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Connecting to a PC
To connect the radio modem to a personal computer use the 9 way modem cables
supplied. If the computer has a 25 way connector then the use of a suitable 25 way to
9 way adapter should be used. Note the remaining RS232 signals are not connected
internally in the RM-232 radio modem.
When using the Radio Modem with equipment capable of RTS/CTS hardware flow
control it is always advisable to enable it to prevent the possibility of data buffer
overflows within the Radio Modem itself.
Ensure that your communications software on the host computer is configured to the
selected baud rate, 8 data bits, 1 stop bit and RTS/CTS flow control.
User's Guide
PC Serial Port
DTE D9
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Request To Send
Clear To Send
PC connector (9 way) to radio modem (9 way)
PC Serial Port
DTE D25
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Request To Send
Clear To Send
PC connector (25 way) to radio modem (9 way)
Radio Modem
2
3
4
5
7
8
Radio Modem
3
2
20
7
4
5
Connecting The Radio Modem 5-2
DCE D9F
2
3
4
5
7
8
DCE D9F
2
3
4
5
7
8
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