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USER GUIDE
NI PXI-1042 Series
Power Supply Shuttle
The NI PXI-1042 Series power supply shuttle is a replacement part for the
NI PXI-1042 Series chassis.
Introduction
To minimize downtime caused by a power-supply failure, the
NI PXI-1042 Series chassis has a modular power supply shuttle. This
power supply shuttle includes the chassis power supply, cooling fans, and
fan-control circuitry. Key features of the power supply shuttle include:
• Universal AC input with automatic voltage and frequenc
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What You Need to Get Started ❑ NI PXI-1042 Series chassis (the unit being repaired) ❑ NI PXI-1042 Series power supply shuttle ❑ Read Me First: Safety and Radio-Frequency Interference ❑ NI PXI-1042 User Manual (provided with the chassis; also available at ni.com/support) ❑ #1 Phillips screwdriver Description Refer to Figure 1 to locate user-accessible components on the power supply shuttle. 1 2 3 4 5 6 7 8 10 9 1 Circuit Breaker 6 Remote Inhibit and Voltage Monitoring Connector 2 Universal AC I
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Installation and Maintenance The information in this section is for qualified service personnel only. Read the Read Me First: Safety and Radio-Frequency Interference document included with your kit before using the power supply shuttle. Caution Many components within the NI PXI-1042 Series chassis under repair are susceptible to static discharge damage. Service the chassis only in a static-free environment. Observe standard handling precautions for static-sensitive devices while servicing t
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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 su
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Efficiency ............................................... 70% typical Power disconnect ................................... The AC power cable provides main power disconnect. The chassis front-panel power switch causes the power supply to provide DC power to the CompactPCI/PXI backplane. DC Output DC current capacity (I ) MP NI PXI-1042 NI PXI-1042Q Voltage 0–50 °C 0–55 °C 0–40 °C +3.3 V 20 A 18 A 20 A +5 V 29 A 25 A 29 A +12 V Peripheral slots 3.5 A 3.5 A 3.5 A +12 V System slot 0.5 A 0.5
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Over-current protection ..........................All outputs protected from short circuit and overload with automatic recovery Over-voltage protection 3.3 V and 5 V...................................Clamped at 20 to 30% above nominal output voltage +12 V and –12 V .............................Clamped at 26 to 29 V difference between +12 and –12 V outputs Power supply shuttle MTTR...................Replacement in under 5 minutes Compliance and Certifications Safety This product meets the req
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Online Product Certification Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit ni.com/certification, search by model number or product line, and click the appropriate link in the Certification column. CE Compliance This product meets the essential requirements of applicable European Directives as follows: � 2006/95/EC; Low-Voltage Directive (safety) � 2004/108/EC; Electr
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