Pin D Serial Port To A Modem; Pin D Serial Port Loop Back Connector - Brainboxes CC-313 Manual

RS232 Pinouts and Port Cabling

9 Pin D Serial Port To A Modem.

If you are connecting a MODEM to a 9 pin D Serial Port then
you will NOT need a cross over cable and a straight through cable
connected as the 9 to 25 pin adapter given in Figure 4-5.

9 Pin D Serial Port Loop Back Connector.

A loop back connector can be used to echo RS232 data
transmitted by a serial port back into its own RS232 receiver. In
this way, the function of the serial port can be tested.
For an AT style Serial Port use the a female 9 way connector
wired as in Figure 4-4
Figure 4-4. 9 Pin D Serial Loop Back Connector.
9 PIN D CONNECTOR
S C H E M AT IC R E P R E S E N TAT IO N :
A C T U A L R E P R E S E N TAT IO N :
Chapter 4 Page 40
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PCI Quad / Lynx 8 Port RS232
25 PIN D CONNECTOR
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