National Instruments PXI NI PXI-1052 - Manual (Page 36)

Chapter 2 Installation and Configuration
© National Instruments Corporation 2-21 NI PXI-1052 User Manual
Cautions When connecting digital voltmeter probes to the rear 9-pin D-Sub connector,
be careful not to short the probe leads together. Doing so can damage the power supply.
Use the rear-panel 9-pin D-Sub connector to check voltages only. Do not use the connector
to supply power to external devices, or you can damage the equipment in the chassis.
You can use a digital voltmeter to ensure all CompactPCI voltage levels in
the PXI-1052 are within the allowable limits. Referring to Table 2-2,
connect one lead of the voltmeter to a supply pin on the remote power
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.
If the voltages fall within the specified ranges, the chassis complies with
the CompactPCI voltage-limit specifications.
Table 2-2. Power Supply Voltages at Voltage Monitoring Connector
Pin Supply Acceptable Voltage Range
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