Smaller than a credit card!
MEKATRONIX RF232 WIRELESS SPECIFICATIONS
Smaller than a credit card!
Radio Frequency 902-928 MHz, unlicensed ISM band
Type Frequency Hopping Spread Spectrum Transceiver
Frequency Control Direct FM
Network Topology Point-Multipoint and Point-to-Point Multi-Drop Transparent
Networking
Channel Capacity 65,000 Network Identifiers share 25 hop channels 900 MHz
Serial Data Interface Asynchronous serial CMOS signals, 5V, Interface board
RS-232, DCE
I/O Data Rate Software selectable 2400-57,600 bps, 1200 bps available
RF Baud Rate 10,000 bps
Data Throughput 19200 bps
Transmit Power Output 100 mW nominal
Rx Sensitivity -107 dBm
Range* 900 Mhz - Indoor: 600í to 1500í Outdoor: 7 mi. with dipole, >20 Mi. with
gain antenna
*Range calculations are for 9600 baud radio, line-of-sight. Actual
range will vary based upon specific board integration, antenna selection, environment
and your device.
Supply Voltage 5 VDC, +/-0.3V to module, 7-18 VDC to interface board
Current Consumption 900 MHz module - Tx 150 mA, Rx 50 mA, Power Down <10 µA
900 MHz module & interface board - Tx 210 mA, Rx 70 mA, Sleep TBD
Physical Properties
Board Size 1.6î x 2.825î x .35î (4.06 x 6.86 x 0.89)cm
Weight 0.8 oz. (24 g)
Connector 11 pin & 4 pin 0.1î spaced male Berg type headers
Operating Temperature 0oC to 70oC (-40oC to 85oC available)
Operating Humidity 10% to 90% (non-condensing)
Optional Antenna
Antenna Connector MMCX, Reverse Polarity SMA
Antenna Impedance 50 ohms unbalanced
Approved Antennas Integral wire antenna (factory installed), 1.2 dBi gain
1/4 wave flexible whip (3î), pigtail MMCX, 0 dBi gain,
1/2 wave flexible whip (6î), SMA, 2.1 dBi gain
PIN DEFINITIONS
Connector Pinout: Serial Connector Pinout:
Pin Signal Type Description Pin Signal Type Description
1 CTS Output Clear to send Flow control 1 NC - No Connect
2 PwrDn Input Power Down 2 RXD Output Data
3 RX Output Receive Data 3 TXD Input Data
4 TX Input Transmit Data 4 DTR Input Sleep Control
5 RTS Input Binary Prorgam Control 5 SGND Ground Common Return
6 *Reset Input Reset radio (assert low to reset) 6 NC - No Connect
7-9 NC - Reserved 7 RTS Input Binary Prorgam Control
10 Vcc Input 5 VDC, +/-0.3V (regulated) 8 CTS Ouput Clear to Send Control
11 Gnd - Signal and chassis ground 9 NC - No Connect
© 2002 Mekatronix TM, Inc.