Atlona reserves the right to make changes to the hardware, packaging, and documentation without notice.
AT-GAIN-120
3
Atlona, Inc. (“Atlona”) Limited Product Warranty
Coverage
Atlona warrants its products will substantially perform to their published specications and will be free from defects
in materials and workmanship under normal use, conditions and service.
Under its Limited Product Warranty, Atlona, at its sole discretion, will either:
• repair or facilitate the repair of defective products within a reasonable period of time, restore products to their
proper operating condition and return defective products free of any charge for necessary parts, labor and
shipping.
OR
• replace and return, free of charge, any defective products with direct replacement or with similar products
deemed by Atlona to perform substantially the same function as the original products.
OR
• refund the pro-rated value based on the remaining term of the warranty period, not to exceed MSRP, in cases
where products are beyond repair and/or no direct or substantially similar replacement products exist.
Repair, replacement or refund of Atlona products is the purchaser’s exclusive remedy and Atlona liability does not
extend to any other damages, incidental, consequential or otherwise.
This Limited Product Warranty extends to the original end-user purchaser of Atlona products and is non-transferrable
to any subsequent purchaser(s) or owner(s) of these products.
Coverage Periods
Atlona Limited Product Warranty Period begins on the date of purchase by the end-purchaser. The date contained on
the end-purchaser ‘s sales or delivery receipt is the proof purchase date.
Limited Product Warranty Terms – New Products
• 10 years from proof of purchase date for hardware/electronics products purchased on or after June 1, 2013.
• 3 years from proof of purchase date for hardware/electronics products purchased before June 1, 2013.
• Lifetime Limited Product Warranty for all cable products.
• 3 years from proof of purchase date for all Refurbished (B-Stock) hardware and electronic products purchased
on or after June 1, 2013.
Remedy
Atlona recommends that end-purchasers contact their authorized Atlona dealer or reseller from whom they
purchased their products. Atlona can also be contacted directly. Visit www.atlona.com for Atlona’s contact
information and hours of operation. Atlona requires that a dated sales or delivery receipt from an authorized dealer,
reseller or end-purchaser is provided before Atlona extends its warranty services. Additionally, a return merchandise
authorization (RMA) and/or case number, is required to be obtained from Atlona in advance of returns.
Atlona requires that products returned are properly packed, preferably in the original carton, for shipping. Cartons not
bearing a return authorization or case number will be refused. Atlona, at its sole discretion, reserves the right to reject
any products received without advanced authorization. Authorizations can be requested by calling 1-877-536-3976
(US toll free) or 1-408- 962-0515 (US/international) or via Atlona’s website at www.atlona.com.
Exclusions
This Limited Product Warranty excludes:
• Damage, deterioration or malfunction caused by any alteration, modication, improper use, neglect, improper
packaging or shipping (such claims must be presented to the carrier), lightning, power surges, or other acts of
nature.
AT-GAIN-120
4
Atlona, Inc. (“Atlona”) Limited Product Warranty
• Damage, deterioration or malfunction resulting from the installation or removal of this product from any
installation, any unauthorized tampering with this product, any repairs attempted by anyone unauthorized by
Atlona to make such repairs, or any other cause which does not relate directly to a defect in materials and/or
workmanship of this product.
• Equipment enclosures, cables, power supplies, batteries, LCD displays, and any accessories used in conjunction
with the product(s).
• Products purchased from unauthorized distributors, dealers, resellers, auction websites and similar unauthorized
channels of distribution.
Disclaimers
This Limited Product Warranty does not imply that the electronic components contained within Atlona’s products
will not become obsolete nor does it imply Atlona products or their electronic components will remain compatible
with any other current product, technology or any future products or technologies in which Atlona’s products may
be used in conjunction with. Atlona, at its sole discretion, reserves the right not to extend its warranty oering in
instances arising outside its normal course of business including, but not limited to, damage inicted to its products
from acts of god.
Limitation on Liability
The maximum liability of Atlona under this limited product warranty shall not exceed the original Atlona MSRP for
its products. To the maximum extent permitted by law, Atlona is not responsible for the direct, special, incidental or
consequential damages resulting from any breach of warranty or condition, or under any other legal theory. Some
countries, districts or states do not allow the exclusion or limitation of relief, special, incidental, consequential or
indirect damages, or the limitation of liability to specied amounts, so the above limitations or exclusions may not
apply to you.
Exclusive Remedy
To the maximum extent permitted by law, this limited product warranty and the remedies set forth above are
exclusive and in lieu of all other warranties, remedies and conditions, whether oral or written, express or implied.
To the maximum extent permitted by law, Atlona specically disclaims all implied warranties, including, without
limitation, warranties of merchantability and tness for a particular purpose. If Atlona cannot lawfully disclaim
or exclude implied warranties under applicable law, then all implied warranties covering its products including
warranties of merchantability and tness for a particular purpose, shall provide to its products under applicable law.
If any product to which this limited warranty applies is a “Consumer Product” under the Magnuson-Moss Warranty
Act (15 U.S.C.A. §2301, ET SEQ.) or other applicable law, the foregoing disclaimer of implied warranties shall not
apply, and all implied warranties on its products, including warranties of merchantability and tness for the particular
purpose, shall apply as provided under applicable law.
Other Conditions
Atlona’s Limited Product Warranty oering gives legal rights, and other rights may apply and vary from country to
country or state to state. This limited warranty is void if (i) the label bearing the serial number of products have been
removed or defaced, (ii) products are not purchased from an authorized Atlona dealer or reseller. A comprehensive
list of Atlona’s authorized distributors, dealers and resellers can be found at www.atlona.com.
AT-GAIN-120
5
Important Safety Information
The lightning ash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence
of uninsulated “dangerous voltage” within the product’s enclosure that may be of sucient magnitude to constitute a
risk of electric shock to persons.
Das Symbol des Blitzzeichens innerhalb eines gleichseitigen Dreiecks soll den Benutzer davor warnen, dass
innerhalb des Gehäuses gefährlich hohe Spannung an berührbaren Teilen anliegt. Die Spannung ist hoch genug um
bei Berührung zu einem gefährlichen elektrischen Schlag zu führen!
三角形內帶有箭頭符號的閃電,旨意在提醒用戶產品外殼內存在未絕緣的“危險電壓”可能會造成人體觸電危險
Вспышка молнии с символом стрелки в треугольнике предназначена для предупреждения пользователя о
наличии неизолированного «опасного напряжения» в корпусе продукта, которое может иметь достаточную
величину, чтобы представлять опасность поражения электрическим током для людей
Le ash lumineux dans le symbole de la èche du triangle équilatéral est destiné à alerter l’utilisateur de la présence
d’une «tension dangereuse» non isolée dans l’enceinte du produit qui peut être susamment importante pour
constituer un risque d’électrocution pour les personnes
Il simbolo del lampo con la punta di una freccia, all’interno di un triangolo equilatero, avvisa l’utente della presenza di
“tensioni pericolose” non isolate all’interno del contenitore del prodotto che possono essere sucientemente elevate
da costituire un rischio di folgorazione per le persone.
El símbolo del rayo con punta de echa dentro de un triángulo equilátero alerta al usuario de la presencia de “voltaje
peligroso” no aislado en el interior del producto que puede ser de una magnitud suciente como para constituir un
riesgo de descarga eléctrica para las personas.
AT-GAIN-120
6
Important Safety Information
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCT THE RISK OF
DO NOT OPEN ENCLOSURE OR EXPOSE
The exclamation point within an equilateral triangle is intended to alert the user to
the presence of important operating and maintenance instructions in the literature
accompanying the product.
The information bubble is intended to alert the user to helpful or optional operational instructions in the literature accompanying the product.
ELECTRIC SHOCK
TO RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS
INSIDE REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this product near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8. Do not install or place this product near any heat
sources such as radiators, heat registers, stoves, or
other apparatus (including ampliers) that produce
heat.
9. Do not defeat the safety purpose of a polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding
type plug has two blades and a third grounding
prong. The wide blade or the third prong are
provided for your safety. If the provided plug does
not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the
product.
11. Only use attachments/accessories specied by
Atlona.
12. To reduce the risk of electric shock and/or damage
to this product, never handle or touch this unit or
power cord if your hands are wet or damp. Do not
expose this product to rain or moisture.
13. Unplug this product during lightning storms or when
unused for long periods of time.
14. Refer all servicing to qualied service personnel.
Servicing is required when the product has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the product, the product has been
exposed to rain or moisture, does not operate
normally, or has been dropped.
FCC Statement
FCC Compliance and Advisory Statement: This hardware device complies with
Part 15 of the FCC rules. Operation is subject to the following two conditions: 1)
this device may not cause harmful interference, and 2) this device must accept any
interference received including interference that may cause undesired operation. This
equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a commercial installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed or used in accordance with the instructions, may cause harmful interference
to radio communications. However there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment o and on, the user is encouraged to try to correct the interference by one or more of the following
measures: 1) reorient or relocate the receiving antenna; 2) increase the separation between the equipment and the
receiver; 3) connect the equipment to an outlet on a circuit dierent from that to which the receiver is connected;
4) consult the dealer or an experienced radio/TV technician for help. Any changes or modications not expressly
approved by the party responsible for compliance could void the user’s authority to operate the equipment. Where
shielded interface cables have been provided with the product or specied additional components or accessories
elsewhere dened to be used with the installation of the product, they must be used in order to ensure compliance
The Atlona Gain™ 120 (AT-GAIN-120) is a compact power amplier designed for low or high impedance
applications. A mode selector switch allows it to deliver two channels of 60 watts each into 4 or 8 ohms, or a single
channel of 120 watts at 70 or 100 volts. This Class-D amplier is energy ecient, ENERGY STAR® qualied, and is
also convection-cooled to allow installation in conference rooms and quiet installation environments without the need
for fans. In addition to the amplied speaker output, a line level audio output allows the incoming audio to be fed
into an additional amplier or audio system. The Gain 120 is controllable via TCP/IP or external trigger, and can be
integrated with Atlona AV switchers and HDBaseT™ receivers for a wide variety of sound reinforcement applications.
Features
• Selectable low or high-impedance operation.
»2 x 60 watts @ 4 or 8 ohms.
»1 x 120 watts @ 70 or 100 volts.
• Class-D ecient amplier design.
• ENERGY STAR® qualied.
• Convection cooled – no need for fans.
• Available AES67 / Dante™ networked audio interface (AT-GAIN-NET) – receives two-channel audio from
OmniStream AV encoders or compatible audio devices.
• Optional AT-RACK-1RU rack shelf highly recommended for rack installation.
• Automatic standby after 25 minutes of inactivity to minimize power consumption.
• Rear panel input level controls for setting audio system gain staging.
• Integrated protection circuitry automatically activates in the event of clipping, short circuit, thermal overload,
and more.
• Low inrush current to prevent audible “thumps” when multiple amps are powered on simultaneously.
• Balanced analog audio output for pass-through to an additional amplier or audio system.
• Integrated ve-band equalizer.
• TCP/IP control of volume level, muting, and EQ.
• Ideal for IP-based control from Atlona Velocity Control System.
• Trigger port ideal for occupancy sensor to remotely power down amplier or wake from standby.
• Front panel signal status LEDs for power, signal presence, real-time volume level, device identication, and
internal protection activation.
• Rack-mountable 1U, half rack width enclosure.
• Includes installation guide, power cable (US), and captive screw connectors.
Package Contents
1 x AT-GAIN-120
2 x Captive screw connector, 2-pin
1 x Captive screw connector, 4-pin
2 x Captive screw connector, 5-pin
1 x IEC power cord
1 x Installation Guide
AT-GAIN-120
9
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
Panel Description
GAIN
Front
Rear
1
PWR
TM
4
LAN
510791412
L
R
ANALOG IN
NET AUDIODEVICE ID
IP
RESET RESET
LRLR
LINE OUT
TRIGGERMODE
4 / 8 Ω OUT70V / 100V OUT
CLASS 2 WIRINGCLASS 2 WIRING
LR
-9
-4
-14
-19
-20
-22
dB
INPUT GAIN
-9
-4
-22
dB
8Ω100V
-2
4Ω
-2
-14
-19
-20
23
VOL LEVEL
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
MODEL:
AT-GAIN-120
68111315
1 LED indicators
Displays the current state of the unit. Refer to LED
Indicators (page 19) for more information.
2 VOL LEVEL
Displays the output audio level.
3 FW
Connect a USB-to-mini USB cable to this port from a
computer for rmware updates.
4 LAN
Connect an Ethernet cable from this port to the Local
Area Network (LAN).
5 Removable Faceplate
Remove this faceplate to install the AT-GAIN-NET
(not included) card. Refer to Network Audio Card
Installation (page 40) for more information.
6 ANALOG IN
Connect an audio source to this port using the
included 5-pin captive screw connector. Refer to
Audio Connectors (page 11) for wiring information.
7 RESET
Press and hold this button for 10 seconds to reset
the unit to factory-default settings. Refer to Factory
Reset (page 27) for more information.
9 IP RESET
Press and hold button this button for 10 seconds to
switch between DHCP and static IP mode. Refer to
IP Conguration (page 15) for more information.
Also press and hold for 3 seconds to bring the unit
out of hibernation mode. Refer to Power Modes
(page 20) for more information.
10 TRIGGER
Use this port to toggle the unit between on and
standby or awaken the unit from hibernation mode.
11 4 / 8 Ω OUT
Connect a pair of 4 or 8 ohm speakers (lowimpedance) to this port using the included 4-pin
captive screw connector.
12 INPUT GAIN
Use a regular screwdriver to adjust the input gain
level for left and right channel.
13 70V / 100V OUT
Connect a distributed speaker system (highimpedance) to this port using the included 2-pin
captive screw connector.
14 MODE
Slide the switch to select between 4Ω, 8Ω, 70V, or
100V modes.
8 LINE OUT
Use the included 5-pin captive screw connector
to connect to another AT-GAIN-120, audio DSP, or
audio mixer. Refer to Audio Connectors (page 11)
for more information.
AT-GAIN-120
15 PWR
Connect from a power source to the AT-GAIN-120
using the included IEC power cord.
10
Installation
Audio Connectors
The AT-GAIN-120 provides two audio ports which provide analog audio input and output. The ANALOG IN port can
be used to connect an audio digital signal processor (DSP) or other audio source device. Balanced or unbalanced
wiring is supported.
The LINE OUT port can be used to connect an audio output device or daisy-chain to another amplier.
NOTE: The LINE OUT port only outputs analog audio. This port cannot be used to output
digital audio from the optional AT-GAIN-NET card. Also, volume mute, using the web GUI or the
VOUTMute command, will mute the LINE OUT pass-through.
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of each wire.
3. Connect the wires as shown, using either balanced or unbalanced wiring.
ANALOG IN / LINE OUT
The wiring for the ANALOG IN and LINE OUT ports, support either
balanced or unbalanced audio, as shown below. Both ports use the
included 5-pin captive screw connectors.
Balanced audio using XLR connectorsUnbalanced audio using RCA connectors
-
-
Rear View
GNDGND
+
21
3
-
+
-
2 1
3
Rear View
+
Side ViewSide View
GND
NOTE:The LINE OUT port is a xed-level analog output, only. There is no D/A conversion when
using the optional AT-GAIN-NET card.
+
GND
4 / 8 Ω OUT
Connect program/stereo speakers to the included 4-pin captive screw
connector, then connect the terminal block to the 4 / 8 Ω OUT port.
When connecting program / stereo speakers, set the MODE switch to
either 4 Ω or 8 Ω, depending upon the speakers impedance.
AT-GAIN-120
11
Installation
70V / 100V OUT
Connect a distributed speaker system to the included 2-pin captive
screw connector, then connect the terminal block to the 70V / 100V
OUT port. When connecting program / stereo speakers, set the MODE
switch to either 70V or 100V, depending upon the speakers.
Trigger
The AT-GAIN-120 provides a TRIGGER port allowing the AT-GAIN-120 to be connected to an occupancy sensor.
Voltage levels for this port are as follows:
Voltage levelFunction
Voltage is 0 or less than 3 VO
Voltage is 3 V or greater (30 V max.)On
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of each wire.
3. Connect the wires as shown.
AT-GAIN-120
12
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
Installation
Connection Instructions
The AT-GAIN-120 can be used with an optional network audio card, which supports Dante and AES76 audio streams.
If this card will be installed, refer to Network Audio Card Installation (page 40) for more information before
continuing with the following instructions. This network card is sold separately and is available from Atlona.
1. Connect an analog audio source, using the included 5-pin captive screw connector, to the AUDIO IN port.
Use the desired wiring conguration, on the previous page. Both balanced and unbalanced wiring are
supported.
2. Connect an analog audio output device, using the included 5-pin captive screw connector, to the LINE OUT
port. Use the desired wiring conguration, on the previous page. Both balanced and unbalanced wiring are
supported.
NOTE: Analog or NET audio (with optional card), are selectable from the web GUI, Atlona
Velocity™, or thrid-party control using the API. Refer to the Stereo / Mono Audio Power Amplifer
120 Watts Application Programming Interface, on the Atlona web site for more information.
In addtion, the LINE OUT port only outputs analog audio. This port cannot be used to output
digital audio from the optional AT-GAIN-NET card.
3. Determine the use-case scenario of the AT-GAIN-120. The AT-GAIN-120 can be congured as either one of the
following. Only one type of speaker connection is permitted at a time.
• Distributed speaker system (high impedance)
Set the MODE switch to the required voltage setting: 70V or 100V. This mode is used for commercial
applications and longer speaker cable runs.
• Program speakers / stereo (low impedance)
Set the MODE switch to the impedance setting of the speakers being connected: 4Ω or 8Ω.
This mode is used for consumer applications and shorter speaker cable runs.
LR
LAN
L
ANALOG IN
-9
-14
-19
-20
IP
RESET RESET
R
LRLR
LINE OUT
TRIGGERMODE
-22
dB
4 / 8 Ω OUT70V / 100V OUT
CLASS 2 WIRINGCLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-22
dB
-4
8Ω100V
-2
4Ω
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
Program / stereo speakers (low impedance)
Distributed speakers (high impedance)
4. Connect the speakers to the proper port on the AT-GAIN-120, based on the selection made in the previous step.
5. Set the MODE switch to the proper setting, based on the type of speaker connection that is being used.
6. Connect the LAN port to a network switch for set up and control of the unit.
7. OPTIONAL: Connect the included 2-pin captive screw connector from the TRIGGER port to an automation
control system.
8. Connect the included IEC power cord to the power receptacle.
9. Connect the IEC power cable to an available electrical outlet.
AT-GAIN-120
13
Program Speakers
Generic
SPEAKER SYSTEMS
Installation
Connection Diagram
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Generic
SPEAKER SYSTEMS
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Audio
Audio
Audio
Audio
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
PWR
TM
GAIN
Distributed Speakers
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
VOL LEVEL
NET AUDIODEVICE ID
AT-GAIN-120
LAN
AT-UHD-CLSO-840
HDMI
Blu-ray player
INFO
POWER ENTER
FCN CANCEL EDID
HDMI
HDMI
AT-UHD-CLSO-840
HDMI
Precision Hardware Codec
I
0
4
media4
Codec
Media Player
IMPORTANT: When connecting speakers, either use a distributed speaker system or program/
stereo speakers. The AT-GAIN-120 does not support simultaneous distributed and program speaker
connections.
AT-GAIN-120
14
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
Basic Operation
IP Conguration
The AT-GAIN-120 is shipped with DHCP enabled. Once connected to a network, the DHCP server (if available), will
automatically assign an IP address to the unit. Execute the arp -a command at the Windows command line or use an
IP scanner to locate the AT-GAIN-120 on the network.
If the AT-GAIN-120 is unable to detect a DHCP server, within 15 seconds, then the unit will be assigned the following
IP conguration:
• IP address 192.168.1.254
• Subnet mask 255.255.0.0
• Gateway 192.168.1.1
If a static IP address is desired, the unit can be switched to static IP mode. Use one of the following procedures to
switch between DHCP and static IP mode. 192.168.1.254 is the default static IP address.
Using the Rear Panel
1. Make sure the AT-GAIN-120 is powered.
2. Press and hold the IP RESET button for approximately 10 seconds.
IP RESET button
LR
LAN
L
ANALOG IN
-9
-14
-19
-20
IP
RESET RESET
R
LRLR
LINE OUT
TRIGGERMODE
-22
dB
4 / 8 Ω OUT70V / 100V OUT
CLASS 2 WIRINGCLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-22
dB
-4
8Ω100V
-2
4Ω
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
3. Release the IP RESET button once the PWR LED indicator on the front panel begins to ash. The number of
ashes will indicate the currently selected IP mode.
POWER LED ashesDescription
TwoStatic IP mode
FourDHCP mode
4. Once the unit has changed IP modes, the unit will shut down. To restart the unit, disconnect then reconnect the
power cable.
5. The unit is now set to the new IP mode and ready for use.
AT-GAIN-120
15
Basic Operation
Using Commands
Use the IPStatic and IPDHCP commands to switch between DHCP and static IP mode using Telnet. Refer to the
Application Programmers Interface documentation for more information. All commands and their arguments are
case-sensitive.
• Setting static IP mode
1. Connect to the AT-GAIN-120 using Telnet.
2. At the command line, execute the IPDHCP command using the o argument, as shown.
IPDHCP o
3. Execute the IPStatic command. This command requires three arguments: the desired IP address of the
AT-GAIN-120, the subnet mask, and the gateway address. All arguments must be entered in dot-decimal
notation. The following is an example:
IPStatic 192.168.1.112 255.255.255.0 192.168.1.1
4. Power-cycle the AT-GAIN-120.
5. The unit is now set to static IP mode and ready for use.
• Setting DHCP mode
1. Connect to the AT-GAIN-120 using Telnet.
2. At the command line, execute the IPDHCP command using the on argument, as shown. All characters are
case-sensitive.
IPDHCP on
3. Power-cycle the AT-GAIN-120
4. The unit is now set to DHCP mode and will be assigned an IP address by the DHCP server (if present).
AT-GAIN-120
16
Basic Operation
Using the Web GUI
The Network page (page 32) in the web GUI allows the option for the AT-GAIN-120 to use either DHCP or static IP
mode. In order to access the web GUI, the IP address of the AT-GAIN-120 must be known.
1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Network tab, located on the side menu bar.
• Setting static IP mode
a. Click OFF, next to DHCP.
b. Enter the required information in the IP Address, Subnet, and Gateway elds.
• Setting DHCP mode
a. Click ON, next to DHCP.
4. Click the Save button to save the changes.
AT-GAIN-120
17
Basic Operation
5. The following message box will be displayed:
6. Click OK to accept the changes or click Cancel to abort changes and return to the Network page.
AT-GAIN-120
18
Basic Operation
LED Indicators
The LED indicators on the front panel, provide information on the current state of the AT-GAIN-120. Refer to the table
below for more information.
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
GAIN
PWR
TM
NET AUDIODEVICE ID
VOL LEVEL
LED IndicatorStateDescription
PWRSolid green
O
Unit is powered.
Unit is not powered.
• Check the power cable between the AT-
GAIN-120 and the electrical outlet.
• Make sure that the electrical outlet is live.
Rapid ashing green
Firmware update is in progress. Refer to Updating
the Firmware (page 36) for more information.
SIGNALSolid greenAn active signal is present on the selected input.
DEVICE IDO
Flashing green
ANALOG INSolid green
O
NET AUDIOSolid green
O
VOL LEVELSolid green
Solid amber
Solid red
Unit is not in device ID mode.
Unit is in “blink” mode. This LED indicator will ash
once each second, and can be used to help physi-
cally identify the unit in a rack shelf.
The ANALOG IN port is the active input.
The ANALOG IN port is not the active input.
The INPUT port on the network card is the active
input. This LED indicator is only functional when the
optional AT-GAIN-NET card is installed. Note that
this LED indicator does not indicate the presence of
an audio signal.
The INPUT port is not the active input.
Acceptable range for output volume.
Output volume level is approaching audio clipping.
Audio clipping.
AT-GAIN-120
19
Basic Operation
Power Modes
The following section discusses the power mode features which have been integrated into the AT-GAIN-120.
Power modes are located under the Control tab within the web GUI.
1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Control tab, located on the side menu bar. The Control Settings section will be displayed.
Powering On or O
Click the OFF option to power-o the AT-GAIN-120. When powered-o, audio output is disabled but both the LAN
port and INPUT port (AT-GAIN-NET audio card, only) will remain active. To power-on the AT-GAIN-120, after it has
been powered-o, any one of the following methods may be used:
• Press and hold the IP RESET button for a minimum of 3 seconds, but not more than 5 seconds.
• Pull the TRIGGER port from low to high. Unit Trigger must be enabled for this to function.
• Set Power to the ON setting, in the web GUI.
• Route Dante / AES67 audio.
Auto Power Down mode
Enabling this mode will automatically power-down the AT-GAIN-120 if no audio input signal is present on either the
INPUT port (AT-GAIN-NET audio card, only) or the ANALOG IN port, after the specied time interval. When the AT-
GAIN-120 enters Auto Power Down mode, the Power option will be set to OFF and the front-panel LED indicators will
turn o. In Auto Power Down mode, power consumption is limited to 2.2 W. By default this feature is enabled.
Note that when this mode is enabled, the AT-GAIN-120 only monitors the existence of an audio input signal, not the
physical audio connection. Refer to the next page for instructions.
AT-GAIN-120
20
Basic Operation
1. Click the ENABLE option, if it is not selected.
2. Set the time interval, which must elapse, before the AT-GAIN-120 powers-down. The default setting is 15
minutes.
3. Click the Save button.
Hibernation mode
Enabling this mode will place the AT-GAIN-120 into a very-low power mode where power consumption is limited to
0.5 W. When in hibernation mode, there will be no audio output or network communication. The PWR LED indicator
will blink once every second to indicate that the AT-GAIN-120 is in hibernation mode. By default this feature is
disabled.
To wake the AT-GAIN-120 from hibernation mode, use one of the following methods:
• Press and hold the IP RESET button on the rear panel for approximately 3 seconds, but no longer that 5 seconds, using the end of a paper clip or other pointed object.
• Pull the trigger high using a control system such as Atlona Velocity. Note that even if the Unit Trigger option is
set to DISABLE, this method will still wake the AT-GAIN-120.
1. Click the ENABLE option, if it is not selected. The following dialog will be displayed:
WARNING: If exiting hibernation mode, do not hold the IP RESET button for longer than 5 seconds.
If this occurs, then the AT-GAIN-120 will switch IP modes.
To cancel, before entering hibernation mode, click the CANCEL button. Otherwise, once the dialog time expires,
the AT-GAIN-120 will be placed in hibernation mode. To wake the AT-GAIN-120, use one of the methods listed
above.
AT-GAIN-120
21
Basic Operation
Input Switching
When the optional AT-GAIN-NET card is installed, switching between the ANALOG IN and the audio input on the AT-
GAIN-NET card can be performed either manually or automatically. The following section covers both methods.
The AT-GAIN-NET card is available from Atlona.
Manual Switching
1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Audio tab, located on the side menu bar. The Audio and Equalization settings will be displayed.
4. Click the Inut Selection drop-down list to select the desired audio input. The currently selected audio input will
be display in both the web GUI and on the front panel LED indicators. Refer to LED Indicators (page 19) for
more information.
AT-GAIN-120
22
Basic Operation
Auto Switching
When auto-switching is enabled, the AT-GAIN-120 will automatically switch audio inputs, based on the presence of
an input signal. Auto-switching is enabled, by default. If the AT-GAIN-NET card is not installed, this feature will not
have any eect.
NOTE: In order to Telnet to the AT-GAIN-120, the IP settings must be set correctly. Refer to IP
Conguration (page 15) for more information.
1. Establish the IP address of the AT-GAIN-120.
2. Launch a Telnet client and connect to the AT-GAIN-120. In this example, the built-in Telnet client, which is
included with Windows 10, is used:
a. Click the magnifying glass icon, in the lower-left corner of the Windows desktop.
b. Type cmd, then press [ENTER]. The Command Prompt window will be displayed.
c. At the prompt, type telnet. The following will be displayed:
Welcome to Microsoft Telnet Client
Escape Character is ‘CTRL+]’
Microsoft Telnet>
d. Type the letter o, followed by the IP address of the AT-GAIN-120. For example:
Microsoft Telnet>o 10.20.200.75
e. Press [ENTER]. If the connection was successful, the following text will be displayed:
Welcome to TELNET
f. Type AutoSW on, then press [ENTER]. Specifying the on parameter will enable auto-switching. The AT-
GAIN-120 will verify that auto-switching is enabled, by echoing the command line to the screen:
AutoSW on
g. To disable auto-switch, type AutoSW o at the command line.
AT-GAIN-120
23
Basic Operation
Network Audio
The AT-GAIN-120 supports Dante and AES67 audio streams with the addition of the optional AT-GAIN-NET audio
card, which can be purchased from Atlona. Refer to Network Audio Card Installation (page 40) for information on
card installation.
For setup and control of Dante / AES67 audio routing and conguration, refer to the Audinate Dante Controller
software. AMS 2.0 and the web graphical interface of the AT-GAIN-120 supports basic network, control, and audio
level adjustments.
IMPORTANT: The AT-GAIN-120 must be connected within the same network segment as the Dante
Controller, in order to utilize mDNS.
Dante Software Conguration
1. Download the Audinate Dante Controller software from the following URL:
NOTE: The AT-GAIN-120 was tested using Audinate Dante Controller software v4.0.6.5 and Java
v1.8.0. Atlona recommends using Audinate Dante Controller software v4.0.6.5 or higher.
2. Make sure that an Ethernet cable is connected from the INPUT port on the rear panel to the network.
3. Launch the Dante Controller software.
The AT-GAIN-NET network audio card will appear as NetAudio-xxxxx, where xxxxx refers to the last ve
hexadecimal digits of the network card MAC address.
AT-GAIN-NET card
AT-GAIN-120
24
Basic Operation
4. Click the icon, next to the NetAudio-xxxxx card, under Dante Receivers, to view the channels. The ATGAIN-NET audio card has a maximum of two channels of audio. Refer to the Dante Controller User Guide for
details on operation.
Click to expand
Enabling AES67 Support
In order to route AES67 audio over IP, both the transmitter and receiver must support AES67 and have this option
enabled.
1. Double click the network card, under Dante Receivers
AT-GAIN-120
25
2. A separate window will open. Click the AES67 tab.
3. Click the New drop-down list and select Enabled.
Basic Operation
4. A message box will be displayed prompting to conrm AES67 is to be enabled. Click Yes .
5. Another message box will be displayed. In order for AES67 to be enabled, the card must be rebooted. Click Ye s
to reboot the network card.
6. AES67 is now enabled.
AT-GAIN-120
26
Basic Operation
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
Volume Control
Output audio level is controlled hrough the built-in web GUI. Volume control only aects the 4 / 8 Ω OUT and 70V /
100V OUT ports. Adjusting the audio output volume does not aect the LINE OUT port, as this port is a xed-level
output. The LINE OUT port is designed to be connected to a pre-amp device.
1. Log in to the web GUI. Refer to Introduction to the Web GUI (page 28) for more information.
2. Click the Audio menu.
3. Use the Volume slider, under the Equalization section, to adjust the output volume.
4. Click the slider controls on the 5-band graphic equalizer to adjust the audio frequency output, if desired. By
default, the graphic equalizer produces a “at” response.
Factory Reset
If necessary, the AT-GAIN-120 can be reset to factory-default settings. Note that the AT-GAIN-120 will be placed in
DHCP mode, as part of the reset procedure. The AT-GAIN-120 can also be reset through the web GUI. Refer to the
Control page (page 33) for more information.
1. Make sure the unit is powered-on.
2. Press and hold the RESET button for 10 seconds, using the end of a paper clip or other pointed object.
3. Release the RESET button.
RESET button
LR
-9
-14
-19
-20
IP
RESET RESET
L
R
LAN
ANALOG IN
LRLR
LINE OUT
TRIGGERMODE
-22
dB
4 / 8 Ω OUT70V / 100V OUT
CLASS 2 WIRINGCLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-4
-22
dB
8Ω100V
-2
4Ω
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
AT-GAIN-120
27
The Web GUI
Introduction to the Web GUI
The AT-GAIN-120 includes a built-in web GUI. Atlona recommends that the web GUI be used to set up the
AT-GAIN-120, as it provides intuitive management of all features.
The AT-GAIN-120 is shipped with DHCP enabled. Once connected to a network, the DHCP server will automatically
assign an IP address to the unit. Use an IP scanner to determine the IP address of the AT-GAIN-120. If a static
IP address is desired, refer to IP Conguration (page 15). The default static IP address of the AT-GAIN-120 is
192.168.1.254.
1. Launch a web browser.
2. In the address bar, type the IP address of the AT-GAIN-120.
3. The Login page will be displayed.
4. Type admin, using lower-case characters, in the Username eld.
5. Type Atlona in the Password eld. This is the default password. The password eld is case-sensitive. When the
password is entered, it will be masked. The password can be changed, if desired. Refer to Users page (page
34) for more information.
6. Click the Login button or press the ENTER key on the keyboard.
AT-GAIN-120
28
The Web GUI
7. The Status page will be displayed.
8. To logout of the web GUI at any time, click Logout on the side menu bar. Once logged out, the AT-GAIN-120 will
display the login screen.
Menu Bar
The window on the left side of the screen is the menu bar. The menu system is divided into three sections:
Home, Settings, and Conguration. When the mouse is moved over each menu item, it will be highlighted in black.
Click the menu item to go that page.
Menu bar
AT-GAIN-120
29
Status page
The Web GUI
Download Log
Click this button to download a log of command events
to the computer’s hard disk.
Model
The SKU of this product.
Firmware
The current rmware version installed.
MAC Address
The MAC address of the AT-GAIN-120.
Serial Number
The serial number of the AT-GAIN-120.
Temperature
The current internal ambient temperature of the AT-
GAIN-120.
Operating Time
The time in which the unit has been in the “on” state
since it was last rebooted.
Save
Click this button to save the system settings to a
local le. System settings les are saved in .bin
(binary) format. The default system settings lename
is systemsettings.bin. It is recommended to save the
system settings before performing a rmware update.
Status (progress bar)
Displays the status of saving and loading system settings
les.
Browse
Click this button to select the desired system settings
le. Click the Load button to upload the settings le to
the AT-GAIN-120.
Load
Click this button to upload the selected settings le to
the AT-GAIN-120. While the system settings le is being
loaded, the Status progress bar will display the current
progress.
AT-GAIN-120
30
Firmware page
The Web GUI
Current Firmware
The current rmware version installed.
Status (progress bar)
Displays the status of loading new rmware during a rmware update procedure.
Browse
Click this button to select the rmware le. Click the Load button to begin the update procedure. Refer to Updating
the Firmware (page 36) for more information.
Load
Click this button to upload the selected rmware le to the AT-GAIN-120. While the system settings le is being
loaded, the Status progress bar will display the current progress.
AT-GAIN-120
31
The Web GUI
Network page
After pressing the Save button, a reboot message will appear at the top of the web GUI. The AT-GAIN-120 must be
rebooted when any of the network settings have changed.
DHCP
Click the ON button to enable DHCP. Click the OFF
button to enable static IP mode. In static IP mode, the IP
Address, Subnet, and Gateway elds can be modied.
IP Address
Enter the IP address of the AT-GAIN-120 in this eld.
This eld can only be changed when DHCP is set to
OFF.
Subnet
Enter the subnet mask in this eld. This eld can only be
changed when DHCP is set to OFF.
Gateway
Enter the gateway (router) IP address in this eld. This
eld can only be changed when DHCP is set to OFF.
Telnet Port
Enter the Telnet listening port in this eld. The default
port is 23.
HTTP
Enter the HTTP listening port in this eld. The default
port is 80. This eld cannot be modied.
Hostname
Enter the desired hostname in this eld. By default, the
hostname is the product (SKU) plus the last ve digits of
the unit serial number.
Telnet Login Mode
Click the ON button to prompt for username and
password credentials. Username and password
credentials are the same as the web GUI login
credentials. Click the OFF button to create an open
Telnet session that does not require login credentials.
The default setting is OFF.
Save / Cancel
Click the Save button after any changes have been
made. Click the Cancel button to abort changes.
IP Timeout
Enter the time-out interval (in seconds) in this eld.
This eld represents the time interval before the TCP/IP
connection times out.
AT-GAIN-120
32
Control page
The Web GUI
Power
Click the ON button to power-on the AT-GAIN-120. Click the OFF button to power-o the unit.
Auto Power Down
Enables or disables auto power down mode. Refer to Auto Power Down mode (page 20) for more information.
Auto Power Down Time (min)
Specify the time interval before the AT-GAIN-120 goes into auto power down mode. Refer to Auto Power Down
mode (page 20) for more information.
Hibernation
Enables or disables hibernation mode. Refer to Hibernation mode (page 21) for more information.
Unit Trigger
Enables or disables the trigger.
Save / Cancel
Click the Save button to apply changes. Click the Cancel button to abort changes.
Factory Default
Click this button to reset the AT-GAIN-120 to factory-default settings.
Blink
Click the Blink button to start blinking the DEVICE ID LED indicator. This feature is useful to identify the unit when
multiple units are being used.
AT-GAIN-120
33
Users page
The Web GUI
Current Username
The administrator username. This eld cannot be changed.
Password
Enter the password for the administrator in this eld. Special characters (e.g. #, %, @, &, etc.) are not permitted.
Change Admin Password
• Old password
Enter the current password in this eld. The default password is Atlona.
• New Password
Enter the new password in this eld.
• Conrm Password
Verify the new password by entering it in this eld.
Save / Cancel
Click the Save button to apply all changes. Click the Cancel button to abort changes.
AT-GAIN-120
34
Audio page
The Web GUI
Input Selection
Click this drop-down list to select the audio input: Analog or Net Audio. The Net Audio selection will only be
available if the optional AT-GAIN-NET card is installed. This card is available from Atlona.
Output Status
Displays the current output impedance setting.
Equalization (Graphic, 5-band)
Click and drag each of these sliders to adjust the output frequency range. Each band has a range from -10 dB to
+10 dB. The following table provides a general breakdown of each frequency in the audio spectrum.
SliderDescriptionGeneral Range
40 HzSub-bass frequency20 Hz - 50 Hz
150 HzBass frequency50 Hz - 200 Hz
500 HzUpper-bass to lower midrange200 Hz - 800 Hz
2 kHzMidrange to upper midrange800 - 4 kHz
10 kHz“Brilliance” frequency7 kHz - 12 kHz
Auto ResetClick this button to reset all equalizer bands to their default settings. Refer to Default Settings (page 43) for more
information.
Mute
Click this button to mute the audio output. Note that clicking this button will mute all audio output ports: LINE OUT,
4 / 8 Ω OUT, and 70V / 100V OUT.
Volume
Click and drag this slider to adjust the output volume. This volume slider only aects the output volume on the
speaker outputs. It does not aect the audio volume of the LINE OUT port, as this port is a xed-level port. Note
that the volume range for this slider is not measured in decibels.
AT-GAIN-120
35
Appendix
Updating the Firmware
The AT-GAIN-120 can only be updated either through the web GUI or using the mini-USB port on the front panel.
IMPORTANT: As of this writing, Google Chrome is the only browser that is supported for rmware
updates. Other browsers will be supported in future versions of rmware.
Web GUI
Required items:
• Firmware
• IP address of the AT-GAIN-120
• Computer on the same network as the AT-GAIN-120
• Username and password to access the web GUI
1. Verify that an Ethernet cable is connected between the AT-GAIN-120 and the network. The computer used to
access the web GUI must be on the same network as the AT-GAIN-120.
2. Type the IP address of the AT-GAIN-120 into the web browser, as shown in the example below.
3. The login screen will be displayed. Login using the username and password. The default login credentials are:
Username: admin
Password: Atlona
AT-GAIN-120
36
Appendix
4. Click Status in the menu bar on left side of the screen.
5. Click the Save button.
6. The Save As dialog box will be displayed. Select the folder where the le will be saved. Click the Save button to
save the le. The le is saved in .bin format and uses the default name of systemsettings.bin.
7. Click Firmware on the left side of the screen.
8. Click the Browse button to select the rmware le.
9. Click the Load button to begin the upgrade process and the PWR LED indicator will ash rapidly. A progress bar
will be displayed during the update process. Once the update has been completed, re-login to the webGUI.
WARNING: Power must not be disconnected or interrupted during the rmware update process.
AT-GAIN-120
37
USB
Required items:
• Firmware
• USB Type A to Mini-USB Type B cable
• Computer with USB port
1. Download the latest rmware from the Atlona web site.
2. Disconnect the power from the AT-GAIN-120.
3. Connect the USB cable from the FW port on the front panel to the computer with the rmware.
4. Reconnect the power to the AT-GAIN-120. After a few seconds, a drive folder will be displayed.
Appendix
5. Delete all existing les on this drive.
6. Drag-and-drop the rmware le on the computer to this folder. Wait for the le to be copied.
7. Disconnect both the USB cable and power cable from the AT-GAIN-120.
8. Reconnect the power to the AT-GAIN-120. The PWR LED indicator on the front panel will rapidly ash green,
indicating that the rmware upgrade is in process; this should take only a few seconds.
Rapidly flashes green
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
GAIN
PWR
TM
NET AUDIODEVICE ID
VOL LEVEL
9. The rmware upgrade process is complete.
AT-GAIN-120
38
Appendix
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
LAN
INPUT
NETWORK AUDIO
RESET RESET
LINE OUT
CLASS 2 WIRING CLASS 2 WIRING
TRIGGERMODE
MODEL:
dB
-22
-2
-4
-20
-19
-14
-9
-22
-2
-4
-20
-19
-14
-9
dB
ANALOG IN
L
4 / 8 Ω OUT 70V / 100V OUT
AT-GAIN-120
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
L R
IP
4Ω
8Ω 100V
70V
R
INPUT GAIN
L R
Rack Mount Installation
The AT-GAIN-120 can be mounted in dierent ways, based on the number of units that are being installed.
When installed into a standard 19” rack, the AT-RACK-1RU will need to be purchased from atlona.com.
The AT-RACK-1RU can be used to either mount a single AT-GAIN-120 unit or it can be used to mount multiple half-
rack Atlona products, such as a AT-GAIN-120 and a AT-UHD-SW-510W.
IMPORTANT: Before mounting the AT-GAIN-120 to the AT-RACK-1RU, remove the rubber feet from
the bottom of the unit.
AT-RACK-1RU
1. Place the AT-GAIN-120 on a at surface, upside down.
2. Turn the AT-RACK-1RU upside down, placing it on top of the AT-GAIN-120, as shown, and align the holes of the
AT-RACK-1RU, marked in blue, with the mounting holes on the AT-GAIN-120.
3. Use the included 7 mm screws to secure the AT-RACK-1RU to the AT-GAIN-120.
IMPORTANT: To prevent possible damage to the device, rack, and/or screws, do not overtighten or
use high-torque devices when securing the devices to the rack.
ANALOG IN
VOL LEVEL
LINE OUT
L
R
CLASS 2 WIRING CLASS 2 WIRING
4 / 8 Ω OUT 70V / 100V OUT
L R
RESET RESET
NETWORK AUDIO
IP
TRIGGERMODE
NET AUDIODEVICE ID
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
INPUT GAIN
dB
-22
-20
-19
dB
-14
-22
-20
-9
-19
-2
L R
-4
-14
TM
GAIN
-9
4Ω
PWR
-2
-4
8Ω 100V
70V
LAN
MODEL:
AT-GAIN-120
ANALOG IN
VOL LEVEL
INPUT
FWSIGNAL ANALOG IN
LINE OUT
L
AUDIO AMPLIFIER
R
CLASS 2 WIRING CLASS 2 WIRING
4 / 8 Ω OUT 70V / 100V OUT
L R
RESET RESET
NETWORK AUDIO
IP
TRIGGERMODE
NET AUDIODEVICE ID
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
INPUT GAIN
dB
-22
-20
-19
dB
-14
-22
-20
-9
-19
-2
L R
-4
-14
TM
GAIN
-9
4Ω
PWR
-2
-4
8Ω 100V
70V
MODEL:
AT-GAIN-120
AT-GAIN-120
39
LAN
INPUT
FWSIGNAL ANALOG IN
AUDIO AMPLIFIER
Appendix
Network Audio Card Installation
The AT-GAIN-NET is an optional audio card which allows Dante and AES67 audio streams to be used with the ATGAIN-120. Follow the instructions below to install the AT-GAIN-NET audio card.
WARNING: To prevent the risk of electrocution or electric shock, always disconnect the power cord
from the AT-GAIN-120 before installing or removing the AT-GAIN-NET network card.
1. Disconnect the power cord from AT-GAIN-120.
2. Set the AT-GAIN-120 on a at surface, free of obstructions. Position the AT-GAIN-120 as shown in the picture
below.
3. Using a small Phillips-head screwdriver, remove the two screws holding the faceplate in place. After the
faceplate is removed, set it aside. Keep the two screws to attach the included faceplate with the INPUT card.
Phillips-head screws
AT-GAIN-120
40
4. Locate the plastic guides on either side of the expansion slot.
Appendix
Plastic Guides
Upper Rail
Lower Rail
5. Carefully position the card between the upper and lower rail of each guide, and gently push the AT-GAIN-NET
network card forward, until it locks in place. The card will make a small snapping sound, once the card is in
place.
IMPORTANT: When handling the card, avoid touching the components. Always hold the card by
the edges. Electrostatic discharge can damage components and the card.
AT-GAIN-120
41
Appendix
Insert direction
6. Locate the included AT-GAIN-NET faceplate with the INPUT port and install the faceplate using the screws from
Step 2, as shown below. Do not over-tighten the screws using high-torque devices, as this may cause damage
to the screws or the faceplate assembly.
Included AT-GAIN-NET Faceplate
7. Card installation is complete.
8. Connect the power cable to the AT-GAIN-120.
9. Connect an Ethernet cable, with an encoded digital audio stream, to the INPUT port. Refer to the Network Audio
(page 24)for information on using Dante and AES67 audio streams.
AT-GAIN-120
42
Default Settings
The following table lists the factory-default settings for the AT-GAIN-120.
FeatureSettings
Appendix
NetworkDHCP
Static IP address
Subnet
Gateway
Telnet Port
HTTP Port
IP Timeout
Hostname
Telnet Login Mode
ControlPower
Auto Power Down
Auto Power Down Timer (min)
Hibernation
Unit Trigger
Blink
UsersAdmin username
Admin password
AudioInput Selection
Equalization bands
40 Hz
150 Hz
500 Hz
2 kHz
10 kHz
Volume
ON
192.168.1.254
255.255.0.0
192.168.1.1
23
80
300
AT-GAIN-120-[last ve digits of serial number]
OFF