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NI PXI-1042 Power Supply Shuttle User Guide 4 ni.com
Configuration
The fan-speed selector switch is on the rear panel of the power supply
shuttle. Refer to Figure 1 to locate the fan-speed selector. Select HIGH for
maximum cooling performance (recommended) or AUTO for quieter
operation. When set to AUTO, air-intake temperature determines the fan
speed.
Connecting Safety Ground
Caution The power supply shuttle is designed with a three-position NEMA 5-15 jack that
connects the ground line to the chassis ground. To minimize shock hazard, make sure the
electrical power outlet you use to power the chassis has an appropriate earth safety ground.
If your power outlet does not have an appropriate ground connection, you
must connect the premise safety ground to the chassis grounding screw.
Refer to Figure 1 to locate the chassis grounding screw. To connect the
safety ground, complete the following steps:
1. Connect a 16 AWG (1.3 mm) wire to the chassis grounding screw
using a grounding lug. The wire must have green insulation with a
yellow stripe or must be noninsulated (bare).
2. Attach the opposite end of the wire to permanent earth ground using
toothed washers or a toothed lug.
Specifications
AC Input
Input voltage range .................................100 to 240 VAC
Operating voltage range
1
........................90 to 264 VAC
Input frequency.......................................50/60 Hz
Operating frequency range
1
....................47 to 63 Hz
Input current rating .................................8 A
Over-current protection ..........................10 A circuit breaker
Line regulation
3.3 V ................................................<±0.2%
5 V ...................................................<±0.1%
±12 V...............................................<±0.1%
1
The operating range is guaranteed by design.