![background image](http://html1.mh-extra.com/html/national-instruments/ni-6535/ni-6535_user-manual_3419390007.webp)
©
National Instruments Corporation
7
NI 653x Cable Adapter User Guide
Note
Refer to the help file for your device for information about the number of available
DIO channels on your device. DIO <20..31> or PFI_0 may not be applicable to your
device.
Figures 5 and 6 show pinouts for the VHDCI connector and 68-pin DAQ
connector, respectively.
Figure 5.
VHDCI Connector Pinout (NI SHC68-C68-D2 or NI C68-C68-D4 Cable)
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
DIO 31
GND
DIO 29
GND
DIO 27
GND
DIO 25
RESERVED
DIO 23
GND
DIO 21
GND
DIO 19
GND
DIO 17
GND
DIO 15
GND
DIO 13
GND
DIO 11
GND
DIO 9
GND
DIO 7
PFI 1
DIO 5
GND
DIO 3
PFI 3
DIO 1
GND
DDC CLK OUT/PFI_4
GND
DIO 30
GND
DIO 28
GND
DIO 26
GND
DIO 24
GND
DIO 22
GND
DIO 20
GND
DIO18
GND
DIO 16
GND
DIO 14
RESERVED/PFI_0
DIO 12
GND
DIO 10
GND
DIO 8
GND
DIO 6
RESERVED
DIO 4
GND
DIO 2
PFI 2
DIO 0
GND
STROBE/PFI_5
GND