NED
XCM8060SA_8040SA_6040SA
UME-0034-03
36
4.3 Multi-Slope Settings
The multi-slope function for XCM series cameras is set using the multi-slope
timing (mst) and multi-slope level (msl) functions. Multi-slope timing basically
defines the steepness ratio of each slope. Multi-slope level defines the data level at
which the steepness of the slope changes.
The procedure for setting 2 slopes is
described below:
①
Set the camera exposure mode to Free Run
②
Decide the required scan rate. This is the base to determine the exposure time.
③
Using the required exposure time from
②
, determine the exposure counter value.
In the “Counter” row of the “Clock & Integration” tab of the CLISBeeCtrl software,
enter the Counter value in the box on the right and click “Send”. The actual
exposure time will be calculated and displayed below.
Select the most appropriate Counter value (see the circled area below)
④
With a lens attached, adjust the focus to the subject. Adjust the lens aperture and
the brightness of the lighting so that the darkest @art of the subject reaches the
required data level. If the data level is too low even at the brightest illumination
level, increase the analog gain.
However, when raising gain, the range of the parameters for multi-slope setting
narrows. The multi-slope function is most effective when analog gain is set to
minimum (gax=0: x1)
⑤
Decide the steepness ratio of slope 1 and slope 2. By increasing this ratio, the
brightness of the subject is compressed, so that a brighter object can be captured.
The steepness ratio should be less than 10.
⑥
From the steepness ratio decided in
⑤
and the Counter value required in
③
, the
setting value for “mst”can be decided. Several examples are provided below:
