DC Voltage Measurements Using the NI 9225 Module

Updated May 31, 2018

Reported In

Hardware

  • NI-9225

Software

  • LabVIEW

Driver

  • NI-DAQmx

Operating System

  • Windows

Issue Details

Can I measure both AC and DC using a single NI 9225 module?

Solution

The NI 9225 module is a 3-Channel, Simultaneous,Channel-to-Channel Isolated Analog Input Module. It can measure both AC and DC voltages. The NI 9225 Datasheet page 19 specifies that the NI 9225 has DC coupling and has over-voltage protection of +/- 450 VDC, So there should not be any problem.

Additional Information

The NI 9225 analog input channels are floating with respect to earth ground and each other. The incoming analog signal on each channel is conditioned, buffered, and then sampled by a 24-bit Delta-Sigma ADC.

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