Chapter 2
Installation and Configuration
NI PXIe-1071 User Manual
2-12
ni.com
Inhibit Mode Switch
On the NI PXIe-1071 backplane is a four-position DIP switch (SW1).
Switch 1 of SW1 controls the chassis inhibit mode. (Refer to Figure 2-7.)
In its default position (OFF), the PXI Express controller controls the power
supply on/off state based on the power switch on the chassis front panel.
Figure 2-7.
Switch 1 of SW1
When switch 1 of SW1 is on, the backplane controls the power supply
on/off state. This allows you to circumvent the controller and turn the
chassis on or off manually. When switch 1 of SW1 is on, the power supply
turns on when the you press the front panel power switch. When the power
supply is on, holding down the front panel power switch for about one
second turns the power supply off.
Cautions
Be careful to avoid damaging the backplane when accessing this switch.
Suddenly removing power from an operating controller may result in loss of data and
incorrect behavior on subsequent boots.
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