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Operation, cont’d
MPX Plus 866 A Media Presentation Matrix Switcher • Operation
3-34
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 3-6). The audio level can be adjusted from the front panel or under
serial port or Ethernet control.
Audio
Inputs
Audio
Inputs
VCR
No noticeable
volume differences
between sources
Audio System
CD Jukebox
MPX Plus 866 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
ENTERPRESET
VIEW
ESC
PRESENTATION MATRIX SWITCHER
MPX PLUS 866 A
COMPUTER INPUTS
1
2
3
4
5
6 7
8
9
10
11 12
13
14
1
2
3
4
5
6
9
10
11
12
13
14
VIDEO INPUTS
COMPUTER OUTPUTS
VIDEO OUTPUTS
CONFIG
Figure 3-6 — 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 audio level and polarity (+ or –) for the selected input. Each output
button indicates 1 dB of gain or attenuation when blinking slowly, 2 dB when
blinkingquickly,and3dBwhenlitsteadily.Greenoutputbuttonsindicatea
gain (+) audio level and red buttons indicate an attenuation (–) level. See the
table on the next page.
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.