Chapter 2
Installation and Configuration
NI PXI-1042 Series User Manual
2-8
ni.com
Power Switch LED Indicator
The chassis power switch has an integrated LED. This LED indicates one
of three different conditions:
•
If the power switch LED is steady green (not flashing), the chassis is
powered on and operating normally.
•
If the power switch LED is flashing green, the air-intake temperature
has exceeded the chassis operating range.
•
If the power switch LED is flashing red, the power supply outputs are
not within voltage regulation requirements.
Remote Voltage Monitoring and Control
The PXI-1042 Series chassis support remote voltage monitoring and
inhibiting through a male 9-pin D-SUB (DB-9) connector located on the
rear panel. Table 2-1 shows the pinout of the 9-pin D-SUB (DB-9)
connector.
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