Table 2-1. Ni Pxi-4224 25-Pin D-Sub Terminal Pin Assignments - National Instruments Isolated Analog Input Device NI PXI-4224 User Manual

Chapter 2 Connecting Signals
The PFI 0/CAL SMB connector is for low-voltage timing and calibration signals
Caution
only. Voltages greater than ±15 V can damage the device.
If you are building a 25-pin D-SUB connector for your application, make sure you use a
connector and wires that are safety rated for the voltage and category of the signals in your
application.
Front Connector
Diagram
*
NC—No Connection
NI PXI-4224 User Manual

Table 2-1. NI PXI-4224 25-Pin D-SUB Terminal Pin Assignments

Pin Number
14
15
16
17
18
19
20
21
22
23
24
25
N/A
Signal Names Pin Number
AI 0 –
AI 1 –
AI 2 –
AI 3 –
AI 4 –
AI 5 –
AI 6 –
AI 7 –
No Pin
*
NC
SPI CLK
SELECT
N/A
2-2
Signal Names
1 AI 0 +
2 AI 1 +
3 AI 2 +
4 AI 3 +
5 AI 4 +
6 AI 5 +
7 AI 6 +
8 AI 7 +
9 No Pin
10 D GND
11 MISO
12 MOSI
13 +5 V
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