Crestron
QM-RMCRX
QuickMedia™ Receiver/Processor
variations in the pair lengths. Delay skew is the difference in time (measured in
nanoseconds) between the fastest and slowest pairs of a cable for a signal to
travel from one end of the cable to the other. To correct delay skew, the <
Skew
>
inputs add delay to the faster pairs, allowing the video signals to be presented in
synchronization.
Valid analog values for <_
Skew
> inputs range from 0 (for no delay) to 15 (for
15 nanoseconds).
NOTE:
The skew, peaking and boost signals should be set through Digital
Media Tools software while viewing the video test patterns. The explanations
presented here are for completeness of information.
The QM-RMCRX supports up to 100 skew presets for video. These presets are
programmable using Crestron Digital Media Tools (DMT) software or SIMPL
Windows. A skew preset stores all three <
Skew
> values, peak and boost
settings. The receiver can be connected to multiple transmitters, and each
connection may require its own skew preset. Thus when the receiver
communicates with transmitter #1, it may recall skew preset #1, when it
connects to transmitter #99, it may recall skew preset #99, and so forth.
All <
Save
> and <
Recall
> inputs are level sensitive, not edge-triggered. Thus
when <
SaveSkewPreset
> is driven high, the current <
Skew
> analog values will
be saved in the indicated <
SkewPreset#
>. If they change while
<
SaveSkewPreset
> is still high, they are saved again. Valid values for
<
SkewPreset#
> range from 1 to 100. Pulse save/recall when programming.
Similarly, when <
RecallSkewPreset
> is driven high the <
SkewPreset#
> will
be recalled and the skew compensation will be set to the preset values. Here the
<
Skew_F
> signals may have different values than their corresponding inputs.
If <
RecallSkewPreset
> goes high and <
SkewPreset#
> is set to an invalid or 0
value (out of the 1 to 100 range) all skew values will be cleared, and all signals
will pass with no delay. This is the same as recalling a preset in which every
skew is set to 0.
The QM-RMCRX applies peaking and boost to the video signal to compensate
for cable lengths up to 300 feet. These values are adjustable from 0% to 100%
and are programmable with SIMPL Windows or DMT software.
The analog <
Peaking
> input adjusts the sharpness and clarity of the video
image to compensate for loss of image quality over long cable lengths; the
analog <
Boost
> input compensates for high frequency attenuation. The analog
<
F
> feedback signals indicate the current peak and boost values.
Slot 7: C2I-RX-MIXER
The C2I-RX-Mixer module is built into slot 07 of the QM-RMCRX
QuickMedia control system and audio/video receiver.
The QM-RMCRX provides four independent audio inputs (via the CAT5 QM
port): Program Left, Program Right, Mic1 and Mic2. The onboard mixer can
mix any audio input into any of the three independent audio outputs: Program
Left, Program Right and Speech Audio (Mic Mix Out). A power amplifier
output duplicates the left/right program outputs and allows speakers to be
connected directly to the QM-RMCRX. An onboard four-band equalizer for the
Mic1 and Mic2 inputs applies equalization to the mic audio before mixing. Both
the mixer and mic EQ settings are programmable using Crestron's Digital Media
Tools (DMT) software, or with SIMPL Windows.
Operations Guide – DOC. 6236A
QuickMedia™ Receiver/Processor: QM-RMCRX
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