The NI 778647-01 is a replacement power supply and fan shuttle assembly for NI PXI-1044 and PXI-1045 chassis. It delivers up to 500 W total power—providing 467 W available across the PXI-1044’s 14 slots—while maintaining thermal management through dual cooling fans and intelligent fan control. The modular design enables field replacement in less than five minutes, minimizing system downtime. A front-panel power switch controls DC output to the CompactPCI/PXI backplane, with integrated LED indication for power supply faults.
– Technical Specifications
• Input voltage: 100–240 VAC nominal; 90–264 VAC operating range
• Input frequency: 50/60 Hz nominal; 47–63 Hz operating range
• Input current: 10–5 A
• Over-current protection: 12 A circuit breaker
• DC output: Automatic recovery on overload or short-circuit
• Power rating: 500 W total (PXI-1044/1045)
• Rear panel interface: 9-pin D-SUB connector
• Mounting: Ten Phillips-head screws; removable via rear handles
• Operating temperature: 0 to 55 °C
• Storage temperature: -20 to 70 °C
• Acoustic emissions: 49 dBA (PXI-1044 chassis)
– Key Features
• Two-speed fan control: HIGH for maximum cooling; AUTO mode adjusts fan speed based on air intake temperature for reduced noise
• Front-panel power switch and integrated fault indicator
• Dual cooling fans with temperature-responsive control circuitry
• Rear-panel fan speed selector
– Typical Applications
Replacement of failed or aging power and thermal management modules in deployed PXI-1044 and PXI-1045 systems. Supports continuous operation of 3U PXI and 3U CompactPCI modules across industrial, automotive, aerospace, and laboratory test environments.
– Compatibility & Integration
Designed exclusively for NI PXI-1044 and NI PXI-1045 chassis. Compatible with all 3U PXI and 3U CompactPCI modules installed within these chassis platforms.
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