Extron electronic MAV Plus Viewing and adjusting the input audio level systems with audio BMEs

Operation, cont’d

6.Press and release the View button to exit View-Onlymode (figure 3-52).

Press the View button to exit View-Onlymode.

VIEW

All input buttons and output buttons return to unlit or background illumination.

The View button returns to unlit or background illumination.

Figure 3-52 — Press the View button to exit View-Onlymode

Viewing and adjusting the input audio level (systems with audio BMEs)

In systems that include a MAV Plus audio BME, 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 3-53). The audio level can be adjusted from the front panel incorporated in BME 0 or under RS-232/RS-422 or Ethernet control.

dBu	VU	Audio
+24	21	Inputs
+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

Low Audio

Output Level

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

VCR

1	2	3	4	5	6	7	8	9	10	11 12 13 14	15 16
17 18 19 20 21 22 23 24 25 26										27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42	43 44	45	46	47 48
49 50 51 52 53 54 55 56 57 58	59 60	61	62	63 64

1	2	3	4	5	6	7	8	9	10	11 12 13 14	15 16
17 18 19 20 21 22 23 24 25 26										27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42	43 44 45	46	47 48
49 50 51 52 53 54 55 56 57 58	59 60 61	62	63 64

MAV PLUS SERIES

MAV Plus 6464

Video BME (BME 0)

MAV PLUS SERIES

MAV Plus 6464

Audio BME (BME 1)

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

High Audio
Output Level	CD Jukebox

Figure 3-53 — Audio gain and attenuation

1.Press the Esc button to clear any input buttons, output buttons, or control buttons that may be lit.

2.To enter Audio mode, press and hold the Audio button until the button begins to blink red, then release the button.

3.Press and release an input button to select an input. The output buttons display audio level and polarity (+ or –) for the selected input. Each lit output button indicates 1 dB of gain or attenuation. Green output buttons indicate a gain (+) audio level and red buttons indicate an attenuation (–) level.

4.Press and release the Esc (>) and View (<) buttons to increase and decrease the audio level by 0.5 dB per push of the button.

3-32 CrossPoint 450 Plus and MAV Plus Switchers • Operation