Extron Electronics MVX Plus 128 VGA A User Guide - Manual (Page 58)

Operation, cont’d
MVX Plus 128 VGA A Matrix Switcher • Operation 3-32
PRELIMINAR
Y
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 3-53). The audio level can be adjusted from the front panel or under
serial port or Ethernet control. The default audio level is 0 dB.
Audio
Inputs
Audio
Inputs
VCR
No noticeable
volume differences
between sources
Audio System
CD Jukebox
MVX Plus 128 VGA A
0
-3
-6
-9
-12
-15
Low Audio
Output Level
+4
+1
-2
-5
-8
-12
-18
-21 -15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
0
-3
-6
-9
-12
-15
High Audio
Output Level
+4
+1
-2
-5
-8
-12
-18
-21 -15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
0
-3
-6
-9
-12
-15
Output
Level
+4
+1
-2
-5
-8
-12
-18
-21 -15
-18
3 +7
6 +10
9 +13
12 +16
15 +19
18 +21
21 +24
VU dBu
AUDIO VIDEO
I/O CONTROL
ENTER PRESET VIEW ESC
INPUTS 1 2 3 4 5 6 7 8 9 10 11 12
OUTPUTS
1 2 3 4 5 6 7 8
MVX SERIES SWITCHER WIDEBAND MATRIX SWITCHER WITH ADSP™
Figure 3-53 — Audio gain and attenuation
1 . Press the Esc button to clear any input buttons, output buttons, or control
buttons that may be lit.
2 . To enter Audio mode, press and hold the Audio button until the button begins
to blink red, then release the button.
3 . Press and release an input button to select an input. The output buttons
display the audio level for the selected input; each output LED indicates 1 dB
when blinking slowly, 2 dB when blinking quickly, and 3 dB when lit steadily.
Green output buttons indicate a gain (+) audio level and red output buttons
indicate an attenuation (–) level. See the table on the next page to read the
displayed audio level.
4 . Press and release the Esc ( > ) and View ( < ) buttons to increase and decrease
the audio level.
5 . Press and release the Audio button to exit the Audio mode. The Audio button
stops blinking.
N • Pressing the Enter or Preset button also exits Audio mode. Pressing the
Preset button changes to Recall Preset mode.
• There is one audio level setting per input. The audio level setting is shared
by the left and right audio inputs.
• The audio level settings are stored in non-volatile memory. When power is
removed and restored, the audio level settings are retained.
• Exiting Audio mode by pressing the Audio button always returns the I/O
configuration to RGBHV and audio selected for configuration (RGBHV and
Audio buttons lit).