The NI SCC-PWR03 Power Supply Board delivers regulated multi-voltage output to National Instruments SCC series signal conditioning modules when integrated with SC-2345 or SC-2350 carrier blocks. This board conditions external DC input into the dual supply rails required by SCC module ecosystems, ensuring stable analog and digital power delivery for precision signal acquisition. The board accepts 7 VDC to 42 VDC input and generates +5 V for carrier logic and ±15 V for analog signal conditioning circuits. Input current draw is 325 mA at 12 VDC nominal. Reverse voltage protection extends to -42 VDC maximum, safeguarding against common field installation errors. Status indication integrates with front-panel LEDs on the host carrier module. Form factor: 3.5 by 1.2 by 0.7 inches. Power connection uses screw terminals on connector J1 (7-42V and GND). The SCC-PWR03 has been declared end-of-life by National Instruments but remains available through authorized third-party repair and distribution channels.
Technical Specifications
• Part Number: 183971-03
• Input Voltage Range: 7 VDC to 42 VDC
• Input Current: 325 mA at 12 VDC
• Output Voltages: +5 V (carrier modules), ±15 V (analog power)
• Reverse Voltage Protection: Up to -42 VDC maximum
• Dimensions: 3.5 × 1.2 × 0.7 inches
• Input Connection: Screw terminals J1 (7-42V positive, GND negative)
– Key Features
• Regulated dual-rail output topology for mixed-signal conditioning
• Reverse polarity protection rated to -42 VDC
• Status indication via host carrier module LEDs
• Wide input voltage acceptance (7–42 VDC) for flexible supply sourcing
– Typical Applications
• Analog input signal conditioning (strain gage, thermocouple, RTD, accelerometer)
• Current measurement modules (SCC-CI20)
• Voltage/current input-output acquisition
• Digital I/O and relay switching control
– Compatibility & Integration
Operates exclusively with NI SC-2345 and SC-2350 signal conditioning carriers. Supports all SCC series modules including SCC-AI isolated analog input, SCC-SG strain gage, and general-purpose SCC conditioning blocks. Integrates with E Series, M Series, and B Series multifunction DAQ devices when mounted in compatible carriers. Double-shielded cabling required for user-installed peripherals to meet EMC standards.
