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ADAM-4550 User's Manual 9
Figure 1: Basic Connection Diagram
PC
2 RX
3 TX
7 RTS
8 CTS
4 DTR
6 DSR
5 GND
2 RX/TX
3 TX/RX
7 CTS/RTS
8 TRS/CTS
4 DSR/DTR
6 DTR/DSR
5 GND
RF
Module
DATA+
DATA-
RS-485
RF
Module
DATA+
DATA-
RS-485
RS-232 Connector
DATA+
DATA-
RS-485
RS-232 ADAM-4550 ADAM-4550 ADAM-4011
Note:
The RS-232 cable does not have to be
a null-modem cable. The ADAM-4550
will automatically detect and set itself
as a DCE.