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National Instruments Corporation
9
PXI-1000B AC Power Supply Shuttle Installation Guide
You can use the Inhibit signal (active low) to turn off the power supply
outputs. To use this feature, connect the Inhibit pin (pin 5) to a Logic
Ground pin (pin 1 or 9) on the AC-only input power supply or Inhibit
Return (pin 3) for the DC-capable power supply. Make sure the power
(standby) switch is in the On position. As long as the connection is made,
the power supply inhibits its DC outputs. DC output resumes when Inhibit
is no longer connected. Note that the power (standby) switch on the front
of the chassis uses this inhibiting feature. For remote reset, connect a
momentary switch between pin 5 and pin 1 (or pin 9) on the AC-only input
power supply or between pin 5 and pin 3 for the DC-capable power supply.
Maintenance
This section describes basic maintenance procedures you can perform on
the PXI-1000B AC power supply shuttle.
Service Interval
Clean the fan filters at a maximum interval of six months. Depending on
the amount of use and ambient dust levels in the operating environment, the
filters may require more frequent cleaning.
Clean dust from the exterior (and interior) as needed, based on the
operating environment. Periodic cleaning increases reliability.
Preparation
The information in this section is designed for use by qualified service
personnel. Read the
section at the beginning of this
document before attempting any procedures in this section.
Caution
Many components within the power supply shuttle are susceptible to static
discharge damage. Service the power supply shuttle only in a static-free environment.
Observe standard handling precautions for static-sensitive devices while servicing the
power supply shuttle. Always wear a grounded wrist strap, or equivalent, while servicing
the power supply shuttle.
Cleaning
Cleaning procedures consist of exterior cleaning of the power supply
shuttle and cleaning the fan filters. Refer to your module user
documentation for information on cleaning the individual CompactPCI or
PXI modules.
Caution
Always power-off the chassis and disconnect the power cord before cleaning or
servicing the power supply shuttle.
