LMT2-458-10 Просмотр технического описания (PDF) - Radiometrix Ltd

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LMT2-458-10

UHF Narrow Band FM Low Cost multi channel radio modules

Radiometrix Ltd 

NEW

Radiometrix

Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England

Issue 2, 01 November 2007 Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233

LMT2/LMR2

UHF Narrow Band FM Low Cost multi channel radio modules

The LMT2 transmitter and LMR2

receiver modules offer a multi channel,

low power, and reliable data link. This

makes the LMT2/LMR2 pair ideally

suited to those low power applications

where existing wideband modules have

insufficient range, or where low cost

multi-channel operation is needed

without compromising on RF

specification or regulatory requirement.

Figure 1: LMT2 transmitter and LMR2 receiver

Features

• Conforms to EN 300 220-3 and EN 301 489-3

• High performance double superhet. PLL synthesizer with TCXO

• quasi-dc (peak sampling) data recovery circuit (for enhanced performance on unbalanced

datastreams)

• SAW front-end filter

• Data rates up to 5 kbps for standard module

• Usable range over 1km

• Fully screened. Low profile

• Feature-rich interface (RSSI, analogue and digital baseband)

• Re-programmable via RS232 interface

• Low power requirements

Applications

• Handheld terminals

• EPOS equipment, barcode scanners

• Data loggers

• Industrial telemetry and telecommand

• In-building environmental monitoring and control

• High-end security and fire alarms

• DGPS systems

• Vehicle data up/download

• Heavy vehicle/machinery controls

Technical Summary

• Operating frequency: 433.875-434.650MHz (EU band)

458.525 - 459.1MHz (UK band)

• Other custom UHF bands

• 32 channels

• Transmit power: +10dBm (10mW) / +20dBm (100mW)

• Supply range: 3.1 – 15V (TX @ 10mW and RX), 4.1 – 15V (TX @ 100mW)

• Current consumption: 34mA @ 10mW, 90mA @ 100mW (transmit) and 20mA (receive)

• Data bit rate: 5kbps max. (standard module)

• Receiver sensitivity: -118dBm (for 12 dB SINAD)

• Serial configuration by inverted RS232 at 3V CMOS level

Radiometrix Ltd

LMT2/LMR2 Data Sheet

page 1

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