User's Manual
OG_LMD-400-R-C_v12e 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 90Private Land Mobile Radio (PLMR) services and RSS-119 .
This simple, compact and low power transceiver is designed for embedding
in user
's portableorfixedequipment 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.
The LMD-400-R is the same size and pin-compatible with Circuit Design’s EN 300220 compliant
license-exempt transceiver model STD-302N-R that has been widely used as a standard transceiver
for remote control in industrial radio applications.
EN 300 113 compliant European versions are available in 438-442 MHz, 458-462 MHz. A custom
variant in the 400 MHz band, with 4 MHz switching range is available for volume orders.
Features
Programmable RF channel with 12.5 kHz channel space
10 mW, GFSK, 4800 bps
Low power operation 3- 5.5V, 52mA/TX, 42mA/RX
High receiver selectivity & blocking
Small size 50 x 30 x 9 mm
Excellent mechanical durability, high vibration & shock resistance
Wide operation range - 20 to +60 °C
FCC part 90 and RSS-119 cer
tified
App
lications
Industrial remote control
Telemetry
Remote monitoring / Security
Data acquisition/ SCADA