MICROTRONIX DX-2200 User manual

4056 Meadowbrook Drive, Unit 126
London, ON Canada N6L 1E3
www.microtronix.com
MICROTRONIX
DX-2200
DUAL-VIEW 2X1SDI VIDEO SWITCHER
USER MANUAL –VERSION 3.75

DX-2200 Dual-view
2x2 SDI Switcher
User Manual
Page 2 of 93
Document Revision History
This User Manual provides operating instructions and information on the Microtronix DX-2200 Dual-view
2x1 SDI Video Switcher, (Model PN: DX-2200-SW-02).
The following table shows the document revision history.
Date
Rev.
Description
Jan. 10, 2012
1.00
Initial release
Nov. 12, 2012
1.01
Added Digital zoom feature.
Jan. 09, 2013
1.02
Added commands to show or hide a text string (this is in addition to the existing
command to toggle visibility).
Feb. 14, 2013
2.00
Revised Serial Command structure.
Added 1080i and 1080p video resolutions.
March 1, 2013
2.10
Added NTSC and PAL resolutions.
Added text background & overlay transparency.
Added ‘O’ commands for output mode control.
Serial control mode changed to always be active.
March 12,
2013
2.20
Added new commands to configure the control DIP & Toggle switches and changed
the default DIP switch settings.
Removed the ML command.
Added font size 003 & 004. Add text field reset commands.
Strings in RS232 commands must now be enclosed in quotations.
Fixed a bug with I1, I2 commands in Overlay mode.
Added preset PiP sizes and control of x, y gap.
Increased number of text fields to 12.
Changes to RS232 input to support comment lines and ignore leading white spaces.
May 17, 2013
2.30
Add Mode 7 –two images vertically stacked
June 27, 2013
2.31
Added new section & Table 9: Low Level Text Control Commands & Codes
Aug 14, 2013
2.41
Added new commands for a frame number counter text overlay.
Added a three digit ‘Annn’ command to control transparency with greater resolution.
Aug 26, 2013
2.50
Added alpha blending transition effect in Alpha Blended Overlay Mode. (Table 6)
Added additional Frame Counter modes of operation.
Aug 30, 2013
2.51
Added vertical and horizontal split screen in Alpha Blended Overlay Mode.
Changed transition commands from T to TP…
Added programmable size/position for the primary and secondary layers in Alpha
Blended Overlay Mode
Sep 17, 2013
3.00
Added zoom control commands for center position and window selection.

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Changed zoom to be controlled for selected/non-selected input instead of by input
connector number.
Added alpha blending effects for secondary layer.
Changed second alpha set by TPB / TSB commands to apply to both transition
effects and split screen modes.
For Mode 5, changed ‘I1’,’I2’,’IT’ to switch inputs and ‘T’ to apply inverse alpha for
visibility reversal of the two inputs.
Added support for setting size in Alpha Blended mode in percent.
Nov 28, 2013
3.01
Fix a problem causing improper configuration or no video output when the unit
powers up with a saved configuration and the video inputs have been connected
before power up.
Add S0, S1, ST commands.
Mar 18, 2014
3.10
Add firmware update capability over RS232.
Add SnnSN, SnnHN, SnnVN commands to change text field visibility without updating
the display.
Changes to command parsing.
Nov 14, 2014
3.20
Add support for Rev E PCB.
Fonts are loaded at first use instead of power up so the unit starts faster.
Add fonts containing selected Wingding characters
Add selected extended ASCII characters to the Tahoma fonts.
Feb 11, 2015
3.50
Add new 'S' commands to support rectangle drawing and graphic images on the
overlay.
Add section about the DX-2200 Uploader.
Add the 'L' commands to control the overlay layer.
Add baud rate change command.
Product now supports 48 fields on the overlay layer instead of 12.
Add more information about image field transparency and background.
Jun 03, 2015
3.60
Add additional Tahoma fonts
Add capability for G and S commands to operate on a range of fields
Add S/GnnNm and S/GnnJmm commands.
Jun 25, 2015
3.61
Add additional Tahoma size 48 fonts and Bitstream Vera Mono Fonts
Updated Model number due addition of SDI Loop Output port and new enclosure
Update pictures of the enclosure and the DX-2200 board assembly
Oct 04, 2016
3.65
Fix an issue causing slow updates in the SF0 buffer update mode
Jan 17, 2017
3.66
Fix a problem with the 'TD' command.
Add PiP position presets P5, P6, P7, P8
Add U2 command
Add the APn and AFn transparency commands
Changed default DIP switch control mode to U2
Add RIn, RSn commands to report input video resolution
Apr 04, 2017
3.67
Changed the zoom range permitted and updated the command description
Jul 20, 2017
3.68
Added one additional arrow character to the Wingding fonts at code 005F
Aug 15, 2017
3.69
Add zoom commands ZSP2, ZPP2, ZSP3, ZPP3, ZSLA, and ZPLA.
Aug 24, 2017
3.70
Added configuration bypass function

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Aug 29, 2017
3.71
Fix an issue when using ZSP3 / ZPP3 mode with interlaced video
Feb. 6, 2018
3.72
Updated Appendix C outlining Serial Port Communication
Added section numbering to document layout
Mar. 21, 2018
3.75
Updated the Tahoma 18 regular font to correct a character spacing issue
NOTE: The graphics overlay feature requires the use of the DX-2200 Software Uploader utility which is
used to upload graphic images into the unit. Contact s[email protected]om for the latest release of the
DX-2200 firmware and the Software Uploader utility.

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How to Contact Microtronix
E-mail:
Sales Information: [e-mail]
Support Information: [e-mail]
Website:
General Website: http://www.microtronix.com
FTP Upload Site: http://microtronix.leapfile.com
Phone Numbers:
General: [phone]-0091
Fax: [phone]
Product Design Customizations
Microtronix can customize the functionality of the Dual-view 2x1 SDI Video Switcher software to customer
requirements. Contact Microtronix sales ([e-mail]) with your requirements.
Safety Critical & Life System Applications –Notice to User
The Microtronix DX-2200 SDI Video Products are not designed or approved by Microtronix for use in safety-
critical or life-critical system or application in which a failure or malfunction may result in one (or more) of
the following outcomes: (a) death or serious injury to people, (b) loss or severe damage to
equipment/property, or (c) environmental harm.
Microtronix assumes no liability for any consequential damages –whether direct or indirect –if the product
is used in this type of application.

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Table of Contents
1Key Product Features............................................................................................................................. 11
1.1 Supported Functionality................................................................................................................... 11
2Introduction............................................................................................................................................. 12
2.1 Text Overlay OSD Features ............................................................................................................ 12
3Hardware ................................................................................................................................................ 13
3.1 Power & Operating Requirements................................................................................................... 13
3.1.1 AC Power Adapter.................................................................................................................... 13
3.1.2 Example of 14.4VDC Lithium Battery....................................................................................... 14
3.2 Environmental Operating Limits ...................................................................................................... 15
4Operation................................................................................................................................................ 16
4.1 Display Modes................................................................................................................................. 16
4.1.1 Display Mode 1: Full-screen 2x1 Switcher............................................................................... 16
4.1.2 Display Mode 2: Picture-in-Picture........................................................................................... 16
4.1.3 Display Mode 3: Dual view, Picture-and-Picture...................................................................... 16
4.1.4 Display Mode 4: Split Screen ................................................................................................... 16
4.1.5 Display Mode 5: Alpha Blended Overlay.................................................................................. 17
4.1.6 Display Mode 6: Standby Switcher .......................................................................................... 17
4.1.7 Display Mode 7: Dual-view, Vertically Stacked........................................................................ 17
4.2 Sample Outputs............................................................................................................................... 17
4.3 Default Startup Configuration .......................................................................................................... 19
4.4 LED Status Indicators...................................................................................................................... 19
4.5 Output Video Format ....................................................................................................................... 20
4.5.1 Video Output Modes 1 & 3 ....................................................................................................... 20
4.5.2 Video Output Mode 2 ............................................................................................................... 20
4.5.3 Default Output Video Mode...................................................................................................... 21
4.6 Input Video Format.......................................................................................................................... 21
4.7 Video Buffering and Delay............................................................................................................... 21
4.8 SERIAL & MANUAL Control............................................................................................................ 21
4.8.1 SERIAL Mode of Operation...................................................................................................... 22
4.8.1.1 Serial Port Control Commands ......................................................................................... 22
4.8.1.2 Input Selection SERIAL Commands................................................................................. 23
4.8.1.3 Input Auto Switch SERIAL Command............................................................................... 24
4.8.1.4 Alpha Blending Effects SERIAL Commands .................................................................... 24
4.8.1.4.1 Example 1a:................................................................................................................... 26
4.8.1.4.2 Example 1b:................................................................................................................... 27
4.8.1.5 Mode Control SERIAL Command..................................................................................... 27
4.8.1.6 Alpha Blended Overlay Size and Position SERIAL Commands....................................... 27
4.8.1.6.1 Example 1a:................................................................................................................... 29
4.8.1.6.2 Example 1b:................................................................................................................... 29
4.8.1.7 Picture-in-Picture Position & Size SERIAL Commands.................................................... 30
4.8.1.8 Alpha Blending Transparency SERIAL Command ........................................................... 31
4.8.1.9 Baud Rate SERIAL Command.......................................................................................... 33
4.8.1.10 Graphic Overlay SERIAL Commands............................................................................... 34
4.8.1.10.1 Graphic Fields ............................................................................................................. 34
4.8.1.10.2 Reset Graphic Field..................................................................................................... 35
4.8.1.10.3 Graphic Field Visibility................................................................................................. 35
4.8.1.10.4 Update Graphic Overlay.............................................................................................. 35
4.8.1.10.5 Coordinate System and Field Position........................................................................ 35
4.8.1.10.6 Line Color and Transparency...................................................................................... 36
4.8.1.10.7 Background Color And Transparency......................................................................... 37
4.8.1.10.8 Text Font ..................................................................................................................... 37
4.8.1.10.9 Graphic Field Type...................................................................................................... 40

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4.8.1.10.9.1 Text Fields –Field Type 1 ......................................................................................40
4.8.1.10.9.2 Rectangle Fields –Field Type 2 .............................................................................41
4.8.1.10.9.3 Rectangle Field Display Example...........................................................................42
4.8.1.10.9.4 Corner Marker Fields –Field Type 3......................................................................42
4.8.1.10.9.5 Target Marker Fields –Field Type 4.......................................................................43
4.8.1.10.9.6 Image Fields –Field Type 5 ...................................................................................43
4.8.1.10.9.7 Rectangle XYWH –Field Type 6............................................................................44
4.8.1.11 Sample Text Field Commands.......................................................................................... 50
4.8.1.11.1.1 Example 1:..............................................................................................................50
4.8.1.11.1.2 Example 2:..............................................................................................................51
4.8.1.12 Low Level Text Control Commands.................................................................................. 52
4.8.1.12.1 Application Example 1................................................................................................. 53
4.8.1.12.2 Application Example 2................................................................................................. 53
4.8.1.13 Frame Counter Overlay SERIAL Commands................................................................... 53
4.8.1.13.1 Frame Counter Mode 0 ............................................................................................... 53
4.8.1.13.2 Frame Counter Mode 1 ............................................................................................... 53
4.8.1.13.3 Frame Counter Modes 2 –4 ....................................................................................... 54
4.8.1.13.4 Sample Frame Counter Commands............................................................................ 55
4.8.1.13.4.1 Frame Counter Example 1:.....................................................................................55
4.8.1.13.4.2 Frame Counter Example 2:.....................................................................................55
4.8.1.13.4.3 Frame Counter Example 3:.....................................................................................56
4.8.1.14 Overlay Control SERIAL Commands................................................................................ 58
4.8.1.15 Layer Control SERIAL Commands................................................................................... 58
4.8.1.15.1 Low Level Buffer Control............................................................................................. 59
4.8.1.15.2 Visibility of Layers........................................................................................................ 59
4.8.1.15.3 Enabling and Disabling Layers.................................................................................... 59
4.8.1.15.4 Re-Sizing Overlays...................................................................................................... 59
4.8.1.15.5 Moving An Overlay...................................................................................................... 59
4.8.1.16 Digital Zoom Command .................................................................................................... 61
4.8.1.17 User Interface Commands................................................................................................ 64
4.8.1.17.1 DIP Switch Assignments ............................................................................................. 64
4.8.1.17.2 Toggle Switch Assignments ........................................................................................ 64
4.8.1.18 User Interface Function Configuration .............................................................................. 64
4.8.1.19 Resetting DX-2200 Switches to Factory Default Configuration........................................ 65
4.8.1.20 Recommendations for DX-2200 Configuration................................................................. 65
4.8.1.21 DX-2200 Example Configuration Command File.............................................................. 67
4.8.1.22 Output Video Format Command....................................................................................... 68
4.8.1.23 Configuration Flash Serial Commands............................................................................. 69
4.8.1.24 Other Serial Command Codes.......................................................................................... 70
4.8.1.24.1 Serial Port Reset Serial Command ............................................................................. 70
4.8.2 MANUAL Mode of Operation.................................................................................................... 71
4.8.2.1 Toggle Switch.................................................................................................................... 71
4.8.2.2 Bypass the Saved Configuration Using the Toggle Switch............................................... 72
4.8.2.3 DIP Switch Settings........................................................................................................... 72
5DX-2200 Software Upload Utility ............................................................................................................ 73
5.1 Firmware Update Procedure ........................................................................................................... 73
5.2 Uploading Images............................................................................................................................ 73
6Extended Font Tables............................................................................................................................. 74
6.1 Wingding Font.................................................................................................................................. 74
6.2 Extended ASCII Fonts..................................................................................................................... 75
7Product Warranty.................................................................................................................................... 76
7.1 Hardware Warranty.......................................................................................................................... 76
7.2 Firmware Warranty.......................................................................................................................... 76
7.2.1 Limited Liability......................................................................................................................... 76
Appendix A: Internal Circuit Board Description......................................................................................... 78
A.1 SDI Video Interfaces........................................................................................................................ 79

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A.2 RS-232 Serial Control Port.............................................................................................................. 79
A.2.1 RS-232 3-Pin Header, J2......................................................................................................... 79
A.3 Power Requirements....................................................................................................................... 80
A.3.1 Power Connectors.................................................................................................................... 80
A.4 JTAG Header................................................................................................................................... 80
A.4.1 JTAG Firmware Upload Procedure.......................................................................................... 80
A.5 Reset Pushbutton SW1 ................................................................................................................... 81
A.6 Board Mechanical Dimensions........................................................................................................ 81
Appendix B: USB to RS-232 Serial Port Adapter...................................................................................... 83
B.1 ICUSB232V2 Software Drivers........................................................................................................ 83
B.1.1 Installation of ICUSB232V2 Serial Driver and Terminal Emulator Program ............................ 83
B.2 Establishing Serial Communications............................................................................................... 84
Appendix C: Regulatory Compliance Information ..................................................................................... 88
C.1 Industry Canada (IC) ....................................................................................................................... 88
C.2 Federal Communications Commission (FCC) Declaration of Conformity....................................... 88
C.3 CE Declaration of Conformity.......................................................................................................... 89

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Listing of Tables
Table 1: Description of LED Status Indicators 20
Table 2: Serial Port Command Acknowledgement Codes 22
Table 3: Function of the Inputs for Each Display Mode 23
Table 4: Input Selection SERIAL Command Codes 23
Table 5: Input Auto Switch Serial Command Codes 24
Table 6: Alpha Blended Overlay Transition Effects 25
Table 7: Mode Control SERIAL Command Codes 27
Table 8: Alpha Blended Size and Position Control SERIAL Command Codes 28
Table 9: PiP Control Serial Command Codes 31
Table 10: Mode-Dependent Transparency SERIAL Command Codes 32
Table 11: Non-selected Input Transparency Command Codes for Alpha Blended Overlay Mode 32
Table 12: Non-Selected Input Transparency Command Codes for PiP Mode 33
Table 13: Selected Input Transparency Command Codes for Alpha Blended Overlay Mode 33
Table 14: Text and Symbol Fonts 38
Table 15: Graphic Overlay SERIAL Command Codes 45
Table 16: Low Level Text Command Codes 52
Table 17: Frame Counter Overlay SERIAL Command Codes 56
Table 18: Overlay Control SERIAL Command Codes 58
Table 19: Layer Control SERIAL Command Codes 60
Table 20: Digital Zoom Command Codes 62
Table 21: User Interface Command Codes 66
Table 22: Output Video Format Command Codes 69
Table 23: Flash Serial Command Codes 70
Table 24: Other Serial Command Codes 70
Table 25: Operation of 2-Position Momentary Toggle Switch 71
Table 26: Operation of the 4-Position DIP Switch 72
Table 27: Windings Character Table 74
Table 28: Extended ASCII Character Table 75
Table 29: RS-232 Serial Port DB9 Pin Assignments 79
Table 30: RS-232 3-Pin Header, J2 79

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Listing of Figures
Figure 1: DX-2200 –Dual-view 2x1 SDI Video Switcher 13
Figure 2: 12Vdc 1.33A 100-240VAC Power Adapter 14
Figure 4: Pin Assignments of 2-pin Power Plug 14
Figure 5: 14.4VDC Lithium Batter and D-TAP Cable 15
Figure 3: Digital Zoom PiP 17
Figure 4: Dual-view –Picture-and-Picture display with text & time code Frame Counter 18
Figure 5: Dual-view –Vertically Stacked with text OSD 18
Figure 6: Alpha Blended PiP with Text Overlay OSD 18
Figure 7: SDI Input LEDs 19
Figure 8: SDI Out & Power LEDs 19
Figure 9: Alpha Blended Vertical Split column 400 –Example 1a 26
Figure 10: Alpha Blended Vertical Split column 900 –Example 1b 27
Figure 11: Alpha Blended with scaling –Example 1a 29
Figure 12: Alpha Blended Vertical split with frame counter –Example 1b 30
Figure 13: Samples of active text and graphic logo 36
Figure 14: Samples of transparent text and background 37
Figure 15: Sample of the available Tahoma font sizes 39
Figure 16: Character set - codes 20-7F and A0-FF 40
Figure 17: Sample of Rectangle, Target Marker and Text 44
Figure 18: Sample of Corner Markers, Target and Text 45
Figure 19: Example 1 - Red text OSD with white background 51
Figure 20: Example 2 –Sample of default text 52
Figure 21: Frame Counter text display –Example 2 55
Figure 22: Frame Counter text display –Example 3 56
Figure 23: DX-2200 –Dual-view 2x1 SDI Switcher Board 78
Figure 24: JTAG Cable Connection 80
Figure 25: DX-2200 Board (PN: P4115-SW-02) Mechanical Drawing 81
Figure 26: USB to DB9 RS-232 Serial Port Adapter Kit 83
Figure 27: PuTTY Session User Settings 85
Figure 28: PuTTY Terminal Settings 85
Figure 29: PuTTY Serial Port Settings 86

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1 Key Product Features
The key hardware features of the DX-2200 –Dual-view 2x1 SDI Video Switcher (Model PN:
DX-2200-SW-02) includes:
•Two 75Ω SD/HD-SDI input ports
•Two 75ΩSD/HD-SDI output ports
oOne the Switcher output
oOne loop through output of SDI input port 1
•One DB9, RS-232 Serial Control Port
Note: With custom DX-2200 firmware, the RTS & CTS modem signals on the DB9 RS-232 Serial Port
can be configured to operate as a second Serial Data Port with RS-232 Receiver and Transmitter
signals. A custom serial “Y” cable is used to bring out the two ports.
1.1 Supported Functionality
The DX-2200 2x1 SDI Switcher supports the following functionality:
•Digital switching between 2 SDI inputs using switches or a serial control port commands
•Glitch-free video switching between SDI inputs and modes of operation
•Video formats:
o720p @ 25 / 29.97 / 30 / 50 / 59.94 / 60 fps
o1080i @ 25 / 29.97 / 30 fps
o1080p & 1080PsF @ 23.98 / 24 / 25 / 29.97 / 30 fps
oNTSC @ 59.94 fps
oPAL @ 50 fps
•Video Modes:
o2x1 (Full-screen) Switcher
oAlpha blended Picture-in-Picture with size and position control,
oDual view, Picture-and-Picture,
oSplit screen,
oAlpha blended overlay, and
oStandby switcher.
•Text overlay OSD:
oUp to 48 independent Graphic Fields
oFields support Text, Rectangle, Corner Marker, Target Marker, and Image Field types.
oFilled or open rectangles
oSize, color, transparency and position control
oConfigurable background color for text
oAlpha blended text and background
oAlpha blending of graphic fields
•Output video Frame Counter text overlay display,
•Alpha blended video switching transition effects,
•Digital Zoom: 28 steps of 0.25 from 1x to 8x,
•User defined operation of DIP & Toggle switches
Note: The text/graphics overlay OSD is supported in progressive but not in either interlaced or
Progressive segmented Frame (PsF) video formats.

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2 Introduction
The Microtronix DX-2200 –Dual-view 2x1 SDI Video Switcher (Model Part Number: DX-2200-SW-02) is
a high performance dual input SDI Video Switcher supporting enhanced video capabilities including: 2x1
glitch-free video switching, picture-in-picture (PiP), picture-and-picture (PAP), Split-Screen, text overlay / on
screen display (OSD), Alpha Blending and Digital Zoom. The product is available as a stand-alone product
in an aluminum enclosure or as an open printed circuit board for incorporation into embedded video system.
The unit is designed for use in broadcast, professional video recording and high-end surveillance
applications.
To ensure glitch-free continuous/artifact free video output, the two input SDI video streams are firstly frame
synchronized then switched during the vertical interval period when a frame is complete. Additional frame
buffers are used to eliminate artifacts which can occur when operating in a PiP or PAP mode during which
scalers or clippers are being used.
When processing interlaced video, a field detector is used to synchronize the input frame buffers and video
processing to ensure the correct alignment of the video fields when switching between the video streams or
swapping PiP or PAP displays. The output video format can be the same as the format detect on the SDI
input 1 (SDI-1) video source, or can be programmed independently.
The product supports synchronized switching of SD / HD SDI video formats. Text overlay is supported on
progressive video only.
The units can be configured to retain the user configuration in on-board flash during power ON / OFF power
cycles.
2.1 Text Overlay OSD Features
The DX-2200-SW supports text overlay OSD in all display modes of operation. Features of the text overlay
OSD include:
1) Display of 48 independent Fields of up to 96 characters.
2) Alpha blending of the text on the video screen.
3) Active Frame Counter.
4) Independent color selection of text fields.
5) Configurable background color.
6) Opacity control.
7) Independent ON/OFF control of text fields.
8) X-Y position control.
9) Permanent retention of text fields in flash memory.
10) Eight font / text size combinations.
The text is supplied to the DX-2200 Switcher through the RS-232 serial port. The user can optionally store
the text fields in the on-board flash in which case they will be retained power ON/OFF power cycles.
Note:The Text/graphic overlay feature is supported in progressive video formats only.

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3 Hardware
The DX-2200 –Dual-view 2x1 SDI Video Switcher is available as a stand-alone product supplied in an
enclosure as show in Error! Reference source not found. below or as an open-frame board (for building
into embedded video system) as shown in Error! Reference source not found. shown in Appendix B.
Figure 1: DX-2200 –Dual-view 2x1 SDI Video Switcher
3.1 Power & Operating Requirements
The DX-2200-SW product is powered from either a 5 –12Vdc 10W (100-240VAC 50/60Hz) regulated
switching power adapter with a 2-pin circular plug (female) connector (Switchcraft PN: 16282-2SG-311), or
optionally from a 14.4V Lithium ion brick battery.
3.1.1 AC Power Adapter
The DX-2200-SW unit has a current draw of 650mA when operating from at 12VDC regulated power source.
A picture of the AC power adapter is shown in the figure below.

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Figure 2: 12Vdc 1.33A 100-240VAC Power Adapter
Figure 3: Pin Assignments of 2-pin Power Plug
3.1.2 Example of 14.4VDC Lithium Battery
A picture of a 14.4VDC the AC power adapter is shown in the figure below.

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Figure 4: 14.4VDC Lithium Batter and D-TAP Cable
Microtronix does not sell Lithium Ion batteries. The 14.4VDC D-TAP adapter cable (shown in the figure
above) can be ordered using Microtronix part number D-TAP-2P-C
3.2 Environmental Operating Limits
The DX-2200 unit uses passive convection cooling based on unrestricted airflow around the unit. The
environmental operating limits are as follows:
Ambient Temperature Range: 0C to 40C
Relative Humidity: 0 to 95% non-condensing.

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4 Operation
4.1 Display Modes
The DX-2200 Switcher supports the display of the SDI video either full-screen or in a variety of dual-viewer
window modes. The display modes include:
•Mode 1: Full-screen 2x1 Switcher
•Mode 2: Picture-in-Picture,
•Mode 3: Dual view, Picture-and-Picture –side-by-side,
•Mode 4: Split screen,
•Mode 5: Alpha blended overlay, and
•Mode 6: Standby Switcher.
•Mode 7: Dual view, vertically stacked
The Text Overlay (On Screen Display) is supported in all Display Modes for progressive video formats only.
The Text Overlay is always the top layer in the output video mix.
The Frame Counter capability is supported in all Display Modes for progressive video formats only.
The Zoom capability is supported in all Display Modes. Either input can be zoomed. Except in Display Mode
4 (Split Screen), the zoom can be configured either as zoom percentage and center position, or as top left
corner and size. In Display Mode 4, only the zoom factor can be set and the zoom position cannot be
changed.
4.1.1 Display Mode 1: Full-screen 2x1 Switcher
In the Full-screen Switcher mode, the selected input is displayed full screen and the unit can switch from one
input to the other.
4.1.2 Display Mode 2: Picture-in-Picture
In Picture-in-Picture (PiP) mode, the selected input is displayed full and the other input is displayed as a
picture in picture with configurable size, position and transparency (alpha blending). Using either the toggle
switch or serial commands, the DX-2200 can switch between the inputs selected for display full screen and
for the PiP.
4.1.3 Display Mode 3: Dual view, Picture-and-Picture
In the Picture-and-Picture (PAP) mode, the images are scaled to display both sources side by side. The
selected input is displayed on the left side of the screen, and the other input is displayed on the right.
Using either the toggle switch or serial commands, the DX-2200 can switch inputs to interchange the left and
right side images.
4.1.4 Display Mode 4: Split Screen
In the Split Screen mode, half of each input image is displayed. The left half of the selected input is
displayed on the left side of the output video, and the right half of the other input is displayed on the right
side of the output video.
Using either the toggle switch or serial commands, the DX-2200 can switch inputs to interchange the left and
right side images.

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4.1.5 Display Mode 5: Alpha Blended Overlay
In the Alpha Blended Overlay mode, both images are displayed with configurable alpha blending of the
images. The selected input is displayed over a black background, with the non-selected layer mixed on top
of it. The alpha of each input can be adjusted and the two images can be zoomed, moved, and re-sized in
the output video.
4.1.6 Display Mode 6: Standby Switcher
The Standby Switcher automatically switches between the two inputs sources. The selected input is the
preferred source, but if no signal is available the other source will be displayed. The DX-2200 returns to the
preferred source if the signal is restored.
4.1.7 Display Mode 7: Dual-view, Vertically Stacked
In the dual-view vertically stacked mode, the images are scaled to display both sources one above the other.
The selected input is displayed at the top of the screen, and the other input is displayed below it.
Using either the toggle switch or serial commands, the DX-2200 can switch inputs to interchange the upper
and lower images.
4.2 Sample Outputs
Samples of the various output display modes are shown in the following figures.
Figure 5: Digital Zoom PiP

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Figure 6: Dual-view –Picture-and-Picture display with text & time code Frame
Counter
Figure 7: Dual-view –Vertically Stacked with text OSD
Figure 8: Alpha Blended PiP with Text Overlay OSD

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4.3 Default Startup Configuration
The power up configuration is determined by both the DIP switch setting and the configuration saved in
flash. The factory default setting has no saved configuration in flash and the following DIP switch settings:
Table 4: Default DIP switch (SW4) setting
Switch
Setting
1
Off
2
Off
3
Off
4
Off
The factory default power on or reset configuration is set to operate in Mode 1, the full-screen 2x1 video
switcher. The unit will initially display SDI input 1 (SDI-1) on the output. If there is no input signal (or if it
cannot be properly detected), the SDI output will display black.
User specific setups can be stored in flash to enable the DX-2200 to start in other modes, for example, with
a PiP or PAP configuration or with a preset text overlay.
4.4 LED Status Indicators
The location of the 5 LEDs is show in the following two figures.
Figure 9: SDI Input LEDs
Figure 10: SDI Out & Power LEDs

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The operation of the LEDs is summarized in Table 1 below.
Table 1: Description of LED Status Indicators
LED
Color
Use
Mode of Operation
Input-Top
(Board D4)
Red
SDI Input 1
OFF: SDI 1 input not available
Flashing: SDI 1 input available
ON: SDI 1 input available and selected as primary input
Input-Bottom
(Board D4)
Red
SDI Input 2
OFF: SDI 2 input not available
Flashing: SDI 2 input available
ON: SDI 2 input available and selected as primary input
Input
(Board D3)
Green
Power
ON: Power ok
Output-Top
(Board D5)
Red
SDI Input 1
Out
OFF: SDI 1 input not available
Flashing: SDI 1 input available
ON: SDI 1 input available and selected as primary input
Output-Bottom
(Board D5)
Red
SDI Input 2
Out
OFF: SDI 2 input not available
Flashing: SDI 2 input available
ON: SDI 2 input available and selected as primary input
4.5 Output Video Format
The settings of the DX-2200 and the video source connected to SDI input 1 (SDI-1) determine the output
video format. The output video has three Modes of operation:
Output Mode 1: The output video format is the same as the SDI Input 1 format.
Output Mode 2: The output video format (resolution and frame rate) is set to a specific format that
was set by a SERIAL Control command.
Output Mode 3: The output video format is the same as the SDI Input 1 format and the clock
frequency is locked to the source frequency.
4.5.1 Video Output Modes 1 & 3
The default output video format is Mode 1 in which the SDI output is the same format as on SDI input 1. The
mode can be changed by a SERIAL control command. Refer to Output Format SERIAL Command Codes
(See Table 22) for details of the commands used to change the output video modes.
When operating in Output Mode 1 or Mode 3 (assuming the SDI-1 video source is recognized as one of the
supported video formats) the DX-2200 will reconfigure itself to match the output video to the detected input
format. Reconfiguration of the output video format momentarily stops video output. When no video is
connected to SDI input 1, or if the format is not recognized, the unit will continue to operate without changing
the output video format.
4.5.2 Video Output Mode 2
When operating in Video Output Mode 2, the output video resolution and frame rate is determined
exclusively by the setting programmed into the DX-2200 by a SERIAL Control command. See commands
listed in Table 22.