User's Manual

www.javad.com
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. The system built-in diagnostic features provide the information required to
monitor and maintain user’s communications link. The output transmit power, receive signal
strength (RSSI), antenna/feed line condition, and data decode performance will be 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.
1.2. Operating at Ultra High Frequency Band
LMR400 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
JAVAD GNSS’s radio modems suitable for both licensed and unlicensed markets.
3. Relatively low cost associated with installation equipment compared to the licensed
wireless bands, since no capital is required to purchase spectrum rights.
4. User-selectable channel spacing (25/12.5/6.25 kHz) is a feature, which makes LMR400
modems attractive for distributors and system integrators.