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Key Digital
Router
KD-S4x1X-2
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2x1 / 4x1 4K 18G HDMI Switcher with
Auto-Switching, Analog & Digital Audio De-Embed
Operating Instructions
Engineered for Your Success
™
KD-S2x1X-2
KD-S4x1X-2
2 1
Introduction
Key Digital® KD-S2x1X-2/KD-S4x1X-2 are 4K/18G HDMI switchers engineered to offer the best in
quality, performance, and reliability, while providing a cost-effective HDMI switching solution. Designed for
professional audio video installations in presentation, theater, and gaming spaces, KD-S2x1X-2/KDS4x1X-2
enables multiple video sources to connect to a single video display while L/R analog and Optical audio
de-embed ports may be used to feed audio of the selected source into amplifiers, DSPs, or sound bars.
Enable auto-switching to automatically select newly connected/powered sources or sequentially advance
from the currently selected source when it is disconnected/powered off. KD-S2x1X-2/KD-S4x1X-2 HDMI
switchers support all SD, HD, VESA and Ultra HD/4K video standards with HDR header information included
in a variety of 4K EDID handshakes. The switchers feature push button and optical IR switching, status-
monitoring LEDs, and support of HDR10, HDCP 2.2 and 4K.
Key Features
› HDMI Switching: 2/4 HDMI sources to 1 HDMI output/display
› Ultra HD/4K Support: 4096x2160 or 3840x2160 24/25/30/60hz at 4:4:4 (signals up to 18Gbps)
› HDCP Licensing: Fully licensed and compatible with HDCP 2.2
› HDR10 (High Dynamic Range): More life-like images through a greater range of luminance levels
› Resolution Support: Supports all SD, HD, and VESA (VGA, SVGA, XGA, WXGA, SXGA, UXGA) up to
4096x2160p.
› Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:4:4/8 bit
› Audio De-embedding: Audio of the selected HDMI input is output at the digital Optical and analog
3.5mm stereo connectors
› Auto-Switching: Automatic selection of newly detected source and switching from newly
disconnected source via hot plug detection voltage when enabled
› Full Buffer System
™
: Manages TMDS re-clocking / signal re-generation, HDCP authentication to
source & display, and EDID Control handshake
› EDID Management: Internal library with 15 internal EDID handshakes including 4K with HDR in
addition to native EDID data copied from the output/display
› Lossless Compressed Digital Audio: Dolby
®
TrueHD, Dolby
®
Digital Plus, DTS-HD Master Audio
™
,
and Dolby
®
Atmos
› CEC Pass-thru: From connected display to selected HDMI source
› Control: Front panel button, optical IR, RS-232 via Micro USB Port and included adapter cable
› Control System Support: Compass Control
®
Pro ready. Fully controllable by all IR, and RS-232
supported control systems via open API.
Included Accessories
› Power Supply: SK01T-0500100Z 5V/1A DC power jack, screw-in type
› IR Remote Control: KD-RMSWPROK
› Mounting Brackets: 2 L-shaped
› Control Cable: 6ft RS-232 3.5mm TRS to Micro USB, KD-S2X1XUSB2RS
Table of Contents
Introduction .................................................................... 1
Quick Setup Guide ............................................................... 2
Application Example .............................................................. 2
Front & Rear Panel Connections, Buttons, and LEDs .......................................3
IR Remote Control................................................................ 8
RS-232 Commands & Protocol ...................................................... 9
Specifications .................................................................. 11
Important Product Warnings & Safety Instructions: ....................................... 12
Contacting Key Digital
®
........................................................... 13
Warranty Information............................................................. 13
› Note: Please visit www.keydigital.com for the latest product documentation and software downloads.
Product features and specifications are subject to change without notice.
© 2022 Key Digital, Inc. All rights reserved.
Always follow the instructions provided in this Operating Manual.
KD-S2x1X-2 KD-S4x1X-2
Visit product pages for most
recent version of the manual,
quick setup guide, firmware,
control drivers and all
additional downloads.
2 3
Rack Mounting:
In addition to mounting with the supplied L-Brackets, multiple KD-S2x1X-2/KD-S4x1X-2 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.
Front & Rear Panel Connections, Buttons, and LEDs
REAR PANEL
HDMI Inputs
› The 2/4 HDMI inputs are located on the left side of the back panel.
› Blue LED illuminates solid to indicate an active HDMI signal is incoming.
HDMI Output
› 1 HDMI located on the center to right side of the back panel.
› Blue LED illuminates solid when Hot Plug Detection (HPD) is received from the connected display/
output device
Quick Setup Guide
CONNECT:
Test for proper operation of the unit and cables in your system before permanently securing the
unit for final installation. Ensure that you leave enough ventilation space to provide sufficient
airflow and cooling.
1. Begin with the KD-S2x1X-2/KD-S4x1X-2 unit and all input/output devices turned off with power
and CAT cables removed
2. Connect your HDMI sources to the input ports of KD-S2x1X-2/KD-S4x1X-2 unit
3. Connect your HDMI display to the output port of KD-S2x1X-2/KD-S4x1X-2 unit
4. BEFORE connecting power supply to power outlet, screw-in the power supply
to the KD-S2x1X-2/KD-S4x1X-2 unit
5. Connect the analog and/or digital audio amplifiers/receivers via the analog 3.5mm and optical outputs
6. If connecting from control system or BrightSign player, connect supplied USB Micro to RS-232 adapter.
7. After all connections are made, plug-in power supply to power outlet
8. Power on input and output devices
CONFIGURE:
› The default EDID handshake is 4Kx2K@60, 18G, HDR, 2ch audio. Use the EDID rotary
dial to choose the desired handshake that will be provided to the connected sources.
› If Auto Switching is desired, enable via the IR remote or RS-232 command.
CONTROL:
› Switch KD-S2x1X/KD-S4x1X via front panel button, IR remote or via RS-232.
Application Example
Cable / Satellite
Sound Bar
Blu Ray
HDMI
HDMI
HDMI
HDMI
KD-S4x1X-2
Optical Audio
HDMI
Apple TV
HDMI Laptop
Note: 18Gbps signal extension requires all 18Gbps supported HDMI cables.
Produktspecifikationer
| Varumärke: | Key Digital |
| Kategori: | Router |
| Modell: | KD-S4x1X-2 |
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