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1T-DA-674, 1T-DA-678
HDMI V1.4 Distribution Amplifiers
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Table of Contents
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1.0 INTRODUCTION
The tvONE 1T-DA-674 and tvONE 1T-DA-678 HDMI Distribution Amplifiers provide
multiple outputs from a single HDMI input for distribution to devices capable of receiving
and/or displaying such signals. The 1T-DA-674 provides 4 HDMI compliant outputs and
the 1T-DA-678 provides 8 HDMI compliant outputs. Each product in this series is
compatible with HDMI v1.4 specifications; a cutting-edge technology that supports Deep
Color (10-bit and12-bit) video. In addition, all devices exhibit high bandwidth (up to
300MHz - 9Gbps) and provide signal amplification and equalization for high
performance processing of audio and video allowing the signals to travel great
distances without quality loss. As a bonus feature, all HDMI outputs can also be
cascaded.
1.1 Liability Statement
Every effort has been made to ensure that this product is free of errors. tvONE cannot
be held liable for the use of this hardware or any direct or indirect consequential
damages arising from its use. It is the responsibility of the user of the hardware to check
that it is suitable for his/her requirements and that it is installed correctly. All rights
reserved. No parts of this manual may be reproduced or transmitted by any form or
means electronic or mechanical, including photocopying, recording or by any
information storage or retrieval system without the written consent of the publisher.
tvONE reserves the right to revise any of its hardware and software following its policy
to modify and/or improve its products where necessary or desirable. This statement
does not affect the legal rights of the user in any way.
All third party trademarks and copyrights are recognised. The tvONE logo, Magenta
logo, CORIO word and the CORIO logo are registered trademarks of tvONE. All other
trademarks are the property of their respective holders.
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1.2 Features
HDMI v1.4, HDCP 1.1 and DVI 1.0 Compliant
Allows distribution of 4 or 8 outputs (1T-DA-674 and 1T-DA-678)
Supports 3D video resolutions (Frame Packing, Side by Side)
Supports 10/12-bit color depth display
Supports PC resolutions to 4kx2k
Supports HDTV resolutions to 1080p
Supports SDTV resolutions of 480i and 576i
Supports DVI when using optional HDMI to DVI adaptors
Signal Equalization feature enables longer cable runs
Supports automatic discovery of monitor EDID
1.3 Getting the Best Results
There are many factors affecting the quality of results when distributing HDMI type
signals. Some basic precautions will ensure the best possible performance from your
new HDMI DA.
Output display device – The quality of the output signal will depend largely upon
the type and quality of the HDMI display device used. For instance, some video
projectors just look better than others.
Distance between the DA sources and the display – This plays a major role in
the final result. Long distances are possible, but special measures should be taken
in order to avoid signal loss. These include using high quality cables. Line amplifiers
may also be necessary for the longest runs.
Input/Output connection cables – Low quality cables are susceptible to
interference. They degrade signal quality due to poor matching and can cause
elevated noise levels. Cables should be of the best quality.
Interference from nearby electrical devices – These can have an adverse effect
on signal quality. For example, an older computer monitor often emits very high
electromagnetic fields that can interfere with the performance of video equipment in
its proximity.