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LMR1-XXX-5 PDF预览

LMR1-XXX-5

更新时间: 2024-11-26 03:51:43
品牌 Logo 应用领域
RADIOMETRIX 无线无线模块
页数 文件大小 规格书
10页 236K
描述
VHF Narrow Band FM Low Cost multi channel radio modules

LMR1-XXX-5 数据手册

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Radiometrix  
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England  
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233  
Issue 1, 06 March 2008  
LMT1/LMR1  
VHF Narrow Band FM Low Cost multi channel radio modules  
The LMT1 transmitter and LMR1  
receiver modules offer a multi channel,  
low power, and reliable VHF data link.  
This makes the LMT1/LMR1 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: LMT1 transmitter and LMR1 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)  
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: 173.200 - 173.325MHz (UK band)  
150.825 - 152.450MHz (Australian Band)  
Other VHF frequencies available  
4 UK allocation channels (32 maximum)  
Transmit power: +10dBm (10mW) nominal @ 3.1V (Adjustable 1 - 25mW)  
+20dBm (100mW) nominal @ 4.1V (Adjustable 25 - 100mW)  
Supply range: 3.1 – 15V (@10mW) transmitter and receiver  
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  
LMT1/LMR1 Data Sheet  
page 1  

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