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Operation, cont’d
CrossPoint 300 Matrix Switchers • Operation 3-24
Viewing and adjusting the input audio level (HVA models)
On HVA models, 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 3-41). The audio level can be adjusted from the
front panel or under RS-232/RS-422 control. The default audio level is 0 dB.
Audio
Inputs
Audio
Inputs
VCR
No Noticeable Volume
Differences Between Sources
Audio System
CD Jukebox
CrossPoint 300 Series 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
Figure 3-41 — 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 the Audio mode, press and hold the Audio button until the 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 and the Esc (
) and View ( ) LED
display the polarity (gain [+] or attenuation [–]).
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.
• 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.