2X1 VGA W/ STEREO AUDIO
(AUTOMATIC) SWITCHER
AT-APC21A
User Manual
Toll free: 1-877-536-3976
Local: 1-408-962-0515
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INTRODUCTION
Atlona Technologies’ AT-APC21A is an automatic VGA Switcher with 2 inputs to 1 output with Stereo Audio.
This unit features multiple switching capabilities including automatic selection of the active channel to elimi-
nate the need of manual control. To switch over to another channel, simply turn on the other device or use
external control button. A manual control button is also available to switch between desired channels. This
automatic 2x1 VGA switcher supports 350MHz bandwidth with maximum VGA resolutions up to 2048x1536.
This unit is the ideal solution for connecting two VGA devices for applications involving conference rooms,
surveillance, video game consoles, etc.
FEATURES
• Switch between two VGA w/Audio sources to a single monitor and set of speakers
• No Software required
• Supports VGA, XGA, SVGA, SXGA, UXGA, WUXGA, Multi-sync, TFT-LCD monitor
• Supports stereo audio
• Auto detect monitor type and DDC2B signal for each port
• Supports 350MHz bandwidth with maximum VGA resolution 2048x1536
• Video enhancement to extend quality video up to 30 meters
• Auto switch to new connected VGA channel (Auto Detect & Select)
• Optional external control button for manual selection
• Dual color LED to indicate active channel status
• Power-free, electronic design to protect connected devices
• Magnetic pad for ease installation
PACKAGE CONTENTS
• Atlona AT-APC21A 2x1 Signal Sensing Automatic VGA Switcher w/Analog Audio
• Wired manual selector
• User Manual
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SPECIFICATIONS
Model Name
2-Port VGA Audio Switch
VGA Cable (Suggested) UL 2919 RGB 3+ 4VGA Cables
Channel Select Method Auto Detection
Connector
Input
Two Sets of HDB-15 (Female) & 3.5 mm Jack
Output One Set of HDB-15 (Female) & 3.5 mm Jack
Signal Type
VGA, XGA, SVGA, UXGA, WUXGA, Multi-sync, TFT-LCD Monitor
Video Bandwidth
450 MHz
Maximum VGA Resolu- 2048 x 1536
tion
Maximum Distance
Power Supply
LED Display
30 meters
Taken from VGA Signal or DC 5V power adapter
Blue for Channel 1; Green for Channel 2
Metal
Casing
Dimension (L x W x H in 113 x 62 x 29
mm)
Operating Temperature 0° C ~50° C
Storage Temperature
Humidity
0° C ~60° C
25%~70% Non-Condensing
PANEL DESCRIPTION
1. Front Panel
1. Channel Display Status: LED will Light up Blue for
1
Channel 1 and Green for Channel 2
2. Channel 1 Audio Input
3. Channel 1 VGA Input
4. Channel 2 VGA Input
5. Channel 2 Audio Input
2
3
4
5
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2. Rear Panel
1. Channel Display Status: LED will Light up Blue for
Channel 1 and Green for Channel 2
2. Channel 1 Audio Input
3. Channel 1 VGA Input
4. Channel 2 VGA Input
5. Channel 2 Audio Input
1
4
2
3
CONNECTION AND INSTALLATION
Speakers
VGA Monitor
Laptop
PC
1. Connect the desired VGA monitor and speaker to the output of the AT-APC21A and two VGA + Audio
sources to the corresponding inputs of the AT-APC21A via VGA and audio cables.
2. The LED display on the switch panel will turn on when the switch detects a VGA signal (Blue: Channel 1,
Green: Channel 2) The External control button is available for manual switching.
3. Please use standard high quality VGA cable to ensure best image quality.
4. Select methods:
A. External control button: Push this button to switch to desired channels. The button will be inactive
if only one channel is activated.
B. Auto switching: The switcher will automatically detect a new input signal and change to that sig-
nal. If one of the two sources is unplugged, the switch will automatically change to the available chan-
nel.
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SAFETY INFORMATION
Safeguards
To reduce the risk of electric shock, do not
expose this product to rain or moisture
Do not modify the wall plug. Doing so will
void the warranty and safety features.
If the wall plug does not fit into your local
power socket, hire an electrician to replace
your obsolete socket.
This equipment should be installed near
the socket outlet and the device should
be easily accessible in the case it requires
disconnection.
Precautions
FCC regulations state that any unauthorized changes or modifications to this equipment, not expressly ap-
proved by the manufacturer, could void the user’s authority to operate this equipment.
Operate this product using only the included external power supply. Use of other power supplies could impair
performance, damage the product, or cause fires.
In the event of an electrostatic discharge this device may automatically turn off. If this occurs, unplug the device
and plug it back in.
Protect and route power cords so they will not be stepped on or pinched by anything placed on or against
them. Be especially careful of plug-ins or cord exit points from this product.
Avoid excessive humidity, sudden temperature changes or temperature extremes.
Keep this product away from wet locations such as bathtubs, sinks, laundries, wet basements, fish tanks, and
swimming pools.
Use only accessories recommended by Atlona to avoid fire, shock, or other hazards.
Unplug the product before cleaning. Use a damp cloth for cleaning and not cleaning fluid or aerosols.
Such products could enter the unit and cause damage, fire, or electric shock. Some substances may also mar
the finish of the product.
Never open, remove unit panels, or make any adjustments not described in this manual. Attempting to do
so could expose you to dangerous electrical shock or other hazards. It may also cause damage to your AT-
APC21A. Opening the product will void the warranty.
Do not attempt to service the unit. Disconnect the product and contact your authorized Atlona reseller or con-
tact Atlona directly.
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Atlona, Inc. (“Atlona”) Limited Product Warranty Policy
Coverage
Atlona warrants its products will substantially perform to their published specifications 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:
A) 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
B) 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
C) 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’s products is the purchaser’s exclusive remedy and Atlona’s 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’s products and is non-transferrable to
any subsequent purchaser(s) or owner(s) of these products.
Coverage Periods
Atlona’s 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
Limited Product Warranty Terms – Refurbished (B-Stock) 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
Exclusions
This Limited Product Warranty excludes:
• Damage, deterioration or malfunction caused by any alteration, modification, improper use, neglect, improper
packing or shipping (such claims must be presented to the carrier), lightning, power surges, or other acts of nature.
• 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.
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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 offering in instances arising
outside its normal course of business including, but not limited to, damage inflicted 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 specified 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 specifically disclaims all implied warranties, including, without limitation, warranties of
merchantability and fitness 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 fitness
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 fitness for the particular purpose, shall apply as provided under applicable
law.
Other Conditions
Atlona’s Limited Product Warranty offering 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, Inc Product Registration
Thank you for purchasing this Atlona product. - We hope you enjoy it and will take an extra few
moments to register your new purchase.
Registration creates an ownership record if your product is lost or stolen and helps ensure you’ll
receive notification of performance issues and firmware updates.
At Atlona we respect and protect your privacy, assuring you that your registration information is
completely secure. Atlona product registration is completely voluntary and failure to register will not
diminish your limited warranty rights.
To register go to: http://www.atlona.com/registration
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