LMT3

Hartcran House, 231 Kenton Lane, Harrow, Middlesex, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233, www.radiometrix.com LMT3 Issue 1, 22 January 2013 NBFM Multi-channel transmitter for 868MHz SRD band The LMT3 is a 25kHz channel narrowband multichannel transmitter offering up to 25mW RF power. LMT3 can be paired with the Category 1 compliant receiver intended for European 869.2869.25MHz Social Alarm application. It can also be used for any 868 - 870MHz band Non-Specific SRD applications. The module offers a low power, reliable data link in an industry-standard pin out and footprint. Figure 1: LMT3 transmitter Features Conforms to EN 300 220-3 and EN 301 489-3 PLL synthesizer with TCXO Data rates up to 5 kbps for standard module Usable range over 500m @ 25mW Fully screened, Low profile Low power requirements Applications Social Alarm 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 Social Alarm frequencies: CH0: 869.2125MHz, CH1: 869.2375MHz Custom frequency within 865MHz - 870MHz 32 channels Transmit power: +10dBm (10mW) / +14dBm (25mW) Supply range: 3.1 – 15V (TX @ 10mW), 4.1 – 15V (TX @ 25mW) Current consumption: 34mA @ 10mW, 68mA @ 25mW Data bit rate: 5kbps max. (standard module) Serial configuration by inverted RS232 at 3V...