User's Manual

OG_LMD-400-R_v09e Circuit Design, Inc.
3
OPERATION GUIDE
GENERAL DESCRIPTION & FEATURES
General Description
The LMD-400-R (458-462.5MHz) is a synthesized multi channel transceiver module for use under
the FCC Part 90 Private Land Mobile Radio (PLMR) services. This simple, compact and low power
transceiver is designed for embedding in user equipment and suitable for various low power
industrial telecontrol and telemetry applications requiring high performance and reliability.
All high frequency circuits are enclosed inside a robust housing to provide superior resistance
against shock and vibration. Using a TCXO as the reference oscillator circuit of the radio component
ensures high frequency stability in the temperature range from –20 to +60 °C.
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Features
¾ Programmable RF channel with 12.5 kHz channel space
¾ 10 mW, GFSK, 4800 bps
¾ Low power operation 3- 5.5V, 50mA/TX, 32mA/RX
¾ Small size 50 x 30 x 9 mm
¾ Excellent mechanical durability, high vibration & shock resistance
¾ Wide operation range – 20 to +60 degree C
¾ FCC part 90 certified
Applications
¾ Industrial remote control / Telemetry
¾ Remote monitoring / Security