LMT2 Datasheet, PDF (1/11 Pages) List of Unclassifed Manufacturers – UHF Narrow Band FM Low Cost multi channel radio modules

NEW
Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Issue 2, 01 November 2007 ^{Tel: [phone], Fax: [phone]}
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