Javad LMR400 User manual

All contents in this manual are copyrighted by JAVAD GNSS.
All rights reserved. The information contained herein may not be used, accessed, copied,
stored, displayed, sold, modified, published, or distributed, or otherwise reproduced without express
written consent from JAVAD GNSS.
LMR400
OEM Board
User manual
Version 3.0
Last Revised March 31, 2021

© JAVAD GNSS Inc., 2021
www.javad.com

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Table of Contents
Terms and Conditions................................5
Regulatory Information..............................6
FCC Class A Compliance.............................6
Canadian Emissions Labeling Requirements
6
WEEE Directive ...........................................7
About this Manual ......................................7
Screen Captures .........................................7
Technical Assistance ..................................7
Introduction ...............................................8
Product Features........................................8
Operating at Ultra High Frequency Band..9
Modulation Technique...............................9
Media Access Control (MAC).......................9
SPECIFICATIONS.........................................10
Operating Modes........................................10
Management Tools.....................................10
Security.......................................................10
Physical Interfaces .....................................10
Serial Data Interface...................................10
Power Interface ..........................................10
Power Consumption ..................................10
Antennas.....................................................11
General Specification.................................11
Features ......................................................11
Radio Transmitter Specifications ..............11
Radio Transceiver Specifications...............11
Radio Receiver Specifications....................11
Modem Specification .................................11
External Connectors...................................12
Compliance.................................................12
16-Lead Header Connector Pinout............13
Connection to the Evaluation Kit ..............14
Power connection ......................................14
Serial RS-232 connection...........................14
CONNECTION..............................................14
How to install LMR400................................15
Command Line Interface ...........................16
Command Line Interface Convention .......16
Soware Switching to Command Mode ...16

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Hardware Switching to Command Mode..17
Switching to Data Mode .............................17
CONNECT....................................................17
LINK.............................................................17
Networking Commands.............................17
Serial Interfacing Commands ....................19
DPORT.........................................................19
MPORT ........................................................19
Special Commands ....................................19
ALARM.........................................................19
BOOT...........................................................19
HELP............................................................19
SAVE ............................................................20
Diagnostics and Identification
Commands .................................................20
INFO ............................................................20
STATE ..........................................................20
General Warnings .......................................22
UHF RADIO USAGE......................................22

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Preface
Thank you for purchasing this product. The materials available in this Manual (the “Manual”) have been pre-
pared by JAVAD GNSS Inc. (“JAVAD GNSS”) for owners of JAVAD GNSS products. It is designed to assist owners
with the use of the LMR400and its use is subject to these terms and conditions (the “Terms and Conditions”).
Note: Please read these Terms and Conditions carefully.
TERMS AND CONDITIONS
COPYRIGHT – All information contained in this Manual is the intellectual property of, and copyrighted material
of JAVAD GNSS. All rights are reserved. You may not use, access, copy, store, display, create derivative works
of, sell, modify, publish, distribute, or allow any third party access to, any graphics, content, information or
data in this Manual without JAVAD GNSS’ express written consent and may only use such information for the
care and operation of your LMR400 . The information and data in this Manual are a valuable asset of JAVAD
GNSS and are developed by the expenditure of considerable work, time and money, and are the result of orig-
inal selection, coordination and arrangement by JAVAD GNSS.
TRADEMARKS – LMR400 , JAVAD GNSS® are trademarks or registered trademarks of JAVAD GNSS. Windows®
is a registered trademark of Microso Corporation. Product and company names mentioned herein may be
trademarks of their respective owners.
DISCLAIMER OF WARRANTY – EXCEPT FOR ANY WARRANTIES IN THIS MANUAL OR A WARRANTY CARD
ACCOMPANYING THE PRODUCT, THIS MANUAL AND THE LMR400ARE PROVIDED “AS-IS.” THERE ARE NO OTHER
WARRANTIES. JAVAD GNSS DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR USE OR PURPOSE. JAVAD GNSS AND ITS DISTRIBUTORS SHALL NOT BE LIABLE FOR TECHNICAL
OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN; NOR FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE OR USE OF THIS MATERIAL OR THE LMR400
. SUCH DISCLAIMED DAMAGES INCLUDE BUT ARE NOT LIMITED TO LOSS OF TIME, LOSS OR DESTRUCTION
OF DATA, LOSS OF PROFIT, SAVINGS OR REVENUE, OR LOSS OF THE PRODUCT’S USE. IN ADDITION, JAVAD
GNSS IS NOT RESPONSIBLE OR LIABLE FOR DAMAGES OR COSTS INCURRED IN CONNECTION WITH OBTAINING
SUBSTITUTE PRODUCTS OR SOFTWARE, CLAIMS BY OTHERS, INCONVENIENCE, OR ANY OTHER COSTS. IN ANY
EVENT, JAVAD GNSS SHALL HAVE NO LIABILITY FOR DAMAGES OR OTHERWISE TO YOU OR ANY OTHER PERSON
OR ENTITY IN EXCESS OF THE PURCHASE PRICE FOR THE LMR400 .
LICENSE AGREEMENT – Use of any computer programs or soware supplied by JAVAD GNSS or downloaded
from a JAVAD GNSS website (the “Soware”) in connection with the LMR400constitutes acceptance of these
Terms and Conditions in this Manual and an agreement to abide by these Terms and Conditions. The user is
granted a personal, non-exclusive, non-transferable license to use such Soware under the terms stated here-
in and in any case only with a single LMR400or single computer. You may not assign or transfer the Soware or
this license without the express written consent of JAVAD GNSS. This license is eective until terminated. You
may terminate the license at any time by destroying the Soware and Manual. JAVAD GNSS may terminate the
license if you fail to comply with any of the Terms or Conditions. You agree to destroy the Soware and manual
upon termination of your use of the LMR400 . All ownership, copyright and other intellectual property rights

6 www.javad.com
in and to the Soware belong to JAVAD GNSS. If these license terms are not acceptable, return any unused
soware and manual.
CONFIDENTIALITY – This Manual, its contents and the Soware (collectively, the “Confidential Information”)
are the confidential and proprietary information of JAVAD GNSS. You agree to treat JAVAD GNSS’ Confidential
Information with a degree of care no less stringent that the degree of care you would use in safeguarding your
own most valuable trade secrets. Nothing in this paragraph shall restrict you from disclosing Confidential
Information to your employees as may be necessary or appropriate to operate or care for the LMR400 . Such
employees must also keep the Confidentiality Information confidential. In the event you become legally com-
pelled to disclose any of the Confidential Information, you shall give JAVAD GNSS immediate notice so that it
may seek a protective order or other appropriate remedy.
WEBSITE; OTHER STATEMENTS – No statement contained at the JAVAD GNSS website (or any other website)
or in any other advertisements or JAVAD GNSS literature or made by an employee or independent contractor
of JAVAD GNSS modifies these Terms and Conditions (including the Soware license, warranty and limitation
of liability).
SAFETY – Improper use of the LMR400can lead to injury to persons or property and/or malfunction of the prod-
uct. The LMR400should only be repaired by authorized JAVAD GNSS warranty service centers. Users should
review and heed the safety warnings in Chapter A.
MISCELLANEOUS – The above Terms and Conditions may be amended, modified, superseded, or canceled, at
any time by JAVAD GNSS. The above Terms and Conditions will be governed by, and construed in accordance
with, the laws of the State of California, without reference to conflict of laws.
The following sections provide information on this
product’s compliance with government regulations.
FCC Class A Compliance
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruc-
tion manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area is likely to cause harmful interference
in which case the user will be required to correct the
interference at his own expense.
Any changes or modifications to the equipment not
expressly approved by the party responsible for com-
pliance could void your authority to operate such
equipment.
Canadian Emissions Labeling
Requirements
This Class A digital apparatus meets all requirements
of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la classe A respecte toutes
les exigences du Réglement sur le matériel brouilleur
du Canada.
REGULATORY INFORMATION

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WEEE Directive
The following information is for EU-member states
only:
The use of the symbol indicates that this product may
not be treated as household waste. By ensuring this
product is disposed of correctly, you will help prevent
potential negative consequences for the environment
and human health, which could otherwise be caused
by inappropriate waste handling of this product. For
more detailed information about the take-back and
recycling of this product, please contact your supplier
where you purchased the product or consult.
ABOUT THIS MANUAL
This Manual is designed to help you get familiar with
the LMR400 uzer interface and introduce you to the
JAVAD Mobile Tools main features.
Screen Captures
This Manual includes sample screen captures. Your
actual screen can look slightly dierent from the sam-
ple screen due to the receiver you have connected,
operating system used and settings you have speci-
fied. This is normal and not a cause for concern.
TECHNICAL ASSISTANCE
If you have a problem and cannot find the informa-
tion you need in the product documentation, contact
your local dealer. Alternatively, request technical sup-
port using the JAVAD GNSS World Wide Web site at:
www.javad.com.
To contact JAVAD GNSS Customer Support use the
QUESTIONS button available on the www.javad.com.

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Product Features
LMR400 DSP based integrated UHF Modem is the single board OEM wireless transceiver intended for SCADA,
outdoor telemetry applications and transmission / receiving of dierential corrections and additional in-
formation by terrestrial radio channels between two GNSS receivers. LMR400 is a half duplex, UHF Radio
Transceiver. It takes incoming data, modulates it with GMSK, FSK, PSK or most spectrum eicient QAM modu-
lation and transmits it at RF power output levels from 15 dBm up to 30 dBm operating in UHF frequency band
(406 to 470 MHz).
LMR400 OEM board
The UHF transceiver is also capable of receiving RF signals through a 50 Ohm impedance external antenna
port.
LMR400 delivers a reliable radio link at up to 38.4 kbps over the air for the 25 kHz channel spacing, 30 kpbs for
20 kHz, 19.2 kbps for 12.5 kHz, and 9.6 kbps for 6.25 kHz. The module requires a regulated DC voltage power
supply 4.2 V ± 5%.
The delivered product is a wireless system, which includes:
• LMR400 – UHF Radio Transceiver;
• AWLaunch – Windows based Unit Configuration and Maintenance Soware Application running on a IBM
PC compatible computer and connecting to the device over RS-232 interf ace or USB-to-Serial ada pter.
The setting can be done through the built-in Command Line interface (CLI), or through the configuration and
maintenance application soware running either on PC – AWLaunch.
The diagnostic feature of the LMR400 system provides the information to monitor and maintain user’s com-
munications link. The output transmit power, receive signal strength (RSSI), antenna/feedline condition, and
data decode performance are transmitted online without application interruption.
The product is designed for maximum performance and reliability even in the harshest environments. Plug
and play at its best, robust, withstanding the most adverse of conditions.
Description
INTRODUCTION

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Operating at Ultra High Frequency Band
LMR400 operates in UHF frequency band covering both licensed and unlicensed frequencies. The following
are its key benefits:
Operating in UHF frequency band will provide a non-line of sight connection.
User selectable operation mode (licensed or unlicensed mode) is a feature, which makes LMR400 system
suitable for both licensed and unlicensed markets.
Relatively low cost associated with installation equipment compared to the licensed wireless bands,
since no capital is required to purchase spectrum rights.
Single radio system covers the whole UHF frequency band from 406 to 470 MHz;
User selectable channel spacing (25 kHz, 20 kHz, 12.5 kHz or 6.25 kHz);
User selectable Output power level for Base (30mW/15dBm and 1W/30dBm);
Adaptive RF Power control used by Remotes minimizes the transmit power levels and interference to
co-channel and adjacent channel users. It also reduces the Remote’s power consumption.
Modulation Technique
The design is based on high-level modulation techniques which include:
Modulation/ Channel Spacing 6.25 kHz 12.5 kHz 20 kHz 25 kHz
DBPSK – Dierential Binary Phase Shi Keying 2.4 kbps 4.8 kbps 7.5 kbps 9.6 kbps
DQPSK – Dierential Quadrature Phase Shi Keying 4.8 kbps 9.6 kbps 15 kbps 19.2 kbps
D8PSK – Eight Phase Shi Keying 7.2 kbps 14.4 kbps 22.5kbps 28.8 kbps
D16QAM – Sixteen Quadrature Amplitude Modulation 9.6 kbps 19.2 kbps 30 kbps 38.4 kbps
GMSK – Minimal Shi Keying with Gaussian Filtering 2.4 kbps 4.8 kbps 7.5 kbps 9.6 kbps
4FSK- Four Level Frequency Shi Keying N/A 9.6 kbps 15.0 kbps 19.2 kbps
The following are its key benefits:
• Provides an excellent spectral eiciency (up to 2.3 bps/Hz for D16QAM), it is better than any product avail-
able on the market.
• FEC coding scheme used with GMSK and 4FSK modulations is based on Hamming Code known as Perfect
Codes. Although Hamming Codes are not very powerful, they are easy to implement and do not require
much DSP resources.
• More powerful Reed-Solomon FEC coding scheme used with ArWest proprietary frame format improves
the tolerance to interference and ensures the highest link quality at distances range higher than 8 miles (13
km) and roaming speeds of up to 60 mph (96 km/h).
Media Access Control (MAC)
The following Media Access protocols are available for LMR400 modem:
• Simplex protocols (Simplex Base, Simplex Remote, and Repeater) are developed primarily for GNSS ap-
plications.
• Half Duplex protocols (Half Duplex Base, Half Duplex Remote and Repeater) are the alternative to Simplex
protocols that provide bidirectional link with the dynamic bandwidth allocation.
Note: Repeater decreases the user data rate. The user data rate in the link with the repeaters is equal to C /[(n+1]), where C is a link
throughput determined by the modulation technique and n is a number of repeaters in the chain. Half duplex Base, Half duplex
Remote and repeater are not supported in current release.
• Sleep mode is an investment provided by MAC sub-layer that provides additional power saving. The
wakeup from Sleep mode is user selectable either by an internal real-time clock, or by an external con-

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SERIAL DATA INTERFACE
The serial asynchronous interface allows connection to external serial devices. It is shared between user data
and unit’s command/status information. All commonly supported baud rates, parity and bit configurations
are available up to 115.2 kbps.
POWER INTERFACE
The power interface allows connection to an unregulated DC power source. The DC power source (third-party
or user supplied) must provide DC power of 4.2V±5% DC. The standalone unit’s RF interface is a 50-ohm im-
pedance matched standard MMCX connector as required by regulation.
POWER CONSUMPTION
troller through the data interface control lines (RTS or DTR), or by SLEEP input line (CMOS/TTL compatible
input lines).
Operating Modes
The operating modes for LMR400 can be set through the CLI, and/or through AWLaunch. The following oper-
ating modes are available for LMR400 :
• The sleep mode has automatic transmitter activation by an internal real-time clock, or by an external
controller through the data interface control lines (RTS and DTR), or by the triggering of the external Sense
Inputs.
• Adaptive RF Power control used by Remotes minimizes the transmit power levels and interference to
co-channel and adjacent channel users. It also reduces the Remote’s power consumption.
Management Tools
The built-in management tools along with AWLaunch (configuration and monitoring soware application)
will provide the following benefits:
• Easy user’s interface for system configuration and monitoring using well developed CLI or intuitive GUI.
• An ability to monitor status, alarms and radio performance through the intuitive GUI.
• Soware upgrades and improvements can be downloaded from AWLaunch to the units connected with
PC/PDA.
Security
The system provides wireless media access protection as well as data encryption. The following are its key
features and benefits:
• The Key Sequence generated by Pseudo-random generator scrambles the fully formatted frame (includ-
ing Frame’s CRC). This provides the wireless media access protection.
• User selectable Frequency Hopping Pattern provides another level of the wireless media access protec-
tion.
At the same time it allows operators to increase the number of links deployed in the same location.
Physical Interfaces
SPECIFICATIONS

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Power consumption of the UHF radio modem at continuous transmission mode with 1W output power level is
less than 4500mW (refer to Table 2-1 for details).
Operating Mode / Description Consumption
Maximum for continuous transmission with 1W output power level < 4500 mW
Maximum for Rx Full Operation Mode < 2000 mW
Average for Operation Mode with 30% Transmission duty cycle < 2000 mW
Average for Operation Mode with 50% Transmission duty cycle < 3000 mW
Sleep Mode 300 mW
Standby Mode, ordered by SLEEP input pin 500 mW
Note: The supply voltage (pins 15 and 16 in user interface connector,) must be 4.2 to 4.5VDC to provide RF output power >500mW
(licensed operation mode).
ANTENNAS
Antenna type depends on the site requirements, and may be directional or omni-directional. Note that to sup-
port 8 miles distance range between Base station and LMR400 unit, an antenna mast should elevate the base
antenna a minimum of 20 feet above the average level of the terrain.
GENERAL SPECIFICATION
• Input Voltage: 4.2 V ± 5 %
• Power Consumption (average):
3 W – transmit with 50% duty cycle (1 W TPO)
1 W – receive mode
• Temperature:
Operation -40 oF ... 140 oF (-40 oC ... +60 oC)
Storage -40 oF... 176 oF (-40 oC ... +80 oC)
• Dimensions:
3.18 x 1.80 x 0.29/0.37 in (80.8 x 45.7 x 7.4/9.4 mm)
• Weight: 0.09 lbs (41 g)
FEATURES
• DSP-Modem
• Multi-Modulation Technologies
• Zero-IF Technologies
• Up to 115200 bps Data Rate
• Embedded Firmware Compensation for Opera-
tion and Extremely Low at High Temperatures
• Compact Design
RADIO TRANSMITTER SPECIFICATIONS
• Transmitter Output Power: +15... +30 dBm in 1
dB step / 50 Ω
• Carrier Power Stability: +1 dB / -2 dB
RADIO TRANSCEIVER SPECIFICATIONS
• Frequency Range:
LMR 400: 406 - 470 MHz
LMR400 EXT: 360 - 470 MHz
• Channel Spacing: 25/20/12.5/6.25 kHz
• Carrier Frequency Stability: ±1 ppm
• Modulation: GMSK/4FSK/DBPSK/DQPSK/
D8PSK/D16QAM
• Communication Mode: Half duplex, simplex
RADIO RECEIVER SPECIFICATIONS
• Receiver Sensitivity for DBPSK (BER 1x 10-4):
-113 dBm for 25 kHz Channel Spacing
-113 dBm for 20 kHz Channel Spacing
-114 dBm for 12.5 kHz Channel Spacing
-114 dBm for 6.25 kHz Channel Spacing
• Receiver Sensitivity for DQPSK (BER 1x 10-4):
-110 dBm for 25 kHz Channel Spacing
-110 dBm for 20 kHz Channel Spacing
-111 dBm for 12.5 kHz Channel Spacing
-111 dBm for 6.25 kHz Channel Spacing
• Receiver Dynamic Range: -119 to -10 dBm
MODEM SPECIFICATION
• Interface DSP: UART (serial port)
• Interface Connector: 16-lead Connector
• Data Speed of Serial Interface:
9600 - 115200 bps
• Data Rate of Radio Interface (25 kHz Channel Spacing)
9600 bps – DBPSK/GMSK
19200 bps – DQPSK
28800 bps – D8PSK
38400 bps – D16QAM
• Data R ate Radio Interface (20 kHz Channel Spacing)

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7500 bps – DBPSK/GMSK
15000 bps – DQPSK
22500 bps – D8PSK
30000 bps – D16QAM
• Data Rate Radio Interface (12.5 kHz Channel
Spacing)
4800 bps – DBPSK/GMSK
9600 bps – DQPSK
14400 bps – D8PSK
19200 bps – D16QAM
• Data Rate Radio Interface (6.25 kHz Channel
Spacing)
2400 bps – DBPSK
4800 bps – DQPSK
7200 bps – D8PSK
9600 bps – D16QAM
• Forward Error Correction (FEC): Reed-Solomon
Error Correction
• Data scrambling: Yes
EXTERNAL CONNECTORS
• RF Connector: J2 is Antenna Input / Output Con-
nector: MMCX RIGHT ANGLE PCB JACK, AMPHE-
NOL P/N 908-24100.
• Main Connector - 285209LF CONN, 16LEAD,
HEADER, 5.84CONT COMM CON INC 3913-16G2
COMPLIANCE
• FCC Part 90
• Industry Canada RSS-210
• ETSI EN 300 113-2, ETSI EN 301 489-1,
ETSI EN 301 489-5
The built-in user-friendly Command Line Interface
(CLI) allows user to perform a full configuration of
12.4 0.490
7.4 0.290 9.4 0.370
Connector, 16-Lead,Header
80.8 3.180
45.7 1.800
MMCX Connector
Dimension in mm [inch].
16-Lead Header Connector

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PIN # Signal Desig-
nator
Signal
name
Description I/O Comments
1 GND GND Ground - Signal and Chassis Ground
2 DSP UART 1 TXD Transmitted
Data TTL Input Serial Data Input
3 DSP UART 2 RXD Received Data TTL Out-
put Output for received serial data
4 DPORT5 DTR or DP/
MP
Data Terminal
Ready TTL Input
Control line can be used as a backup method for entering
Command mode:(0V) – Maintenance Mode; (3.3V) – Data
Mode
An internal 100K pull-up enables Data Mode if this signal is le
unconnected. Maintenance Mode is also accessible by trans-
mitting an escape sequence.
5 DPORT1 CTS Clear to Send TTL Out-
put
Used to control transmit flow from the user to the radio: (0V)
– Transmit buer not full, continue transmitting (3.3V) – Trans-
mit buer full, stop transmitting
6 TTLI1 SLEEP
Sleeps/wakes
radio Receive
only
TTL Input
In sleep mode, all radio functions are disabled consuming
less than 50µA. An internal 10K pull-down wakes up the
radio if this signal is le unconnected. At wake up, any user
programmed configuration settings are refreshed from flash
memory, clearing any temporary settings that may have been
set:(3.3V) – Sleep Radio; (0V) – Wake Radio. As an option could
be used as TTL Input Line 1.
7 DPORT3 MDM_GRN Data Carrier
Detect
TTL Out-
put
Used by remotes to indicate that the remote has successfully
acquired the signal from base station:
(0V) 1 – Carrier detected (synchronized)(3.3V) 0 – No carrier
detected (not synchronized)
8 DPORT4 RTS Request to
Send TTL Input
Gates the flow of receive data from the radio to the user on or
o. An internal 10K pull-down enables data receive if this sig-
nal is le unconnected. In normal operation, this signal should
be asserted:(0V) – Receive data (RxD) enabled (3.3V) – Receive
data (RxD) disabled
9 DPORT2 DSR Data Set
Ready
TTL Out-
put
Used to control transmit flow from the user to the radio:(0V)
1 – Receive buer has data to transfer; (3.3V) 0 – Receive buer
is empty
10 RES CONT RESCONT Reset the
radio TTL Input Reset the radio by shortening this pin to the ground.
11 TTLO1 TTLOUT1 TTL Output
Line 1
TTL Out-
put Reserve line
12 TTLO2 TTLOUT2 TTL Output
Line 2
TTL Out-
put Reserve line
13 GND GND Ground - Signal and Chassis Ground
14 TTLI2 TTLIN TTL Input line TTL Input An internal 100K pull-up resistor is applied.
15 VCC36 PWR Power Supply External Regulated positive 4.2V DC from ext. Power Supply.
16 VCC36 PWR Power Supply External Regulated positive 4.2V DC from ext. Power Supply.
16-LEAD HEADER CONNECTOR PINOUT

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Connection to the Evaluation Kit
The LMR400 board can be connected directly to Evaluation Kit (p/n 99-571010-01) by its 16-Lead Header
Connector, ECS Corp., as it shown on the figure below.
LMR400 board connected to Evaluation Kit
The LMR400 may be connected to external antenna using TNC to MMCX RA Antenna cable (included in the Kit).
Power connection
The LMR400 powered through Evaluation Kit and Power Cable (included in Kit). The Banana plugs of power
cable may be connected to any available laboratory power supply, battery or other power source with power
parameters, suitable for particular LMR400 power specifications.
Note: Evaluation Kit does not provide any over-voltage protection. Connecting Evaluation Kit to voltage exceeding particular
LMR400 power voltage range may cause damage of LMR400 and Evaluation Kit board.
Note: Evaluation Kit provides reverse polarity protection only in voltages range, specified for particular LMR400.
Serial RS-232 connection
A standard Null-Modem cable (included in Kit) with DB-9 Female connectors on both ends may be used to
connect PC COM_X port with Serial port on adapter.
Adapter’s DB-9 male connector external view and pinout is shown on the figure below.
DB-9 Male connector
DB-9 Male Connector Specification
Pin Signal Name Dir Description
1 - - Not used
2RXD I Receive Data
3TXD O Transmit Data
4DTR O Data Terminal Ready
5 GND - Signal Ground
6 DSR I Data Set Ready
CONNECTION

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Pin Signal Name Dir Description
7RTS O Request To Send
8CTS I Clear To Send
9 - - Not used
Please, refer to particular external device Serial port specification to select and use right Serial cable for prop-
er connection.
HOW TO INSTALL LMR400
Solder
Solder

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the unit and read the statistics and alarm status. It is
the most powerful tool to configure the unit. It makes
changes to all possible settings that system will not
be able to determine automatically.
The CLI commands allow user to configure and recon-
figure the unit’s settings. The user configuration pa-
rameters that could be changed through the CLI are:
• Data Port Settings
Baud Rate
Data Bits (8, 7)
Parity (Odd, Even, None)
Flow control (None or RTS/CTS)
• Alarm Settings
• Radio Operation Modes
• Sleep modes
On/O
Activate by internal real-time clock
Activate through RTS/CTS lines
Activate by external sense lines
Activate by any combination of the parameters
mentioned before
Note: The unit’s configuration that is set or modified through
the CLI will be lost aer unit’s reboot, unless the saving opera-
tion is used to store a new setting in the unit’s configuration file.
The CLI commands also provide filing operations,
which include:
• Downloading
Unit’s Configuration files
Soware Images
• Uploading Unit’s Configuration files
• Saving into the configuration files the configura-
tion parameters modified through the CLI.
Command Line Interface Convention
The following convention is implemented in LMR400
Command Line Interface (CLI):
• TheCarriageReturn/LineFeed(CR/LF,0x0D/0x0A)
is a command delimiter.
• TheCarriageReturn/LineFeed(CR/LF,0x0D/0x0A)
is a reply delimiter followed by the “CLI>” prompt
if Echo option is On.
• The Carriage Return/Line Feed (CR/LF,
0x0D/0x0A) is a reply delimiter if Echo option is O
(default option).
• The 2-digit number followed by “@” in the unit’s
reply indicates the error code (refer to Table 3-1 for
description), if Echo O is selected, otherwise the
error message is displayed.
• A successfully performed command is replied by
@00 code, if Echo O is selected, otherwise the set
value is replied.
• A command with the certain [Parameter Name]
and blank [Parameter List] displays the current
settings for a given parameter.
• To set the mode ordered by CLI commands as
permanent User Setting (the setting automatically
selected for the boot-up unit) the SAVE command
must be asserted.
• [/?] orders to show the help information for the
given command.
• Commands are not key sensitive; small, none
capital characters can be used to enter CLI com-
mands.
Command Line Interface Error Codes
Error Code Short Description
0x01 Command Syntax Error. A command followed by
“/?” displays a command usage.
0x02
The parameter has a format error. A command
with the certain [Parameter Name] followed
by “/?” displays the format and range of the
variable.
0x03
The parameter is out of allowed range. A
command with the certain [Parameter Name]
followed by “/?” displays the format and range
of the variable.
0x04
The command is not valid for specific radio
model. To display the list of available com-
mands, the HELP command must be used.
0x05 Unspecified Error
Soware Switching to Command
Mode
On power-up the radio modem is in data-mode. To
switch to command mode the special byte-sequenc-
es with special meanings are used:
• Escape-Sequence: “+++” with 20 ms guard time
before and aer the command characters
• Escape-Acknowledge: “@00<CR><LF>”
20 ms toggling on CTS control line needed to ac-
knowledge switching from Data to Command mode
and vice versa.
COMMAND LINE INTERFACE

www.javad.com 17
Happy Flow
• In data-mode the unit starts looking for the Es-
cape-sequence if there is no data from DTE (Data
Terminal Equipment) for more than 20 ms (Start
Guard Time).
• If the unit detects the Escape-Sequence:
• The transmitter continues sending over the air
the data received from DTE before Escape- Se-
quence and buers the data from DTE;
• The Receiver immediately stops forwarding to
DTE the data received over the air and buers it
instead.
• The radio unit waits for 20 ms and then sends Es-
cape-Acknowledge to DTE if there is no data from
DTE during 20 ms of Stop Guard Time.
• The unit goes to command mode and discards
Escape-Sequence from input buer. The modem
is immediately ready to receive commands. At the
same time it continues buering the data received
over the air since step 2.
Escape-Sequence in Data
During its waiting in step 3, the unit receives data
from DTE:
• The unit sends buered Escape-Sequence from
DTE to the air;
• The unit sends all buered data received from
the air since step 2 to DTE and stays in data-mode
(i.e. transmits data received from DTE over the air
– including the just received, unexpected, data and
forwards data received over the air to DTE.)
Hardware Switching to Command
Mode
As alternative to Soware Switching, the switching
through the MP/DP (Data Terminal Ready, DTR) con-
trol line can be used. To set Command Mode, the DTE
must assert DTR signal active and then passive. By
falling edge of DTR signal the unit goes to command
mode and then sends Escape- Acknowledge to DTE
(“@00<CR><LF>”).
20 ms toggling on CTS control line needed to ac-
knowledge switching from Data to Command mode
and vice versa.
Note: The powered up radio modem by default goes to Data
Mode regardless of DTR control line polarity.
Switching to Data Mode
• DTE sends the CLI command “DATA-
MODE<CR><LF>” to the unit.
• Unit answers with Escape-Acknowledge
(„@00<CR><LF>“) and immediately goes to data-
mode, so that the DTE can start sending data as
soon as the Escape-Acknowledge has been re-
ceived.
• If no valid CLI commands received from DTE
within 1 minute, the unit will automatically switch
back to data-mode.
CONNECT
To connect the radio unit through the local main-
tenance serial port or to establish the link with the
remote unit in the Point-to-Multipoint network, the
CONNECT command must be used.
CONNECT [Unit_Numb] [/?]
Where the Unit_Numb is an assigned decimal num-
ber for the unit to be connected. To get the complete
unit list, the CONNECT command must be used with
no parameter :
Unit Serial Number Connect
BS 003578659922
1 003574459923 C
To disconnect from the remote unit and connect to
the local unit, the parameter (Unit_Numb) must be
equal to 0x00.
LINK
The LINK command is responsible for configuring ra-
dio’s operation mode. It has six parameters listed be-
low.
LINK [Parameter Name] [Parameters List] [/?]
Networking Commands

18 www.javad.com
Parame-
ter Name Parameter List
CHAN
1Selects the Channel Number: CN = 1 to 32.
Each Channel is defined by three parameters: Car-
rier Frequency, Channel
Spacing and Allowed Output Power level.
CN = 0 is reserved to set up the Frequency Auto-
matic scanning mode.
The LINK CHAN 0 command also forces the radio
modem to continue scanning
starting from the channel currently selected by
automatic scanning algorithm.
In Automatic scanning mode, to check the channel
currently used or scanned,
the STATE command must be used
FEC
0 – Disable Forward Error Correction, a default
setting (see note below)
1 – Enable Forward Error Correction (see note
below)
FHOP
(1 – 32) – Frequency Hoping Pattern number LINK
FHOP command can be processed only if the
Channel Map (up to 32 channels) is defined by
AWLaunch or by MAP command.
MOD
1 – DBPSK
2 – DQPSK, a default settings 3 – D8PSK
4 – D16QAM
5 – GMSK
6 – 4FSK
PWRB /
PWRW
0 – Automatic Transmit Power control, a default
setting for Remote units (15 – 30) / (30 – 1000) – RF
output Power in dBm / mW
PROT
1 – “Simplex Receiver” a default setting (see note
below) 2 – “Simplex Transmitter”
3 – “Half Duplex” Base (reserved)
4 – “Half Duplex” Repeater (reserved) 5 –
Not used
6 – Not used
7 – “TRMB Receiver” (used with GMSK mod-
ulation)
8 – “TRMB Transmitter” (used with GMSK
modulation)
9 – “Transparent w/EOT” Repeater (used
with GMSK and 4FSK) 10 – “Repeater” (ArWest
Proprietary Simplex)
11 – “TRMB Repeater” (used with GMSK
modulation)
12 – “Transparent w/EOT” Receiver (used
with GMSK and 4FSK) 13 – “Transparent w/EOT”
Transmitter (used with GMSK and 4FSK) 14 – “STL
Receiver” (used with 4FSK modulation)
15 – “STL Transmitter” (used with 4FSK modula-
tion) 16 - Not used
17 - “Fast Async” Receiver (used with GMSK and
4FSK) 18 - “Fast Async” Transmitter (used with
GMSK and 4FSK)
19 - “Transparent w/EOT Character” Receiver (used
with GMSK and 4FSK) 20 - “Transparent w/EOT
Character” Transmitter (used with GMSK and 4FSK)
PWRB /
PWRW
(15 – 30) / (30 – 1000) – RF output Power in dBm /
mW
RTR
0 -No Retransmission in the wireless cluster
1 – There is Repeater in the wireless cluster, valid
for Base only
SCRAM 0 – No Scrambling (a default setting) (1 – 255)
1 – Seed for Pseudo-Random Sequence Generator
FEC
0 – Disable Forward Error Correction (FEC), a de-
fault setting
1– Enable Reed-Solomon encoding
CHAR
(0 – 255) – defines the ASCI code of the symbol
indicating the end of a data chunk of “Transparent
w/EOT Character” protocol.
ADDR Indicates the number of address bytes of “STL”
protocol’s data frame.
CLKCORR
0 – Disables Clock Correction algorithm of STL
protocol 1- Enables Clock Correction algorithm of
STL protocol.
LINK FHOP and LINK CHAN commands can be pro-
cessed only if Frequency Map is defined. Auto-
scanning may not start automatically, only when
scanning requested via CLI command (see
LINK CHAN 0 and STATE commands). The frequency
defined by CHAN parameter is not valid if Frequency
Hoping mode is selected. The radio link with GMSK
and 4FSK modulations are used by Non-ArWest pro-
tocols only. Enabling FEC via LINK FEC command pro-
vides dierent options for dierent protocols:
• Enables Read-Solomon encoding for frame’s
header used by ArWest proprietary protocols
• Enables Hamming encoding for Trimble and Pa-
cific Crest compatible protocols
• Enables Trellis encod-
ing for Satel compatible protocol
For JAVAD GNSSproprietary protocols, the
Read-Solomon FEC encoding is always applied to
data payload.
• “Half Duplex” Base and “Half Duplex” Remote
protocols are not supported in current release.
LINK ADDR and LINK CLKCORR commands are not
recommended for using on site of End Users.

www.javad.com 19
Serial Interfacing Commands
DPORT
The DPORT is an object that responsible for data port
interface configurations like Bit Rate, Flow Control,
etc.
DPORT [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
RATE
0 – Maintenance Port baud rate, a default
setting 1 – 1200 baud
2 – 2400 baud
3 – 4800 baud
4 – 9600 baud
5 – 14400 baud
6 – 19200 baud
7 – 38400 baud
8 – 57600 baud
9 – 115200 baud, a default setting
BITS Set number of bits in one byte (8 or 7) 8 is a
default setting
PARITY
0 – None, a default setting
1 – Odd
2 – Even
FLOW 0 – None, a default setting 1 – Not used
2 – HW (RTS/CTS)
MPORT
The MPORT is an object that responsible for main-
tenance serial port interface configurations such as
data rate and number of bits in a byte.
MPOR T [Parameter Name] [Parameters List] [/?]
Parameter
Name Parameter List
RATE
0 – Auto.
1 – 1200 baud
2 – 2400 baud
3 – 4800 baud
4 – 9600 baud
5 – 14400 baud
6 – 19200 baud
7 – 38400 baud
8 – 57600 baud
9 – 115200 baud, a default setting
Note: JAVAD GNSSradio modem’s does not support data flow
and parity on the maintenance serial port.
Note: MPORT operates using 8 bits in one byte fixed (not config-
urable).
Note: The radio modem with none-dedicated maintenance se-
rial port must keep CTS line always active in MPORT mode (DP/
MP is low).
Special Commands
ALARM
The ALARM command is intended to set up the alarm
indication mode and alarm control lines’ behavior.
ALARM [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
TTL1
0– TTL_OUT1 = logic “1”
1– TTL_OUT1 = TTL_IN, received from re-
mote unit (default settings)
TTL2
0– TTL_OUT2 = logic “1”
1– TTL_OUT2 = TTL_IN2, received from
remote unit (default settings)
2 – TTL_OUT2 = SYNC Loss
3 – TTL_OUT2 = BER > BERTH or SYNC Loss
BERTH
1– BER Threshold >10 –3 (default threshold
level for BER)
2 – BER Threshold BER >10 –2
The Alarm LED must indicate the SYNC Loss and BER
exceeding the defined threshold.
Note: The BERTH 1 / 2 is optional for TTL2 = 3 condition, other-
wise the BERT alarm is o
BOOT
The BOOT command is intended to reboot the unit
using selected user settings. Two options are avail-
able, to use the default user settings defined by deal-
er or to use the settings defined by end-user
BOOT [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
CFG 0 – selects the default user settings
1 – selects user modified settings
The BOOT command with no parameters selects the
user settings defined by the prior “parameterized”
BOOT commands.
HELP
The HELP command types the list of all available
commands:
HELP – Display this usage
BOOT – Reboot the unit
LINK – RF Link Operation Mode
DPORT – Data Port Configuration
MPORT – Maintenance Port
Configuration

20 www.javad.com
ALARM – Alarm Indication and Alarm
Control Configuration
SLEEP – Sleep Mode Configuration
CONNECT – Connect to Specified Unit
STATE – Display Status and Statistics
SAVE – Save Current Configuration into
Configuration File
INFO – Display Product ID along with
Hardware/Software Versions
DATAMODE – Exit Maintenance Mode
[COMMAND] /? – Display Command Usage
SAVE
The SAVE command is intended to store the unit’s cur-
rently used configuration into the User Configuration
file.The configurationstoredinthe UserConfiguration
file is activated by automatically aer unit’s reboot.
SLEEP
The SLEEP command determines the sleep mode pa-
rameters. The sleeping LMR400 can be activated by
real-time CLK, DTR/RTS lines, and command received
through TTL inputs. The user can select one, two, or
all three conditions.
SLEEP [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
CLK
0 – Do not activate by internal real-time
clock
(1 – 255) – Activate by internal real-time
clock aer 100 to 25500 msec of sleeping
HW 0 – Do not activate through DTR/RTS lines
1 – Activate through DTR/RTS lines
TTL 0 – Do not activate by external sense lines
1 – Activate by external sense lines
GTS
0 – Disable Sleep mode (default)
(1 – 255) – Go to sleep mode if there is no
activity in 10 to 2550 msec
Diagnostics and Identification
Commands
INFO
The INFO command is used to retrieve the Radio ID
along with its Hardware version, the loaded real-time
soware version/revision and BootLoader’s version/
revision.
INFO [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
ID Product ID
SN Six bytes Serial Number (SN)
HW 1.0 – hardware version in numeric “Major.
Minor” format
SW
Ver. 1.0 Rev. A – displays soware’s ver-
sion in numeric “Major.Minor” format and
revision in numeric format (range from 01 to
99) for engineering releases and alphabetic
format (A to Z) for manufacturing releases
BL
Ver. 1.0 Rev. A – displays BootLoader’s ver-
sion in numeric “Major.Minor”format and
revision in numeric format (range from 01 to
99) for engineering releases and alphabetic
format (A to Z) for manufacturing releases
The INFO command without Parameter Name indi-
cates all values:
LMR400 UHF Radio Modem.
Product ID = 33
S/N = 000000 020303
Hardware = Ver. 1.0
Software = Ver. 1.8 Rev. 14
BootLoader = Ver. 2.0 Rev. 02
STATE
The STATE command is used to check the state of the
wireless link, the unit in the link, and the alarm con-
trol lines.
STATE [Parameter Name] [Parameters List]
[/?]
Parameter
Name Parameter List
TTL1 0/1 – State of TTL_IN1 line
TTL2 0/1 – State of TTL_IN2 line
RSSI -52 to -116 dBm – Indicates the Receive
Signal Strength in dBm