Extron electronics MPX 866 A, User Manual

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Operation, cont’d
MPX 866 A Media Presentation Matrix Switcher • Operation
3-28
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 (fi gure 3-51). The audio level can be adjusted from the front panel or under
RS-232 or Ethernet control.
Audio
Inputs
Audio
Inputs
VCR
No noticeable
volume differences
between sources
Audio System
CD Jukebox
MPX 866 A
Media Presentation Switcher
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
PRESENTATION MATRIX SWITCHER
MPX 866 A
CONFIG
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9 10 11 12
9 10 11 12 13 14
COMPUTER INPUTS VIDEO INPUTS
VIDEO OUTPUTS COMPUTER/AUDIO OUTPUTS
Figure 3-51 — 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 Audio 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. Each output LED indicates 1 dB of gain
or attenuation when blinking and another 1 dB when lit steadily. The Esc (
>
)
and View (
<
) LEDs display the polarity (gain [+] or attenuation [-]. See the
table on the next page.
4. Press and release the Esc (
>
) and View (
<
) buttons to increase and decrease
the audio level by 1 dB per each push of the button, or press and
hold
the
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.
5. Press and release the Audio button to exit the Audio mode. The Audio LED
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
LEDs to Video and Audio lit (video and audio selected for confi guration).
im Vertrieb von CAMBOARD Electronics
www.camboard.de Tel. 07131 911201
Fax 07131 911203 ce-info@camboard.de