Справочник Пользователя для National Instruments NI PXIe-1065

© National Instruments Corporation

When connecting digital voltmeter probes to the rear 9-pin D-SUB (DB-9) 

connector, be careful not to short the probe leads together. Doing so could damage the 
power supply.

You can use a digital voltmeter to ensure all voltage levels in the 
NI PXIe-1065 chassis are within the allowable limits. Referring to 
Table 2-2, connect one lead of the voltmeter to a supply pin on the remote 
voltage monitoring connector (9-pin D-SUB) on the rear panel. Refer to 
Table 2-1 for a pinout diagram of the remote voltage monitoring connector. 
Connect the reference lead of the voltmeter to one of the ground pins. 
Compare each voltage reading to the values listed in Table 2-2.

Use the rear-panel 9-pin D-SUB connector to check voltages only. Do not use the 

connector to supply power to external devices. 

If the voltages fall within the specified ranges, the chassis complies with the 
CompactPCI voltage-limit specifications.

8

–12 VDC

9

Logic Ground

Table 2-2.  Power Supply Voltages at Voltage Monitoring Connector (DB-9)

2

+5 V

4.75 to 5.25 V

4

+3.3 V

3.135 to 3.465 V

6

+12 V

11.4 to 12.6 V

8

–12 V

–12.6 to –11.4 V

1, 9

Logic Ground

0 V

Table 2-1.  Remote Inhibit and Voltage Monitoring Connector Pinout (Continued)

1

2

3

4

5

6

9

7

8