Analog Input >> General Properties >> Signal Conditioning >> Bridge >> Initial Bridge Ratio

NI-DAQmx C Reference Help

Edition Date: January 2019

Part Number: 370471AM-01

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Data Type: float64
Description: Specifies in volts per volt the ratio of output voltage from the bridge to excitation voltage supplied to the bridge while not under load. NI-DAQmx subtracts this value from any measurements before applying scaling equations. If you set Initial Bridge Voltage, NI-DAQmx coerces this property to Initial Bridge Voltage divided by Actual Excitation Value. If you set this property, NI-DAQmx coerces Initial Bridge Voltage to the value of this property times Actual Excitation Value. If you set both this property and Initial Bridge Voltage, and their values conflict, NI-DAQmx returns an error. To avoid this error, reset one property to its default value before setting the other.


You can get/set/reset this property using:

  DAQmxGetAIBridgeInitialRatio

  DAQmxSetAIBridgeInitialRatio

  DAQmxResetAIBridgeInitialRatio

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