the power inhibit button for 4 seconds. To power off the chassis, again press and
hold the power inhibit button for 4 seconds.
Manual mode is used when you would like to manually control the inhibit state of the chassis.
In Manual mode, driving the Remote Inhibit signal high or floating it will cause the chassis to
be powered on. Driving the Remote Inhibit signal low or shorting it to ground will cause main
power to be inhibited.
Note The Timing and Synchronization upgrade is required for access to the
Remote Inhibit signal. Without this upgrade, a chassis in Manual mode will always
be powered on when AC power is connected.
Inhibit Mode Selection
The chassis Inhibit Mode on the PXIe-1092 chassis is selected using a DIP switch on the
backplane. Refer to the DIP Switches section for more information about the DIP switch.
Refer to the Front View of the PXIe-1092 Chassis for the location of this switch.
Fan Mode
The PXIe-1092 chassis operates in two main fan modes.
In Auto mode, the speed of the chassis fans is determined by chassis intake air temperature.
Select Auto mode for improved acoustic performance.
In High mode, the speed of the chassis fans is fixed at high speed regardless of chassis intake
air temperature. Select High mode for maximum cooling performance.
Cooling Profiles
Both fan modes are available within the 38 W and 58W/82 W cooling profiles.
• 38 W cooling profile supports NI modules up to 38 W max power dissipation.
• 58W/82 W cooling profile supports NI modules up to 58 W max power dissipation from
0 °C to 55 °C, and NI modules up to 82 W max power dissipation from 0 °C to 40 °C.
Note Refer to Operating Environment requirements in the PXIe-1092
Specifications for more information about chassis ambient temperature range and
cooling capacity.
Fan Mode Selection
The chassis fan mode can be selected using Measurement & Automation Explorer (MAX).
Refer to the Fan Configuration in MAX section for more information.
Alternatively, the fan mode on the PXIe-1092 chassis is selected using a DIP switch on the
backplane. Refer to the DIP Switches section for more information about the DIP switch.
Note The DIP switch must be in the Auto position for software configuration in
MAX to work. If the DIP switch is in the High position, the chassis fan mode will be
High regardless of the software setting.
24 | ni.com | PXIe-1092 User Guide
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