RS232 L
OW
C
OST
RF M
ODEM
FEATURES
FM-232C-433
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Industry Standard RS-232.
Automatic Data Packetising, Error Checking
(Transparent link).
Available at 433MHz (10mW ERP)
Range upto 120 Metres
Network Configurable, User Selectable as Master or
Slave
56 Byte Data Buffer
Broadcast Facility
User Selectable Baud Rate 9600, 4800, 2400, 1200,
Half Duplex
Optional H/W or S/W Flow Control
LED Indication of Data Tx, Rx, CD.
9-30Vdc Power Supply
Requires no radio Licence To Operate
Miniature enclosure 90 x 55 x 40mm
DESCRIPTION
The R.F. Solutions low cost Wireless Modem provides a reliable serial data communications link that can be
used for many data communications applications. The RF Modem is very simple to use and provides an
RS232 ‘invisible link’ up to 9600 baud.
Each Modem may be configured to be either a ‘Master’ or ‘Slave’ to be used in a wireless network. Up to 127
‘slaves’ may be controlled by a single ‘Master’ Modem.
Packetising and encrypting the data as well as error checking with full acknowledgement for all data
transmitted achieve highly reliable communication.
The RF Modem is supplied with an RS232 cable to connect the host and requires only a 9-12Vdc power
supply.
BLOCK DIAGRAM
V
CC
Volatile Mem
9 Way 'D' Type
RS-232
MCU
FM 433MHz
Transceiver
TX
Links
RX
CD
DS232_2
June 00
©2000 Reg. No. 227 4001, ENGLAND
Page 1
RFSOLUTIONS [ RFSOLUTIONS.LTD ]
