Example 8: Adjust The Input Audio Gain - Extron electronics MAV 44 Series User Manual

Example 8: Adjust the input audio gain

The following steps show an example in which an input audio level is viewed and
adjusted. The example shows the front panel indications that result from your
actions.
1. Press and hold the Audio Setup (I/O) button for approximately 2 seconds
(figure 3-32) until the Audio Setup LED lights.
Press and hold the button.
Figure 3-32 — Select Audio Setup mode
2. Press and release the Input 5 button (figure 3-33).
Press and release the Input 5 button.
INPUTS
4 5 6
The Input 5 LED lights to The Output 1, Output 2, and Output 3
indicate that input 5 is selected. LEDs display input 5's audio level range.
In this example, the LEDs indicate gain in the +6 dB to +10 dB range.
= lit, = unlit, = blinking LED
Figure 3-33 — Select an input
If the +dB and –dB LED are both lit they indicate an input gain of 0 dB.
Otherwise, you can determine the exact gain or attenuation using the
following procedure.
a.
2 seconds
AUDIO SETUP
The LED lights to indicate Audio Setup mode.
Release the Audio Setup button.
OUTPUTS
1 2 3 4
If one or more output LEDs are lit AND the +dB LED is lit, press and
release the button repeatedly until the highest-numbered lit output
LED goes out. Count the button presses. In example 8, assume a value
of +8 dB. It takes three presses of the
go out.
If one or more output LEDs are lit AND the –dB LED is lit, press and
release the button repeatedly until the highest-numbered lit output
LED goes out. Count the button presses.
If the +dB LED is lit and NO output LEDs are lit, press and release the
button repeatedly until the +dB and –dB LED are both lit, indicating
0 dB. Count the button presses.
If the –dB LED is lit and NO output LEDs are lit, press and release the
button repeatedly until the +dB and –dB LED are both lit, indicating
0 dB. Count the button presses.
MAV 44 / 48 / 84 / 88 Matrix Switchers • Operation
AUDIO SETUP
3
6
10
VU
A VU meter connected
to output 1 indicates
that the adjusted level
is approximately +9 dB
above the –10 dBV
internal level.
+dB
-dB
The power LED lights
steadily or blinks off only
occasionally to indicate
The +dB LED indicates
that the adjusted level is
a gain (positive) level.
too high.
button for the Output 1 LED to
0
3
+
3-21