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Operation, cont'd
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.
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 3-41 — Audio gain and attenuation
1.
2.
3.
4.
5.
3-24
CrossPoint 300 Matrix Switchers • Operation
VU
21
18
15
12
9
6
3
0
-3
-6
-9
-12
VCR
Audio
-15
-18
Inputs
-21
VU
21
18
15
CrossPoint 300 Series Switcher
12
Audio
9
Inputs
6
3
0
-3
-6
-9
-12
-15
-18
CD Jukebox
-21
Press the Esc button to clear any input LEDs, output LEDs, or control LEDs
that are lit.
To enter the Audio mode, press and hold the Audio button until the LED
begins to blink, then release the button.
Press and release an input button to select an input. The output LEDs display
the audio level for the selected input and the Esc (
display the polarity (gain [+] or attenuation [–]).
Press and release the Esc ( ) and View (
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.
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.
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
Audio System
No Noticeable Volume
Differences Between Sources
) and View (
) buttons to increase and decrease
) LED
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