AMX Modula Instruction Manual page 89

Skew and Volume
The Adjust knob on the CatPro RX Module can be used to compensate for the skew inherent in the
supported cable 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 Modules ship with factory-defined default settings of "no skew delay" for the skew on R, G,
and B and for "unity gain" on the volume. Once the adjustment process is successfully completed and
saved, the new settings replace the factory settings. The system restores the new settings when 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), then save.
Test Image Files
Test image .pdf files for adjusting the display are provided on the AMX AutoPatch CD. The test image file is
opened* on the Source PC and subsequently displays on the Destination Monitor. The file names for the test
image .pdf begin with the resolution and end with "SkewPattern" (e.g., 1280x1024SkewPattern.pdf). Select
the file with the resolution that corresponds to the resolution of the source signal (ideally this should be the
native resolution of the Destination Monitor).
* Adobe Acrobat Reader is required to view the test image .pdf file. It is a free software program available
online at: www.adobe.com.
The following procedures explain how to:
Tip: Be sure that the source device sending the signal to the display monitor (or device) has a sharp
picture before you start.
To adjust the gain and peak using the RX Module potentiometers:
1.
On the Source PC, open the test image .pdf file that corresponds to the resolution of the Source device.
2. Route the source to the destination.
The test image appears on the Destination Monitor (the image will be distorted).
FIG. 48
Test image on Destination Monitor with distorted display
3. If the Destination Monitor's brightness needs to be increased or decreased, turn the Gain potentiometer
on the RX Module until the desired brightness is reached.
Modula Instruction Manual
Use the potentiometers to adjust the gain and peak
Use the Adjust knob to eliminate skew and adjust volume
Abort the skew adjustment procedure, if necessary
RGBHV+Stereo to CatPro Boards with TXs & RXs
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