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WaveForms™ SDK Reference Manual

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FDwfAnalogInChannelOffsetGet(HDWF hdwf, int idxChannel, double *pvoltOffset)

Parameters:

- hdwf – Interface handle.

- idxChannel – Channel index.

- pvoltsRange – Variable to receive the offset voltage obtained.

The function above returns for each AnalogIn channel the real offset level.

FDwfAnalogInChannelAttenuationSet(

HDWF hdwf, int idxChannel, double xAttenuation)

Parameters:

- hdwf – Interface handle.

- idxChannel – Channel index.

- voltsRange – Channel offset voltage to set.

The function above is used to configure the attenuation for each channel. When channel index is specified as -1,

each enabled AnalogIn channel attenuation will be configured to the same level. The attenuation does not change

the attenuation on the device, just informs the library about the externally applied attenuation.

FDwfAnalogInChannelAttenuationGet(

HDWF hdwf, int idxChannel, double *pxAttenuation)

Parameters:

- hdwf – Interface handle.

- idxChannel – Channel index.

- pxAttenuation – Variable to receive the attenuation value.

The function above returns for each AnalogIn channel the configured attenuation.

5.4 Trigger

The trigger is used for Single and Record acquisitions. For ScanScreen and ScanShift, the trigger is ignored.

To achieve the classical trigger types:

- None: Set FDwfAnalogInTriggerSourceSet to trigsrcNone.

- Auto: Set FDwfAnalogInTriggerSourceSet to something other than trigsrcNone, such as

trigsrcDetectorAnalogIn and FDwfAnalogInTriggerAutoTimeoutSet to other than zero.

- Normal: Set FDwfAnalogInTriggerSourceSet to something other than trigsrcNone, such as

trigsrcDetectorAnalogIn or FDwfAnalogInTriggerAutoTimeoutSet to zero.

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Digilent WaveForms Manuel d'utilisateur Page 24