Crestron QM-RMCRX, Руководство по эксплуатации

Страница: 34 / 64

QuickMedia™ Receiver/Processor Crestron QM-RMCRX
(program left, program right and Mic mix out). Each preset can be labeled to
simplify identification.
The TrimBands are not labeled with actual frequency values since they can be
changed in the Digital Media Tools or by setting the full parametric filters in the
symbol. Trim presets can be used to modify the soundfield for different kinds of
music or presentations where you might want to emphasize the bass, or bring out
a treble frequency. Presets may be assigned a name to make identification easier.
Video Adjustments
The DMT program offers 100 presets for video skew adjustment. These
adjustments are designed to compensate for the varying distances that a video
signal must travel in the QM cable. The integrated skew compensation corrects
color separation problems that can occur when CAT5 cables have variations in
the pair lengths. The twisting of the cable pairs inside the cable sheath causes
this variation in length.
NOTE: Only one video preset is required for a single origination point
QuickMedia room.
In addition, peaking and boost adjustments are available to compensate for white
or black streaking.
Three bitmaps are supplied with the DMT software for adjusting the video skew,
peaking and gain. You can also browse for your own bitmap. These files are
shown unscaled and cropped to a portion of the screen, allowing access to the
skew adjustment tab while they are displayed.
The first bitmap consists of lines of black text on gray and white backgrounds,
and lines of blue text on gray and white backgrounds.
Text Test Pattern
If the text is blurred and the text color persists into the blank space after the text,
this is "black streaking" and you need to increase the peaking value. If you see
white bands persisting after the text or you see small white areas after the text,
you have "white streaking" and you need to decrease the peaking value. If you
see "blooming" or pixel areas that appear larger than normal, you need to
decrease the gain.
30
•
QuickMedia™ Receiver/Processor: QM-RMCRX Operations Guide - DOC. 6236A