AMX Optima Instruction Manual page 111

3.
If the Destination Monitor's brightness needs to be increased or decreased, turn the Gain
potentiometer until the desired brightness is reached.
4.
If the picture is not sharp enough, turn the Peak potentiometer. (Increasing the peak removes the
graininess.) The image will still be skewed.
FIG. 66
Test image adjusted for gain and peak (image still skewed)
If the skew was adjusted previously, restore the default settings before proceeding (adjust skew by
turning the knob fully counterclockwise for R, G, and B in the steps below and save).
Additional potentiometer fine-tuning may be necessary after adjusting skew.
Skew and Volume
The Adjust knob on the CatPro RX Module can be used to compensate for the skew inherent in the
supported cables types by adjusting the video signal to eliminate the skew. It also adjusts the volume.
A small screwdriver works well for turning and pressing the knob. The knob does not have a mechanical
start or stop point. If the LED blinks when the knob is turned, the setting has reached its minimum or
maximum adjustment point.
The CatPro RX Module ships with factory-defined default settings of "no skew delay" for the skew on
R, G, and B and for "unity gain" on volume. Once the adjustment process has been successfully
completed and saved, the new settings replace the factory settings. The system will restore the new
settings whenever power is cycled. If necessary, restore the video factory default by adjusting the R, G,
and B fully counterclockwise and restore unity gain by adjusting the audio six clicks left from "full on"
(which is blinking); press the Adjust knob to save.
To abort the adjustment procedure at any time:
1. Hold the Adjust knob down until the LED turns amber, then release the knob.
The LED blinks 3 times and the RX Module reverts to its previous settings.
Cycling power on the CatPro RX Module during the adjustment procedure will have the same effect.
Individual settings are not stored in memory until all adjustments (Steps 2 through 10 below) have been
made.
To adjust the skew and volume using the CatPro RX Module:
1.
If the gain and peak have not already been adjusted, complete the steps on page 104.
2.
Press the Adjust knob.
The LED turns red; the module is placed in Red Skew Adjust mode.
3.
Turn the Adjust knob clockwise or counterclockwise until the red color bars align as closely as
possible with the green color bars.
4.
Press the Adjust knob.
The LED turns green; the module is placed in Green Skew Adjust mode.
Optima Instruction Manual
RGBHV+Stereo to CatPro I/O Boards (with RX Modules)
105