Analog Input >> General Properties >> Advanced >> Range >> Low

NI-DAQmx C Properties

Analog Input >> General Properties >> Advanced >> Range >> Low

Data Type: float64
Description: Specifies the lower limit of the input range of the device. This value is in the native units of the device. On E Series devices, for example, the native units is volts.

You can get/set/reset this property using:
  DAQmxGetAIRngLow
  DAQmxSetAIRngLow
  DAQmxResetAIRngLow