Configuring Auto Zero

To enable, enable once, or disable Auto Zero:

Note   The NI 4065 only supports the ON setting. For NI 4065 devices, Auto Zero is always ON. Auto Zero is an integral part of the signal measurement phase and adds no extra time to the overall measurement.

LabVIEW—Use niDMM Configure Auto Zero.

CVI, C++, or Visual Basic—Use niDMM_ConfigureAutoZeroMode.

AUTO (default) -1 NI-DMM chooses the Auto Zero setting based on the configured function and resolution.
OFF 0 Disables Auto Zero.
ON 1 The DMM internally disconnects the input signal following each measurement and takes a zero reading. It then subtracts the zero reading from the preceding reading.
ONCE 2 The DMM internally disconnects the input signal for the first measurement and takes a zero reading. It then subtracts the zero reading from the first reading and the following readings.