Key Digital KD-UPS52U User manual

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4K/18G Multi-Format, Soft Codec Enabling Presentation
Switcher with Auto Switching, 5 Inputs (HDBT, 2xHDMI, DP,
USB-C), 2 Mirrored Outputs (HDBT, HDMI), USB, LAN, ARC,
Audio De-Embed, IR, RS-232, IP Control, CEC Manager™.
Includes Rx.

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Table of Contents
About KD-UPS52U 3
Quick Setup Guide 6
Connect 6
Configure 7
Control 10
Application Examples 12
Mounting Options 14
Connections, Buttons, and LEDs 15
System Integration with KD-CamUSB, KD-Amp220, KD-App 25
TCP/IP and RS-232 Commands 27
Specifications 30
Warranty Information 31
Product Warnings & Safety Instructions 31
Default IP Address: 192.168.1.239
Operation Manual Guide
Please visit www.keydigital.com for the latest product documentation,
firmware, control drivers and software downloads. Product features and
specifications are subject to change without notice
Always follow the instructions provided in this Operating Manual.

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About KD-UPS52U
Key Digital® KD-UPS52U is a 4K/18G KD-App Ready universal presentation switcher + soft-codec enabling
interface with CEC Manager™, auto switching, and audio de-embedding creating a user friendly, simplified
presentation system. KD-UPS52U features two HDMI, 1 Display Port, one USB-C, and one HDBaseT input
which integrates natively with universal presentation + USB switching wall plate transmitters, KD-X4x1WUTx, or
KD-X3x1WUTx, or table mounted KD-PS22UTx (each sold separately). KD-UPS52U also features two USB-A
and one USB-B connectors, enabling connected laptops and computers to connect with web cams, USB
microphones, touchscreen displays, conferencing DSPs, and more. Mirrored HDMI and HDBaseT outputs
enable audience + presenter views and the HDBaseT output marries in with the included KD-X100MRx for
integrating monitors or projectors up to 100m / 328ft away when the selected source is outputting 4K/ UHD (up
to 150m / 492ft at 1080p). Designed for professional audio video installations in conference rooms, board
rooms, classrooms, lecture halls, auditoriums, and more, KD-UPS52U enables connected video sources to be
displayed on up to two connected displays while analog (balanced/unbalanced) and digital (PCM) audio de-
embed ports feed audio of the selected source into an amplifier, DSP, or sound bar. Integrating KD-UPS52U
with KD-AMP220 and KD-CAMUSB will enable an app-ready all-in-one solution for control of video switching,
sound and speech enforcement, and PTZ camera control. Key Digital CEC Manager™ enables basic controls
of the connected displays for a simplistic all-in-one integration system. KD-UPS52U presentation switcher
supports all SD, HD, VESA and Ultra HD/4K video standards with HDR header information included in a variety
of 4K EDID handshakes. In addition to IR, RS-232, and TCP/IP control, KD-UPS52U can also be controlled via
trigger voltage and features status-monitoring LEDs.
Key Features
•Presentation Switcher Kit: Includes KD-UPS52U and KD-X100MRx. Add KD-X4x1WUTx o rKD-
X3x1WUTx wall plate HDBaseT Tx for plug-in on walls, floor and table boxes, or KD-PS22UTx for plug-
in at tables and lecterns.
•Presentation Switching: 1 HDBaseT, 2 HDMI, 1 Display Port, 1 USB-C source selection by push
button, IP, RS-232, IR, auto switching, or trigger control.
•Soft-Codec Enabling System: USB Host + Device ports create connectivity hub for professional USB
cameras and microphones, audio DSP, keyboard, mouse, or touchscreen display with connected
computer
•PTZ USB Camera Integration: Integrates natively with KD-CAMUSB for full PTZ control via KD-App
•KD-AMP220 Control Mode: Command forward to KD-AMP220 for an all-in-one user-friendly control UI
of video switching, audio, and speech enforcement
•KD-App Ready: Network scan & detect populates pre-built GUI including connected display/projector
controls via CEC Manager™

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•Ease of Integration: Complete configuration using Key Digital Management Software™ Pro
•Ultra HD/4K: Supports up to 4096x2160 or 3840x2160 24/25/30/60hz at 4:4:4 (signals up to 18Gbps
bandwidth)
•Auto-Switching: Automatic selection of newly detected source and switching from newly disconnected
source when enabled
•CEC Manager™: Power, volume, and muting controls of the connected display/projector without
additional control wiring. Selection of desired CEC command recipient.
•Audio De-embedding: Audio of the selected source is de-embedded at the unit’s analog L/R
balanced/unbalanced and PCM digital audio connectors
•HDCP Licensing: Fully licensed and compatible with HDCP 2.2
•HDR10+ and Dolby Vision: More life-like images through a greater range of luminance levels
•Power Over HDBaseT: Rx unit (included) and wall plate Tx unit (sold separately) powered by KD-
UPS52U
•Installation: Half-rack width with rack and under-table mounting ears included
•Signal Extension: For resolution and cable quality
o4K/UHD (18G): Up to 100m / 328ft
o1080p: Up to 150m / 492ft
•Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:2:2/12 bit
•Full Buffer System™: Manages TMDS re-clocking / signal re-generation, HDCP authentication to
source & display, EDID Control handshake, and Hot Plug Detection Voltage
•EDID Management: Internal library with 15 internal EDID handshakes including 4K with HDR in addition
to native EDID data copied from the Rx display/device
•RS-232: Bi-Directional control to/from Tx and Rx/Presentation Switch unit
•Unit Control Mode: Provides TCP/IP and RS-232 control and status of/from Tx unit
•Lossless compressed digital audio: Support for Dolby® TrueHD, Dolby® Digital Plus, Dolby Atmos®,
and DTS-HD Master Audio™
•Control System Support: Fully controllable by all TCP/IP and RS-232 supported control systems via
open API.
Accessories
•Qty 1: Power supply, 48V/1.66A, 80W, Model KD-PS80W48VC
•Qty 1: Remote control and battery set (model KD-RMPS)
•Qty 2: Mounting bracket (L-Bracket)
•Qty 4: L-Bracket mounting screw
•Qty 1: Half-rack ear mount
•Qty 1: Short rack ear

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•Qty 4: Rack Ear Screw
•Qty 1: RX Extender (model KD-X100MRx)
•Qty 2: Mounting bracket for KD-X100MRx (L-Bracket)
•Qty 4: L-Bracket mounting screw for KD-X100MRx
•Qty 1: 6-pin blue color terminal block plug
•Qty 1: 6-pin green color terminal block plug
•Qty 3: 3-pin green color terminal block plug
•Qty 1: 6ft Micro USB to USB A data cable (USB 2.0)
•Qty 1: 6ft USB B to USB A data Cable (USB 2.0)
•Qty 1: IR Emitter (3.5mm mono)
•Qty 1: IR Sensor (3.5mm stereo)

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Quick Setup Guide
Begin with the KD-UPS52U and KD-X100MRx, KD Transmitter (sold separately), all source, display
devices, audio system, and any other connected peripherals powered off.
Connect
1. Connect video sources into the HDMI, Display Port, and USB-C input ports of KD-UPS52U
a. Note: For USB-C, cable must be USB-C 3.2 Gen 2 to support AV at the needed bandwidth.
b. (Optional) Connect HDMI, Display Port, USB-C, VGA sources to wall plate / table transmitter
(sold separately). Port connectivity varies by transmitter model.
2. Connect video displays/projectors to the HDMI output ports of KD-UPS52U and/or KD-X100MRX
3. Connect USB hosts and devices. For USB camera, microphone, speakers, audio DSP, keyboard, or
mouse integration, connect USB devices into desired USB A ports and USB host computer to desired
USB B ports at KD-X100MRx, KD-UPS52U, or Transmitter.
a. USB devices must be connected at same location, see USB Modes Selection Table.
b. Ensure USB toggle switches have chosen USB Device or Host as desired.
4. Connect CAT5e/6 cabling from KD-UPS52U’s HDBaseT outputs to KD-X100MRX HDBaseT input and
(optional) from KD-UPS52U’s HDBaseT input to transmitter (sold separately)
5. Connect audio to send audio of the select source into KD-Amp220 use KD-UPS52U’s analog audio de-
embed port. For other audio systems use the digital or analog outputs ports located on KD-UPS52U or
KD-X100MRx.
6. (Optional) Connect RS-232 wiring for Integrated System. If utilizing KD-AMP220 or KD-CAMUSB
integration control mode, connect RS-232 wiring from KD-UPS52U Unit Control TxD and Ground pins
into KD-AMP220 and KD-CAMUSB RxD and Ground. Using a stripped mono or stereo audio cable is
recommended, but other cables will work as well. See below diagram
7. Connect Control System. For KD-App control and/or IP control from a control system or PC, connect
TCP/IP port to network. RS-232 and IR control may also be utilized, but IP control is required for KD-
CamUSB and KD-Amp220 integrated systems.
8. (Optional) Connect display/projector’s IR/RS-232 from control system into pass-thru ports of KD-
UPS52U and IR/RS-232 ports of the KD-X100MRX.
a. Alternatively, KD-UPS52U CEC Manager features can send power on and off commands via
CEC on the HDMI connection.
9. Connect power. Screw-in power supply to the KD-UPS52U unit, and then connect power to outlets.
10. Power on sources, displays, audio systems, connected computers, USB devices and hosts to use
system.

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Integrated Systems Wiring: KD-UPS52U with KD-Amp220 and KD-CamUSB
Configure
Configure KD-UPS52U with Key Digital Management Software Pro (KDMS Pro). Download HERE
1. Connect to KD-UPS52U from your PC using the USB micro port on the face of the unit
2. Open the KDMS Pro software and perform a USB scan (fig. 1a). Choose “NO” and Start Scan when the
USB Device Scan prompt appears (fig. 1b
3. Choose the detected device from the Devices window (fig. 2a)
4. Set the desired Device Name in the KD-UPS52U Information window (fig. 2b)
5. In the Network Settings section of the Properties window, enter the desired IP settings (fig. 2c)
a. IP Address (default is 192.168.1.239)
b. Subnet Mask (default is 255.255.255.0)
c. Gateway (default is 192.168.1.1)
d. Port (default is 23)
e. Note: If using
KD-App,
please do not
change the
port number.
6. Save (fig. 2d)

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7. Set the EDID handshaking to position “A” for 4K video with 2ch audio. Choose setting “4” for 1080p
video with 2ch audio.
8. Refer to the Connections, Buttons, and LEDs section for more information on the remaining control
rotaries, slide switches, etc. Full access to all settings/commands is achieved via terminal session using
Tera Term or PuTTy software.

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Additional configuration steps for control by KD-App and KDMS Pro
9. Set the desired Input/Output names by entering the Input/Output Settings section of the properties
window, and selecting the Change Input/Output Name button (fig. 3a), selecting the desired input/output
and entering the name (fig. 3b)
10. If utilizing KD-CamUSB integration control mode, choose the quantity of cameras needed to control (fig
4a). Press Apply (fig 4b)
a. Note: Controlling more than two cameras will require the use of active third-party RS-232 signal
distribution. Maximum of seven cameras is supported.

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11. If utilizing KD-AMP220 integration control mode, choose the KD-AMP220 Control selection box (fig. 5a)
in the Audio/Video properties section. To control the mix level of KD-AMP220’s microphone input,
choose the selection box for Microphone Control (fig. 5b).
12. Your unit is now ready to control from the KDMS™ Control Panel, KD-App, or by professional control
system.
Control
Option 1: Control via Remote Control
1. Output 1 display/projector control via CEC
2. Output 2 display/projector control via CEC
3. Input selection of KD-UPS52U connected
sources
4. KD-CamUSB (sold separately) IR control

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Option 2: Control via KD-App, KDMS Pro™
KD-UPS52U is controllable by Key Digital’s user-friendly iOS App (downloadable
in the App Store) or Key Digital® Management Software™ (downloadable here).
1. Connect and Configure your KD-UPS52U as described in this Connect &
Configure sections
2. Download and open KD-App and/or KDMS™
3. Ensure the iOS device and/or PC computer are on the same network with
KD-UPS52U
4. Perform a network scan in the KD-App/KDMS™
5. Select and control the selected KD-UPS52U To enter KDMS Pro end-user
mode, key CTRL + ALT + N after selecting the unit in the devices tree.
Option 3: Control via professional control system
KD-UPS52U allows control over serial interface for bi-directional communication.
•For RS-232 control use pins 4, 5, and
6 of the Unit Control port
•For TCP/IP control the default static IP
address is 192.168.1.239, with port 23
•For the past 10 years, most Key Digital matrix switches have supported a standard audio + video
switching command. KD-UPS52U is also controllable by this command, so if you have previously
integrated Key Digital matrixes by third-party control systems you may have success using the same
driver/module.
a. Switching Video + Audio together (two commands supported)
i. SPO01SIyy yy = input number (01-05)
ii. SPOSIyy yy = input number (01-05)
b. Display CEC On / Off
i. SPOxxTVy xx = output number (01-02), y = ON or OFF
•See the TCP/IP and RS-232 Commands section for full command set.

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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
Application Examples
Complete Key Digital Presentation Solution

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CEC Controlled Conferencing Room

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iPad Presentation Switcher and Camera Control
Large Room with Table Plug-in Switcher

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Mounting Options
KD-UPS52U includes hardware for multiple mounting options.
•For mounting in a standard-width rack, use the included half-rack blank and short rack ear
•For mounting under table or on wall, use the included L brackets
•For mounting two units side by side in a standard-width rack, use KD-BKTHF (sold separately)

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Connections, Buttons, and LEDs
Inputs and EDID Handshaking Rotary
HDBaseT (Input 1): Using a CAT5e/6 cable, connect from a compatible KD Transmitter.
•KD-PS22UTx –Black box transmitter with 2x HDMI inputs, and USB host and device ports. Designed for
under-table installation.
•KD-X4x1WUTx –Wall plate transmitter with 2x HDMI, 1x USB-C, and 1x DP input, USB host and device
ports, and CEC display control button pad. Designed for installation in a US triple-gang wall plate on
wall, in a table or floor pocket.
•KD-X3x1WUTx - Wall plate transmitter with 1x HDMI, 1x VGA + L/R, and 1x DP input, USB host and
device ports, and CEC display control button pad. Designed for installation in a US triple-gang wall plate
on wall, in a table or floor pocket.
•4K/UHD (18G): Up to 100m / 328ft
•1080p: Up to 150m / 492ft
•Provides power over HDBaseT to connected transmitter
•Link light to the left of the port illuminates solid from healthy HDBaseT connectivity with Tx unit and
active incoming video signal.
•Does not support Dolby® Vision
HDMI (Input 2 and 3): Using an HDMI cable, connect your HDMI sources.
•Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps
•Supports HDR10 and Dolby Vision
oDolby Vision only available through HDMI inputs & outputs, not HDBaseT.
•Compliant with HDCP 2.2 and previous
•Supports lossless compressed audio formats including Dolby® TrueHD, Dolby® Digital Plus, Dolby
Atmos®, and DTS-HD Master Audio™
•Does not support CEC pass through from connected Rx unit / presentation switch
•Link light to the left of each port illuminates when there is an active HDMI signal passing through.
Display Port (Input 4):Using a Display Port cable, connect your source.
•Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps
•Supports HDR
•Supports Display Port version 1.3 and previous
•Compliant with HDCP 2.2 and previous
USB-C (Input 5):Using a USB-C cable, connect your source.
•Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps

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•Supports HDR
•For USB-C, cable must be USB-C 3.2 Gen 2 to support AV at the needed bandwidth
•Utilizes Display Port over USB-C alt mode
•Supports Display Port version 1.3 and previous
•Compliant with HDCP 2.2 and previous
Supported standard 4K video formats:
EDID Handshaking Rotary
•EDID authentication is provided from the
unit to the connected inputs/sources.
•Inputs/sources connected to a KD
Transmitter receive their EDID
handshake from the KD Transmitter
•The EDID file (AKA “handshake” is
selected using the EDID rotary and
provides a list of compatible video and
audio formats as well as digital data,
informing the source device what it
should outputs.
•Most sources will comply with a new
EDID file without a power-cycle, but
devices do behave differently
•Adjustments may speed up sync time
during source selection

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Outputs
The HDMI and HDBaseT outputs are mirrored. The selected source is viewed on both outputs simultaneously.
HDMI (Output 1): Using an HDMI cable, connect your display or system. For DVI-D/DVI-I sources use an
appropriate adapter. For Display Port, use active adapters.
•Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps
•Supports HDR10
•Compliant with HDCP 2.2 and previous
•Supports lossless compressed audio formats including Dolby® TrueHD, Dolby® Digital Plus, Dolby
Atmos®, and DTS-HD Master Audio™
•Supports CEC Manager™ control of connected supporting display. Does not support CEC pass through.
•Link light to the left of port illuminates when there is HPD from the connected display.
HDBaseT (Output 2): Connect a CAT5e/6 cable to the Rx unit at the HDBaseT Input port.
•4K/UHD (18G): Up to 100m / 328ft
•1080p: Up to 150m / 492ft in Long Range Mode
•Use with included KD-X100MRx.
•Compatible with third party HDBaseT Rx, including projectors, but cannot be guaranteed.
•Provides power over HDBaseT to connected transmitter
•Link light to the left of the port illuminates solid from healthy HDBaseT connectivity with Rx unit.
•Does not support Dolby® Vision
Audio Outputs
•Analog and digital de-embedded audio from the selected source

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•There are no volume or tone control features
•There are no pre-amp features
Analog L/R Balance/Unbalanced
•6-pin terminal block
•Drives audio signals up to 2 VRMS with a sampling rate of 192HHz
•Automatically mutes if audio formatting is not PCM 2ch
•Pin assignment:
oLeft + is Pin 1; Left - is Pin 3; Left Ground is Pin 2
oRight + is Pin 4; Right - is Pin 6; Right Ground is Pin 5
PCM Digital
•RCA coaxial
•SPDIF IEC 60958 format
•Compatible with sampling rates up to 192KHz
•Supports multi-channel Dolby® surround formats up to 5.1 and DTV™ 6.1
•Automatically mutes if audio formatting is not PCM, Dolby®, or DTS™
Service USB Port
•Micro USB port
•Used for configuration and control from PC via KDMS Pro or
third-party control terminal
•Used for firmware updates (consult with Key Digital tech
support before updating firmware)
•Supports USB driver for Windows 10, 7, XP, Mac, Linux
•Will register as “Prolific USB-to-Serial Comm Port in Device
Manager
•Can be used as RS-232 control port. Baud rate is 57,600
unless adjusted otherwise

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Front Panel Buttons
Input Source (Blue)
•Used for selecting the desired source to be routed to both outputs.
•When an input source selection occurs, a Power On CEC command is sent to the display(s) enabled on
the Display Control button section
CEC Manager™ Display Control (Red)
•Choose the display that you desire CEC control commands be sent to
CEC Manager™ Commands (Green & Blue)
•Sends CEC commands via HDMI to the display(s) specified by the Display Control buttons.
•Ensure that CEC is enabled on your displays/projectors. Depending on the manufacturer, HDMI-CEC
may be given a different name. View THIS ARTICLE for a list of CEC names and how to enable CEC on
popular displays.
•With KD-Amp220 mode enabled, Mute, Vol +, and Vol -, buttons send RS-232 commands to the KD-
Amp220 instead of CEC commands to the displays(s)
•When Vol + or Vol –button is held, the command is sent every 0.5 second
•Pressing the A/V Mute button sends a black screen to the output. It is not a CEC command.
Note: Press and hold HDMI 1 + A/V Mute buttons simultaneously for 10 seconds to apply a factory default
reset. Release the buttons when all front LEDs turn off and the unit will re-boot.