Extron electronic MVX 128 manual Viewing and adjusting the input audio level

Operation, cont’d

4. Press and release the Enter button (figure 3-40). The configuration stored in memory location 13 is now the current configuration and can be viewed in the View-Onlymode (see example 4).

Press the Enter button to recall the preset.

CONTROL

ENTER PRESET VIEW ESC

The Enter and Preset LEDs return to the unlit state.

All input LEDs return to the unlit state.

Figure 3-40 — Press the Enter button

Viewing and adjusting the input audio level

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.

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

	dBu	VU
	+24	21
	+21	18
	+19	15
	+16	12
VCR	+13	9
	+10	6
Audio	+7	3
	+4	0
Inputs	+1	-3
	-2	-6
	-5	-9
	-8	-12
	-12	-15
	-15	-18
	-18	-21

Low Audio	Output
Output Level	Level

dBu	VU					Audio System
				MVX 128 A
+24	21
+21	18
+19	15
					No noticeable
+16	12
+13	9				volume differences
+10	6
+7	3	Audio			between sources
+4	0
		Inputs
+1	-3
-2	-6
-5	-9
-8	-12
-12	-15
-15	-18
-18	-21
High Audio
Output Level			CD Jukebox
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.

3-24 MVX 128 A VGA Matrix Switchers • Operation