Chapter 3. Connector pinouts

3.1 Input channels connectors

These are standard BNC connectors.

Pin	Function
Centre	Input signal, +ve
Outer	Input signal, –ve (differential) or signal ground

3.2 Monitor and DCM console connectors

These are standard 9-pin “D”-type plugs.

Pin	Function
2	RXD – Data receive
3	TXD – Data transmit
5	GND – Ground

3.3 GPS in connector

This is a 9-pin “D”-type socket.

Pin	Function
3	RS232 receive from GPS
5	RS232 ground
6	Power +12 V
8	PPS
9	Power 0 V

3.4 GPS out connector

This is a 9-pin “D”-type plug.

Pin	Function
3	RS232 receive from GPS
5	RS232 ground
8	PPS

3.5 Rear panel Data out connectors

These two 9-pin “D”-type plugs have the same pin assignments.

Pin	Function
2	RS232 transmit
3	RS232 receive
5	Isolated Ground
6	RS422 transmit, +ve
7	RS422 transmit, –ve
8	RS422 receive, +ve
9	RS422 receive, –ve

3.6 Rear panel Input Channels connectors

The Input Channels I – P connector has identical connections to the A – H connector, but channels I, J, K, L, M, N, O, P, should be read for channels A, B, C, D, E, F, G, H, respectively.

Pin	Function
1	Signal Ground
2	Channel A, –ve
3	Channel B, +ve
4	Signal Ground
5	Channel C, –ve
6	Channel D, +ve
7	Signal Ground
8	Channel E, –ve
9	Channel F, +ve
10	Signal Ground
11	Channel G, –ve
12	Channel H, +ve
13	Signal Ground
14	Channel A, +ve
15	Signal Ground
16	Channel B, –ve
17	Channel C, +ve
18	Signal Ground
19	Channel D, –ve
20	Channel E, +ve
21	Signal Ground
22	Channel F, –ve
23	Channel G, +ve
24	Signal Ground
25	Channel H, –ve

3.7 Power connector

This is a Binder series 712 subminiature circular connector.

Pin	Function
1	10 – 36 V DC power
2	0 V power