Panduit ATLONA AT-ETU-SYNC User manual

Atlona Manuals
Test Equipment
AT-ETU-SYNC
EDID Emulator
for 4K HDR HDMI Signals

AT-ETU-SYNC 2
Version Information
Version Release Date Notes
5 Apr 2023 Updated spec table to match datasheet.

AT-ETU-SYNC 3
Sales, Marketing, and Customer Support
Operating Notes
IMPORTANT: Visit http://www.atlona.com/product/AT-ETU-SYNC for the latest rmware updates
and User Manual.
Main Oce
Atlona Incorporated
70 Daggett Drive
San Jose, CA 95134
United States
Oce: +1.408.962.0515
Sales and Customer Service Hours
Monday - Friday: 6:00 a.m. - 4:30 p.m. (PST)
http://atlona.com/
International Headquarters
Atlona International AG
Tdistrasse 18
8002 Zrich
Switzerland
Oce: +41.43.508.4321
Sales and Customer Service Hours
Monday - Friday: 09:00 - 17:00 (UTC +1)
Warranty
To view the product warranty, use the following link or QR code:
https://atlona.com/warranty/.

AT-ETU-SYNC 4
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 ampliers) 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 specied 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 qualied 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.
CAUTION: TO REDUCT THE RISK OF
ELECTRIC SHOCK
DO NOT OPEN ENCLOSURE OR EXPOSE
TO RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS
INSIDE REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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 opera-
tional instructions in the literature accompanying the product.
Safety and Certication
FCC Compliance
Copyright, Trademark, and Registration
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 dierent from that to which the receiver
is connected; 4) consult the dealer or an experienced radio/TV technician for help. Any changes or modications 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 specied additional components or accessories elsewhere dened to be used with the installation of the product, they must be
used in order to ensure compliance with FCC regulations.
© 2023 Atlona Inc. All rights reserved. “Atlona” and the Atlona logo are registered trademarks of Atlona Inc. Pricing, specications and availability
subject to change without notice. Actual products, product images, and online product images may vary from images shown here.
Dolby, Dolby Atmos, and the double-D symbol are registered trademarks of Dolby Laboratories Licensing Corporation.
The terms HDMI, HDMI High-Denition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of
HDMI licensing Administrator, Inc.
For DTS patents, see http://patents.dts.com. Manufactured under license from DTS, Inc. DTS, the Symbol, DTS and the Symbol together, and
Digital Surround are registered trademarks and/or trademarks of DTS, Inc. in the United States and/or other countries. © DTS, Inc. All Rights
Reserved.
All other trademark(s), copyright(s), and registered technologies mentioned in this document are the properties of their respective owner(s).

AT-ETU-SYNC 5
Table of Contents
Introduction 6
Features 6
Package Contents 6
Panel Description 7
Installation 8
Connection Diagram 8
Device Operation 9
Selecting an EDID 9
Learning an EDID 10
Performing System Tests 12
In-Line Testing 12
Source Testing 14
Sink Testing 14
DDC Reclocking 14
Command Line 15
Conguration 15
Command List 17
Appendix 19
Updating the Firmware 19
Specications 21

AT-ETU-SYNC 6
The Atlona Etude™ Sync (AT-ETU-SYNC) provides EDID emulation and Hot Plug Detect communication between
HDMI® sink and source devices. It detects and corrects for signal integrity issues associated with cabling or
connections, and can resolve compatibility problems between a source and sink. The Etude Sync is compatible
with high dynamic range (HDR) formats and is HDCP 2.2 compliant. It supports 4K/UHD video @ 60 Hz with 4:4:4
chroma sampling, as well as HDMI data rates up to 18 Gbps. In addition to addressing HDMI signal and device-
related issues, the Etude Sync reports HDCP compliance at the source and destination, and can manage EDID
communication with the source. This device is ideal for AV system troubleshooting as well as ensuring reliable,
consistent performance.
The Etude Sync is for residential and commercial applications with the latest as well as emerging 4K/UHD and HDR
sources and displays. It is compatible with all video resolutions, audio formats, and color space formats supported
in the HDMI 2.0a specication, plus the ability to pass metadata for HDR content. The Etude Sync includes Atlona’s
award-winning 10-year limited product warranty and customer support services, so that integrators can specify,
purchase, and install with condence.
1 x AT-ETU-SYNC
1 x USB to mini-USB cable
1 x 5V DC / 1.2A power supply
1 x Mounting brackets (pair)
1 x Installation Guide
Introduction
Features
Package Contents
• 4K/UHD capability @ 60 Hz with 4:4:4 chroma sampling, plus support for HDR (High Dynamic Range) formats
• Supports video, audio, and color space formats in the HDMI 2.0a specication
• HDCP 2.2 and 1.4
• LPCM 7.1 audio, Dolby® Digital, Dolby Digital Plus, Dolby Atmos®, Dolby TrueHD, DTS:X™,
and DTS-HD Master Audio™
• 3D pass through
• 10 EDID modes
• Allows “learning” of EDID from a sink device
• Essential tool for testing and troubleshooting connectivity issues in any system
• Front-panel indicators provide power and signal status information for +5 volt source supply, hot plug detect,
and HDCP
• Restores +5 volt and HPD signals
• Compact and portable

AT-ETU-SYNC 7
Panel Description
1
52 3 6789 10 11
4
1 PWR
Glows red when the unit is powered.
2 SOURCE
Indicates the source status. Refer to Performing System Tests (page 12) for more information.
3 SINK
Indicates the sink status. Refer to Performing System Tests (page 12) for more information.
4 5V
Reports the status of the 5V signal from the source device. Refer to Performing System Tests (page 12) for
more information.
5 HPD
Reports the Hot-Plug Detect (HPD) status from the sink device. Refer to Performing System Tests (page 12)
for more information.
6 TEST
Press this button to begin the test procedure. Refer to Performing System Tests (page 12) for more
information.
7 LEARN
This LED indicator will glow bright green when the switcher is powered. Refer to Learning an EDID (page 10)
for more information.
8 EDID
Turn this dial to select the desired EDID mode. Refer to Selecting an EDID (page 9) for more information.
9 HDMI IN
Connect an HDMI cable from the source to this port.
10 HDMI OUT
Connect an HDMI cable from the sink (display) to this port.
11 FW / PWR
Connect the included USB cable from a computer to this port. This port is used to power the AT-ETU-SYNC and
to update rmware.
Front Rear

AT-ETU-SYNC 8
Installation
1. Connect an HDMI cable from the source to the HDMI IN port on the AT-ETU-SYNC.
2. Connect an HDMI cable from the sink (display) to the HDMI OUT port on the AT-ETU-SYNC.
3. Connect the included 5V DC power supply to the FW / PWR port on the AT-ETU-SYNC.
4. Connect the 5V DC power supply to an available AC outlet.
Video
Video
AT-ETU-SYNC
HD/UHD Source Display (Sink)
The illustration below, shows the proper location of the AT-ETU-SYNC in a basic source-sink setup. The location of
the AT-ETU-SYNC will vary, depending on the system. Before using the AT-ETU-SYNC as an EDID emulator, an EDID
must be selected or learned. Refer to Selecting an EDID (page 9) and Learning an EDID (page 10) for more
information.
Connection Diagram
IMPORTANT: The AT-ETU-SYNC is a High Dynamic Range (HDR) device. For best performance,
use premium HDMI cables that are HDR-certied. The HDMI cable between the AT-ETU-SYNC and
the display (sink) and the should not exceed 15 feet (4.5 meters).

AT-ETU-SYNC 9
The AT-ETU-SYNC includes 10 EDID modes, which can be selected using the EDID dial.
1. Power the AT-ETU-SYNC.
2. Rotate the EDID dial to the desired EDID mode (0 - 9). Refer to the table above for a listing of available EDID
modes.
3. Connect an HDMI cable from the display to the HDMI OUT port on the AT-ETU-SYNC.
4. Connect another HDMI cable from the source to the HDMI IN port on the AT-ETU-SYNC.
5. Power the source.
6. Power the sink device.
7. The source will use the selected EDID mode when sending audio/video data to the sink device.
Selecting an EDID
Mode Description Mode Description
0Learn mode 54K 60 4:2:0 / multichannel (HD lossless)
11080p 3D / 2 channel 64K 60 4:2:0 HDR / 2 channel
21080p 3D / multichannel (lossless) 74K 60 4:2:0 HDR / multichannel (HD lossless)
31080p DVI 84K 60 4:4:4 8-bit / 2 channel
44K 60 4:2:0 / 2 channel 94K 60 4:4:4 8-bit / multichannel (HD lossless)
2
EDID dial
IMPORTANT: By default, EDID mode 0 is blank. If an EDID has not been saved to mode 0, then refer
to Learning an EDID (page 10) for information.
NOTE: The EDID dial can be set to any EDID mode, while the AT-ETU-SYNC is powered and
connected to the system.
Device Operation

AT-ETU-SYNC 10
The AT-ETU-SYNC has the ability to learn the EDID from another device, using EDID mode 0. Once learned, the
EDID data will be read by the source, providing all the necessary details of the type of signal that will be sent to the
sink device.
1. Disconnect the AT-ETU-SYNC from the system.
2. Power the AT-ETU-SYNC.
3. Rotate the EDID dial to EDID mode 0, as shown.
4. Connect an HDMI cable from the sink device to the HDMI OUT port on the AT-ETU-SYNC. Make sure that the
sink device is powered-on.
5. Press and hold the LEARN button on the AT-ETU-SYNC until the HPD light glows green.
6. Release the LEARN button.
Learning an EDID
EDID mode 0
Display (Sink)
AT-ETU-SYNC
Device Operation

AT-ETU-SYNC 11
LED/Button State Description
LEARN Flashing blue EDID being learned.
O EDID learned successfully.
Flashing red Error learned EDID.
• Bad or corrupt EDID on sink.
• No sink device present or detected.
• Make sure sink is powered.
• Check for proper connection between sink device and
AT-ETU-SYNC.
• Possible bad cable.
HPD Solid green Sink device OK.
O Sink device not detected.
During the process, the LEARN button will ash blue as the EDID data is copied into memory.
If the EDID was successfully learned, then the LEARN button will turn o. If an error was encountered during the
operation, then the LEARN button will ash red.
If an error is encountered, disconnect the power from the AT-ETU-SYNC, power-cycle the sink device, then
repeat steps 4 through 6. If after several attempts, the error is encountered, then this may indicate that the sink
device has a bad or corrupt EDID.
7. Reconnect the source (or other intermediate device) to the HDMI IN port on the AT-ETU-SYNC. The source will
read the EDID data stored in EDID mode 0 and use this information to send the proper audio and video formats
to the sink device.
Flashes blue while learning EDID
NOTE: EDID data will remain in EDID mode 0, even after power is disconnected. To learn a new EDID
and overwrite the existing EDID data in mode 0, repeat steps 1 through 6.
Device Operation

AT-ETU-SYNC 12
1. Power the AT-ETU-SYNC.
2. Position the AT-ETU-SYNC between the source and sink. The actual position of the AT-ETU-SYNC will depend
upon the setup. In the illustration, below, an intermediate device (such as a switcher, splitter, or matrix) has been
introduced. If no intermediate devices are present, then connect the AT-ETU-SYNC between the source and the
display (sink).
• Problem is suspected between the sink and any upstream devices:
a. Connect an HDMI cable from the intermediate device to the HDMI IN port on the AT-ETU-SYNC.
b. Connect an HDMI cable from the HDMI OUT port on the AT-ETU-SYNC to the display (sink).
• If the problem is suspected between the source and the intermediate device(s):
a. Connect an HDMI cable from the source to the HDMI IN port on the AT-ETU-SYNC.
b. Connect an HDMI cable from the HDMI OUT port on the AT-ETU-SYNC to the intermediate device.
Video
Video
Display (Sink)
AT-ETU-SYNC
Source
OR
AT-ETU-SYNC
Intermediate
Device
The AT-ETU-SYNC features a TEST button which tests the source, sink, or the entire system to aid in troubleshooting
connectivity issues.
Performing System Tests
In-Line Testing
3. Press and release the TEST button on the front panel of the AT-ETU-SYNC.
Device Operation

AT-ETU-SYNC 13
4. The SOURCE, SINK, 5V, and HPD indicators will display the current testing results. Refer to the table, below.
5. After the test procedure is complete all LED indicators, except for the PWR indicator, will turn o.
LED State Description
SOURCE Solid green Source is HDCP 2.2.
Flashing green Source is HDCP 1.4.
Solid red The source is not HDCP-compliant.
SINK Solid green Sink is HDCP 2.2.
Flashing green Sink is HDCP 1.4.
Solid red Sink is not HDCP-compliant.
5V Solid red Signal is out of range.
Solid green Signal from the source is present and is within the range of
4.7 V to 5.3 V DC.
O No source detected.
• Check that a source device is connected
• Verify the integrity of the HDMI cable connected to the
source device
HPD Solid red HPD is “low” and in the range of 0 V to 0.8 V DC.
Solid green HPD is “high” and in the range of 2.0 V to 5.3 V DC.
O No sink device is detected.
• Check that a sink device is connected.
• Verify the integrity of the HDMI cable connected to the
sink.
Device Operation
NOTE: If either the HPD or 5V LED indicator alternates between green and red, then this indicates that
the voltage level is on the edge of acceptance. If this occurs, try using shorter HDMI cables (on both
ends). It is also possible that the remote device is not providing the sucient voltage levels.
The minimum requirement is 4.7 V DC for the 5 V signal and 2.0 V DC for HPD.

AT-ETU-SYNC 14
DDC relocking, sometimes referred to as “clock stretching”, is method for correcting sync issues on the DDC line.
The DDC line (also known as the I2C bus) is part of the HDMI interface and is responsible for transmitting EDID and
HDCP information from the sink to the source. The DDC line contains two signal lanes: SDA (data) and SCL (clock).
Most of the time, the timing between these two lanes is correct. However, lengthy cables and/or intermediate
devices between the source and sink, can introduce synchronization problems between these two lanes. This can
result in a variety of issues, such as ashing picture, drop-outs, artifacts, and incorrect resolution.
Placing the AT-ETU-SYNC in-line, between the source and sink, will usually correct these issues. Experimenting with
the position of the AT-ETU-SYNC, within the system - particularly when intermediate devices are installed - may be
necessary to obtain the correct results. If the problem persists, contact an Atlona Technical Support Engineer for
assistance.
NOTE: Some HDMI devices do not support clock-stretching.
Source Testing
Sink Testing
1. Power the AT-ETU-SYNC.
2. Connect an HDMI cable from the source to the HDMI IN port on the AT-ETU-SYNC.
3. Press and release the TEST button on the front panel of the AT-ETU-SYNC.
4. The SOURCE and 5V indicators will display the testing results. Note that since a sink device is not present,
the HPD and SINK indicators are ignored. Refer to the table on the previous page.
1. Power the AT-ETU-SYNC.
2. Connect an HDMI cable from the sink to the HDMI OUT port on the AT-ETU-SYNC.
3. Press and release the TEST button on the front panel of the AT-ETU-SYNC.
4. The SINK and HPD indicators will display the testing results. Note that since a source device is not present,
the 5V and SOURCE indicators are ignored. Refer to the table on the previous page.
DDC Reclocking
NOTE: When the EDID dial is set to EDID mode 0, during a test procedure, the LEARN button will
glow blue. If the EDID dial is set to any other mode, then the LEARN button will remain “o”. Setting
the EDID mode will not aect the results of the test procedure.
Device Operation

AT-ETU-SYNC 15
Device Operation
Command Line
This section provides a short list of commands available for the AT-ETU-SYNC.
Conguration
In order to use these commands, the AT-ETU-SYNC must be connected to a computer from which the commands
are issued.
1. Connect a USB-A to mini-USB cable between the computer and the FW port on the AT-ETU-SYNC.
Firmware port
2. Once connected to the computer a COM port will be created, as shown in the example below.
IMPORTANT: The USB type-A port on the computer must be able to provide 5V 1A of power.

AT-ETU-SYNC 16
Device Operation
3. Launch the desired client. Atlona recommends the Hercules client, available here:
https://www.hw-group.com/software/hercules-setup-utility
4. Congure the following RS-232 settings in the client:
Baud rate: 115200
Data bits: 8
Parity: 1
Flow control: None

AT-ETU-SYNC 17
Device Operation
IMPORTANT: Each command is terminated with a carriage-return (0x0d) and the feedback is
terminated with a carriage-return and line-feed (0x0a).
Command Description
EDIDRead Reads the EDID saved to the AT-ETU-SYNC mode 0 memory bank.
EDIDWrite Writes the specied EDID to the AT-ETU-SYNC mode 0 memory bank.
Version Displays the current rmware version of the unit.
EDIDRead
Reads the EDID saved to the AT-ETU-SYNC mode 0 memory bank.
Syntax
EDIDRead
Feedback
EDIDRead
00FFFFFFFFFFFF004C2DCB0B000000000D180103
804728782AD691A7554EA0250C5054BFEF80714F
810081C081809500A9C0B3000101565E00A0A0A0
295030203500C48E2100001A023A801871382D40
582C4500C48E2100001E000000FD00184B1B5A19
000A202020202020000000FC0053333244383530
0A2020202020011802031CF148900411F1303122
022230907078301000066030C00100080023A801
871382D40582C4500C48E2100001E023A80D0723
82D40102C4580C48E2100001E011D007251D01E2
06E285500C48E2100001E011D00BC52D01E20B82
85540C48E2100001E00000000000000000000000
0000000000000000000000000000000A2
Feedback
EDIDRead
This command does not require any parameters
Command List
Commands are case-sensitive. If the command fails or is entered incorrectly, then the feedback is “Command
FAILED”. Commands are sent using RS-232. There should be a least a 500 millisecond delay between each
command sent to the unit.

AT-ETU-SYNC 18
Device Operation
EDIDWrite
Writes the specied EDID to the AT-ETU-SYNC mode 0 memory bank. If the operation is successful, the raw EDID
data will be displayed as feedback. Otherwise, the “Command FAILED” message will be returned with the feedback.
Version
Displays the current rmware version of the AT-ETU-SYNC.
Syntax
EDIDWrite X
Syntax
Version
Example
Version
Feedback
V2.0.6
Parameter Description Range
XEDID data Hexadecimal (256 characters)
This command does not require any parameters
Example
EDIDWrite
00FFFFFFFFFFFF004C2DCB0B000000000D180103
804728782AD691A7554EA0250C5054BFEF80714F
810081C081809500A9C0B3000101565E00A0A0A0
295030203500C48E2100001A023A801871382D40
582C4500C48E2100001E000000FD00184B1B5A19
000A202020202020000000FC0053333244383530
0A2020202020011802031CF148900411F1303122
022230907078301000066030C00100080023A801
871382D40582C4500C48E2100001E023A80D0723
82D40102C4580C48E2100001E011D007251D01E2
06E285500C48E2100001E011D00BC52D01E20B82
85540C48E2100001E00000000000000000000000
0000000000000000000000000000000A2
Feedback
EDIDWrite
00FFFFFFFFFFFF004C2DCB0B000000000D180103
804728782AD691A7554EA0250C5054BFEF80714F
810081C081809500A9C0B3000101565E00A0A0A0
295030203500C48E2100001A023A801871382D40
582C4500C48E2100001E000000FD00184B1B5A19
000A202020202020000000FC0053333244383530
0A2020202020011802031CF148900411F1303122
022230907078301000066030C00100080023A801
871382D40582C4500C48E2100001E023A80D0723
82D40102C4580C48E2100001E011D007251D01E2
06E285500C48E2100001E011D00BC52D01E20B82
85540C48E2100001E00000000000000000000000
0000000000000000000000000000000A2

AT-ETU-SYNC 19
Appendix
Updating the Firmware
1. Check the bottom of the AT-ETU-SYNC and identify the hardware revision:
Requirements:
• AT-ETU-SYNC
• Firmware le
• Computer
• USB-A to USB mini-B cable
Firmware portTEST button
• If the Rev letter (shown on the sticker on the bottom of the unit) is A, then update using the 1.x
rmware.
• If the Rev letter is B or later, then update using the 2.x rmware.
2. Disconnect power from the AT-ETU-SYNC.
3. While holding down the TEST button, Connect a USB-A to USB mini-B cable between the PC and the rmware
port on the AT-ETU-SYNC. The unit will be powered by the USB cable.

AT-ETU-SYNC 20
4. A virtual USB drive will be created and the folder of this drive will be displayed. If this folder is not displayed
automatically, then select the drive from within Windows Explorer (Windows) or the Finder (Mac).
5. Delete all les from the drive, if any are present.
6. Drag-and-drop the rmware le to the drive. The folder will automatically close after the rmware le has been
copied to the drive. The LEARN button will ash during the update procedure.
7. After the LEARN button stops ashing, disconnect the USB cable from both the computer and the AT-ETU-
SYNC.
8. The rmware update process is complete.
Appendix