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521 East 3rd Street, Mount Vernon, NY 10553       
Phone 

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 914.667.9700      Fax 

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 914.668.8666

Web 

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 www.keydigital.com      

KD-MSW4x2 Operating Instructions

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 quality video imaging is important. Key Digital

  

is at the forefront of the video industry for Home 
Theater Retailers, Custom Installers, System Integrators, 
Broadcasters, Manufacturers, and Consumers. We 
provide total video system solutions because we 
know and help drive the technology, the industry, the 
business, and all the latest up-and-coming standards. 
But most of all, we know exactly what you need for your 
unique application - the right solution.

Rev 0 – July 2006

The Fat Boy Series KD-MSW4x2 by Key Digital

‚ is an analog HDTV 4-Input to 2-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 separately and seamlessly switched 
with  the  professional  Fade-to-Black  and  Video  Muting  features.  It  supports  both 
component video (YPbPr) and RGBHV video formats; and S-Video and composite 
video (CVBS), with adapters. Concurrent with the video, it switches and distributes 
PCM coax digital audio, and analog stereo audio (no analog audio for RGBHV video).  
With analog video bandwidths up to 300 MHz, the KD-MSW4x2 handles all HD and 
SD  resolutions  (50  and  60  Hz)  including 1080p/60,  with  no  degradation  in  signal 
quality. It is simple to operate and control via front panel pushbuttons with LEDs to 
monitor the selections, IR remote control, IR Extender, wired IR, and is compatible via 
RS-232 with all control systems.

KD-MSW4x2

4 Inputs to 2 Outputs HDTV Matrix Switcher

MSW4x2_Manual.indd   2-1

8/23/06   4:06:45 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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