key digital KD-FIX418A-2 HDMI Connectivity Fixer with Audio De-Embedding Instruction Manual

: October 30, 2023
: Key Digital

Table of Contents

KD-FIX418A-2 HDMI Connectivity Fixer with Audio De-Embedding
Product Information
Product Usage Instructions
About KD-FIX418A-2
Key Features
Included Accessories
Usage Modes
Rack Mounting
Connections, LEDs, Slide Switches, and Rotaries
AUDIO OUTPUTS
Specifications
How to Contact Key Digital®
Warranty Information
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

KD-FIX418A-2 HDMI Connectivity Fixer with Audio De-Embedding

Product Information

The Key Digital KD-FIX418A-2 is a 4K 18G HDMI fixer that resolves common HDMI integration obstacles related to Hot Plug Detection, EDID handshaking, HDCP authentication, and bandwidth. It supports up to 4096×2160 or 3840×2160 24/25/30/60hz at 4:4:4 (signals up to 18Gbps bandwidth) and is fully licensed and compatible with HDCP 2.2. The device also features audio de-embedding, 4K to 1080p down-convert, HDR10 and Dolby Vision, deep color support, and full buffer systemTM that manages TMDS re-clocking/signal re-generation.

The package includes a power supply and two L-brackets for mounting.

Product Usage Instructions

Quick Setup Guide

Ensure that the KD-FIX418A-2 unit, input and output devices are turned off with power removed.
Connect the HDMI source to the KD-FIX418A-2’s input port.
Connect the HDMI display to the KD-FIX418A-2’s output port.
Connect analog and/or digital audio outputs to an amplifier, DSP, AV receiver, or soundbar.
Screw-in the power supply to KD-FIX418A-2 and plug it into a power outlet.
Power on input and output devices.

Configuration
Use the EDID rotary to choose the desired video resolution and audio format. Use the Forced Hot Plug Detection switch to set the HDMI connectivity voltage to a high state. Use the 4K to 1080p down-convert switch if integrating a 1080p display or projector in a 4K system. Refer to each section in the manual for more information on each setting.

Rack Mounting
In addition to mounting with the supplied L-Brackets, multiple KD-FIX418A-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.

Connections, LEDs, Slide Switches, and Rotaries
The HDMI input is located on the short end beside the power. The blue LED near the HDMI connector illuminates solid to indicate an active HDMI signal.

About KD-FIX418A-2

Key Digital® KD-FIX418A-2 is a 4K 18G HDMI connectivity repair and audio deembedding solution for HDMI extension coupling and signal correction in all AV systems applications. Analog and digital audio de-embedding on 3.5mm analog stereo & optical digital connectors enable integration of HDMI signals into distributed audio systems, audio DSPs, amplifiers, or sound bars. EDID handshake management, forced hot plug detection, and optional 4K to 1080p down-conversion tools help overcome common HDMI integration problems for ease of installation. KD-FIX418A-2 supports a variety of SD, HD, VESA and Ultra HD 4K video standards and has HDR header information included in many of the built-in 4K EDID handshakes for an optimized viewing experience.
Note : Please visit www.keydigital.com for the latest product documentation and software downloads. Product features and specifications are subject to change without notice.

Key Features

HDMI Correction: Resolves common HDMI integration obstacles related to Hot Plug Detection, EDID handshaking, HDCP authentication, and bandwidth
Audio De-embedding: HDMI input audio is de-embedded on an analog 3.5mm stereo and digital optical connector.
4K to 1080p Down Convert: When enabled, resolution conversion is applied to individual outputs(s) based on EDID from the connected display.
Ultra HD/4K: Supports up to 4096×2160 or 3840×2160 24/25/30/60hz at 4:4:4 (signals up to 18Gbps bandwidth)
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
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
Full Buffer SystemTM: Manages TMDS re-clocking / signal re-generation, HDCP authentication to source & display, Hot Plug management, 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
Digital Audio Format Support: DTS-HD Master AudioTM, DTS:X®, Dolby® TrueHD, Dolby Atmos®
ARC Pass-thru: From connected ARC supported display to connected ARC supported HDMI source
CEC Pass-thru: From connected display to selected HDMI source

Included Accessories

Power Supply: 5V/1A (5W) DC power jack, screw-in type. Model SK01T-0500100Z
Mounting: 2x L-bracket

Usage Modes

*Maximum one active/directional HDMI cable may be used for 18Gbps signals

CONFIGURE

Use the EDID rotary to choose the desired video resolution and audio format.
Use the Forced Hot Plug Detection switch to set the HDMI connectivity voltage to a high state.
Use the 4K to 1080p down-convert switch if integrating a 1080p display or projector in a 4K system.
See each section in this manual for more information on each setting.

Rack Mounting

In addition to mounting with the supplied L-Brackets, multiple KD-FIX418A-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.

Connections, LEDs, Slide Switches, and Rotaries

VIDEO INPUTS AND OUTPUTS

HDMI Input:

The HDMI input is located on the short end beside the power.
Blue LED near the HDMI connector illuminates solid to indicate an active HDMI signal is incoming.

HDMI Output :

The HDMI output is located on the short end between the audio de-embed ports.
Blue LED near the HDMI connectors illuminates solid when Hot Plug Detection (HPD) is received from the display/output device and there is an active incoming HDMI signal.
The LED will blink steadily when there is no HPD from the display but an active HDMI signal is incoming.

HDMI Input/Output Port Specifications :

Supports up to UHD/4K @ 50/60 fps [4:4:4], 18Gbps signals
See Supported standard 4K Video Formats table
Supports HDR10
Compliant with HDCP 2.2 and previous
Supports lossless compressed audio formats including Dolby® TrueHD, Dolby® Digital Plus, DTS-HD Master AudioTM, and Dolby Atmos
CEC pass-through from display to HDMI source
For Display Port sources/monitors, use active converters

Supported standard 4K Video Formats

| Resolution| Bandwidth
---|---|---
1| 4K@24/25/30 [4:4:4] 8bit| < 10.2Gbps
2| 4K@24/25/30 [4:2:2] 8/10/12bit| < 10.2Gbps
3| 4K@50/60 [4:2:0] 8bit| < 10.2Gbps
4| 4K@24/25/30 [4:4:4] 10/12bit| < 18Gbps
5| 4K@50/60 [4:2:2] 8/10/12bit| < 18Gbps
6| 4K@50/60 [4:2:0] 10/12bit| < 18Gbps
7| 4K@50/60 [4:4:4] 8bit| < 18Gbps

AUDIO OUTPUTS

Analog L/R Audio Output:

3.5mm stereo jack with de-embedded audio from the selected HDMI source
Drives audio signals up to 1 VRMS with a sampling rate of 192KHz
Automatically mutes if audio formatting is not PCM 2ch

Optical Audio Output:

Optical audio output with de-embedded audio from the selected HDMI source
SPDIF IEC 60958 format
Supports multi-channel Dolby® and DTSTM surround formats up to 5.1
Automatically mutes if audio formatting is not PCM, Dolby®, or DTSTM

Audio Ports Specifications

Each audio output drives audio signals up to 2VRMS with a sampling rate of 192KHz
There are no volume or tone control features
There are no DSP features

Audio Input Signal Format	Audio L/R Output	Digital Audio Output
2ch PCM	Pass-Through	Pass-Though
Multi-Channel PCM	Front L&R Pass-through	MUTE
Dolby DTS	MUTE	Pass-Though
HD Audio	MUTE	MUTE

Service (Factory) USB
This port is for factory servicing only. Does not have standard USB functionality

EDID Handshaking Rotary

EDID authentication is provided from the KD-FIX418A-2 to the connected input/source

The EDID file (AKA “handshake”) is selected using the EDID rotary on the unit 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 devices do behaves differently
Adjustments may speed up sync time during source selection.

Position	EDID Handshake Description	EDID Rotary
0	Copy EDID from HDMI Output

Note : Default position is “0”

IMPORTANT: Please apply light pressure to the EDID rotary when making your selection.

Forced HPD Troubleshooting Tool
In cases of many layers of connectivity or non-standard devices in-line, hot plug detection (HPD) may be lost or drop below standard levels, leading to the video source not detecting a display/sync device and not outputting a signal. A display device may also not detect a connected source in cases of failed hot plug detection. > When ON, Hot Plug Detection voltage is fixed ON to the connected source, informing it that it always has a live sync/display to receive its signal > Standard HPD behavior (bypass) when set to OFF position

4K to 1080p Down Convert Tool
When set to ON, KD-FIX418A-2 will down convert incoming 4K content to 1080p.
All non-4K incoming content passes through without resolution conversion. > When set to OFF, all incoming content passes through without resolution conversion.

Specifications

Technical :

HDMI Input (Each): HDMI Connector, Type A, 19 Pin Female
HDMI Output: HDMI Connector, Type A, 19 Pin Female
HDMI Bandwidth: TMDS bandwidth 18Gbps
DDC Signal (Data): Input DDC Signal – 5 Volts p-p (TTL)
HDMI Video/Audio Signal: Input Video Signal – 1.2 Volts p-p
3.5mm Stereo Audio Output: Line level audio on TRS connector. Drives 1 VRMS line audio output with a sampling rate of 48kHz
Analog Audio Max Output Level: 4dBu on 150k, DC coupling
Optical Digital Audio Output: Follows SPDIF format (IEC 60958). Supports sampling rate up to 192KHz.
Max Output Level: 1Vpp on 75, DC coupling
Audio Bandwidth: 20Hz to 20kHz @ 0dBu
TND + Noise: 0.33% @0dBu @ 1kHz
Power Supply: 5V/1A (5W) DC power jack, screw-in type. Model SK01T-0500100Z

General

Regulation: CE, RoHS, WEEE, EAC
Enclosure: Black metal
Power Supply: USB to micro USB cable (power adapter not included)
Product: 3.78″ x 2.52″ x 0.93″ (94 x 64 x 23.5 mm), Weight: 5.4 oz (152 g)
Packaging: 7.4″ x 5.35″ x 3.14″ (188 x 136 x 80 mm), Weight: 16 oz (453 g)

Important Product Warnings :

Connect all cables before providing power to the unit.
Test for proper operation before securing unit behind walls or in hard to access spaces.
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.

Read and follow all instructions.
Heed all warnings.
Do not use this device near water.
Clean only with dry cloth.
Install in accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Only use attachments/accessories specified by the manufacturer.
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.

How to Contact Key Digital®

Customer Support
For customer support questions please contact us at:

Phone: 914-667-9700
E-mail: customersupport@keydigital.com

Technical Support For technical questions about using Key Digital® products, please contact us at:

Phone: 914-667-9700
E-mail: tech@keydigital.com

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: 914-667-9700
E-mail: rma@keydigital.com

Feedback Please email any comments/questions about the manual to: E-mail: customersupport@keydigital.com

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

Visit product page for most recent version of the manual, firmware, control drivers and all additional downloads

Rev 0 Nov 2022
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 Custom Installers, System Integrators, Broadcasters, Manufacturers, and Consumers. Key Digital® Systems :: 521 East 3rd Street :: Mount Vernon, NY 10553 Phone : 914.667.9700 Fax : 914.668.8666 Web : www.keydigital.com © 2022 Key Digital, Inc. All rights reserved.