Analog Output >> General Properties >> DAC >> Reference Voltage >> Connect DAC Reference to Ground

NI-DAQmx C Properties

Analog Output >> General Properties >> DAC >> Reference Voltage >> Connect DAC Reference to Ground

Data Type: bool32
Description: Specifies whether to ground the internal DAC reference. Grounding the internal DAC reference has the effect of grounding all analog output channels and stopping waveform generation across all analog output channels regardless of whether the channels belong to the current task. You can ground the internal DAC reference only when Source is DAQmx_Val_Internal and Allow Connecting DAC Reference to Ground at Runtime is TRUE.

You can get/set/reset this property using:
  DAQmxGetAODACRefConnToGnd
  DAQmxSetAODACRefConnToGnd
  DAQmxResetAODACRefConnToGnd