SP-5000M-PMCL / SP-5000C-PMCL
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8. Other functions
8.1 Black level control
This function adjusts the setup level.
Variable range: -256 to 255 LSB (at 10-bit output)
8.1.1 Black Level Selector
The following items can be adjusted.
Monochrome:
Black Level All
Color:
Black Level All/ Black Level Red/ Black Level Blue
8.1.2 Black Level
The black level can be adjusted in the following range.
Monochrome:
Black Level All : -256
～
+255
Color:
Black Level All : -256
～
+255
Black Level Red/Blue: -512
～
+511
8.2 Gain control
In the SP-5000-PMCL, the gain control uses Analog Base Gain and Digital Gain.
Analog Base Gain can be set at 0dB, +6dB or +12dB. The digital gain is used for the master gain
setting.
For setting the gain,
1. Set analog gain (Select from 0dB, +6dB and +12dB)
2. Set digital gain
The master gain (DigitalAll) for both monochrome and color can be set x1(0dB) to
x16(+24dB) against the analog base gain. The resolution for gain setting is
0.01%/step which is 0.05dB to 0.08dB, depending on the setting value.
In the SP-5000C-PMCL, blue and red gain can be set from x0.45 to x5.62 against the
master gain setting and its resolution is x0.01/step.
Note: If the gain up function is used, it is recommended to use the analog base gain as the
master gain setting. For instance, if +12dB gain up is required, the analog base gain is set
at +12dB and no digital gain is added. This is because the signal-to-noise is better on
analog gain performance. However, the AGC function works only in digital gain.
Additionally, the analog base gain is effective in order to minimize the drop of the
histogram at higher gain settings. Please note that the analog base gain has less accuracy
due to its variability.
