User guide
SMX System MultiMatrix Switcher • Operation 28
6.  If desired, select additional inputs can be set by pressing their input button.
7.  Press and release the Enter button (or wait 30 seconds) to exit the audio display and 
adjustment mode. The audio plane button extinguishes.
NOTE:  There is only one audio level setting per input on a specific plane. It is shared 
by the left and right audio inputs. The audio levels are stored in non-volatile 
memory. When power is removed and restored, they are retained.
If the audio is set to “follow-all” upon initial selection in step 2, the I/O plane 
and associated input and output buttons light amber. When an input or output 
button is held for 2 seconds (step 3), the I/O plane button flashes red.
Audio Input Level Adjustment Lighting
dB 
Level
Color
Buttons Lit 
or Flashing
+/-
dB 
Level
Color
Buttons Lit 
or Flashing
+/-
dB 
Level
Color
Buttons Lit 
or Flashing
+/-
24 green 12
>
9 green 5 flash
>
-6 red 3 flash
<
23 green 12 flash
>
8 green 4
>
-7 red 4 flash
<
22 green 11 
>
7 green 4 flash
>
-8 red 4 flash
<
21 green 11 flash
>
6 green 3
>
-9 red 5 flash
<
20 green 10 
>
5 green 3 flash
>
-10 red 5 flash
<
19 green 10 flash
>
4 green 2
>
-11 red 6 flash
<
18 green 9
>
3 green 2 flash
>
-12 red 6 flash
<
17 green 9 flash
>
2 green 1
>
-13 red 7 flash
<
16 green 8
>
1 green 1 flash
>
-14 red 7 flash
<
15 green 8 flash
>
0 not lit -15
red 8 flash
<
14 green 7
>
-1 red 1 flash
<
-16 red 8 flash
<
13 green 7 flash
>
-2 red 1 flash
<
-17 red 9 flash
<
12 green 6
>
-3 red 2 flash
<
-18 red 9 
<
11 green 6 flash
>
-4 red 2 flash
<
10 green 5
>
-5 red 3 flash
<
Viewing and Adjusting the Audio Output Volume
NOTE:  This function is only available when the unit is in lock mode 0.
The audio output volume of each output can be displayed and adjusted through a range of 
64 steps (1 dB per step, 0% through 100%). The audio output volume can be adjusted from 
the front panel, through RS-232 or RS-422, or through Ethernet.
NOTE:  See the SIS tables in SIS Configuration and Control on page 33 for adjustment 
methods using SIS commands.
Using the Front Panel
1.  Press and release the Esc button to clear all pending changes. The button flashes green 
once.
2.  Select the audio plane to be viewed or adjusted. The button lights red or amber.
3.  Press and hold any I/O button until the audio plane button flashes red (approximately 2 
seconds), and then release the button. All I/O buttons extinguish.










