Extron electronic 84 Viewing and adjusting the input audio level HVA models, Operation, cont’d

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	VU
+24	21			dBu	VU
+21	18			+24	21
+19	15			+21	18
+16	12			+19	15
+13	9			+16	12
+10	6			+13	9
+7	3			+10	6
+4	0			+7	3
+1	-3			+4	0
-2	-6			+1	-3
-5	-9			-2	-6
-8	-12	Audio	VCR	-5	-9
-12	-15			-8	-12
-15	-18	Inputs		-12	-15
-18	-21			-15	-18
Low Audio				-18	-21
				Output
Output Level
dBu	VU			Level
+24	21
+21	18				Audio System
+19	15		CrossPoint 300 Series Switcher
		Audio
+16	12
+13	9	Inputs
+10	6
+7	3		No Noticeable Volume
+4	0
+1	-3		Differences Between Sources
-2	-6
-5	-9
-8	-12
-12	-15
-15	-18		CD Jukebox
-18	-21
High Audio
Output Level
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.

3-24 CrossPoint 300 Matrix Switchers • Operation