HP 9130K Service Manual page 16

2-2
Interface Information
The pin-out for J2 is shown in Figure 2-2.
GND
1
3
5
9
11
13
15
17
19
21
23
31
Circuit
Side
GND
7
25
27
29
33
Circuit
Side
Pin
Pin
Input Control Lines
Signal Description
2 Connector Clamp
4
(Spare)
6
Drive Select 3
10 Drive Select 0
12
Drive Select 1
14 Drive Select 2
16 Motor On
18
Direction Select
20 Step
22
Composite Write Data
24 Write Gate
32 Side One Select
Component
Side
Output Status Lines
Signal
8
26
28
30
34
Component
Side
NOTE
Description
Index
Track 0
Write Protected
Composite Read Data
Connector Clamp
The drive electronics and bus lines use negative true logic.
34 2
Figure 2-2: Connector Jl Pin Out (Circuit Side)