Extron electronics CrossPoint 450 Plus 3248 HV, User Manual

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3-35
CrossPoint 450 Plus and MAV Plus Switchers • Operation
Viewing and adjusting the input audio level
(systems with audio BMEs)
In systems that include a MAV Plus audio BME, the audio level of each input can be
displayed and adjusted through a range of -18 dB to +24 dB, in 0.5 dB increments,
to ensure that there is no noticeable volume difference among sources (figure 3-5).
The audio level can be adjusted from the front panel or under serial port or
Ethernet port control. The default audio level is 0 dB.
Audio
Inputs
Audio
Inputs
VCR
No noticeable
volume differences
between sources
Audio System
CD Jukebox
MAV Plus 6464
Audio BME (BME 1)
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
POWER SUPPLY
PRIMARY
REDUNDANT
I/O CONFIG
MAV PLUS SERIES
AUDIO MATRIX SWITCHER
MAV Plus 6464
Video BME (BME 0)
ENTER PRESET
VIEW ESC
AUDIO VIDEO
1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 13
17 18 19 20 21 22 23 24 25 26 27 28 30 31 32 29
33 34 35 36 37 38 39 40 41 42 43 44 46 47 48 45
49 50 51 52 53 54 55 56 57 58 59 60 62 63 64 61
ENTER PRESET
VIEW ESC
AUDIO VIDEO ENTER PRESET
VIEW ESC
AUDIO VIDEO
I
N
P
U
T
S
1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 13
17 18 19 20 21 22 23 24 25 26 27 28
30 31 32 29
33 34 35 36 37 38 39 40 41 42 43 44 46 47 48 45
49 50 51 52 53 54 55 56 57 58 59 60 62 63 64 61
O
U
T
P
U
T
S
CONTROL I/O
POWER SUPPLY
PRIMARY
REDUNDANT
I/O CONFIG
MAV PLUS SERIES
VIDEO MATRIX SWITCHER
Figure 3-5 — Audio gain and attenuation
1 . Press the Esc button to clear any front panel button indications that may be lit.
2 . To enter Audio mode, press and hold the Audio button until the button starts
blinking red, then release it.
3 . Press and release an input button to select an input. The output buttons
display the audio level and polarity (+ or –) for the selected input; each output
button indicates 0.5 dB when flashing and 1 dB of gain or attenuation when
lit. Green output buttons indicate a gain (+) audio level and red buttons
indicate an attenuation (–) 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.