TX2M-458-5

EW N Issue 3, 15 October 2007 Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 TX2M/RX2M UHF UHF Narrow Band FM multi channel radio modules UK Version: TX2M-458-5/RX2M-458-5 (100mW) European version: TX2M-433-5/RX2M-433-5 (10mW) The TX2M transmitter and RX2M receiver modules offer a low power, reliable data link in an industry-standard pin out and footprint. This makes the TX2M/RX2M pair ideally suited to those low power applications where existing wideband modules have insufficient range, or where multi-channel operation is needed. Two versions are available, covering the 458.5459.1MHz UK band (at 100mW) and the European 433.05-434.79MHz band. RX2M-458-5 TX2I-458-5 Features ! ! ! ! ! ! ! ! ! ! 433MHz version conforms to EN 300 220-3 and EN 301 489-3 and 458MHz version to MPT 1329 (UK specs) Any custom band between 420MHz and 480MHz with 5MHz (AR0) frequency range High performance double superhet, 128 channel PLL synthesizer with TCXO Data rates up to 5 kbps for standard module Usable range over 1km Fully screened. Low profile Feature-rich interface (RSSI, automatic noise squelch, analogue and digital baseband) Incorporate a 1200baud dumb modem 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 Vehicle data up/download Technical Summary ! ! ! ! ! Size: 59 x 38 x 7mm Operating frequency: 458.5-459.1MHz or 433.05-434.79MHz 23 channels in 458MHz band (128 channels max.) Transmit power: +20dBm (100mW) nominal Supply range: 4.5V - 16V Current consumption: 100mA transmit, 13mA receive Data bit rate: 5kbps max. (standard module) Receiver sensitivity: -118dBm (for 12 dB SINAD) TX2M/RX2M Data Sheet page 1 ! ! ! Radiometrix Ltd Radiometrix Ltd TX2M/RX2M Data Sheet Figure 1: TX2M block diagram page 2 Radiometrix Ltd TX2M/RX2M Data Sheet Figure 2: RX2M block diagram page 3 Pin Description - TX2M Pin: A 1 2 Pin: B 1 2 3 Name +Vin Gnd Name Gnd RF out Gnd Function +4.5-16V Ground Function RF ground To the antenna RF ground Figure 3: TX2M Footprint (Top) view Function Ground Transmitter enable. Low = ON, open = off. 4k7 internal pullup to Vcc DC coupled input for 3-12V CMOS logic. Leave open if unused AC coupled Analogue Input. Limit to 1Vpk-pk ±10% to keep distortion 2.5kHz DC supply. 75mA maximum drain. Only present when TXE is low Serial programming/configuration input at RS232 level Ground Parallel frequency select inputs. Inverted logic, 10k pullups to 4V Pin: C 1 2 3 4 5 6 7 8 9 10 Name 0V TXE TXD AF in +4.4Vout PGM 0V P1 (MOD TXD) P2 (MOD NC) P3 (MOD TXH) Pin Description - RX2M Pin A 1 2 Pin B 1 2 3 Name +Vin Gnd Name Gnd RF out Gnd Function +4.5-16V Ground Function RF ground To the antenna RF ground Figure 4: RX2M Footprint (Top) view Pin C Name Function 1 RSSI DC level between 0.5V and 2.5V. 60dB dynamic range 2 SQF Noise operated carrier detect. Open collector. ON/low = no signal 3 AF out 200mVpk-pk audio. DC coupled, approx 1V bias. Muted by squelch 4 RXD Open collector output of data slicer. Need external pull-up 5 +4.4V out DC supply. 75mA maximum drain. Present if unit is powered. 6 0V Ground 7 PGM Serial programming/configuration input at RS232 level 8 P1 (MOD NC) Parallel frequency select inputs. Inverted logic, 10k pullups to 4V 9 P2 (MOD RXD) 10 P3 (MOD CDE) NOTES: 1. Internal AF Input gain is factory set for 1Vpk-pk to produce 3kHz peak deviation and minimum distortion. Analogue gain may be set for an input level of 50mV – 2V pk-pk. This cannot be done without appropriate test equipment. Contact factory for details 2. Carrier detect on RX2M mutes the AF and DATA outputs when RF input signal is