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Viewing and adjusting the input audio level
The audio level of each input can be displayed and adjusted through a range of
-18 dB to +24 dB to ensure that there is no noticeable volume difference among
sources (figure 3-42). The audio level can be adjusted from the front panel or via
serial port control. The default audio level is 0 dB.
dBu
VU
+24
21
+21
18
+19
15
+16
12
+13
9
+10
6
+7
3
Audio
+4
0
+1
-3
Inputs
-2
-6
-5
-9
-8
-12
-12
-15
-15
-18
-18
-21
Low Audio
Output Level
dBu
VU
+24
21
+21
18
+19
15
+16
12
+13
9
+10
6
+7
3
Audio
+4
0
Inputs
+1
-3
-2
-6
-5
-9
-8
-12
-12
-15
-15
-18
-18
-21
High Audio
Output Level
Figure 3-42 — Audio gain and attenuation
1.
Press the Esc button to clear any input LEDs, output LEDs, or control LEDs
that are lit.
2.
To enter Audio mode, press and hold the Audio button until the LED begins to
blink, then release the button.
3.
Press and release an input button to select an input. The output LEDs display
the audio level for the selected input.
•
Switchers with 8 output LEDs — Each output LED indicates 1 dB when
blinking slowly, 2 dB when blinking quickly, and 3 dB when lit steadily.
•
Switchers with 16 output LEDs — Each output LED indicates 1 dB when
blinking and 2 dB when lit steadily.
The Esc (
>
[–]). See the table on page 3-27 to read the displayed audio level.
4.
Press and release the Esc (
the audio level by 1 dB per each push of the buttons.
Or, press and hold either button to change the level at a rate of 3 dB per
second until the button is released or the upper or lower limit is reached.
VCR
INPUTS
1
2
3
4
5
6
7
8
9
10
11
12
CONTROL
I/O
1
2
3
4
5
6
7
8
VIDEO
AUDIO
ENTER
PRESET
VIEW
ESC
OUTPUTS
MVX SERIES
VGA MATRIX SWITCHER
WITH
ADSP
TM
MVX 128 VGA A
CD Jukebox
) and View (
<
) LEDs display the polarity (gain [+] or attenuation
>
) and View (
MVX VGA A Matrix Switchers • Operation
dBu
VU
+24
21
+21
18
+19
15
+16
12
+13
9
+10
6
+7
3
+4
0
+1
-3
-2
-6
-5
-9
-8
-12
-12
-15
-15
-18
-18
-21
Output
Level
Audio System
No noticeable
volume differences
between sources
<
) buttons to increase and decrease
3-25
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