521 East 3
rd
Street Mt. Vernon, NY 10553 • www.keydigital.com
Rev 1.1
– Jul, 2022
3
About KD-X444LP
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, and the
Tx unit’s
IR Input port supports 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 propr
ietary 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.
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
o
4K/UHD (18G) with CAT5e/6:
Up to 230ft / 70m; CAT6A STP: Up to 328ft / 100m
o
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.
