Disabling Unused Extensions

IviPwrMeter Class Driver

When you call the IviPwrMeter_init, the IviPwrMeter_InitWithOptions, or the IviPwrMeter_Reset function, the class driver disables extension capability groups that the program does not use by setting attributes of the unused extension group to values that disable that extension group.

The class driver disables extension capability groups by setting the following attributes to the noted default values:

Unused Extension Group	Invoked Attribute	Default Value Attribute Set to
IviPwrMeterChannelAcquistion	IVIPWRMETER_ATTR_CHANNEL_ENABLED	False
IviPwrMeterTriggerSource	IVIPWRMETER_ATTR_TRIGGER_SOURCE	Immediate
IviPwrMeterDutyCycleCorrection	IVIPWRMETER_ATTR_DUTY_CYCLE_CORRECTION_ENABLED	False
IviPwrMeterReferenceOscillator	IVIPWRMETER_ATTR_REF_OSCILLATOR_ENABLED	False

Note

The following extension groups are not disabled by the IviPwrMeter driver:

IviPwrMeterInternalTrigger

IviPwrMeterSoftwareTrigger

IviPwrMeterManualRange

IviPwrMeterAveragingCount

IviPwrMeterZeroCorrection

IviPwrMeterCalibration