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Appendix
Appendix G

Cable and Connector Diagrams

RS-232C Serial Cable
1 1 Frame Ground 1
2 2 Transmit Data 2
3 3 Receive Data 3
4 4 Request to Send 4
5 5 Clear to Send 5
6 6 Data Set Ready 6
7 7 Signal Ground 7
8 8 Carrier Detect 8
9 9 + Voltage Test 9
12 12 High Speed 12
15 15 Transmit Clock 15
17 17 Receive Clock 17
20 20 Data Terminal Ready 20
22 22 Ring Indicator 2 2
25 25 Terminal Busy 25
25-pin male connector (DB-25P)
25-pin female connector (DB-25S) on back of rack
Connects to terminal or computer RS-232C interface (serial port). Gender and pin-out depends on device.