Key Digital KD-X422POA User manual

Power over HDBaseT/HDMI via CAT5e/6 Extenders,
Series XOA (Tx + Rx Set)
KD-X422POA
Rev 0 – Dec 2016
Operating Instructions
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.
The Experts in Digital Video Technology and Solutions™
Key Digital®Systems :: 521 East 3rd Street :: Mount Vernon, NY 10553
Phone : [phone] Fax : [phone] Web : www.keydigital.com
KD-X422POA_Manual.indd 2-3 12/12/16 3:33 PM

4 1
About KD-X422POA
KD-X422POA HDBaseT/HDMI (Tx & Rx) Extenders with power over HDBaseT are
an HDCP 2.2 compliant product that extend 4K/UHD 24/25/30 (4:4:4) and 4K/
UHD 60 (4:2:0) signals up to 150 ft. using Key Digital
®
KD-CAT6STP1X Super
CAT6A Shielded cable, or up to 125 ft. using a single third-party CAT5e/6 cable.
1080p/60, 1920x1200, 3D signals are extended up to 250 ft. via single Key Digital
®
KD-CAT6STP1X Super CAT6A shielded cable, or up to 230 ft. using a single third-
party CAT5e/6 cable. In addition to HDMI video and audio signals, KD-X422POA
carries IR and RS-232 signals for controlling remotely located equipment. Audio
de-embed ports on the Tx unit enable external audio connectivity with audio
distribution systems and amplifiers.
Key Features
➔ HDBaseT via Single CAT5e/6 UTP/STP Extension: With fully automatic
adjustment of feedback, equalization, and amplification depending on
cabling length
➔ Power Over HDBaseT: Features power extension from Tx to Rx with Power
Over HDBaseT, Rx unit does not require power supply
➔ Signal Extension:
»Up to 150 ft. @ 4K 24/25/30(4:4:4)/60(4:2:0) using KD-CAT6STP1X cabling
»Up to
125 ft. @ 4K 24/25/30(4:4:4)/60(4:2:0) using third-party CAT5e/6
UTP/STP cabling
»Up to
250 ft. @ 1080p / 1920x1200 using KD-CAT6STP1X cabling
»Up to
230 ft. @ 1080p / 1920x1200 using third-party CAT5e/6 UTP/STP
cabling
➔ HDCP 2.2: Compliancy up to HDCP 2.2 and backward compliant
➔HDR10 (High Dynamic Range): More life-like images through a greater range
of luminance levels
➔ 4K/Ultra HD Resolution: Support for 4096x2160 or 3840x2160 24/25/30Hz at
4:4:4/8 Bit or 60Hz at 4:2:0/8 Bit
➔ Deep Color Support: Up to UHD/4K 30Hz 4:2:2/12 bits or 60Hz 4:2:0/8 bit
Table of Contents
About KD-X422POA ...............................................1
Quick Setup Guide ................................................3
Installation and Operation ...........................................3
Application Examples ..............................................4
Connections .....................................................6
Extending IR or RS-232 Control.......................................8
Settings.........................................................12
LED Indicator Lights ...............................................15
RS-232 Commands ...............................................16
Specifications ....................................................19
Important Product Warnings: .........................................20
Safety Instructions: ................................................20
How to Contact Key Digital®.........................................21
Warranty Information ...............................................21
© 2016 Key Digital, Inc. All rights reserved.
Always follow the instructions provided in this Operating Manual.
Please check the Key Digital Website for the most up-to-date Manual.
KD-X422POA_Manual.indd 1 12/12/16 3:33 PM

2 3
➔ HDMI
®
and HDCP Licensing: Fully licensed and compatible with HDCP 2.2 and
HDMI latest technology such as 4K/UHD 4:2:0/8bit at 60f/s
➔ EDID Control: Internal library features 15 default EDID configurations and
native EDID data from Output/Display devices connected via Rx
➔ Hot Plug Detection Control: Enables integrator to choose if active signal
voltage is forced to connected input devices
➔ Full Buffer System
™
: Manages TMDS re-clocking / signal re-generation,
HDCP authentication with source & display, EDID Control handshake,
and Hot Plug control
➔ Low Profile: Super slim chassis design
➔ IR Sensor: Sensor powering via +5V on Tx unit’s IR In port 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 connected
to Tx and Rx units
➔ RS-232: Bi-Directional control to/from Tx and Rx unit on Phoenix connector
➔ Rotary Switch RS-232 Control Mode: Provides control of Tx unit as well as
connectivity status
➔ 3D: Support for standard 3D stereoscopic signal formats
➔ Lossless compressed digital audio: Support for Dolby
®
TrueHD,
Dolby
®
Digital Plus, Dolby Atmos
®
, and DTS-HD Master Audio
™
➔ CEC Support: For inter-device control between input and output HDMI channel
➔ I2C Communication: EDID and HDCP authentication to Display and Source
➔ Control System Support: Fully controllable by all RS-232 supported control
systems via open API: Compass Control
®
, AMX
®
, Crestron
®
, KNX
®
, RTI
®
, Savant,
URC
®
, Leviton
®
etc.
Accessories
➔(1) 12V 2A DC Power Supply (Screw-In Type), (1) Mounting Bracket, (1) IR Emitter,
(1) IR Sensor
➔Only requires power on the Tx unit, which extends power to the Rx unit
Quick Setup Guide
Step 1: Find a safe and convenient location to mount or place units
Step 2: Begin with the Tx, Rx units and all input/output devices turned off with
power cables removed
Step 3: Connect HDMI source to the input port of the Tx unit
Step 4: Connect HDMI display to the output port of Rx unit
Step 5: Connect CAT5e/6 cabling to Tx and Rx units. Use 568-B standard
termination on both ends.
Step 6: If controlling external devices, connect IR emitter and sensor, and RS-232
cabling as needed
Step 7: BEFORE connecting power supply to power outlet, screw-in power supply
on Tx unit.
Step 8: AFTER all connections are made, plug-in power supply to power outlet
Step 9: Power on input/output devices
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.
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.
KD-X422POA_Manual.indd 3 12/12/16 3:33 PM

4 5
Application Example
WiFi
Satellite
IR
IR
HDMI
HDMI
CAT5e/6
IR Out
IR Sensor
IR In
WiFi Router
HDMI
RS-232
Master Controller
KD-MC1000
4K/HDCP2.2
HDMI Switcher
KD-ProCL1
KD-Q220
KD-ProCL1
PCM
KD-X422POA
KD-X422POA
Satellite Remote
Audio DSP
WiFi
HDMI
CAT5e/6
WiFi Router
Master Controller
KD-MC1000
KD-X422POA
KD-X422POA
RS-232
RS-232
IRSensor
MIC
Phantom(48V)
Power
TxD
OFFON
Bridge
Mono
Stereo
RxD
24V 2.71A
Balanced/ Unbalanced AnalogL/R
1 2
Inputs
Outputs
L+ L– R+ R–
Balanced/ Unbalanced
L+ L– R+ R–
+ –
+ –
+ – + –
1x40Watt@8
2x20Watt@4
KD-Q220
PCM
Audio DSP
RS-232
IRSensor
MIC
Phantom(48V)
Power
TxD
OFFON
Bridge
Mono
Stereo
RxD
24V 2.71A
Balanced/ Unbalanced AnalogL/R
1 2
Inputs
Outputs
L+ L– R+ R–
Balanced/ Unbalanced
L+ L– R+ R–
+ –
+ –
+ – + –
1x40Watt@8
2x20Watt@4
WiFi
Satellite
IR
IR
HDMI
HDMI
CAT5e/6
IR Out
IR Sensor
IR In
WiFi Router
HDMI
RS-232
Master Controller
KD-MC1000
4K/HDCP2.2
HDMI Switcher
KD-ProCL1
KD-Q220
KD-ProCL1
PCM
KD-X422POA
KD-X422POA
Satellite Remote
Audio DSP
WiFi
HDMI
CAT5e/6
WiFi Router
Master Controller
KD-MC1000
KD-X422POA
KD-X422POA
RS-232
RS-232
IRSensor
MIC
Phantom(48V)
Power
TxD
OFFON
Bridge
Mono
Stereo
RxD
24V 2.71A
Balanced/ Unbalanced AnalogL/R
1 2
Inputs
Outputs
L+ L– R+ R–
Balanced/ Unbalanced
L+ L– R+ R–
+ –
+ –
+ – + –
1x40Watt@8
2x20Watt@4
KD-Q220
PCM
Audio DSP
RS-232
IRSensor
MIC
Phantom(48V)
Power
TxD
OFFON
Bridge
Mono
Stereo
RxD
24V 2.71A
Balanced/ Unbalanced AnalogL/R
1 2
Inputs
Outputs
L+ L– R+ R–
Balanced/ Unbalanced
L+ L– R+ R–
+ –
+ –
+ – + –
1x40Watt@8
2x20Watt@4
KD-X422POA_Manual.indd 4-5 12/12/16 3:33 PM

6 7
➔De-embedded audio from the source is output in analog format on the L/R
balanced/unbalanced phoenix connector. PCM coaxial digital audio is output on
the RCA connector.
➔Connect 12V 2A DC Power Supply (Screw-In Type).
Rx Unit:
➔Using a short HDMI cable, connect your output / display device to the HDMI port
labeled “HDMI Output”.
➔Connect the CAT5e/6 cable at the port labeled “CAT5e/6 Input”.
➔If you are sending or receiving IR, connect included IR Sensor and/or IR Emitter
Connections
Before making any connections, power off your source and display devices.
Tx Unit:
➔Using a HDMI cable, connect your source device to the HDMI port labeled
“HDMI Input”. For DVI-D/DVI-I sources, use appropriate adapters. For Display
Port, use active converters.
➔Connect the CAT5e/6 UTP or STP cable that connects to the Rx Unit at the port
labeled “CAT5e/6 Output”.
➔Make IR In and Out connections to receive (IR In port) or send (IR Out port)
control signals. Refer to the “Extending IR & RS-232 Control” for more information.
➔Connect a stripped wire to DB9 adapter cable for bi-directional RS-232 control.
Refer to the “Extending IR or RS-232 Control” and the “RS-232 Commands”
section for more information.
KD-X422POA_Manual.indd 6-7 12/12/16 3:33 PM

8 9
Extending IR or RS-232 Control
RS-232:
Bi-directional RS-232 is achieved utilizing the 3-pin phoenix RS-232 port. The pinout
is the same on the Tx and Rx units. Three RS-232 functionality modes are selectable
using the Control rotary.
➔RS-232 Pass-through Mode
»Send and receive (bi-directional) RS-232 commands for controlling remote
equipment. Supports baud rate up to 115,200bps.
➔Control Mode
»Provides control of Tx units as well as connectivity status
»See RS-232 Commands section for more information
➔Firmware Upgrade Mode
»Two different types of firmware may be updated:
MCU, and HDBaseT
RS-232 Cabling
RS-232 cables are available through Key Digital and other wire suppliers, and can
also be fabricated by skilled technicians.
➔If you are transmitting or receiving RS-232, connect to the IR out (RS-232) port
using a 3-wire pigtail to DB9 adapter
➔After all the connections are made, FIRST connect power to the Tx unit using the
included power supplies and then power up your source and display equipment.
Audio De-Embedding Outputs
Balanced/Unbalanced L/R Audio Output (Phoenix Connectors):
➔Provides de-embedded 2ch analog audio output from HDMI input source
Digital Audio Output (Digital Coaxial RCA):
➔Provides de-embedded Digital Audio Output from HDMI input
Notes:
➔There are no volume or tone control features
➔There are no DSP features. Ie, in order to achieve 2ch analog audio output,
the HDMI input source audio format must be 2ch
➔External audio connectors may be set off via RS-232.
See the RS-232 Commands section for more information.
Audio Input
Signal Format
Analog L/R
Output
Digital Audio
Output
2CH PCM Pass-through Pass-through
Multi-Channel PCM MUTE MUTE
DOLBY/DTS MUTE Pass-through
HD Audio MUTE MUTE
KD-X422POA_Manual.indd 8-9 12/12/16 3:33 PM

10 11
IR
Bi-directional IR control extension is supported.
»“IR In” port on the Tx unit extends to the “IR Out” port of the Rx unit
»“IR In” port on the Rx unit extends to the “IR Out” port of the Tx unit
➔IR In: The IR In port is different for the Tx and Rx units. The Tx unit’s IR In port
supports a Serial IR (hardwired) connection. The Rx unit’s IR In port supports an
IR Sensor.
»
Tx Unit / Serial IR:
»A fixed 5V input signal with a 3.5mm mini jack
»IR signal on the tip. Mono or stereo 3.5mm mini jacks are supported, with
the ring open / having no contact.
»Typically fed from a dedicated control system or an IR distribution block
»
Rx Unit / IR Sensor:
»IR Sensors can be connected directly into the Rx unit’s IR In port, without
the need for an external IR distribution block
»IR signal on the Tip, with 5V powering of the IR sensor on the Ring.
IR In Tip Ring Sleeve Typical 3.5mm
Connector-type
Serial IR (Tx) IR In N/C Ground Mono
IR Sensor (Rx) IR In 5V Ground Stereo
➔IR Out:
»Pass-through from signal of corresponding IR In port, as determined by the
position of the Control Rotary
»Driving power: 5V with 32mA minimum current
»Typically connected with an IR emitter
IR Out Tip Ring Sleeve Control Rotary Position
Serial IR IR Out N/C Ground Any
Key Digital RS-232 Cable Pinout Charts
Model Wire DB9 Pin Signal
KD-3.5FDB96
3.5mm Stereo to Female DB9
(sold separately)
Red 2 TxD
White 3 RxD
Black 5 Ground
Green N/C NA
KD-3.5FDB96 with 3.5mm
TRS Connector
KD-3.5FDB96 after
stripping wire
Model Wire DB9 Pin Signal
KD-3.5MDB96
3.5mm Stereo to Male DB9
(sold separately)
Red 2 TxD
Black 3 RxD
Shield 5 Ground
KD-3.5MDB96 with 3.5mm
TRS Connector
KD-3.5MDB96 after
stripping wire
KD-X422POA_Manual.indd 10-11 12/12/16 3:33 PM

12 13
Default EDID Control Table, selected via EDID Control rotary
Position EDID Description EDID Control Rotary
0Copy EDID from CAT5e/6 Output
11080i, 2CH AUDIO
21080i, DOLBY/DTS 5.1
31080i, HD AUDIO
41080p, 2CH AUDIO
51080p, DOLBY/DTS 5.1
61080p, HD AUDIO
74Kx2K@30, 2CH AUDIO
84Kx2K@30, DOLBY/DTS 5.1
94Kx2K@30, HD AUDIO
A4Kx2K@60, 2CH AUDIO
B4Kx2K@60, DOLBY/DTS 5.1
C4Kx2K@60, HD AUDIO
D1280x720p@60 DVI (no audio)
E1920x1080@30 DVI (no audio)
F3840x2160p@30 DVI (no audio)
IR Cabling
Your KD-X422POA includes an IR Sensor and an IR Emitter.
Signal acceptance:
The IR Sensor receives signals from a 90° angle at up to 30 ft.
away. It accepts a maximum IR burst frequency of 55kHz.
Only the included IR sensors are compatible with the KD-X422POA. Third-party IR
Sensors may not be compatible..
The included IR Sensor.
Connects to the IR In port on the Rx unit
The included blinking-type IR Emitter.
Connects to the IR Out port on either the
Tx or Rx unit
Settings
EDID Control
EDID authentication is provided from the KD-X422POA Tx unit to the connected
input / source device. The EDID file (AKA “handshake”) is selected using the EDID
Control rotary on the Tx unit (located on the face of the Tx unit, beneath the decora
plate) and provides a list of compatible video and audio formats as well as digital
data, informing the source device what it should output. Most sources will comply
with a new EDID file without a power-cycle, but each source may behave differently.
KD-X422POA_Manual.indd 12-13 12/12/16 3:33 PM

14 15
Forced Hot Plug Detection (HPD)
Hot Plug Detection (HPD) may be forced on the Tx Rx unit in order to provide
connected devices with necessary voltage to inform the device that a partner
(display) is connected and active. If the Control rotary is set to any HPD Bypass
setting, HPD signals from the output 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 Control rotary to any Forced HPD setting.
Range and Resolution:
Distance performance is significantly increased when using Key Digital
KD-CAT6STP1X Super CAT6/STP Cabling.
➔Up to 150 ft. @ 4K 24/25/30(4:4:4)/60(4:2:0) using KD-CAT6STP1X cabling
➔Up to 125 ft. @ 4K 24/25/30(4:4:4)/60(4:2:0) using third-party CAT5e/6 UTP/
STP cabling
➔Up to 250 ft. @ 1080p / 1920x1200 using KD-CAT6STP1X cabling
➔Up to 200 ft. @ 1080p / 1920x1200 using third-party CAT5e/6 UTP/STP cabling
NOTE: Use shielded metal RJ45 connectors with soldered
ground wires when terminating shielded CAT5e/6.
Key Digital part: KD-RJ45SC (compatible with
KD-CAT6STP1X and other third-party CAT6/STP)
Control Rotary
The Control rotary enables the integrator to choose the
desired setting for RS-232 and Hot Plug Detection control.
The Control Rotary is located on the Tx unit.
IMPORTANT! Please apply light pressure to the Control
rotary when making your selection
Control Rotary Position Assignments:
Position RS-232 Mode Hot Plug Detection Control
0RS-232 Pass-Through Bypass
1RS-232 Pass-Through Bypass
2RS-232 Pass-Through Forced HPD On
3RS-232 Pass-Through Forced HPD On
4RS-232 Pass-Through Bypass
5RS-232 Pass-Through Bypass
6RS-232 Pass-Through Forced HPD On
7RS-232 Pass-Through Forced HPD On
8RS-232 Control Bypass
9RS-232 Control Bypass
AFirmware Upgrade for MCU Forced HPD On
BFirmware Upgrade for MCU Forced HPD On
CFirmware Upgrade for HDBaseT Bypass
DFirmware Upgrade for HDBaseT Bypass
EFirmware Upgrade for HDBaseT Forced HPD On
FFirmware Upgrade for HDBaseT Forced HPD On
KD-X422POA_Manual.indd 14-15 12/12/16 3:33 PM

16 17
Phoenix Terminal Connection Guide
Pin
Signal on Tx Unit
Corresponding Wire (Accessory)
Accessory not included.
See Extending RS-232 and IR
Control section for info on available
Key Digital RS-232 cables.
1
TxD RxD / Pin 2 (Female DB9*)
RxD / Pin 3 (Male DB9*)
2
Ground Ground / Pin 5 (Female/Male DB9)
3
RxD TxD / Pin 3 (Female DB9*)
TxD / Pin 2 (Male DB9*)
Commands are not case-sensitive. Spaces shown below may be excluded.
Carriage return and line feed is required at the end of each string.
Status Command:
KD-X422POA > STA
-------------------------------------------------------------------------
-- Key Digital Systems STATUS --
-------------------------------------------------------------------------
-- KD-X422POA System Address : 00 F/W Version : 1.00
--
-- RS232 : Baud Rate=57600bps, Data=8bit, Parity=None, Stop=1bit --
-- Running Day : 000, Time : 00:03 --
-- HD-BaseT Mode : Normal , Link = ON , Auto Reset = ON --
-- --
LED Indicator Lights
Power:
»Color: Green
»Solid illumination during power on state, as provided by healthy connection
with power supply.
»Steady blink if power is not adequate and/or if there is a connectivity problem
with the KD-X222PO Rx unit
HDMI Active:
»Color: Blue
»Tx Unit: Solid illumination from active signal (TMDS + HPD) reception from
connected source device
»Rx Unit: Solid illumination from active Hot Plug Detection voltage with
connected display/output device
»If Hot Plug Detection is forced on Tx or Rx unit, the respective HDMI
Active light will illuminate solid regardless of HDMI signal from/to connected
source/display.
HDBaseT Link:
»Color: Blue
»Tx Unit: Solid illumination from active link with Rx unit
»Rx Unit: Solid illumination from active link with Tx unit
RS-232 Commands
Connection protocol is as follows:
➔Baud Rate = 57600 bits per second
➔Data Bits = 8
➔Stop Bits = 1
➔Parity = None
➔Flow Control = None
➔Carriage Return: Required
➔Line Feed: Required
KD-X422POA_Manual.indd 16-17 12/12/16 3:33 PM

18 19
Specifications
Technical:
➔Inputs Tx (Each): 1 HDMI, 1 IR In, 1 Bi-Directional RS-232
➔Outputs Tx (Each): 1 CAT5e/6 UTP/STP, 1 IR Out, 1 Balanced/Unbalanced Audio,
1 PCM Audio
➔Inputs Rx (Each): 1 CAT5e/6 UTP/STP, 1 IR In
➔Outputs Rx (Each): 1 HDMI, 1 Bi-Directional RS-232
➔DDC Signal (Data): Input DDC Signal: 5 Volts p-p (TTL)
➔HDMI Video/Audio Signal: Input Video Signal: 1.2 Volts p-p
➔HDMI Connector: Type A, 19 Pin Female
➔RJ45 Connector: Shielded Link Connector, HDBaseT
➔IR Connectors: 3.5 mm connectors
➔RS-232 Connector: 3-pin phoenix terminal
General
➔Regulation: CE, RoHS, WEEE
➔Enclosure: Black Metal
➔Product (Each): 5” x 4.06” x 1.06”, Weight: 0.5 lbs
➔Power (Tx Only): KD-PS12V2ASC, 12V/2A, 100-240VAC,
50-60Hz, Interchangeable head with screw-in connector
➔Accessories: (2) Mounting brackets, (1) IR emitter, (1) IR sensor,
(1) 6 pin terminal plug, (2) 3 pin terminal plug
-- Video Input Status --
-- EDID = 00, PWR5V = ON , Link = ON , HDCP = 2.x, Video = HDMI --
-- --
-- CAT5e/6 Video Output Status --
-- DISP = SAM 2014, HPD = ON , HDCP = ON , DDC = GOOD, OUT = ON , HDMI--
-------------------------------------------------------------------------
Help Command:
KD-X422POA > H
-------------------------------------------------------------------------
-- Key Digital Systems HELP --
-------------------------------------------------------------------------
-- KD-X422POA System Address : 00 F/W Version : 1.00
--
-- Azz : All Commands may have Prex System Address zz=[01-99] --
-- H : Help --
-- STA : Global Status --
-- SPCA xx : Set System Address, xx = [00-99] (00=Single) --
-- --
-- Video I/O Setup Commands: --
-- SPO DBG ON/OFF : Set Output DGB ON/OFF --
-- SPO ON/OFF : Set CAT5e/6 Output ON/OFF --
-- --
-- SPC ART ON/OFF : Set HD-BaseT Auto Reset ON/OFF --
-- SPC RSB z : Set RS232 Baud Rate to z bps, z=[0-4] --
-- [0:57600, 1:38400, 2:19200, 3:9600, 4:4800] --
KD-X422POA_Manual.indd 18-19 12/12/16 3:33 PM

20 21
How to Contact Key Digital
®
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
3Year Product Warranty Policy. http://www.keydigital.com/warranty.htm
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.
KD-X422POA_Manual.indd 20-21 12/12/16 3:33 PM