Gain Control
Individual channel input sensitivity control
Individual channel input gain control adjustments are made by pressing the adjustment
buttons for the selected input button. The adjustment range is
-18
dB to
+24
dB, with
the default set at
0
dB.
NOTE:
Adjusting input sensitivity for all inputs ensures consistent signal to noise
ratios across all inputs.
Front panel input sensitivity adjustment
To make sure the correct input sensitivity is attained, do the following:
For the active input (with the LED lit), press the up
>
Input
level adjustment button
until the Normal LED is lit and the Peak LED only lights occasionally. Press the down
<
adjustment button for compensation if the Peak LED stays on too long.
NOTE:
Having the audio level beyond the point at which the peak LED flashes results
in a distorted output signal (clipping).
PEAK
NORMAL
SIGNAL
Signal threshold;
raise input gain.
Level has been
properly adjusted.
Level set too high,
lower input gain.
AUDIO LEVEL ADJUST
PEAK
NORMAL
SIGNAL
INPUT
PEAK
NORMAL
SIGNAL
VOICELIFT
PAGING
SENSOR
Figure 10.
Front Panel Audio Input Peak/Normal/Signal LEDs and Adjustment
Buttons
Individual gain adjustment can also be made by configuration software.
Repeat the steps for the other inputs as desired.
NOTE:
The
Peak
,
Normal
, and
Signal
LEDs function as the Aux input level indicator
only when the switcher is in the “Aux Adjust” mode.
10
PVS 407D Switcher • Operation
16
