ArWest AW400T Series User manual

All contents in this manual are copyrighted by ArWest Communications.
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 ArWest Communications.
AW400Tx
User Manual
Version 1.0
Last Revised March 11, 2009

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TABLE OF CONTENTS
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Terms and Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
FCC Class A Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Canadian Emissions Labeling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
WEEE Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Related Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Return Material Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Chapter 1. Product Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
1.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
1.1.1. Operating at Ultra High Frequency Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.1.2. Modulation Technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.1.3. Media Access Control (MAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.1.4. Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.1.5. Management Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
1.1.6. Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Chapter 2. General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.1. Physical Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.1.1. Serial Data Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.1.2. Power Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.1.3. Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
2.1.4. Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Chapter 3. Command Line Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
3.1. Command Line Interface Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3.1.1. Software Switching to Maintenance Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
3.1.2. Hardware Switching to Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

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3.1.3. Switching to Data Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2. Networking Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.1. CONNECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.2. LINK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.3. Serial Interfacing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.1. DPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.2. MPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.4. Special Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.4.1. ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.4.2. BOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4.3. HELP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4.4. SAVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.4.5. SLEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.5. Diagnostics and Identification Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.5.1. INFO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.5.2. STATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Appendix A. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
A.1. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
A.1.1. Radio Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
A.1.2. Radio Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A.1.3. Radio Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A.1.4. Modem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A.1.5. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
A.1.6. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
A.1.7. Mechanical Properties For End-product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
A.2. External Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
A.2.1. Antenna Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
A.2.2. User Ports’ Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Appendix B. Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
B.1. General Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Appendix C. UHF Radio Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Appendix D. Warranty Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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PREFACE
Thank you for purchasing this product. The materials available in this Manual (the “Manual”)
have been prepared by ArWest Communications (“ArWest Communications”) for owners of
ArWest Communications products. It is designed to assist owners with the use of the AW400Tx
and 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 ArWest Communications. 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
ArWest Communications’ express written consent and may only use such information for the care
and operation of your AW400Tx. The information and data in this Manual are a valuable asset of
ArWest Communications and are developed by the expenditure of considerable work, time and
money, and are the result of original selection, coordination and arrangement by ArWest
Communications.
TRADEMARKS – AW400Tx, ArWest Communications®are trademarks or registered
trademarks of ArWest Communications. Windows®is a registered trademark of Microsoft
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
AW400Tx ARE PROVIDED “AS-IS.” THERE ARE NO OTHER WARRANTIES. ArWest
Communications DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR USE OR PURPOSE. ArWest Communications 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 AW400Tx. SUCH DISCLAIMED DAMAGES INCLUDE BUT ARE

Preface
Terms and Conditions
6
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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, ArWest
Communications 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, ArWest Communications SHALL HAVE NO LIABILITY FOR DAMAGES OR
OTHERWISE TO YOU OR ANY OTHER PERSON OR ENTITY IN EXCESS OF THE
PURCHASE PRICE FOR THE AW400Tx.
LICENSE AGREEMENT – Use of any computer programs or software supplied by ArWest
Communications or downloaded from a ArWest Communications website (the “Software”) in
connection with the AW400Tx constitutes 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 Software under the terms stated herein and in
any case only with a single AW400Tx or single computer. You may not assign or transfer the
Software or this license without the express written consent of ArWest Communications. This
license is effective until terminated. You may terminate the license at any time by destroying the
Software and Manual. ArWest Communications may terminate the license if you fail to comply
with any of the Terms or Conditions. You agree to destroy the Software and manual upon
termination of your use of the AW400Tx. All ownership, copyright and other intellectual property
rights in and to the Software belong to ArWest Communications. If these license terms are not
acceptable, return any unused software and manual.
CONFIDENTIALITY – This Manual, its contents and the Software (collectively, the
“Confidential Information”) are the confidential and proprietary information of ArWest
Communications. You agree to treat ArWest Communications' 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 AW400Tx. Such employees must also keep the Confidentiality Information confidential.
In the event you become legally compelled to disclose any of the Confidential Information, you
shall give ArWest Communications immediate notice so that it may seek a protective order or
other appropriate remedy.
WEBSITE; OTHER STATEMENTS – No statement contained at the ArWest Communications
website (or any other website) or in any other advertisements or ArWest Communications
literature or made by an employee or independent contractor of ArWest Communications
modifies these Terms and Conditions (including the Software license, warranty and limitation of
liability).
SAFETY – Improper use of the AW400Tx can lead to injury to persons or property and/or
malfunction of the product. The AW400Tx should only be repaired by authorized ArWest

Preface
Regulatory Information
FCC Class A Compliance
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Communications warranty service centers. Users should review and heed the safety warnings in
Chapter B on page 41.
MISCELLANEOUS – The above Terms and Conditions may be amended, modified,
superseded, or canceled, at any time by ArWest Communications. 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.
Regulatory Information
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 instruction 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.
Note:
Any changes or modifications to the equipment not expressly approved by the party responsible
for compliance 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.

DECLARATION of CONFORMITY
DECLARATION of CONFORMITY
According to ISO/IEC Guide 22 and EN45014
Manufacturer’s Name: ArWest Communications Corporation
Manufacturer’s Address: 1731 Technology Drive
San Jose, CA 95110
USA
declares, that the products
Product Name: AW400Tx OEM transceiver and AW400Rx OEM receiver
Product Number: 01-00012-200, 01-00011-110
Product Options: All
conforms to the following Product Specification:
EMC:
Directive 89/336/EEC EN 300 113 -1, EN 300 113 -2
EN 301 489 – 1, EN 301 489 – 5
Supplementary Information:
The product herewith complies with the essential requirements of the directive 1999/5/EC of the European
Parliament and of the Council of 9 March 1999 on radio equipment and
telecommunications terminal equipment (R&TTE) and the mutual recognition of their conformity and carries
the CE marking accordingly
1) These products were tested in a typical configuration with ArWest Communications Corporation products
2) AW400Rx is identical to AW400Tx, but without transmitting part
San Jose, December 25, 2008 Vladimir Zhukov, Product Regulations Manager
USA contact: ArWest Communications Corporation, 1731 Technology Drive, San Jose, CA 95110. Phone: +1 408 452 7719
Revision 1 0

TCB
GRANT OF EQUIPMENT
AUTHORIZATION
TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:
Intertek Testing Services NA, Inc.
70 Codman Hill Road
Boxborough, MA 01719
Date of Grant: 09/05/2008
Application Dated: 09/05/2008
JAVAD GNSS, Inc.
1731 Technology Drive
San Jose, CA 95110
Attention: Vladimir Zhukov , Dr.
NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and
is VALID ONLY for the equipment identified hereon for use under the
Commission's Rules and Regulations listed below.
FCC IDENTIFIER:
WJ4LMR400
Name of Grantee:
JAVAD GNSS, Inc.
E
q
ui
p
ment Class: Licensed Non-Broadcast Station Transmitte
r
Notes: UHF Radio module
Grant Notes FCC Rule Parts Frequency
Range (MHZ) Output
Watts Frequency
Tolerance Emission
Designator
BC 90 406.1 - 470.0 1.0 0.5 PM 3K00F1D
BC 90 406.1 - 470.0 1.0 0.5 PM 3K00G1D
BC 90 406.1 - 470.0 1.0 0.5 PM 6K00F1D
BC 90 406.1 - 470.0 1.0 0.5 PM 6K00G1D
BC 90 406.1 - 470.0 1.0 0.5 PM 12K0F1D
BC 90 406.1 - 470.0 1.0 0.5 PM 12K0G1D
Output is conducted. Transmitter module. The antenna(s) used for this transmitter must
be installed to provide a separation distance of at least 20 cm from all persons and
must not be co-located or operating in conjunction with any other antenna or
transmitter. Installers and end-users must be provided with antenna installation
instructions and transmitter operating conditions for satisfying RF exposure
compliance. Compliance is based on maximum antenna gain of 3.5 dBi.
BC: The output power is continuously variable from the value listed in this entry to 5%-10% of the value listed.

Certification Body xOrganisme de certification
Intertek Testing Services NA, Inc.
www.intertek-etlsemko.com
No. X51702
RADIO APPARATUS
CERTIFICATE LE CERTIFICAT D'APPAREIL
DE RADIO
CERTIFICATION No. X3504A-LMR400 No. DE CERTIFICATION
ISSUED TO/ DÉLIVRÉ A
ADDRESS/ADRESSE POSTALE X
JAVAD GNSS, Inc.
1731 Technology Drive
San Jose, CA
TYPE OF EQUIPMENT
GENRE DE MATÉRIEL XLand mobile transmitter and receiver (27.41-960 MHz)
TRADE NAME AND MODEL
MARQUE ET MODELE XJAVAD GNSS LMR 400, AW400Tx, AW400Jv
FREQUENCY RANGE
GAMME DE FRÉQUENCES RF POWER
PUISSANCE RF EMISSION DESIGNATION
DESIGNATION D'ÉMISSION SPECIFICATION
ISSUE/EDITION/DATE
406.1 - 430 MHz 1.0 W 3K00D1D, 3K00F1D
6K00D1D, 6K00F1D
12K0D1D, 12K0F1D
RSS-119 Issue 9 (June 2007)
450 - 470 MHz* 1.0 W 3K00D1D, 3K00F1D
6K00D1D, 6K00F1D
12K0D1D, 12K0F1D
RSS-119 Issue 9 (June 2007)
ANTENNA INFORMATION
RENSEIGNEMENTS SUR L'ANTENNA XExternal via MMCX connector
TEST LABORATORY
LABORATOIRE D'ESSAIS
ADDRESS/ADRESSE POSTALE
E-MAIL/COURRIER ÉLECTRONIQUE
TELEPHONE/TÉLÉPHONE
FAX/TÉLÉCOPIER
CN IF AVAILABLE/NC SI DISPONIBLE
X
NAME/NOM Intertek Testing Services NA, Inc.
1365 Adams Court
Menlo Park, CA 94025
650-463-2900
650-463-2910
NOTES
INFORMATION X*Operation in bands 462-463 MHz and 467-468 MHz is subject to compliance
with RSS-210.
Certification of equipment means only that the equipment has met the
requirements of the above noted specification. License applications,
where applicable to use certified equipment, are acted on accordingly
to the issuing office and will depend on the existing radio
environment, service and location of operation.
La certification du matériel signifie seulement que le matériel a satisfait
aux exigences de la spécification indiqée ci-dessus. Les demandes de
licences nécessaires pour utiliser du matériel certifié sont traitées en
conséquence par le bureau de délivrance et dépendront de l'environement
radio existant, du service et du lieu d'exploitation.
This certificate is issued on condition that the holder complies and
will continue to comply with the requirements of the radio standards
specifications and procedures issued by Industry Canada.
Le présent certificat est délivré à condition que le titulaire satisfasse et
continue de satisfaire aux exigences et aux procédures d'Industrie Canada.
DATE September 3, 2008 BY
Roland W. Gubisch
Certification Body Manager Directeur de organisme
de certification

Preface
Glossary
WEEE Directive
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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.
Glossary
µC Micro Controller
AGC Automatic Gain Control
ALC Automatic Output Power Level Control
AWGN Additive White Gaussian Noise
BER Bit Error Rate
BERT Bit Error Rate Test
CLI Command Line Interface
CMOS Complementary Metal-Oxide Semiconductor
CRC Cyclic Redundancy Code
CTS Clear To Send
CW Continues Wave
DBPSK Differential Binary Phase Shift Keying
DC Direct Current
DCD Data Carrier Detect
DQPSK Differential Quadrature Phase Shift Keying
DSP Digital Signal Processing
DSR Data Set Ready
DTE Data Terminal Equipment
DTR Data Terminal Ready

Preface
Glossary
WEEE Directive
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ETSI European Telecommunications Standardization Institute
FCC Federal Communications Commission
FEC Forward Error Correction
FIFO First-Input-First-Output
FSK Frequency Shift Keying
GMSK Minimum Shift Keying with Gaussian filtering
GUI Graphical User Interface
HPA High Power Amplifier
I/O Input/Output
IF Intermediate Frequency
LED Light Emitting Diode
LLC Logic Link Control
LNA Low Noise Amplifier
MAC Media Access Control
MSK Minimum-shift keying
MTBF Mean Time Between Failures
MTTR Mean Time To Repair
PA Power Amplifier
PCB Printed Circuit Board
PDA Personal Digital Assistant
PLL Phase-Lock Loop
PMP Point-to-Multipoint
PSK Phase Shift Keying
PTP Point-to-Point
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase Shift Keying
RF Radio Frequency
RSSI Received Signal Strength Indication
RTK Real-time Kinematics
RTS Request To Send
RX Receive(r)
SCADA Supervisor Control and Data Acquisition
SRAM Static Random Access Memory
TDD Time Division Duplex
TDM Time Division Multiplexing
TDMA Time Division Multiple Access
TPC Turbo Product Codes
TPO Transmitter Output Power
TTL Transistor-Transistor-Logic
TX Transmit(ter)

Preface
Related Information
Technical Assistance
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UART Universal Asynchronous Receiver/Transmitter
VHF Ultra High Frequency (300-3000 MHz)
UIM User Identify Module
VSWR Voltage Standing Wave Ratio
FIRMWARE A software program or a set of instructions embedded on a
hardware device
SOFTWARE Computer program for communication with a hardware device
Related Information
Technical Assistance
If you have a problem and cannot find the information you need in the product documentation,
contact your local dealer. Alternatively, request technical support using the ArWest
Communications World Wide Web site at: www.arwestcom.com
Return Material Authorization
Initially, the customer contacts support to report a problem. Please refer to support:
If support determines the problem cannot be resolved over e-mail/internet, it will authorize the
return of the unit for repair or replacement, depending on the nature of the problem.

Preface
Related Information
Return Material Authorization
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Chapter 1
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P
RODUCT
F
EATURES
1.1. Introduction
AW400Tx DSP based integrated UHF Modem is the single board OEM wireless transceiver
intended for SCADA, outdoor telemetry applications and transmission / receiving of differential
corrections and additional information by terrestrial radio channels between two GNSS receivers.
AW400Tx is a half duplex, UHF Radio Transceiver. It takes incoming data, modulates it with
GMSK, FSK, PSK or most spectrum efficient QAM modulation and transmits it at RF power
output levels from 15 dBm up to 30 dBm operating in UHF frequency band (406 to 470 MHz).
Figure 1-1. AW400Tx
The UHF transceiver is also capable of receiving RF signals through a 50 Ohm impedance
external antenna port. These signals are demodulated and output to the ArWest Communications
receiver.
AW400Tx 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:
• AW400Tx – UHF Radio Transceiver;

Product Features
Introduction
Operating at Ultra High Frequency Band
16
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• AWLaunch – Windows based Unit Configuration and Maintenance Software Application
running on a IBM PC compatible computer and connecting to the device over RS-232
interface or USB-to-Serial adapter.
The setting can be done through the built-in Command Line interface (CLI), or through the
configuration and maintenance application software running either on PC – AWLaunch.
The diagnostic feature of the AW400Tx system provides the information to monitor and maintain
user’s communications 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.
1.1.1. Operating at Ultra High Frequency Band
AW400Tx operates in UHF frequency band covering both licensed and unlicensed frequencies.
The following are its key benefits:
1. Operating in UHF frequency band will provide a non-line of sight connection.
2. User selectable operation mode (licensed or unlicensed mode) is a feature, which makes
AW400Tx system suitable for both licensed and unlicensed markets.
3. Relatively low cost associated with installation equipment compared to the licensed wire-
less bands, since no capital is required to purchase spectrum rights.
4. Single radio system covers the whole UHF frequency band from 406 to 470 MHz;
5. User selectable channel spacing (25 kHz, 20 kHz, 12.5 kHz or 6.25 kHz);
6. User selectable Output power level for Base (30mW/15dBm and 1W/30dBm);
7. 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.

Product Features
Introduction
Modulation Technique
17www.arwestcom.com
1.1.2. Modulation Technique
The design is based on high-level modulation techniques which include:
The following are its key benefits:
• Provides an excellent spectral efficiency (up to 2.3 bps/Hz for D16QAM), it is better than
any product available 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).
1.1.3. Media Access Control (MAC)
The following Media Access protocols are available for AW400Tx modem:
1. Simplex protocols (Simplex Base, Simplex Remote, and Repeater) are developed prima-
rily for GNSS applications.
2. Half Duplex protocols (Half Duplex Base, Half Duplex Remote and Repeater) are the
alternative to Simplex protocols that provide bidirectional link with the dynamic band-
width 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.
3. 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
Modulation/ Channel Spacing 6.25 kHz 12.5 kHz 20 kHz 25 kHz
DBPSK – Differential Binary Phase Shift Keying 2.4 kbps 4.8 kbps 7.5 kbps 9.6 kbps
DQPSK – Differential Quadrature Phase Shift Keying 4.8 kbps 9.6 kbps 15 kbps 19.2 kbps
D8PSK – Eight Phase Shift Keying 7.2 kbps 14.4 kbps 22.5kbps 28.8 kbps
D16QAM – Sixteen Quadrature Amplitude Modulation 9.6 kbps 19.2kbps 30 kbps 38.4 kbps
GMSK – Minimal Shift Keying with Gaussian Filtering 2.4 kbps 4.8 kbps 7.5 kbps 9.6 kbps
4FSK- Four Level Frequency Shift Keying N/A1
1. N/A – Not Applicable
9.6 kbps 15.0 kbps 19.2 kbps

Product Features
Introduction
Operating Modes
18
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clock, or by an external controller through the data interface control lines (RTS or DTR),
or by SLEEP input line (CMOS/TTL compatible input lines).
1.1.4. Operating Modes
The operating modes for AW400Tx can be set through the CLI, and/or through AWLaunch. The
following operating modes are available for AW400Tx:
1. 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.
2. 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.
1.1.5. Management Tools
The built-in management tools along with AWLaunch (configuration and monitoring software
application) will provide the following benefits:
1. Easy user’s interface for system configuration and monitoring using well developed CLI
or intuitive GUI.
2. An ability to monitor status, alarms and radio performance through the intuitive GUI.
3. Software upgrades and improvements can be downloaded from AWLaunch to the units
connected with PC/PDA.
1.1.6. Security
The system provides wireless media access protection as well as data encryption. The following
are its key features and benefits:
1. The Key Sequence generated by Pseudo-random generator scrambles the fully formatted
frame (including Frame’s CRC). This provides the wireless media access protection.
2. User selectable Frequency Hopping Pattern provides another level of the wireless media
access protection.
At the same time it allows operators to increase the number of links deployed in the same
location.

Chapter 2
19www.arwestcom.com
G
ENERAL
D
ESCRIPTION
2.1. Physical Interfaces
2.1.1. 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.
2.1.2. 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 impedance matched standard MMCX connector as
required by regulation.
2.1.3. Power Consumption
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).
Table 2-1. Power Consumption
Operating Mode / Description Consumption
Maximum for continuous transmission with 1W output power level1< 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 µW

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2.1.4. Antennas
Antenna type depends on the site requirements, and may be directional or omni-directional. Note
that to support 8 miles distance range between Base station and AW400Tx unit, an antenna mast
should elevate the base antenna a minimum of 20 feet above the average level of the terrain.
1. 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).
This manual suits for next models
3
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