NED
UME-0027-03 XCM6040SAT2
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9 Dynamic Range Control (Multi-Slope Mode)
By setting “Multi-slope mode” using the CLISBee Control software, it is possible
to change the slope of the photoelectric conversion curve at multiple points in
order to increase the dynamic range of captured images.
In order to extend the dynamic range, you can send the commands “msl a, b, c”
to set the knee points of the linear response, and “mst d, e, f” to set the
integration time ratio of each slope. The greater the integration time ratio, the
more the dynamic range is extended; however the minimum value should not be
less than 1.
Only operates in “Multi Slope” (inm 3) and “Ext Multi” (inm 4) modes. This
function cannot be used in Free Run mode or standard external trigger
modes (inm 0, inm 1, inm 2).
The scan cycle becomes longer than normal
9.1 Operation in Factory Default Mode
As an example, take five levels of light intensity A to E (strong to weak). The 5
coloured lines/dots show the amount of incident light to the camera when
exposure time is set to 61. The factory default settings are “mst 0, 1, 10”; “msl 0,
5, 10”; “int *, 61” (exposure time).
1. Exposure starts at exposure time 0
2. At exposure time 50, the signal is reset to 1/3 of the saturation level.
“Reset” means that any signal above the set value (in this case 1/3 of the
saturation level) is discarded. With this first reset, the portions of signals
A-C which exceed the 1/3 saturation level are discarded, but D-E are
unaffected.
3. With a further exposure time of 10 (from 50 to 60), the signal is reset a
second time to 2/3 of the saturation level. With this second reset, the
portion of signal A which exceeds the 2/3 saturation level is discarded.
There is no effect on B-E from this reset.
4. Exposure stops at exposure time 61.
*Actual settings & exposure times may vary depending on the camera model being
used
