B3 Digital Output Port Connector - Ametek 7280 Instruction Manual

Appendix B, PINOUTS
B.3 Digital I/O Port Connector
B-2
8-bit TTL-compatible input/output port with each bit being configurable as an input
or output. If configured as an output, the bit status can be set, and if configured as an
input it can be read, from the front panel or via the computer interfaces. Each output
line can drive three LSTTL loads, and each input presents one LSTTL load. The
connector will mate with a 20-pin IDC header plug (not supplied). The pinout is as
follows:-
Pin Function
1 Ground
2 Ground
3 D0
4 Ground
5 D1
6 Ground
7 D2
8 Ground
9 D3
10 Ground
11 D4
12 Ground
13 D5
14 Ground
15 D6
16 Ground
17 D7
18 Ground
19 TTL Trigger Input
20 +5 V
D0 = Least Significant Bit
D7 = Most Significant Bit
Figure B-3, Digital I/O Port Connector