Operation Guide

OG_LMD-401_v10e Circuit Design, Inc. 3
OPERATION GUIDE
GENERAL DESCRIPTION & FEATURES
General Description
The LMD-401 is a synthesized multi-channel transceiver module for use under the Land Mobile
Radio services (FCC Part 90, ISED RSS-119). This simple, compact and low power transceiver is
designed for embedding in user's portable or fixed 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 +65 °C.
The LMD-401 is the same size and pin-compatible with Circuit Design’s EN 300 220 compliant
license-exempt transceiver model STD-302Z that has been widely used as a standard transceiver
for remote control in industrial radio applications.
Features
 Programmable RF channel with 12.5 kHz channel space
 10 mW, GFSK, 4800 bps
 Low power operation 3 - 5.5 V, 46 mA/TX, 36 mA/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 +65 °C
 FCC part 90 and ISED RSS-119 certified
Applications
 Industrial remote control
 Telemetry
 Remote monitoring / Security
 Data acquisition/ SCADA