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Appendix B: Cabling Diagrams
205
NMS
PROTECTIVE GROUND
TX DATA
RX DATA
RTS (REQUEST-TO-SEND)
CTS (CLEAR-TO-SEND)
DSR (DATA SET READY
SIGNAL GROUND
CD (CARRIER DETECT)
UNASSIGNED
DTR (DATA TERMINAL READY)
RI (RING INDICATOR)
EXTERNAL TX CLOCK
BUSY
1
2
3
4
5
6
7
8
11
20
22
24
25
PIN 13
PIN 1
DCE
RS-232
PIN 25
DB25
(MALE)
DB25 PIN
ASSIGNMENTS
NO C NC GND
GROUND (PIN 1)
NORMALLY CLOSED
COMMON
NORMALLY OPEN
Cabling for the NMS Module