GE A8950CC installation instructions Pin Signal

NOTE: When making data connections listed in Tables 3 through 11, always connect the pins labeled IN on the fiber unit to the pins labeled OUT on the external equipment, and the pins labeled IN on the external equipment to the pins labeled OUT on the fiber unit.

TABLE 3: RS-232 INTERFACE

DATA SELECT Switch: Position 1

Pin	Signal
1	RS-232 Out
2	N/C
3	GND/SHIELD
4	N/C
5	N/C
6	GND
7	N/C
8	RS-232 In

TABLE 5: TTL INTERFACE

DATA SELECT Switch: Position 3

Pin	Signal
1	N/C
2	TTL Out
3	GND/SHIELD
4	N/C
5	N/C
6	GND/SHIELD
7	TTL In
8	Tie to pin 6

TABLE 7: MANCHESTER/BIPHASE INTERFACE

DATA SELECT Switch: Position 5

Pin	Signal
1	Manchester/Biphase Out (+)
2	N/C
3	Manchester/Biphase Out (-)
4	N/C
5	Termination, tie to 8 if req’d.
6	GND/SHIELD
7	Manchester/Biphase In (-)
8	Manchester/Biphase In (+)

TABLE 4: RS-232 WITH HANDSHAKING INTERFACE

DATA SELECT Switch: Position 2

Pin	Signal
1	RS-232 Out
2	RTS/CTS Out
3	GND/SHIELD
4	N/C
5	N/C
6	GND
7	RTS/CTS In
8	RS-232 In

TABLE 6: RS-422 INTERFACE

DATA SELECT Switch: Position 4

Pin	Signal
1	RS-422 Out (+)
2	RS-422	Out (-)
3	GND/SHIELD
4	N/C
5	Termination, tie to 8 if req’d.
6	GND/SHIELD
7	RS-422	In (-)
8	RS-422	In (+)

TABLE 8: RS-485 2-WIRE INTERFACE

DATA SELECT Switch: Position 6 (<200mV),

Position 7 (<1V), Position 8 (<2V)

Pin	Signal
1	N/C
2	N/C
3	GND
4	+5 VDC Bias Out
5	Termination, tie to 8 if req’d.
6	GND/SHIELD
7	RS-485 (-)
8	RS-485 (+)

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