National Instruments NI PXIe-1075 - Manual (Page 31)

Chapter 2 Installation and Configuration
© National Instruments Corporation 2-11 NI PXIe-1075 User Manual
Note If two system fans or both of the power supply fans fail the chassis will shut down
automatically, preventing the chassis and modules from damage due to overheating.
Remote Voltage Monitoring and Control
The NI PXIe-1075 chassis supports remote voltage monitoring and
inhibiting through a female 9-pin D-SUB (DB-9) connector located on
the rear panel as shown in Figure 1-2,
Rear View of the NI PXIe-1075
Chassis . Table 2-1 shows the pinout of the 9-pin D-SUB (DB-9) connector.
Caution 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.
Table 2-1. Remote Inhibit and Voltage Monitoring Connector Pinout
DB-9 Pin Signal
1 Logic Ground
2 +5 VDC
3 Reserved
4 +3.3 VDC
5 Inhibit (Active Low)
6 +12 VDC
7 Reserved
8 –12 VDC
9 Logic Ground
1 2 3 4 5
6 9 7 8