LMR400* User manual Version 1.0 Last Revised September 4, 2008 *Other names for marketing purposes are AW400Tx, AW400Jv 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.
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TABLE OF CONTENTS Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Terms and Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 FCC Class A Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1. Software Switching to Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.1.2. Hardware Switching to Maintenance Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1.3. Switching to Data Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.2. Networking Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.2.1. CONNECT . . . . . . . . . . . . . . . . . . .
PREFACE Thank you for purchasing this product. The materials available in this Manual (the “Manual”) have been prepared by JAVAD GNSS, Inc. (“JAVAD GNSS”) for owners of JAVAD GNSS products. It is designed to assist owners with the use of the LMR4001 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 USE – JAVAD GNSS receivers are designed to be used by a professional.
Preface Terms and Conditions 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.
Preface Regulatory Information FCC Class A Compliance warranty service centers. Users should review and heed the safety warnings in Chapter 5 on page 39. 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.
Preface Glossary Radio Apparatus Certificate Glossary μC AGC ALC AWGN BER BERT CLI CMOS CRC CTS CW DBPSK DC DCD DQPSK DSP DSR DTE DTR ETSI FCC FEC FIFO FSK GMSK GUI HPA I/O IF LED LLC LNA MAC MSK MTBF MTTR PA PCB www.javad.
Preface Related Information Technical Assistance PDA PLL PMP PSK PTP QAM QPSK RF RSSI RTK RTS RX SCADA SRAM TDD TDM TDMA TPC TPO TTL TX UART UHF UIM VSWR FIRMWARE SOFTWARE Personal Digital Assistant Phase-Lock Loop Point-to-Multipoint Phase Shift Keying Point-to-Point Quadrature Amplitude Modulation Quadrature Phase Shift Keying Radio Frequency Received Signal Strength Indication Real-time Kinematics Request To Send Receive(r) Supervisor Control and Data Acquisition Static Random Access Memory Time Divisi
Preface Related Information Reader Feedback Reader Feedback Your feedback about the supporting documentation helps us to improve the documentation with each revision. To forward your comments, do one of the following: • Send an email to support@javad.com. • Complete the Reader Comment Form at the back of this manual and mail or fax it according to the instructions at the bottom of the form. Please mark it Attention: Documentation Group. All comments and suggestions become the property of JAVAD GNSS. www.
Preface Related Information Reader Feedback 12 www.javad.
Chapter 1 PRODUCT FEATURES 1.1. Introduction LMR400 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. LMR400 is a half duplex, UHF Radio Transceiver developed to be integrated in a new JAVAD GNSS Receiver (TRIUMPH).
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; • “JRadio” – Windows based Unit Configuration and Maintenance Software Application running on a IBM PC compatible computer and connecting to the device over RS-232 interface. The unit’s user settings can be changed through the built-in Command Line interface (CLI), or through JRadio.
Product Features Modulation Technique 1.3. Modulation Technique The design will be based on high-level modulation techniques which include: 6.25 kHz 12.5 kHz 25 kHz DBPSK – Differential Binary Phase Shift Keying 2.4 kbps 4.8 kbps 9.6 kbps DQPSK – Differential Quadrature Phase Shift Keying 4.8 kbps 9.6 kbps 19.2 kbps D8PSK – Eight Phase Shift Keying 7.2 kbps 14.4 kbps 28.8 kbps D16QAM – Sixteen Quadrature Amplitude Modulation 9.6 kbps 19.2 kbps 38.
Product Features Operating Modes 1.5. Operating Modes The operating modes for LMR400 can be set through the CLI, or through JRadio. The following operating modes are available for LMR400: 1. Simplex operating modes (Simplex Base, Remote and Repeater) are developed primarily for GNSS applications. 2. Half Duplex Base, Remote and Repeater are the alternative to Simplex operating modes that are implemented based on half-duplex TDD protocol with dynamic bandwidth allocation. 3.
Product Features Security 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. www.javad.
Product Features Security 18 www.javad.
Chapter 2 GENERAL DESCRIPTION 2.1. Hardware Platform UHF module electronic hardware consists of Zero-IF RF Front-End and Digital Section based on BlackFin DSP micro processor. Both are located on a single PCB board. LMR400 radio modem utilizes ultra-wide dynamic range RF front-end developed specifically to provide the adjacent channel power ratio and adjacent channel selectivity levels required by FCC Part 90 standards.
2.2.2. RF Interface RF interface is a 50-ohm impedance matched standard MMCX connector as required by regulation. The RF interface can operate without damage to the unit under DC short and open conditions. The RF interface is protected against static discharge (15 kV air discharge, 8 kV contact discharge) and unloaded output. Switching from UHF module to cell module operation mode and vice versa is provided on RF interface in case if they share the same antenna. 2.2.3.
Chapter 3 COMMAND LINE INTERFACE The built-in user-friendly Command Line Interface (CLI) allows user to perform a full configuration of 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 reconfigure the unit’s settings.
Command Line Interface Command Line Interface Convention Software Switching to Maintenance Mode • Saving into the configuration files the configuration parameters modified through the CLI. 3.1. Command Line Interface Convention The following convention is implemented in AW400Tx Command Line Interface (CLI): • The Carriage Return/Line Feed (CR/LF, 0x0D/0x0A) is a command delimiter. • The Carriage Return/Line Feed (CR/LF, 0x0D/0x0A) is a reply delimiter followed by the “CLI>” prompt if Echo option is On.
Command Line Interface Command Line Interface Convention Hardware Switching to Maintenance Mode • Escape-Sequence: “+++”or “++++” with 20 ms guard time before and after the command characters • Escape-Acknowledge: “@00” 20 ms toggling on CTS control line needed to acknowledge switching from Data to Maintenance mode and vice versa. In Maintenance mode, the unit’s serial port must keep CTS line always active (see also “MPORT” on page 27). Note: “++++”used for Topcon products only. Happy Flow 1.
Command Line Interface Networking Commands Switching to Data Mode DTE must assert DTR signal active (0v level). By falling edge of DTR signal the unit goes to Maintenance mode and then sends Escape-Acknowledge to DTE („@00“). 20 ms toggling on CTS control line followed by Escape-Acknowledge response is needed to acknowledge switching from Data to Maintenance mode and vice versa.
Command Line Interface Networking Commands LINK To connect to the Base unit, through the remote unit, the parameter (Unit_Numb) must be equal to 0. To connect the local unit (Base or Remote), the parameter (Unit_Numb) must be equal to 0xFF. 3.2.2. LINK The LINK command is responsible for configuring radio’s operation mode. It has six parameters listed below.
Command Line Interface Networking Commands LINK Parameter Name ENROL Enrolls the secondary units into the wireless cluster. The enrolled unit’s 6-digit serial numbers are delimited by commas SN1, SN2, SN3 ... SN31, SN32. The number of units in the cluster does not exceed 32. The SN = 0 is reserved to clear the list of enrolled remote units.
Command Line Interface Serial Interfacing Commands DPORT 3.3. Serial Interfacing Commands 3.3.1. DPORT The DPORT is an object that responsible for data port interface configurations like Bit Rate, Flow Control,etc.
Command Line Interface Special Commands ALARM MPORT [Parameter Name] [Parameters List] [/?] Parameter Name RATE Note: Parameter List 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 • MPORT operates using 8 bits in one byte fixed (not configurable). • The radio modem with none-dedicated maintenance serial port must keep CTS line always active in MPORT mode (DP/MP is low). 3.4.
Command Line Interface Special Commands BOOT 3.4.2. BOOT The BOOT command is intended to reboot the unit using selected user settings.
Command Line Interface Diagnostics and Identification Commands SLEEP 3.4.5. SLEEP The SLEEP command determines the sleep mode parameters. 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.
Command Line Interface Diagnostics and Identification Commands STATE Product ID = 6 S/N = 000000 020303 Hardware = Ver. 1.0 Software = Ver. 1.0 Rev. B BootLoader = Ver. 1.0 Rev. A Figure 3-2. INFO Command Display 3.5.2. STATE The STATE command is used to check the state of the wireless link, the unit in the link, and the alarm control lines. To specify a radio unit (local or remote), the CONNECT command must be used in prior of STATE command using.
Command Line Interface Diagnostics and Identification Commands STATE 32 www.javad.
Chapter 4 TECHNICAL SPECIFICATIONS LMR400 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. The UHF module provides half-duplex communication with transmitter output power of 1 W (+30 dBm) in the frequency band 406-470 MHz with channel spacing 25 / 12,5 / 6,25 kHz.
4.1. Technical Specifications 4.1.1. Radio Transceiver Component Details Frequency Range 406.1 - 470 MHz (USA) 406.1-430; 450-470 MHz (Canada) Channel Spacing 25/12.5/6.25 kHz Carrier Frequency Stability ±1 ppm, compiles with FCC 2.1055, 90.213 Modulation GMSK/DBPSK/DQPSK/D8PSK/D16QAM Communication Mode Half duplex, simplex 4.1.2. Radio Transmitter Component Details Transmitter Output Power +15... +30 dBm in 1 dB step / 50 Ω Complies with FCC 2.
Technical Specifications Technical Specifications Modem Component Details Receiver Dynamic Range -119 to -52 dBm Adjacent Channel Selectivity 70 dB for 25 kHz Channel Spacing 60 dB for 12.5 kHz Channel Spacing 50 dB for 6.25 kHz Channel Spacing 4.1.4.
Technical Specifications External Connectors General 4.1.5. General Component Details Input Voltage 4.2 V ± 5 % Power Consumption (average) 4 W – transmit with 50% duty cycle (1 W TPO) 1 W – receive mode Operation Temperature -30oC - +50oC Storage Temperature -40oC - +80oC Dimensions L: 81 mm x W: 46 mm x H: 7 / 13 mm Weight 32 g Features: - DSP-Modem - Multi-Modulation Technologies - Zero-IF Technologies - 406.
Technical Specifications RF Connectors General PIN # Signal Designator Signal name Deascription Sleeps/wakes radio Receive only I/O TTL Input Comments 6 TTLI-1 SLEEP (3.0v) = Sleep Radio, (0v) = Wake Radio 7 DPORT-3 TTL Output MDM_GRN LED control line used by remotes to indicate that the remote has successfully acquired the signal from base station to indicate (0v) = Carrier detected (synchronized) (3.
Technical Specifications RF Connectors General 38 www.javad.
SAFETY WARNINGS General Warnings Note: To comply with RF exposure requirements, maintain at least 20 cm between the user and the UHF radio modem. Warning: The LMR400 is designed for intended for SCADA, outdoor telemetry applications and transmission / receiving of differential corrections and additional information by terrestrial radio channels between two GNSS receivers. This product should never be used: – Without the user thoroughly understanding this manual.
Safety Warnings Usage Warnings 40 www.javad.
UHF RADIO USAGE Many countries require a license for radio users (such as the United States). Be sure you comply with all local laws while operating a UHF radio. Surveying in RTK mode has made UHF the most popular choice for communications between base and rover receivers. Know the strengths and weaknesses of this technology to get the best use out of your receiver. The quality and strength of the UHF signals translates into range for UHF communications.
UHF Radio Usage 42 www.javad.
WARRANTY TERMS JAVAD GNSS electronic equipment are guaranteed against defective material and workmanship under normal use and application consistent with this Manual. The equipment is guaranteed for the period indicated, on the warranty card accompanying the product, starting from the date that the product is sold to the original purchaser by JAVAD GNSS’ Authorized Dealers1. During the warranty period, JAVAD GNSS will, at its option, repair or replace this product at no additional charge.
Warranty Terms 44 www.javad.
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