niDMM Configure ADC Calibration

NI Digital Multimeters Help (NI-DMM 18.1)

Edition Date: March 2018

Part Number: 370384V-01

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Allows the DMM to compensate for gain drift since the last external or self-calibration. When ADC Calibration is ON, the DMM measures an internal reference to calculate the correct gain for the measurement. When ADC Calibration is OFF, the DMM does not compensate for changes to the gain.

Note  This feature is supported on the NI 4080/4081/4082 and the NI 4070/4071/4072.

niDMM Configure ADC Calibration

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instrument handle identifies a particular instrument calibration session.

You obtain this session handle from niDMM Initialize External Cal.

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ADC Calibration specifies the ADC calibration setting.

NI-DMM sets the ADC Calibration property to this value. ON enables ADC calibration. OFF disables ADC calibration. If you set the value to AUTO, NI-DMM determines whether to enable ADC calibration based on the measurement function and resolution that you configure. If you configure the NI 408x or NI 407x for a 6 1/2 digit and greater resolution DC measurement, NI-DMM enables ADC calibration. For all other measurement configurations, NI-DMM disables ADC calibration.

ON -1.0 The DMM measures an internal reference to calculate the correct gain for the measurement.
OFF 0 The DMM does not compensate for changes to the gain.
AUTO 1 The DMM enables or disables ADC calibration based on the configured function and resolution.
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error in describes error conditions that occur before this VI runs. If an error occurred before this VI runs, the VI passes the error in value to error out. This VI runs normally only if no error occurs before this VI runs. If an error occurs while this VI runs, it continues and sets its own error status in error out. Use niDMM Error Message to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

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status is TRUE (X) if an error occurred before this VI ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI ran. The default is FALSE.

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code is the error or warning code. The default is 0. If status is TRUE, code is a negative error code. If status is FALSE, code is 0 or a warning code.

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source describes the origin of the error or warning and is, in most cases, the name of the VI that produced the error or warning. The default is an empty string.

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instrument handle out returns a handle that you use to identify the instrument in all subsequent instrument driver VI calls.

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error out contains error information. If error in indicates that an error occurred before this VI ran, error out contains the same error information. Otherwise, it describes the error status that this VI produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.

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code is the error or warning code. The default is 0. If status is TRUE, code is a negative error code. If status is FALSE, code is 0 or a warning code.

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source describes the origin of the error or warning and is, in most cases, the name of the VI that produced the error or warning. The default is an empty string.

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