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Operation, cont'd
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.
dBu
+24
+21
+19
+16
+13
+10
+7
+4
+1
-2
-5
-8
-12
-15
-18
Low Audio
Output Level
dBu
+24
+21
+19
+16
+13
+10
+7
+4
+1
-2
-5
-8
-12
-15
-18
High Audio
Output Level
Figure 3-6 — Audio gain and attenuation
1.
2.
3.
4.
5.
3-34
MPX Plus 866 A Media Presentation Matrix Switcher • Operation
VU
21
18
15
12
9
VCR
6
3
Audio
0
-3
Inputs
-6
-9
-12
-15
-18
-21
COMPUTER INPUTS
VIDEO INPUTS
9 10 11 12 13 14
1 2 3 4 5 6 7 8
1 2 3 4 5 6
9 10 11 12 13 14
COMPUTER OUTPUTS
VIDEO OUTPUTS
VU
MPX Plus 866 A
21
18
15
12
9
6
3
Audio
0
Inputs
-3
-6
-9
-12
-15
-18
-21
CD Jukebox
Press the Esc button to clear any input buttons, output buttons, or control
buttons that may be lit.
To enter Audio mode, press and hold the Audio button until the button begins
to blink red, then release the button.
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
blinking quickly, and 3 dB when lit steadily. Green output buttons indicate a
gain (+) audio level and red buttons indicate an attenuation (–) level. See the
table on the next page.
Press and release the Esc (
the audio level.
Press and release the Audio button to exit the Audio mode. The Audio button
stops blinking.
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
CONTROL
I/O
CONFIG
ENTER
PRESET
VIEW
ESC
VIDEO
AUDIO
MPX PLUS 866 A
PRESENTATION MATRIX SWITCHER
No noticeable
volume differences
between sources
>
) and View (
<
) buttons to increase and decrease
Audio System
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