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Appendix B Pin Connections
PCI-4451/4452 User Manual B-2
©
National Instruments Corporation
Figure B-1.
68-Pin Digital Connector for any Digital Accessory
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
+5 V
DIO(0)
DIO(1)
DIO(2)
EXTSTROBE*
DIO(3)
DIO(4)
DIO(5)
DIO(6)
DIO(7)
RESERVED1
CONVERT*
PFI1/TRIG2 (PRETRIG)
PFI0/TRIG1 (EXT_TRIG)
PFI3/GPCTR1_SOURCE
GPCTR1_OUT
PFI4/GPCTR1_GATE
PFI7
PFI6/WFTRIG
UPDATE*
PFI8/GPCTR0_SOURCE
GPCTR0_OUT
PFI9/GPCTR0_GATE
FREQ_OUT
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
+5 V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
135
236
337
438
539
640
741
842
943
10 44
11 45
12 46
13 47
14 48
15 49
16 50
17 51
18 52
19 53
20 54
21 55
22 56
23 57
24 58
25 59
26 60
27 61
28 62
29 63
30 64
31 65
32 66
33 67
34 68
User.book Page 2 Tuesday, April 14, 1998 10:20 AM