National Instruments 6527 用户手册
Chapter 3
Making Signal Connections
3-2
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Note
For input ports, connect the higher voltage to the DIG+ pin and the lower voltage to
the DIG– pin. For output ports, you can connect signals to the two pins of each line without
regard to which voltage is higher. The output lines consist of solid-state relays and act as
bidirectional switches.
regard to which voltage is higher. The output lines consist of solid-state relays and act as
bidirectional switches.
Figure 3-1. 6527 Connector Pin Assignments
50
100
49
99
48
98
47
97
46
96
45
95
44
94
43
93
42
92
41
91
40
90
39
89
38
88
37
87
36
86
35
85
34
84
33
83
32
82
31
81
30
80
29
79
28
78
27
77
26
76
25
75
24
74
23
73
22
72
21
71
20
70
19
69
18
68
17
67
16
66
15
65
14
64
13
63
12
62
11
61
10
60
9
59
8
58
7
57
6
56
5
55
4
54
3
53
2
52
1
51
GND
GND
+5 V
+5 V
DIG–0.0
DIG–3.0
DIG+0.0
DIG+3.0
DIG–0.1
DIG–3.1
DIG+0.1
DIG+3.1
DIG–0.2
DIG–3.2
DIG+0.2
DIG+3.2
DIG–0.3
DIG–3.3
DIG+0.3
DIG+3.3
DIG–0.4
DIG–3.4
DIG+0.4
DIG+3.4
DIG–0.5
DIG–3.5
DIG+0.5
DIG+3.5
DIG–0.6
DIG–3.6
DIG+0.6
DIG+3.6
DIG–0.7
DIG–3.7
DIG+0.7
DIG+3.7
DIG–1.0
DIG–4.0
DIG+1.0
DIG+4.0
DIG–1.1
DIG–4.1
DIG+1.1
DIG+4.1
DIG–1.2
DIG–4.2
DIG+1.2
DIG+4.2
DIG–1.3
DIG–4.3
DIG+1.3
DIG+4.3
DIG–1.4
DIG–4.4
DIG+1.4
DIG+4.4
DIG–1.5
DIG–4.5
DIG+1.5
DIG+4.5
DIG–1.6
DIG–4.6
DIG+1.6
DIG+4.6
DIG–1.7
DIG–4.7
DIG+1.7
DIG+4.7
DIG–2.0
DIG–5.0
DIG+2.0
DIG+5.0
DIG–2.1
DIG–5.1
DIG+2.1
DIG+5.1
DIG–2.2
DIG–5.2
DIG+2.2
DIG+5.2
DIG–2.3
DIG–5.3
DIG+2.3
DIG+5.3
DIG–2.4
DIG–5.4
DIG+2.4
DIG+5.4
DIG–2.5
DIG–5.5
DIG+2.5
DIG+5.5
DIG–2.6
DIG–5.6
DIG+2.6
DIG+5.6
DIG–2.7
DIG–5.7
DIG+2.7
DIG+5.7
Input
Output with Readback