AT-GAIN-60
9
DC28V
AUDIO IN 2
INPUT GAIN
L
R
L
TX RX
R
3.4A
-22
-2
-4
-20
-19
-14
-9
CLASS 2 WIRING
24 / 70 / 100V OUT
CLASS 2 WIRING
dB
DC28V
AUDIO IN 2
INPUT GAIN
L
R
L
TX RX
R
3.4A
-22
-2
-4
-20
-19
-14
-9
CLASS 2 WIRING
24 / 70 / 100V OUT
CLASS 2 WIRING
dB
Panel
Description
2
4
6 7
8
9
11
13
15
16
1
3
5
10
12
14
17
Front
Rear
1 PWR
This LED indicator glows solid green when the unit
is powered. When set to standby mode, this LED
indicator glows solid amber.
2
1
/
2
These LED indicators display the currently selected
input. The active input will be indicated by a solid
green LED.
3
INPUT
Press this button to select the desired audio input.
4
Mute LED Indicator
This LED indicator will glow solid red when the audio
output is muted.
5
MUTE
Press this button to mute the audio output. Press the
button again to unmute the audio output.
6 VOL
Press the up-arrow button to increase the output
volume. Press the down-arrow button to decrease
the output volume. The LEDs on the Audio Output
Indicator will change each time one of these buttons
is pressed.
7
Audio Output Indicator
Displays the output audio level. If the volume level
peaks at the red indicator (0 dB), then clipping will
occur.
8
LAN
Connect an Ethernet cable from this port to the Local
Area Network (LAN).
9 RS-232
Connect the included 3-pin captive screw connector
from this port to an RS-232 controller or automation
system. Refer to
RS-232 (page 11)
for wiring
information.
10
AUDIO IN 2 (unbalanced)
Connect RCA cables, from an analog line output,
to these ports. Both analog stereo or two mono
connections are supported. Input impedance is
10 kΩ.
11
AUDIO IN 1
Connect the included captive screw connector, from
a balanced / unbalanced analog line output, to this
port. Input impedance is 20 kΩ. Refer to
Audio
Connectors (page 10)
for wiring information.
12 INPUT GAIN
Turn this pot to adjust the audio input gain in 4 dB
increments.
13
24 / 70 / 100V
Connect the included 2-pin captive screw connector
from this port to a distributed speaker system.
Before connecting the speakers, set the speaker
voltage using the
OUTPUT MODE
switch.
14
4 / 8 Ω OUT
Connect the included 4-pin captive screw connector
from this port to a pair of program / stereo speakers.
Before connecting the speakers, set the speaker
impedance using the
OUTPUT MODE
switch.
15
OUTPUT MODE
Slide this switch to set the correct speaker
impedance or voltage setting before connecting the
speakers.
16 RESET
Press and hold this button for 10 seconds to reset
the unit to factory-default settings. Refer to
Factory
Reset (page 20)
for more information.
17
DC 28V
Connect the included 28V DC power supply to this
power receptacle.
