Choosing the Right DAQ Multiplexer Modules for Voltage Measurement
Application Notes
Selecting the right multiplexer module is crucial for achieving accurate, reliable voltage measurements in Data Acquisition (DAQ) systems. This application note explains why DAQ systems like the Keysight DAQ970A/973A are preferred for multi-channel, mixed-signal voltage measurements and how module selection directly affects safety, accuracy, and efficiency. It compares the DAQM910A, optimized for low-voltage precision, with the DAQM901A, designed for higher-voltage, general-purpose applications. By highlighting each module’s strengths, capabilities, and ideal use cases, this note helps engineers, researchers, and educators make informed decisions for their measurement setups — whether working with sensitive sensor outputs or robust industrial signals.