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Operation, cont’d
MAV 44 / 48 / 84 / 88 Matrix Switchers • Operation3-22
b. Return to the original audio gain setting by pressing and releasing the
or button (the opposite of the button you pressed in step a) the same
number of steps you pressed the opposite arrow button in step 1. In
example 8, this means pressing the button three times.
c. Add the dB value indicated by the highest-numbered lit output LED (no
output LEDs lit and both dB LEDs lit = 0 dB) and either of the following:
• The number of button presses from 0 dB, or
• The number of button presses from when the highest-numbered
output LED lit. In example 8:
Output 1 LED: 6 dB
+ 2 presses:
+2 dB
8 dB
d. The lit +dB or –dB LED indicates the gain (+) or attenuation (–).
3. Press and release the
button once to decrease the audio level (figure 3-34).
The LED flashes each time the button is pressed.
Press and release the
button several more times to continue to decrease the
audio level (figure 3-34). Note the output LED, +dB LED, and –dB LED
changes that occur each time the button is pressed and released.
Figure 3-34 shows the result of pressing the
button a total of 9 times to
change the value to -1 dB. Note that the +dB LED has turned off and that the
–dB LED is on to indicate a negative level.
VU
3
3
0
+
6
10
2
1
4
3
OUTPUTS
+dB
-dB
The -dB LED
indicates a negative
(attenuation) level.
In this example, the LEDs indicate audio attenuation in the –1 dB to –5 dB range.
The Output 1, Output 2, and Output 3
LEDs display the input's audio level range.
P
ress the button to
d
ecrease the input audio level
b
y 1 dB per button push.
The power LED blinks
frequently to indicate tha
t
the adjusted level is
properly set.
A VU meter connected
to output 1 indicates
that the adjusted level
is approximately the
same as the –10 dBV
internal level.
= lit, = unlit, = flickering LED
Figure 3-34 — Adjust the input audio level
If another input button is pressed and released, the gain value for the current
input is saved and the gain value for the newly selected input is displayed.
4. Press and release the Audio Setup button (figure 3-35). All audio changes are
saved.
I/O
A
UD
VID
AUDIO SETUP
+dB
-dB
Press the Audio Setup button
to exit Audio Setup mode.
T
he Audio Setup LED
t
urns off.
All input and outpu
t
LEDs turn off.
Figure 3-35 — Exit Audio Setup mode