Key Digital KD-X444LP User manual

4K 18G HDMI over 70m CAT5e/6 Extender Set
with HDR, Power over Cat, HDMI Pass Thru,
IR or RS-232
Quick Setup Guide
KD-X444LP
Engineered for Your Success
™

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Key Features
›Single CAT5e/6 UTP/STP Extension: Fully automatic equalization, and amplification
depending on cabling length
›4K Resolution Support: 4096x2160 or 3840x2160 24/25/30/60hz at 4:4:4 (signals up to
18Gbps bandwidth)
›Flexible Power over CAT (PoC): Only one power connection needed. Tx may power Rx,
or Rx may power Tx.
›Visually Lossless Compression: 18G enabling technology applied to all video formats
exceeding 10.2Gbps to accommodate transmission channel
›Low Profile: Super slim chassis design
›Signal Extension: For resolution and cable quality
»4K/UHD (18G) with CAT5e/6: Up to 230ft / 70m; CAT6A STP: Up to 328ft / 100m
»1080p with CAT5e/6: Up to 230 ft / 70m; CAT6A STP: Up to 328ft / 100m
›10G Pass-thru: Mode enables uncompressed 10.2Gbps signal extension.
›HDR10 (High Dynamic Range): More life-like images through a greater range of luminance
›HDCP 2.2: Compliancy up to HDCP 2.x and backward compliant
›Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:4:4/8 bit
›IR Sensor: Sensor powering via +5V on IR In ports collects line-of-sight IR from remote(s)
without external IR connecting block
›Up/Down IR: Two channels of IR enable control to/from devices or control systems connected
to Tx and Rx units
›RS-232: Bi-Directional control to/from Tx and Rx unit on Phoenix connector
›Full Buffer Technology: Key Digital’s proprietary suite of EDID, HDCP, TMDS, and HPD
management to overcome Pro AV installation obstacles.
›EDID Management: Internal library with 14 internal EDID handshakes including 4K with HDR
in addition to native EDID data copied from CAT5e/6 or HDMI pass-thru outputs
›HDCP Authentication: HDCP sources are authenticated by HDCP key on transmit unit, for
one-to-one topology
›Hot Plug Detection Control: Enables integrator to choose if active signal voltage is forced to
connected display/output device
›TMDS Re-Clocking: Re-generation of TMDS (AV signal) channel data at Transmit unit for
brand new AV signal
›Surround Audio Support: On HDMI pass-thru and UHDoTP outputs:
»HDMI Pass-Thru: Supports Dolby®, Dolby®TrueHD, DTS™and DTS-HD™(formats up to 7.1)
»CAT5e/6 Output: Supports Dolby®, DTS™ (formats up to 5.1/6.1)
Accessories
›1x 12V/2A, 24W DC Power Supply (Screw-In Type). SKU: KD-PS12V2ASC
›4x Mounting Brackets , 1x IR Emitter, 1x IR Sensor
Table of Contents
Introduction ..............................................................2
Application Example ........................................................4
Quick Setup Guide .........................................................5
Important Product Warnings & Safety Instructions: ..................................9
Contacting Key Digital®......................................................9
Warranty Information........................................................9
Always follow the instructions provided
in this Operating Manual.
Please visit www.keydigital.com for the latest product
documentation and software downloads. Product features
and specifications are subject to change without notice.
Introduction
Key Digital®KD-X444LP is a 4K/UHD 18Gbps, HDCP2.2 compliant HDMI over CAT5e/6 Transmitter
plus Receiver set for extension of digital video signals with the latest standards in resolution, HDR,
and Chroma over a single CAT cable.
KD-X444LP extends video resolutions up to 4096x2160 at 60hz with 4:4:4 chroma sub-sampling
over a single CAT5e/6 cable up to 230ft (70m) or up to 328ft (100) when using CAT6A STP cabling.
The Transmit unit features an HDMI pass-thru port for integration with local monitors or
AV Receivers.
In addition to HDMI AV, KD-X444LP carries IR or RS-232 for controlling remotely located equipment.
An IR sensor and IR emitter are included with the IR Input port also supporting Serial IR input
directly from a control system / IR block. With Power over CAT (PoC), only one power supply is
needed, and it may be connected at either unit for ease of installation.
KD-X444LP features Key Digital’s proprietary Full Buffer Technology software suite, with EDID
handshake management, fixed hot plug detection, HDCP authentication to the connected source,
and TMDS signal re-clocking for installation with long cabling or many connectivity layers.

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Quick Setup Guide
CONNECT:
1. Begin with the Tx and Rx units and all input / output devices turned off with power
cables removed
2. Connect your HDMI source to the input port of the Tx unit
3. Connect your HDMI display to the output port of the Rx unit
4. Connect your local monitor / AV Receiver to the HDMI pass-through port of the Tx unit
5. Connect a CAT5e/6 cable between Tx and Rx unit. Use 568-B termination.
6. Connect IR emitter from the IR Out port of the Tx or Rx unit and mount over the IR receptor of
the device you wish to control.
7. IR Input is specific on the Tx and Rx unit.
»a. The Tx unit supports hard-wired / serial IR connections only with the following pinout:
IR In Tip Ring Sleeve
Serial IR IR In N/C Ground
»b. The Rx units supports connection with the included IR Sensor only. Mount the sensor in
a location to easily collect line of sight IR signals from remotes.
8. Connect RS-232 from your control system or computer.
»a. TxD from the Controller connects into RxD of the extender
»b. RxD from the Controller connects into TxD of the extender
»c. Ground from the Controller connects into Ground of the extender
9. BEFORE connecting power supply to power outlet, screw-in the power supply to the Tx or Rx
unit. AFTER all connections are made, plug-in power supply to power outlet
10. Power on source and display
Application Example
RS-232
RS-232
KD-X444LP Tx
4K/UHD
up to 70m
KD-X444LP Rx
HDMI
HDMI
HDMI
CAT5e/6
Speaker
Cabling
Video Source
Surround
Receiver
4K 18G w/HDR
Control System
Display / Projector
IR
IR
Audio
Surround Audio
IR Source
Remote

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CONFIGURE:
EDID Handshake Selection (Tx Unit)
›The default EDID handshake setting is “A” (4Kx2K@60, 18G, HDR, 2ch audio).
›Use the EDID rotary if you wish for your source to output a different video resolution and
audio format
›If setting 0 is selected, the Rx unit collects the EDID handshake from the connected display
and a handshake is provided to the source that is similar to the EDID file of the display, but
within KD-X444LP’s capabilities.
Position EDID Handshake Description
0Auto EDID from KD-X444LPRx
11920x1080p, 2CH AUDIO
21920x 1080p, DOLBY/DTS 5.1
31920x 1080p, HD AUDIO
41920x 1200p, 2CH AUDIO
51920x 1200p, DOLBY/DTS 5.1
61920x 1200p, HD AUDIO
74Kx2K@60, 10.2G, HDR, 2CH AUDIO
84Kx2K@60, 10.2G, HDR, DOLBY/DTS 5.1
94Kx2K@60, 10.2G, HDR, HD AUDIO
A4Kx2K@60, 18G, HDR, 2CH AUDIO
B4Kx2K@60, 18G, HDR, DOLBY/DTS 5.1
C4Kx2K@60, 18G, HDR, HD AUDIO
D1280x720p@60 DVI
E1920x1080p@60 DVI
FCopy EDID from HDMI Pass-through
RS-232 / IR Selection Switch (Tx and Rx Unit)
›Used to select if IR or RS-232 control will be extended through the Rx unit
›If RS-232 is selected, IR control is not extended.
›If IR is selected, RS-232 is not extended
»If IR is selected both IR In and IR Out is active
Firmware Mode Switch (Tx and Rx Unit)
›The switch should always be set to “Operate”
›“F/W Load” should only be selected if loading firmware to the unit.
»Firmware load/upgrade should only be done if advised by Key Digital Technical Support
Forced HPD Switch (Rx Unit)
›In cases of many connectivity layers or use with non-standard devices, hot plug detection
(HPD) may be lost or drop below standard levels and lead to a “no source connected” error
message and/or no image on the connected display.
›If set to ON, Hot Plug Detection (HPD) voltage is forced at the HDMI connection of the Rx unit.
The connected display will be fed a constant voltage to inform the device that a partner is
always connected and active.
›If set to OFF, Hot Plug Detection (HPD) voltage is passed thru from connected source to the
display

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LED Indicator Lights:
›Power: Color - Blue
»Solid illumination during power on state, as provided by healthy connection with power
supply and healthy PoC extension.
»Steady blink if unit has is has a power short
›Live: Color - Yellow
»Steady blink from healthy unit CPU state
›Video: Color - Orange
»Illumination with active signal from source
»Off with no signal for source
›HDMI Link: Color - Blue
»Tx Unit: Solid illumination from active signal from connected source
»Tx Pass-Through: Solid illumination from active Hot Plug Detection voltage with connected
display/output device
»Rx Unit: Solid illumination from active Hot Plug Detection voltage with connected display/
output device
Rack Mounting
In addition to mounting with the supplied L-Brackets, multiple KD-X444LP units may be mounted
in KD-SMS16 using the side mounting screws. KD-SMS16 is a mounting shelf for Key Digital units
with side mounting screw spacing of 2.912”, 2.582”, or 2.252”.
›Do NOT exceed 12 units as doing so will result in unit damage by overheating.
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.Heed all warnings.
2. Do not use this device near water. Clean only with dry cloth.
3. Install in accordance with the manufacturer’s instructions.
4. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
5. Only use attachments/accessories specified by the manufacturer.
6. 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.
Contacting Key Digital
®
Technical Support
For technical questions about using Key Digital®products, please contact us at:
›Phone: [phone] or 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] or 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

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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 0 - Apr 2022
Key Digital®:: 521 East 3rd Street :: Mount Vernon, NY 10553
Phone : [phone] Fax : [phone] Web : www.keydigital.com
© 2022 Key Digital, Inc. All rights reserved.