Key Digital KD-DA1x2 User manual

4K/18G HDMI Distribution Amplifiers
The Experts in Digital Video Technology and Solutions™
Operating Instructions
KD-DA1x2 KD-DA1x4
KD-DA1x8
KD-DA1x8
KD-DA1x2 KD-DA1x4

4
Table of Contents
Introduction ..............................................................1
Quick Setup Guide ........................................................2
Installation and Operation ...................................................3
EDID Control .............................................................3
Hot Plug Control ..........................................................4
Specifications ............................................................5
Important Product Warnings & Safety Instructions: ................................6
How to Contact Key Digital
®
.................................................7
Warranty Information .......................................................7
›Note: Please visit www.keydigital.com for the latest product documentation and software
downloads. Product features and specifications are subject to change without notice.
© 2019 Key Digital, Inc. All rights reserved.
Always follow the instructions provided in this Operating Manual.
KD-DA1x2 KD-DA1x8KD-DA1x4
Visit product pages for most recent version of the manual, quick setup guide, firmware,
control drivers and all additional downloads.

1
Introduction
Key Digital®KD-DA1x2/1x4/1x8 HDMI Distribution Amps are designed and engineered
to offer the best in quality, performance, and reliability, while providing a cost-effective,
ultra-slim HDMI distribution solution. The KD-DA1x2/1x4/1x8 provide one input to
multiple outputs HDMI distribution without signal degradation. KD-DA1x2/1x4/1x8 HDMI
Distribution Amps support all SD, HD, VESA and Ultra HD/4K video standards, including
4K, 1080p/60, 1920x1200 and support of HDCP 2.2 and HDR10.
Key Features
›Digital Distribution: 1 HDMI Sources to 2/4/8 HDMI Displays
›4K Resolution: 4096x2160 or 3840x2160 30Hz at 4:4:4 and 60Hz at 4:4:4
›Bandwidth: TMDS 18Gbps
›HDR10 (High Dynamic Range): More life-like images through a greater range
of luminance levels
›HDCP2.2 and HDMI Licensing: Fully licensed and compatible with HDCP 2.2
and HDMI latest technologies
›Resolution Support: SD, HD, and VESA up to UHD/4K
›Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:4:4/8 bit
›EDID Control: Internal library with 15 EDID handshakes in addition to native EDID data
of output/display 1
›Full Buffer™System : Manages TMDS re-clocking / signal re-generation, HDCP source &
display authentication, Hot Plug Management and EDID Control handshake
›Lossless Compressed Digital Audio: Dolby
®
TrueHD, Dolby
®
Digital Plus,
DTS-HD Master Audio
™
and Dolby
®
Atmos
›I2C Communication: EDID and HDCP buffering from Display to Source
›CEC Disconnect: Prevents all device communication signals via CEC, ARC,
and HDMI Ethernet channels
Accessories
›KD-DA1x2 Power Supply: KDPS5V1ASC, 5V/1A, interchangeable head, screw-in connector
›KD-DA1x4 Power Supply: KDPS5V2ASC, 5V/2A, interchangeable head, screw-in connector
›KD-DA1x8 Power Supply: KDPS5V4ASC, 5V/4A, interchangeable head, screw-in connector
›Mounting Brackets

2
Digital Signage
Digital Signage
KD-DA1x8
KD-DA1x8
HDMI
HDMI
KD-X222POKD-X222POKD-X222POKD-X222PO
KD-X222POKD-X222POKD-X222POKD-X222PO
Display 8Display 7Display 6Display 5
Up to 150 ft
@ 4K
HDMI
Display 2
HDMI
Display 4
HDMI
Display 3
HDMI
Display 1
CAT5e/6 CAT5e/6 CAT5e/6 CAT5e/6
HDMI HDMI HDMI HDMI
HDMI HDMI HDMI HDMI
HDMI
HDMI
Display 8
CAT5e/6
Up to 125 ft. @ 4K
KD-X222POKD-X222PO
HDMI
HDMI
Display 7
CAT5e/6
Up to 125 ft. @ 4K
KD-X222POKD-X222PO
HDMI
HDMI
Display 6
CAT5e/6
Up to 125 ft. @ 4K
KD-X222POKD-X222PO
HDMI
HDMI
Display 5
CAT5e/6
Up to 125 ft. @ 4K
KD-X222POKD-X222PO
HDMI
Display 4
HDMI
Display 4
HDMI
Display 2
HDMI
Display 1
Quick Setup Guide
Step 1: Find a safe and convenient location to mount or place KD-DA1x2/1x4/1x8 unit
Step 2: Begin with the KD-DA1x2/1x4/1x8 unit and all input/output devices
turned off with power cables removed
Step 3: Connect your HDMI source to the input port of KD-DA1x2/1x4/1x8 unit
Step 4: Connect your HDMI displays to the output port of KD-DA1x2/1x4/1x8 unit
Step 5:
BEFORE connecting power supply to power outlet, screw-in the power supply
to the KD-DA1x2/1x4/1x8 unit
Step 6:
AFTER all connections are made, plug-in power supply to power outlets
Step 7: Power on input/output devices

3
Installation and Operation
Before permanently securing the unit for final installation, test for proper operation of the unit
and cables in your system. It is recommended that you leave enough ventilation space to
provide sufficient airflow and cooling.
Active Input / Output LED Indicators
The front LED indicators indicate that a valid HDMI connection is made between
the KD-DA1x2/1x4/1x8 unit and each Input / Output.
Active Output
»Color: Blue
»Solid illumination during active HPD (voltage) link with connected HDMI output device
Input Active
»Color: Blue
»Solid illumination during active link (voltage + data) with connected HDMI source
»Steady blink (once per second) if signal is not present
Rotary EDID Control Switch
EDID Control
EDID (Extended Display Identification Data) is a data
structure provided by a digital display to describe its
capabilities to a video source. This data is also known as
a “handshake” and typically includes manufacturer, serial
number, product type, resolutions supported by the display,
display size, pixel mapping data, etc.
Key Digital EDID Control allows the integrator to choose the
handshake that will be provided to source devices of the
system. The EDID handshake is relayed to the source from
the distribution amplifier, or from output/display 1 (default setting).
This handshake will always be the EDID information that the source device receives.

4
The possible EDID settings can range from ‘0’ to ‘15’. (‘0’ is the default).
0 Copy EDID from HDMI Output 1
11080i, 2Ch Audio
21080i, Dolby/DTS 5.1 Audio
31080i, HD Audio
41080p, 2Ch Audio
51080p, Dolby/DTS 5.1 Audio
61080p, HD Audio
74Kx2K@60, 10.2G, HDR10, 2CH AUDIO
84Kx2K@60, 10.2G, HDR10, DOLBY/DTS 5.1
94Kx2K@60, 10.2G, HDR10, HD AUDIO
A4Kx2K@60, 18G, HDR10, 2CH AUDIO
B4Kx2K@60, 18G, HDR10, DOLBY/DTS 5.1
C4Kx2K@60, 18G, HDR10, HD AUDIO
D1280x720p@60 DVI
E1920x1080p@60 DVI
F4Kx2K@30, 10.2G, HDR, 2CH AUDIO
Hot Plug Control
Hot Plug Detection (HPD) may be forced in order to provide
the connected input/source with the necessary voltage to
inform the device that an output/display is connected and
active. If the Forced HPD switch is set to OFF, HPD signals to
the input device will pass as normal. In cases of many layers
of connectivity, HPD may be lost leading to no signal at the display. In those cases, fix the
Forced HPD switch to the ON setting.

5
Specifications
Technical:
»Input: HDMI Connector, Type A, 19 Pin Female
»Output (Each): HDMI Connector, Type A, 19 Pin Female
»Bandwidth: TMDS bandwidth 18 Gb/s
»Deep Color Support: Digital video formats in Deep Color Mode up to 12 bits/color
»DDC Communication: EDID and HDCP Bi-directional buffering from Display to Source
»KD-DA1x2 Power Supply: KDPS5V1ASC, 5V/1A, interchangeable head,
screw-in connector
»KD-DA1x4 Power Supply: KDPS5V2ASC, 5V/2A, interchangeable head,
screw-in connector
»KD-DA1x8 Power Supply: KDPS5V4ASC, 5V/4A, interchangeable head,
screw-in connector
General:
»Regulation: CE, RoHS, WEEE
»Enclosure: Black Metal
»Product Dimensions: KD-DA1x2 - 4.9” x 2.5” x .55”
KD-DA1x4 - 6.9” x 3.25” x .55”
KD-DA1x8 - 10.75” x 4.01” x 0.67”
»Packaging Dimensions: KD-DA1x2 - 8.1” x 4.7” x 3.5” (205x120x90 mm)
KD-DA1x4 - 8.1” x 4.7” x 3.5” (205x120x90 mm)
KD-DA1x8 - 12” x 5.1” x 2.95” (307x130x75 mm)
»Product Weight: KD-DA1x2 - 0.5 lb
KD-DA1x4 - 0.8 lb
KD-DA1x8 - 1.5 lb
»Shipping Weight: KD-DA1x2 – 1.1 lb
KD-DA1x4 - 1.6 lb
KD-DA1x8 – 3.1 lb

6
Important Product Warnings:
1. Connect all cables before providing power to the unit.
2. Test for proper operation before securing unit behind walls or in hard to access spaces.
3. If installing the unit into wall or mounting bracket into sheet-rock, provide proper screw
support with bolts or sheet-rock anchors.
Safety Instructions:
Please be sure to follow these instructions for safe operation of your unit.
1. Read and follow all instructions.
2. Heed all warnings.
3. Do not use this device near water.
4. Clean only with dry cloth.
5. Install in accordance with the manufacturer’s instructions.
6. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
7. Only use attachments/accessories specified by the manufacturer.
8. Refer all servicing to qualified service personnel. Servicing is required when the device
has been damaged in any way including:
»Damage to the power supply or power plug
»Exposure to rain or moisture
Power Supply Use:
You MUST use the Power Supply provided with your unit or you VOID the
Key Digital®Warranty and risk damage to your unit and associated equipment.

7
How to Contact Key Digital
®
System Design Group (SDG)
For system design questions please contact us at:
›Phone: [phone]
›E-mail: [email protected]
Customer Support
For customer support questions please contact us at:
›Phone: [phone]
›E-mail: [email protected]
Technical Support
For technical questions about using Key Digital
®
products, please contact us at:
›Phone: [phone]
›E-mail: [email protected]
Repairs and Warranty Service
Should your product require warranty service or repair, please obtain a
Key Digital
®
Return Material Authorization (RMA) number by contacting us at:
›Phone: [phone]
›E-mail: [email protected]
Feedback
Please email any comments/questions about the manual to:
›E-mail: [email protected]
Warranty Information
All Key Digital
®
products are built to high manufacturing standards and should provide years
of trouble-free operation. They are backed by a Key Digital Limited 3 Year Product Warranty
Policy. http://www.keydigital.com/warranty.htm

Key Digital®, led by digital video pioneer Mike Tsinberg,
develops and manufactures high quality, cutting-edge
technology solutions for virtually all applications where
high-end video and control are important. Key Digital®
is at the forefront of the video industry for Home Theater
Retailers, Custom Installers, System Integrators,
Broadcasters, Manufacturers, and Consumers.
Rev 5 – March 2019
Key Digital®Systems :: 521 East 3rd Street :: Mount Vernon, NY 10553
Phone : [phone] Fax : [phone] Web : www.keydigital.com