Patton electronic 2800 user manual Female DB-15 connector

OnSite 2800 Series User Manual D • Port pin-outs

X.21 serial port

Table 18. X.21 Female DB-15 connector

X.21 Interface Pin-Out

Pin	Signal
1	Frame Ground
2	TD-a
3	CNTRL-a
4	RD-a
5	IND-a
6	SET-a
8	Signal Ground
9	TD-b
10	CNTRL-b
11	RD-b
12	IND-b
13	SET-b

Note Pins not labeled are not used.

Sync serial port 131