1210 External Connectors, 6890A and 6890 Plus
BCD inputs
10 of 14
Jun 2001
Electrical
Agilent 6890 Gas Chromatograph Service Manual
BCD inputs
J6
BCD Inputs (TTL)
Pin Function Logic Value
1 LS Digit 0 LOW true 1
2 LS Digit 1 LOW true 2
3 LS Digit 2 LOW true 4
4 LS Digit 3 LOW true 8
5 unused
6 unused
7 unused
8 GND
9 unused
10 unused
11 unused
12 MS Digit 0 LOW true 10
13 MS Digit 1 LOW true 20
14 MS Digit 2 LOW true 40
15 MS Digit 3 LOW true 80
U114
Buffer
+5V
LSO
LS1
LS2
LS3
MS0
MS1
MS2
MS3
ª 4.7K W
1
8
9
15
Value