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Chapter 4 Signal Connections
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National Instruments Corporation 4-5 PCI-4451/4452 User Manual
Digital I/O Connector Signal Descriptions
Figure 4-2 shows the digital pin connections for the PCI-4451/4452.
Figure 4-2.
Digital Pin Connections
Refer to Appendix B, Pin Connections, for the digital pin connections of
the 68-pin connector.
N/C
N/C
N/C
N/C
N/C
N/C
N/C
+5 V
+5 V
+5 V
DIO(3)
DIO(4)
DIO(2)
DIO(0)
DIO(6)
DIO(7)
CONVERT*
PFI1/TRIG2 (PRETRIG)
PFI3/GPCTR1_SOURCE
GPCTR1_OUT
PFI7
PFI6/WFTRIG
PFI8/GPCTR0_SOURCE
GPCTR0_OUT
FREQ_OUT
DGND
DGND
N/C
N/C
DGND
+5 V
N/C
N/C
DGND
DIO(5)
DGND
EXTSTROBE*
DGND
DIO(1)
DGND
RESERVED1
DGND
PFI0/TRIG1(EXT_TRIG)
DGND
PFI4/GPCTR1_GATE
DGND
UPDATE*
DGND
PFI9/GPCTR0_GATE
DGND
25 50
24 49
23 48
22 47
21 46
20 45
19 44
18 43
17 42
16 41
15 40
14 39
13 38
12 37
11 36
10 35
934
833
732
631
530
429
328
227
126
User.book Page 5 Tuesday, April 14, 1998 10:20 AM