niFgen_CalAdjustDirectPathOutputImpedance
ViStatus niFgen_CalAdjustDirectPathOutputImpedance (ViSession vi, ViConstString channelName, ViInt32 configuration, ViReal64 loadImpedance, ViReal64 measuredSourceVoltage, ViReal64 measuredVoltageAcrossLoad);
Purpose
Calculates calibration constants pertaining to direct analog path output impedance. During external calibration, you can put the device in different configurations and take measurements of the resulting output voltage across different loads. Pass the configuration data, as well as the measurements, to this function to allow NI-FGEN to calculate the appropriate calibration constants and store them in the onboard EEPROM when the calibration session is committed.
Parameters
| Input | ||
| Name | Type | Description |
| vi | ViSession | Identifies your instrument session. vi is obtained from the niFgen_InitExtCal function and identifies a particular instrument session. |
| channelName | ViConstString | Specifies the name of the channel being calibrated.
Default Value: "0" |
| configuration | ViInt32 | Specifies the direct path output impedance configuration. |
| loadImpedance | ViReal64 | Specifies the impedance of the load across which the measurement passed in as measuredVoltageAcrossLoad is taken. |
| measuredSourceVoltage | ViReal64 | Specifies the analog output voltage measured across a very high-impedance load. |
| measuredVoltageAcrossLoad | ViReal64 | Specifies the analog output voltage measured across the load impedance specified in the loadImpedance parameter. |
Return Value
| Name | Type | Description | ||||||||
| Status | ViStatus | Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. You can examine the status code from each call to an NI-FGEN function to determine if an error occurred.
To obtain a text description of the status code, call the niFgen_error_message function. To obtain additional information about the error condition, call the niFgen_GetError function. To clear the error information from NI-FGEN, call the niFgen_ClearError function. The general meaning of the status code is as follows:
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