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KD-MSW4x2 Operating Instructions

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KD-MSW4x2 Operating Instructions

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Typical Application Example for the KD-MSW4x2 HDTV Matrix Switcher

Detailed Input/Output Descriptions

The interconnection of video and audio equipment in the various formats supported by the KD-

MSW4x2 unit is described here in detail. This section is particularly useful if some source devices 

or displays are only available with S-Video or Component Video formats

High-quality Component Video (YPbPr) and “VGA” (RGBHV) Source Equipment

Some source equipment may have an analog video output that is called Component Video, a 

3-wire video format with the video signals labeled YPbPr. Another common analog video output 

format is RGB (like the “VGA” outputs on a computer), which typically has separate H&V sync 

signals. The KD-MSW4x2 HDTV Matrix Switcher is the perfect choice for switching Component 

Video and RGBHV Video source devices to displays with analog inputs.  

Example:  

Connecting a digital TV set-top receiver with Component Video three-wire YPbPr or 

“VGA” five-wire RGBHV video Outputs to the KD-MSW4x2 HDTV Matrix Switcher Inputs

YPbPr Component Video

Connect the three-wire green, blue and red YPbPr cables from the set-top receiver of choice, to the 

green, blue, and red color-coded connectors of any one of the four Input Ports on the rear of the 

KD-MSW4x2 unit. Connect the white and red analog stereo audio cables from the set-top receiver 

to the white and red connectors of the same Input Port of the KD-MSW4x2 unit. If a digital audio 

coaxial output is available on the set-top receiver, it can then connect to the black-coded PCM 

connector on the KD-MSW4x2 unit.

Connect the green, blue, and red connectors from Output Ports 1 or 2 on the KD-MSW4x2 unit 

to the corresponding component video jacks on the desired display. Connect the white and red 

analog audio jacks from the same Output Port to the corresponding white and red audio jacks on 

the audio system (which may be built into the display). If digital PCM audio is desired from the set-

top receiver, connect a cable from the black connector in the same chosen Output Port to the A/V 

receiver's coaxial digital audio input. 

Audio

Audio

Audio

Audio

Satellite Box

Cable Box

DVD Player

TiVo

KD-MSW4x2

Plasma/LCD

*All Component sources can be 

substituted with RGBHV sources

Com

ponen

t

Com

ponen

t

Com

ponen

t

Com

ponen

t

Com

ponen

t

Audio

RS232 Control

Wired IR

Optical IR

Optical IR

Plasma/LCD

Com

ponen

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Audio

Zone 

2

Zone 

1

For proper operation of the high quality electrical circuits in the KD-MSW4x2 unit, 
do NOT “daisy chain” inputs:

Each input of the KD-MSW4x2 has its own 75 

Ω

 termination

Do NOT feed a source to multiple KD-MSW4x2 inputs without proper 
distribution equipment

CAUTION:  To prevent damage to equipment, do NOT connect the KD-MSW4x2 
digital PCM audio outputs to any analog audio inputs on a display or audio system!

Key Digital

®

 Exclusive Technologies

Supported Technologies

MSW4x2_Manual.indd   18-19

8/23/06   4:07:28 PM

Summary of Contents for KD-MSW4X2

Page 1: ...BoySeriesKD MSW4x2byKeyDigital isananalogHDTV4 Inputto2 Output matrix switcher and distribution amplifier For each of the two displays connected to its output any of up to four source inputs can be se...

Page 2: ...omputers PCs The KD MSW4x2 handles all HD and SD resolutions and is compatible with all standard analog video signal formats including 1080p 1080i 720p 576p 576i 540p 480p 480i 50 Hz or 60 Hz refresh...

Page 3: ...deo B label is for the blue channel for RGBHV video White Connector L H L label is for the left analog stereo audio channel H label is for the horizontal sync for RGBHV video Red Connector R V Right a...

Page 4: ...of Key Digital switchers called Fade to Black and Video Mute Both of these features let the user switch like a pro like in a live studio Fade to Black The Fade to Black feature allows for switching b...

Page 5: ...resolutions 50 and 60 Hz including 1080p 60 with no degradation in video or audio signal quality Since the KD MSW4x2 performs no video or audio processing the video and audio signals remain pure and u...

Page 6: ...xample the factory default for Fade to Black video muting is 240 ms which is equal to 240 x 10 3 0 24 seconds PCM digital PCM Pulse Code Modulation PCM is a sampling technique for digitizing analog si...

Page 7: ...tput displays and or audio systems Use only the external power supply provided with the KD MSW4x2 unit or you VOID the Key Digital Warranty and may potentially damage to the unit and associated equipm...

Page 8: ...e switched and distributed to both outputs Professional Switching Features Fade to Black allows for switching between input output combinations without the usual visual signal noise glitches and sync...

Page 9: ...tor IR Extender sensor Wired IR serial port External power supply connector Examine the Front and Rear Panels Become familiar with the front and rear panels of the KD MSW4x2 unit Front Panel The front...

Page 10: ...ty equal length video cables up to 300 or more CAUTION For proper operation of the high quality electrical circuits in the KD MSW4x2 unit do NOT daisy chain inputs Each input of the KD MSW4x2 has its...

Page 11: ...stereo audio cables from the set top receiver to the white and red connectors of the same Input Port of the KD MSW4x2 unit If a digital audio coaxial output is available on the set top receiver it can...

Page 12: ...onnect the white Y conductor to the green RCA connector of the selected Input Port and connect the yellow C conductor to either the blue or red RCA connector in the same input field Connect the white...

Page 13: ...R remote control IR Extender A rear panel IR sensor is provided ideal to use with an IR Extender like one provided by Xantech The rear panel IR sensor also supports the IR remote control provided with...

Page 14: ...at Boy expansions have multiple KD MSW4x2 units pre wired from the factory Each unit in the expansion is individually addressable Configuring a particular unit with the desired input and output combin...

Page 15: ...r three 3 seconds to confirm the selection Press two digits on the IR remote control to perform the desired input and output switching function First enter the desired video audio output 1 or 2 Simply...

Page 16: ...RS 232 see the RS 232 Command List Activate Video Audio Mute R1 output 1 2 up arrow Deactivate Video Audio Mute R1 output 1 2 down arrow KD MSW4x2 IR Remote Control Function Table In addition to some...

Page 17: ...t to 2 Output matrix switcher and distribution amplifier Matrix Switching Supports Video and Audio Four 4 Input Ports and two 2 Output Ports provided Matrix switch one of up to four inputs to either o...

Page 18: ...atible Video Signals Compatible with all standard analog video signal formats that use 50 Hz or 60 Hz refresh rates including 1080p 1080i 720p 576p 576i 540p 480p 480i Video Characteristics Output sta...

Page 19: ...ase contact us at either Phone 1 914 667 9700 ext 223 E mail customersupport keydigital com Warranty All Key Digital products are built to high manufacturing standards and should provide years of trou...

Page 20: ...KD MSW4x2 Operating Instructions Page 36 KD MSW4x2 Operating Instructions Page 37 Installation Notes Installation Notes MSW4x2_Manual indd 36 37 8 23 06 4 07 55 PM...

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