EXFO CT440 Series, User Manual

Page: 119 / 169

Description of Functions
CT440
113
Configuration Functions
CT440_MeasureDark
Applicability All models of CT440.
Description This function measures the power on the selected detector and
stores it for power correction.
The measured power is automatically taken into account for
correction in the next power measurement.
In the GUI, this function is identical to the
Zero Detector X buttons in
the Referencing window.
Declaration int32_t CT440_MeasureDark (uint64_t uiHandle,
rDetector eDetector);
Parameters uiHandle
Handle returned from CT440_Init
Type: Input
Data type: unsigned int64
eDetector
Front panel detector number.
Possible values: DE_1; DE_2; DE_3; DE_4.
Type: Input
Data type: rDetector
Return value

0: the operation succeeded.

-1: the operation failed because of invalid uiHandle

-2: the operation failed because of missing calibration file

-3: the operation failed because of too much power on is
measured on the detector
Data type: int32
Example CT440_MeasureDark (uiHandle,DE_1);