
hopu'me setting (HOPI‘LMJE command) 45
maswr or mmnu openmm (MODE command] 47
new/01k nddmss (ADDR conumnd) 41
opening slams cnmmnnds 40
nwncr's message (OWM commmd) 4s
mum's mme (OWN commnld) 48
received data handling mode (DUFF command) 43
received dam timeout value (RXTUT command) 49
received Sign]! slung!!! (RSSI cummnd) 48
RF fnrwlrd mnpnl power (1-le wmmmd) 49
RF pmvermnplu. mu] measmed (SHOW commnnd) so
eignal—mmolse rand (SNR cmmnnnd) 51
simplzx or hilfmiplex cpemnun (511411131 command) so
skipped frequency mes (SKIP emnnmnd) 51
soﬁwm vminn, mmivn' (SREV ﬁlmmnd) 52
nempemmu. inland (TEMPce-nmmd) 52
mil receive frequency (RX rmnnund) 49
11le mm (delay lﬂnmnlmﬂ 33,41, 50
DLl'N'K tummlnd (let/dkphy bind riﬂe I]! Wm link) 44,
59, 60
DMGAP command (lel/dllplly time tn wlit between
chlruclm) 45
BS? (men-1 ﬂyul Plowing), Mun! s
075, deﬁned 9
mm ecmmnnd (eel rldh‘l dllgnosﬂcs type) 45, 59. 60
men FAILURE ermr mung: 37
Ennbl:
diagnnsllcs clinnnel by gmnnding Pin 23 011-1111 cable 35
Hm setup mode 36
incemnl R'l'U (RTU command) 49
master/lemma npenu'cn (MODE command) 47
nclwnrk-wide diagnnsncs‘ procedures 59
Semp mode (SETUP mmnmnd) 49
simplex/hilfdnplex upexaliml (swm command) so
skipped zone (SKIP cummand) 51
Sleep Mode 31
Equaunﬁnm deﬁned 9
Equipln-ll Lin 44. m
El’mr nun-gee
cn 1-1nndl-1e1d remind (1-11-11) 37
Fnde mugs... deﬁned 9
Feedlin.
selecdcn 15. 17
Fume, deﬁned 9
Frequemy hupnmg. dﬁned 9
Frequency line
deﬁned 9
mhle 51
Gnu (mdin dummzype) 45,110,111
aloe-r, 11-11
Enid-11nd Terminal (mm
command slnnnury. ub1e 38
commend In Waiver, illllstﬂtcd 25. 35
Canadian md sun-up as
emu-111g enmmznds 37
mm «images 37
kgybolrd commands 37
upemdannl seuinge,mh1e 36
m-uﬁﬁllinﬁon 36
setup display. illumlal 36
Bird"!!! Ilulv antral, dcﬂnul 9
Hopping, deﬁned 9
Hﬂpﬂme
pmmem‘ lab]: 46
setting 34
110m comm (la/dip“ impnme adding) 45
Host computer, deﬁned 9
I-2 MDS 9810124810 Installation and Opsratlon Guide
MDS 05-3301A01, Rev. A
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mum owner reﬂeclm' 16
amennn, dish 17
anlznm. omnidirectional 16
mlennA.Ylgi I6
bench test stamp 67
dun inurfwe cab]: wiring 28
data interface cable wiring fm npﬂtﬂ 31
dnu inn-flee cable wiring for tail
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File Type Extension : pdf
MIME Type : application/pdf
PDF Version : 1.3
Linearized : Yes
Create Date : 2001:06:12 08:17:44
Producer : Acrobat Distiller 4.0 for Windows
Author : jsoscia
Title : 46260.pdf
Modify Date : 2001:06:12 08:18:17-04:00
Page Count : 88

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GE MDS DS24810 User Manual 46260

GE MDS LLC 46260

8

FCC ID Filing: E5MDS24810

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