AXI 22 AT and AXI 44 AT • Installation and Operation
8
Front Panel Controls
OFF
ON
+42
+36
+30
+24
+18
+12
+6
0
GAIN
CLIP -
SIG -
+ 48V
ON
OFF
CONFIG
CONTROL
INPUTS
OUTPUTS
INPUT
1
2
3
4
1
2
3
4
1
2
CLIP -
SIG -
3
4
AXI 44 AT
AT (PoE)
POWER
12V
0.6A MAX
1
2
3
4
1
2
3
4
MIC / LINE INPUTS
OUTPUT
S
R
1
2
AT (PoE)
POWER
12V
0.5A MAX
1
2
MIC / LINE INS
OUTPUTS
R
OFF
ON
1
2
+42
+36
+30
+24
+18
+12
+6
0
GAIN
CLIP -
SIG -
+ 48V
ON
OFF
CONFIG
CONTROL
INPUTS
OUTPUTS
INPUT
1
1
2
2
CLIP -
SIG -
AXI 22 AT
GAIN LEVEL
GAIN LEVEL
A
C
D
E
F
G
H
I
I
B
A
C
D
E
F
G
H
I
I
B
A
B
C
D
E
A
B
C
D
E
A
Power LED Indicator
F
Gain Rotary Encoder
B
USB Config Port
G
Phantom Power Switch
C
Input Selector Button
H
Phantom Power Indicator LEDs
D
Input Indicator LEDs
I
Input and Output Signal and Clip LEDs
E
Input Level and Gain LED Stack
Figure 7.
AXI 22 AT and AXI 44 AT Front Panel Controls
A
Power LED Indicator
— This green LED blinks while the unit is powering on and lights
steadily when the unit is ready for use.
B
USB Config Port
— Connect a computer to this USB Mini-B port for device
configuration.
C
Input Selector Button
— Press this button to cycle through the device inputs. Select
an input to adjust gain, set phantom power, and read input levels for that input.
D
Input Indicator LEDs
— These LEDs light to indicate which input is currently selected.
Gain and phantom power adjustments are only applied to the currently selected input.
E
Input Level and Gain LED Stack
— The LED stack displays the input signal level of
the selected input, from no signal to -60 dBFS (first LED lit) up to 0 dBFS (all LEDs lit).
When the gain rotary encoder is rotated, the LED stack changes to display the input
gain level of the selected input. Input gain level continues to display for 2 seconds after
adjustment of the rotary encoder ceases. After this 2 second period, the LED stack
displays the input signal level.
The dB scale to the left of the LEDs indicates input gain level from 0 dB to +42 dB.
Each LED represents 6 dB of gain, while gain adjustments are made in 3 dB steps.
The LED will blink to indicate a 3 dB change in level, and light solid to indicate a 6 dB
change.
F
Gain Rotary Encoder
— The rotary encoder adjusts the input gain for the currently
selected input, from 0 dB to +42 dB in 3 dB steps. Use a small flat head screwdriver,
such as the provided Extron Tweeker, to turn the encoder clockwise to raise the gain
and counter-clockwise to lower the gain.
G
Phantom Power Switch
— This momentary switch turns +48 V phantom power on
or off for the currently selected input. Use a small flat head screwdriver, such as the
provided Extron Tweeker to adjust the phantom power switch. Push the switch up
to turn phantom power on and down to turn it off. The switch is neutral in the middle
position (default).
H
Phantom Power Indicator LEDs
—These green LEDs light steadily to indicate which
channels have phantom power applied.
figure 7
Front Panel Controls
