Bank 0
50-Pin Digital Connector
+5 V
50 49 +5 V
48 47 PFI 15
46 45 PFI 14
44 43 PFI 13
42 41 PFI 12
40 39 PFI 11
38 37 PFI 10
36 35 PFI 9
34 33 PFI 8
32 31 PFI 7
30 29 PFI 6
28 27 PFI 5
26 25 PFI 4
24 23 PFI 3
22 21 PFI 2
20 19 PFI 1
18 17 PFI 0
16 15 P0.7
14 13 P0.6
12 11 P0.5
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
D GND
Bank 0
10
8
9
7
5
3
1
P0.4
P0.3
P0.2
P0.1
P0.0
6
4
2
Bank 0
34-Pin Analog Connector
AI GND 34 33 AI 15
AI 7
32 31 AI GND
30 29 AI 6
AI 14
AI GND 28 27 AI 13
AI 5
26 25 AI GND
24 23 AI 4
AI 12
AI GND 22 21 AI 11
AI 3
20 19 AI GND
18 17 AI 2
AI 10
AI GND 16 15 AI 9
AI 1
AI 8
14 13 AI GND
12 11 AI 0
Bank 0
AI GND 10
9
7
5
3
1
AI SENSE
APFI 0
AI GND
AI GND
AO 1
8
6
4
2
AO GND
AO GND
AO GND
AO 0
Figure 7. USB-6251/6281 OEM Connector Pinout
© National Instruments Corporation
9
NI USB-622x/625x/628x OEM User Guide
NI [ National Instruments ]
