IviDmm_GetApertureTimeInfo
IviDmmDeviceInfo Capability Group
C Function Prototype
ViStatus IviDmm_GetApertureTimeInfo (ViSession vi ViReal64 *apertureTime, ViInt32 *apertureTimeUnits);
Purpose
This function returns additional information about the state of the instrument. Specifically, it returns the aperture time and the aperture time units.
Parameters
| Inputs | Type | Description |
| vi | ViSession | The instrument handle that you obtain from the IviDmm_init or IviDmm_InitWithOptions functions. The handle identifies a particular IVI session. |
| apertureTime | ViReal64 | Returns the value of the IVIDMM_ATTR_APERTURE_TIME attribute. The units of this attribute depend on the value of the IVIDMM_ATTR_APERTURE_TIME_UNITS attribute. |
| Outputs | Type | Description |
| apertureTime Units |
ViInt32 | Returns the value of the IVIDMM_ATTR_APERTURE_TIME_UNITS attribute.
Valid Return Values: IVIDMM_VAL_POWER_LINE_CYCLES—Powerline cycles |