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There are 2 ways to use this control.
a) Using the iScan Duo’s test pattern generator as a reference source
b) Using an external video source to generate the reference test patterns
Using iScan Duo’s Test Pattern Generator
1. Enable test pattern generator by pressing the ‘Test Pattern On/Off’ button on
the Duo’s remote or using the on-screen menu
Output Setup > Test Patterns > On
2. There are 11 levels of control under Gray Scale
0 IRE
10 IRE
20 IRE
30 IRE
40 IRE
50 IRE
60 IRE
70 IRE
80 IRE
90 IRE
100 IRE
3. The Duo automatically generates the relevant windowed test pattern for each
control above. For example when 50 IRE is selected, the Duo automatically
generates a 50 IRE signal.
4. Adjust Red, Green, Blue component to achieve to correct gray level.
The indicators on the on-screen menu has the same units as that of the
Color Gamut control (percentage of full range gamma corrected RGB)
Using a reference signal connected to iScan Duo’s input
The Duo’s test pattern generator should be turned off in this mode. Provide the
reference gray scale that needs to be calibrated and use the on-screen menu as
described in the previous section.