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SMC02G/SMC02F/Variants - Product Manual
5.7.3 Microphone
Relative
Output
Gain (VAR4/VAR12/VAR20 only)
Menu:
Configuration
Æ
System
Æ
Router
Æ
Inputs
Æ
Mic/Line
Æ
<
I/P #
nn
– MIC/LINE
nn
>
Æ
<
Zoned Fire Microphone
or
Paging Microphone
>
Æ
Audio
Æ
Gain
Æ
O/pGains
Possible values:
–40dB to 0dB (1dB steps)
System default configuration: ‘0dB’
Normally all input gains will be set to ‘balance’ each of the inputs, and the output gain will be set to give the
required level at each output. However, if any input is desired to have a different gain in a particular output or
outputs, then these inputs can be given a different gain relative to each appropriate output. This could be
used to e.g. avoid feedback for a microphone which is located in one of its output zones.
Ensure that the relative gain for each zone is set to the default level (0 dB).
Note that to simplify this process the Router displays the output name, and that the output names may have
been changed to zone names in the
Configuration
Æ
System
Æ
Router
Æ
Outputs
menu.
For each zone associated with the SMC02 configure the Relative Output Gain as follows:
a. Disable any ANS for the zone associated with the SMC02, by setting it to ‘Off’:
Menu:
Configuration
Æ
System
Æ
Router
Æ
Outputs
Æ
<
O/P #
yy
– OUTPUT
yy
>
Æ
ANS
Where
yy
is the output number and the OUTPUT
yy
is the output name, which may have been changed
to zone names.
Consult the system design documentation for zones associated with the SMC02.
b. Ensure that the Night Time Volume Control is inactive, by setting it to ‘Off’:
Menu:
Configuration
Æ
System
Æ
Router
Æ
Noise
Æ
Off
c. Ensure that all Volume Controls are set to maximum volume, i.e., control at position ‘11’.
d. Make broadcasts from the SMC02 microphone and confirm that they are free of acoustic feedback, and
is playing at the required volume level.
e. If feedback is encountered, reduce the Relative Gain for the associated zone until the feedback is
eliminated.
VAR4/12/20 Menu:
Configuration
Æ
System
Æ
Router
Æ
Inputs
Æ
Mic/Line
Æ
<
I/P #
nn
– MIC/LINE
nn
>
Æ
<
Zoned Fire Microphone
or
Paging Microphone
>
Æ
Audio
Æ
Gain
Æ
O/pGains
ACU/VAR8 Menu:
Configuration
Æ
System
Æ
Router
Æ
Inputs
Æ
Mic/Line
Æ
<
I/P #
nn
– MIC/LINE
nn
>
Æ
<
Zoned Fire Microphone
or
Paging Microphone
>
Æ
Audio
Æ
Gain
Æ
Output
f. Re-enable any ANS for the zone associated with the SMC02, by setting it to ‘On’:
Menu:
Configuration
Æ
System
Æ
Router
Æ
Outputs
Æ
<O/P #
yy
– OUTPUT
yy
>
Æ
ANS
g. If required, activate the Night Time Volume Control, by setting it to ‘On’:
Menu:
Configuration
Æ
System
Æ
Router
Æ
Noise
Æ
On
h. Set all Volume Controls to the required volume.
Issue: 02 complete, approved
Page 43 of 60
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