Extron Electronics MAV 62 - Manual (Page 12)

MAV 62 Matrix Switcher • Operation MAV 62 Matrix Switcher • Operation
Operation, cont’d
3-5 3-4
3 . Press and release the button for the desired input. The
LED for the selected input lights.
If audio and video are tied from different inputs (audio
breakaway), and if you select video and audio for display,
the Video/+dB LED and the LED for the selected video
input light steadily and the Audio/-dB LED and the
LED for the selected audio input blink (figure 3-3).
Key: = blinking,
= on
B B
B
Figure 3-3 — Audio
breakaway indication
A tie can also be created by an
RS-232 device (see chapter 4,
RS-232/Remote Control).
Audio gain and attenuation
The audio level of each input can
be displayed and adjusted, from
the front panel or by using Extron’s
Windows-based control program,
through a range of -15dB to +9dB to
ensure that there is no noticeable
volume difference among sources.
1 . Press and release an input
button to select an input.
2 . Press and hold the I/O Conf/
Save button until the I/O LED
begins to blink, then release
the button. The input 1
through 5 LEDs display the
audio level for the selected
input and the Video/+dB and
Audio/-dB LEDs display the
polarity (+ or -).
Each input LED indicates 0dB
when off, 1dB when blinking
slowly, 2dB when blinking
quickly, and 3dB when lit.
The Video/+dB LED indicates
a positive (gain) level. The
Audio/-dB LED indicates a
negative (attenuation) level.
Both LEDs on indicate 0dB.
3 . Press and release the and buttons to increase and
decrease the audio level.
4 . Press and hold the I/O Conf/Save button until the I/O
LED turns off to save the gain value in memory and exit
the audio display and adjustment mode.
1. There is one audio level setting per input. The
setting is shared by the left and right audio inputs.
2. The audio level settings are stored in non-volatile
memory. When power is removed and restored, the
audio level settings are retained.
Viewing and adjusting an audio level
See figure 3-4 and figure 3-5 and the following steps for an
example of viewing and adjusting the audio level on a MAV 62
switcher.
LED key: = off (value 0 dB), = slow blink (value 1dB),
= fast blink (value 2dB), = on (value 3dB)
B1
B2
A
B2
B
CONF./SAVE
B2 C
+8dB
Figure 3-4 — Viewing the audio level
A Press and release an input button to select an input. The
associated input LED lights.
B Press and hold the I/O Conf/Save button until the I/O LED
starts blinking.
C The input 1 through 5 LEDs display the gain or attenuation
value. The Video/+dB and Audio/-dB LEDs display the
polarity. In Figure 3-4, the value +8dB is displayed.
D
Press and release the button several times to decrease the
audio level displayed in the input LEDs by 1dB per button
push. Note the input LED, Video/+dB LED, and audio/-dB
LED changes that occur each time the
button is pressed and
released. Figure 3-5 shows the result of pressing the button a
1 2 3 4 5
Input LED -dB +dB
dB
+9
+8
+7
+6
+5
+4
+3
+2
+1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
B2
B2
B2
B2
B2
B2
B1
B1
B1
B1
B1
B1
B1
B1
B2
B2
Key: = off (value 0 dB),
= slow blink (value 1dB),
= fast blink (value 2dB),
= on (value 3dB)
B1
B2