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KD-MSW4x2 Operating Instructions

Page 24

KD-MSW4x2 Operating Instructions

Page 2

Operation

Matrix Switching

With all of the video and audio sources connected to the four Input Ports, and the displays and 

audio systems connected to the two Output Ports of the KD-MSW4x2 unit, the matrix switcher is 

ready to operate. The routing of video and audio signals from the available inputs to either output is 

easily implemented using the front panel pushbuttons, and visually verifiable via the LED indicator 

arrays.
The front panel of the unit provides the user with a visual representation of the two outputs.  

Each of the two output sections consists of a large pushbutton switch and an array of four LED 

indicators. Each of these appropriately numbered LED indicators corresponds to one of the four 

available inputs. 
For either display that is connected to the output of the KD-MSW4x2 unit, the desired source input 

is switched by depressing the appropriate pushbutton until the LED indicator corresponding to the 

chosen input is lit. The video and audio sources connected to that input are automatically switched 

to the selected output. The unit also acts as a distribution amplifier, simultaneously routing a single 

input to both outputs, by simply repeating the same procedure for both outputs.

Summary:  Control and Monitoring

Select one of four input sources for each of the two outputs

Front-panel LEDs indicate the selected input, for each output

Control via:

Front panel pushbuttons
IR remote control

Control all the features of the unit using the remote control 
Power the KD-MSW4x2 On and Off
Requires a clear line-of-site between the IR remote control unit  

and the front-panel IR sensor

IR Extender
Wired IR
All control systems (with RS-232)

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Fat Boy Expansion Control

Fat 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 combination requires the following 

successive steps:

Addressing desired Unit:  

 

Depress button 1 through 8 to select the desired unit

Addressing desired Output: 

  

Depress button ‘output 1’ (to select Output 1), or ‘output 2’ (to select Output 2) 

Addressing desired Input:  

 

Depress numerical digits 1 to 4

Additional Product Features

Fade-to-Black

 

The Fade-to-Black feature allows for switching between input/output combinations without the 

usual visual signal noise, glitches, and sync roll that traditionally accompany switching between 

video signals.  The feature momentarily forces the video image to black as the desired source 

input is selected for the chosen output.  This feature is applied automatically and the fade time 

interval is programmable via RS-232 [see the RS-232 Command List].

Video Mute

 

Video Mute enables the user to mute the video signal (the display goes to black) at the chosen 

output.  Activated via IR remote control or RS-232 [see the IR remote control section of this 

manual, and the RS-232 Command List for explicit instructions].

Distribution Amplifier

 

It is also possible under RS-232 control to allow any one of the four inputs to be switched and 

distributed to both outputs.

Power On/Off

 

Turn the KD-MSW4x2 On and Off.  In the power-off mode, all front LEDs are Off and the video 

outputs are muted.

1.

2.

3.

Inputs

Outputs

Power Supply
Wired IR
IR Extender
RS-232

1

2

1

2

3

4

IR Remote Sensor

Use this front-panel pushbutton to
select any of the up to four source
input devices to drive the display and
audio system wired to Output 1.
Press the button and cycle through
Input 1, 2, 3, and 4.

Repeat for Output 2 using the
appropriate Output 2 pushbutton and
LEDs for monitoring the input selection.

Input 1, 2, 3, and 4 LED indicators

MSW4x2_Manual.indd   24-25

8/23/06   4:07:40 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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