Chapter 3
Signal Connections
©
National Instruments Corporation
3-3
Figure 3-3.
NI 1428 68-Pin VHDCI Connector Pin Assignments
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
DGND
DGND
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
DGND
DGND
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
DGND
DGND
DGND
DGND
*CHASSIS_GND
RESERVED
DGND
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
DGND
Y (0)–
Y (0)+
Y (1)–
Y (1)+
Y (2)–
Y (2)+
YCLK –
YCLK+
Y (3)–
Y (3)+
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
TTL_TRIG(0)
TTL_TRIG(1)
TTL_TRIG(2)
TTL_TRIG(3)
CHASSIS_GND*
RESERVED
DGND
RESERVED
*For PXI-1428, the signal for pin 4 and pin 38 is DGND.
