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 Audio 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.
Each output LED indicates 1 dB of gain or
attenuation when blinking slowly, 2 dB
when blinking quickly, and 3 dB when
lit steadily. The Esc (
>
) and View (
<
)
LEDs display the polarity (gain [+] or
attenuation [-]). See the table at right.
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.
NOTES:• 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 LEDs
to Video and Audio lit
(video and audio selected
for configuration).
Input Audio Level Adjustment Displays
87
Output LED
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
S
S
S
F
F
F
S
F
S
F
S
F
S
F
S
S
F
F
S
View Esc
+18
+17
+16
+15
+14
+13
+12
+11
+10
+24
+23
+22
+21
+20
+19
6 5 4 3 2 1
876 5 4 3 2 1
F
S
F
S
F
S
F
S
F
-16
-17
-18
dB
+9
+8
+10
+12
+14
+16
+18
+20
+22
+7
+6
+5
+4
+3
+2
+1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
+17
+15
+13
+11
+24
+23
+21
+19
-16
-17
-18
S
F
= on, = blinking fast, = blinking slowly, = off
MPX 866 A Media Presentation Matrix Switcher • Operation 42
