National Instruments 653 Series User Manual page 99

Appendix C Connecting Signals with Accessories
Making 68-Pin Signal Connections
Do not make connections that exceed any of the maximum input or output ratings
Caution
on the NI 653X, listed in Appendix A, Specifications. This includes connecting any power
signals to ground and vice versa. Doing so may damage your device and your computer.
NI is not liable for any damages resulting from these types of signal connections.
NI 653X User Manual
DIOD7
GND
DIOD4
DIOD3
GND
DIOD0
DIOC7
GND
DIOC4
DIOC3
GND
DIOC0
DIOB7
DIOB6
GND
RGND
GND
DIOB1
DIOB0
DIOA7
GND
DIOA4
DIOA3
GND
DIOA0
REQ2*
ACK2 (STARTTRIG2)*
STOPTRIG2
PCLK2
PCLK1
STOPTRIG1
ACK1 (STARTTRIG1)*
REQ1*
+5 V
Figure C-1. NI 653X I/O Connector 68-Pin Assignments
C-2
34 68
GND
33 67 DIOD6
32 66 DIOD5
31 65
GND
30 64 DIOD2
29 63 DIOD1
28 62 GND
27 61 DIOC6
26 60 DIOC5
25 59 GND
24 58 DIOC2
23 57 DIOC1
22 56 RGND
21 55 GND
20 54 DIOB5
19 53 DIOB4
18 52 DIOB3
17 51 DIOB2
16 50 GND
15 49 GND
14 48 DIOA6
13 47 DIOA5
12 46 GND
11 45 DIOA2
10 44 DIOA1
43 RGND
9
8 42 GND
7 41 GND
CPULL
6 40
5 39 GND
4 38 DPULL
GND
3 37
2 36 GND
1 35 RGND
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