Polycom ATX 200 Integrator Manual page 81

Polycom, Inc.
It is best to tilt the gray card slightly backwards so that it captures
some of the room lighting.
Pan, tilt, and zoom all three cameras until the gray card appears as
c
shown in Figure
If necessary, change the Focus value until the pattern on the gray card
d
is sharply focused.
Click Codec 2 and repeat steps
9
10 Click Codec 3 and repeat steps
11 Click Set White Balance.
The gray pattern on all displays should match. However, if you think that
you need to adjust the colors or check them more closely, select each codec
(depending on which one you want to change) and adjust the values for
the R gain and B gain as needed.
The R and B gains give you very fine control over white balance. Changing
one of the values by only one or two steps is barely noticeable on the
display.
Symptom
Too much red
Too much cyan
Too much magenta
Too much green
Too much blue
Too much yellow
Configuring the Displays, Cameras, and Audio
5-25.
Figure 5-25 Gray Card Onscreen
5 through 8.
5 through 8.
Adjustment
Decrease red
Increase red
Decrease red and blue
Increase red and blue
Decrease blue
Increase blue
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