LT-400CL
47
Important note:
Depending on the optics and/or illumination used together with the camera, it may
not be possible to fully compensate for shading.
Operating procedure for individual R, G and B channel shadings correction:
1. Before making adjustment,
approximately 30 minutes warming up is required.
2. Make sure the output signal is not saturated (80% of full output is recommended)
3. Set command PGC=2 and SDC=2.
4. Set command SDR to 0 to initiate shading correction.
5. If desired, set command PGR to 0 to activate pixel gain correction to correct for
pixel response non-uniformity.
6. Again set SDR=0 after running the pixel gain correction
(B) Color shading correction (SDR=1)
In this mode, shading correction of R and B signals is referenced to the G signal which
is the reference. When the Green channel detects “undulating” or “parabolic” type
shading, R and B channels are compensated to follow the same curve.
The calculation is based on the average value of 8 consecutive pixels
Important Note:
For this function, no reference value is stored in the camera.
Operating procedure for color shadings correction:
1. Before making adjustment,
approximately 30 minutes warming up is required.
2. Make sure the output signal is not saturated (80% of full output is recommended)
3. Set command PGC=2 and SDC=2.
Individual shading correction
per channel
Shading correction tracking
the green channel