Extron electronic MVX VGA A manual Viewing and adjusting the output volume, Preliminary

PRELIMINARY

Operation, cont’d

Viewing and adjusting the output volume

The audio level of each output can be displayed and adjusted through a range of 100% (no attenuation) to 0% (maximum [76 dB] attenuation). The audio level can be adjusted from the front panel or via serial port control. The default is 100% (no attenuation).

NOutput volume is protected when front panel Lock mode 2 is selected. You can view the volume in Lock mode 2 but not adjust it from the front panel.

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 LED begins to
	blink, then release the button.
3.	Press and release an output button to select an output. The input LEDs
	display the volume level for the selected output. The switchers indicate the
	volume differently, depending on number of input LEDs; but as a general
	rule, the more LEDs that are lit, the higher the volume. The fewer LEDs that
	are lit, the lower the volume.
	For a more detailed analysis of decoding the displayed value, see “Reading
	the displayed volume”, on the next page.
4.	Press and release the Esc (>) and View (<) buttons to increase and decrease
	the audio volume by 1 dB per each press of the button.
	Or, press and hold either 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 save the audio settings and exit Audio
	mode. The Audio button stops blinking.

N• There is one audio volume level setting per output. The audio level setting is shared by the left and right audio inputs.

•The audio volume levels 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 button configuration to RGBHV and audio selected for tying (RGBHV and Audio LEDs lit).

•Pressing the Enter or Preset button also exits Audio mode. Pressing the Preset button changes to Recall Preset mode.

3-30 MVX VGA A Matrix Switchers • Operation