User Guide

FlipTop Media Center with Storage Compartment Crestron QM-FTMCSC
QM-FTMCSC Microphone Control - Signal Descriptions
SIGNAL TYPE
AND NAME
DESCRIPTION
Digital inputs:
<
Mic1Mute>
<
Mic2Mute>
Mutes the MIC 1/LINE 1 or MIC 2/LINE 2 audio for as long
as the input is high.
High/1 (level sensitive) = Mute audio
Low/0 = Un-mute audio
Digital outputs:
<Mic1Mute-F>
<Mic2Mute-F>
Indicates that the corresponding MIC/LINE input is muted.
High/1 = Mic audio is muted; Low/0 = Mic audio is not muted
Digital inputs:
<
Mic1GatingEnable>
<
Mic2GatingEnable>
Enables noise gating for MIC 1/LINE 1 or MIC 2/LINE 2, for
as long as the input is high.
Gating eliminates unwanted background noise that could
prove distracting when amplified. The noise gate will not
pass an audio signal unless it is above the threshold, set by
the <GatingLevel> input.
High/1 (level sensitive) = Enable gating
Low/0 = Disable gating
Digital outputs:
<Mic1GatingEnable-F>
<Mic2GatingEnable-F>
Indicates the current status of the noise gate for the
corresponding MIC/LINE input.
High/1 = Gating is enabled
Low/0 = Gating is disabled
Digital outputs:
<
Mic1Gate>
<
Mic2Gate>
Indicates that the signal level on MIC 1/LINE 1 or MIC
2/LINE 2 has exceeded the <GatingLevel>.
High/1 = Gating level exceeded
Low/0 = Gating level not exceeded
Digital outputs:
<Mic1Nominal>
<Mic2Nominal>
Indicates that the signal level on MIC 1/LINE 1 or MIC
2/LINE 2 has exceeded the nominal level.
The nominal indication is reported at 10% of the maximum
level supported by the hardware, or 20dB below the input
clip level.
High/1 = Nominal level exceeded
Low/0 = Nominal level not exceeded
Digital outputs:
<
Mic1Clip>
<
Mic2Clip>
Indicates that the signal level on MIC 1/LINE 1 or MIC
2/LINE 2 has exceeded 50% of the maximum level
supported by the hardware, or 6dB below the input clip level.
This signifies a mic level that is too hot.
High/1 = Mic signal clipping
Low/0 = Mic level not clipping
Digital input:
<PhantomEnable>
Enables the 48V phantom power supply for as long as the
input remains high. (Phantom power is required by
condenser microphones, but should be disengaged for
dynamic microphones.)
High/1 (level sensitive) = Enable phantom power
Low/0 = Disable phantom power
Digital output:
<
PhantomEnable-F>
Indicates that phantom power has been enabled.
High/1 = Phantom power is on
Low/0 = Phantom power is off
Analog inputs:
<Mic1GatingLevel>
<Mic2GatingLevel>
Sets the threshold for gating. The noise gate is enabled for
as long as the <GatingEnable> input is high.
Valid gating values range from 0% to 100%.
Once the microphone audio rises above <GatingLevel> the
gate opens, allowing the signal to pass through.
If the <MicNominal> feedback pulses while the <MicGate>
feedback remains low, this indicates a threshold that is set
too high.
Continued on the following page
38 • FlipTop Media Center with Storage Compartment: QM-FTMCSC Operations & Installation Guide - DOC. 6307A