RX1M-XXX-10

EW N Issue 3, 19 October2007 Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 TX1M/RX1M VHF VHF Narrow Band FM multi channel radio Transmitter & Receiver Band UK Version: RX1M-173-5/TX1M-173-5 (10mW) The TX1M transmitter and RX1M receiver modules offer a low power, reliable data link in an industry-standard pin out and footprint. This makes the TX1M/RX1M pair ideally suited to those low power applications where existing wideband modules have insufficient range, or where multi-channel operation is needed in VHF frequency. Features ! ! ! ! ! ! ! ! ! TX1M-151-5 RX1M-151-5 Conforms to EN 300 220-3 and EN 301 489-3 Any custom band in 60 - 65MHz with 1MHz or 135 - 175MHz with 3MHz (AR0) frequency range Data rates up to 5 kbps for standard module Usable range over 1km (@100mW) 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: 60-65MHz or 135 – 175MHz 128 serial select or 8 parallel select channels Transmit power: +20dBm (100mW) nominal Supply range: 4.5V - 15V Current consumption: 110mA transmit, 13mA receive Data bit rate: 5kbps max. (standard module) Receiver sensitivity: -118dBm (for 12 dB SINAD) Receiver blocking -85dB ! ! ! ! Radiometrix Ltd TX1M/RX1M Data Sheet page 1 Radiometrix Ltd TX1M/RX1M Data Sheet Figure 1: TX1M block diagram page 2 Radiometrix Ltd TX1M/RX1M Data Sheet Figure 2: RX1M block diagram page 3 Pin Description – TX1M Pin: A 1 2 Pin: B 1 2 3 Name Vcc Gnd Name Gnd RF out Gnd Function 4.5 – 15V Ground Function RF ground To the antenna RF ground Figure 3: TX1M 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 (>2kHz for 60-65MHz) 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 – RX1M Pin A 1 2 Pin B 1 2 3 Name Vcc Gnd Name Gnd RF out Gnd Function 4.5-15V Ground Function RF ground To the antenna RF ground Figure 4: RX1M 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 RX1M mutes the AF and RXD outputs when RF input signal is