User Guide User guide

Operation, cont’d
MVX Plus 128 VGA A Matrix Switcher • Operation
3-32
PRELIMINARY
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).