MICROTRONIX DX-2200 User manual

4056 Meadowbrook Drive, Unit 126
London, ON Canada N6L 1E3
www.microtronix.com
MICROTRONIX
DX-2200
SD/HD-SDI TEXT &GRAPHIC INSERTER
USER MANUAL –VERSION 1.75

DX-2200 SD/HD-SDI
Text & Graphics Inserter
User Manual
Page 2 of 103
Document Revision History
This User Manual provides operating instructions and information on the following Microtronix products:
•DX-2200 –SD/HD-SDI Text & Graphic Inserter with Loop Output, (Model PN: DX-2200-TI-14) and
•DX-2200 –SD/HD-SDI Text & Graphic Inserter with PIP & Loop Output, (Model PN: DX-2200-TI-24.
The following table shows the document revision history.
Date
Rev.
Description
Jan 30, 2014
1.00
Initial release
Mar 10, 2014
1.10
Changed the Text Overlay to support both text and graphics
Added two additional overlay layers
Added L commands for enhanced layer control
Added G commands to control graphics layers
Added capability to update device firmware through RS232 port.
Remove S0, S1, ST commands. Use L1D, L1E, L1V commands instead.
Added more S commands to support same functions as the G commands
Jun 10, 2014
1.20
Added the capability to receive an RGB image with transparency uploaded over
RS232, store images in flash memory, and display them on the overlay.
Fix a problem that caused graphics to be skewed for some overlay sizes.
July 21, 2014
1.21
Add wingdings font table
Oct 16, 2014
1.23
Add 13 extended UTF8 characters to the Tahoma fonts
Nov14, 2014
1.31
Fonts and images are loaded on first use to make the DX-2200 start faster
Added graphic field type 6 –rectangle specified by top/left and width/height
Enhanced the Layer commands to specify more than one layer
Increase number of graphic/text fields per layer to 48
Add commands MA0, MA1 to control ancillary data pass through
Add commands to restrict rectangle fill width to a set width around the interior
Add L1A and L1H commands to disable unused layers
Enhance GnnX, GnnY to accept one or two parameters
Add MB command to change baud rate
Add support for Rev E PCB.
Dec 15, 2014
1.32
Add information on the image transparency and background color/transparency
Fix an image background color problem.
Fix a range check problem with the L commands
Add illegal code remapping
Jun 03, 2015
1.40
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.

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Update drawing showing new enclosure with SD/HD-SDI Loop Output port
Jun 15, 2015
1.42
Add Tahoma 48 pixel font and Bitstream Vera Sans Mono
Oct 20, 2015
1.50
Add Mode 2 that uses the second input connector as a dedicated PiP input
Dec. 14, 2015
1.51
Update pictures of enclosure.
Feb. 26, 2016
1.60
Add mode 3, text inserter with scaling and associated ZS and B commands.
Add ZP commands for text inserter with PiP (mode 2).
Mar 07, 2016
1.61
Add font 44, Vera Sans Mono Bold, 256 pixel height.
Nov 17, 2016
1.62
Add Commands RI1, RI2, RS1, RS2 for reporting input video resolution
Jan 17, 2016
1.65
Change factory default settings for the DIP switch.
Add PiP position presets P5, P6, P7, P8
Add U2 command
Fix a problem with SD video support
Correct a problem with the TD command
July 19, 2017
1.67
Add an additional arrow character to the Wingding fonts at code 005F
Aug 23, 2017
1.68
Added configuration bypass function
Nov 13, 2017
1.70
Modified the configuration bypass function to also bypass loading of images from
flash memory.
Improve handling of corrupted images in the flash memory.
Fix a bug in the frame counter when using 1000/1001 frame rates
Add a time clock mode to the frame counter display
Add support for capture of NMEA 0183 GPS data from the DB9 serial port and
insertion of selected parameters into text fields for display on the overlay.
Feb. 6, 2018
1.71
Added section outlining Serial Port Communication
Added section numbering to document layout
Mar. 21, 2018
1.75
Updated 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 su[email protected] 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 SD/HD-SDI Text & Graphic Inserter 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............................................................................................................................. 10
1.1 Supported Functionality................................................................................................................... 10
1.2 Product Package Contents.............................................................................................................. 11
2Introduction............................................................................................................................................. 12
2.1 Text and Graphics Overlay OSD Features...................................................................................... 12
3Hardware ................................................................................................................................................ 13
3.1 Power Requirements....................................................................................................................... 14
3.1.1 AC Power Adapter.................................................................................................................... 14
3.1.2 Example of 14.4VDC Lithium Battery....................................................................................... 14
3.2 Operating Limits............................................................................................................................... 15
4Operation................................................................................................................................................ 16
4.1 Default Startup Configuration .......................................................................................................... 16
4.2 LED Status Indicators...................................................................................................................... 16
4.3 Video Format................................................................................................................................... 18
4.4 Picture-in-Picture (PiP).................................................................................................................... 18
4.5 Video Buffering and Frame Delay ................................................................................................... 18
4.6 Audio and Ancillary Data ................................................................................................................. 18
4.7 OSD Layers..................................................................................................................................... 18
4.8 SERIAL & MANUAL Control............................................................................................................ 19
4.8.1 SERIAL Mode of Operation...................................................................................................... 19
4.8.1.1 USB 2.0 to RS-232 Serial Port Adapter............................................................................ 19
4.8.1.2 DX-2200 Serial Port Control Commands.......................................................................... 20
4.8.1.3 Input Video Transparency SERIAL Command ................................................................. 20
4.8.1.4 Mode Control SERIAL Command..................................................................................... 21
4.8.1.5 Ancillary Data SERIAL Commands................................................................................... 21
4.8.1.6 Baud Rate SERIAL Command.......................................................................................... 21
4.8.1.7 Picture-in-Picture Position, Size, and Zoom SERIAL Commands.................................... 22
4.8.1.8 Main Input Scaling and Position SERIAL Commands...................................................... 25
4.8.1.9 Graphic Overlay SERIAL Commands............................................................................... 27
4.8.1.9.1 Active Layer................................................................................................................... 27
4.8.1.9.2 Graphic Fields ............................................................................................................... 27
4.8.1.9.3 Reset Graphic Field....................................................................................................... 28
4.8.1.9.4 Graphic Field Visibility................................................................................................... 28
4.8.1.9.5 Update Graphic Overlay................................................................................................ 29
4.8.1.9.6 Coordinate System and Field Position.......................................................................... 29
4.8.1.9.7 Line Color and Transparency........................................................................................ 30
4.8.1.9.8 Background Color And Transparency........................................................................... 30
4.8.1.9.9 Text Font........................................................................................................................ 31
4.8.1.9.10 Graphic Field Type...................................................................................................... 33
4.8.1.9.10.1 Text Fields –Field Type 1 ......................................................................................33
4.8.1.9.10.2 Text Field Display Example: ...................................................................................34
4.8.1.9.10.3 Rectangle Fields –Field Type 2.............................................................................34
4.8.1.9.10.4 Rectangle Field Display Example:..........................................................................35
4.8.1.9.10.5 Corner Marker Fields –Field Type 3......................................................................35
4.8.1.9.10.6 Target Marker Fields –Field Type 4.......................................................................36
4.8.1.9.10.7 Image Fields –Field Type 5 ...................................................................................36
4.8.1.9.10.8 Rectangle XYWH –Field Type 6............................................................................37
4.8.1.9.11 Low Level Graphic Commands ................................................................................... 43
4.8.1.9.11.1 Application Example 1 ............................................................................................44
4.8.1.9.11.2 Application Example 2 ............................................................................................44
4.8.1.10 Graphic Layer 1 Overlay SERIAL Commands.................................................................. 45
4.8.1.10.1 Sample Graphic Layer 1 Overlay Commands............................................................. 45

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4.8.1.10.1.1 Graphic Layer 1 Overlay Commands Example 1: ..................................................45
4.8.1.10.1.2 Graphic Layer 1 Overlay Commands Example 2: ..................................................46
4.8.1.11 Frame Counter Overlay SERIAL Commands................................................................... 52
4.8.1.11.1 Frame Counter Display Mode ..................................................................................... 52
4.8.1.11.1.1 Frame Counter Mode 0...........................................................................................52
4.8.1.11.1.2 Frame Counter More 1............................................................................................52
4.8.1.11.1.3 Frame Counter Modes 2 –4...................................................................................53
4.8.1.11.1.4 Frame Counter Modes 5 –8...................................................................................53
4.8.1.11.2 Frame Count Value ..................................................................................................... 53
4.8.1.11.3 Frame Counter Appearance........................................................................................ 53
4.8.1.11.4 Manual Mode............................................................................................................... 54
4.8.1.11.5 Sample Frame Counter Commands............................................................................ 54
4.8.1.11.5.1 Frame Counter Example 1:.....................................................................................54
4.8.1.11.5.2 Frame Counter Example 2:.....................................................................................54
4.8.1.11.5.3 Frame Counter Example 3:.....................................................................................55
4.8.1.12 Layer Control SERIAL Commands................................................................................... 58
4.8.1.12.1 Low Level Buffer Control............................................................................................. 58
4.8.1.12.2 Visibility of Layers........................................................................................................ 58
4.8.1.12.3 Enabling and Disabling Layers.................................................................................... 59
4.8.1.12.4 Re-Sizing Overlays...................................................................................................... 59
4.8.1.12.5 Moving An Overlay...................................................................................................... 59
4.8.1.13 User Interface Commands................................................................................................ 61
4.8.1.13.1 DIP Switch Assignments ............................................................................................. 61
4.8.1.13.2 Toggle Switch Assignments ........................................................................................ 61
4.8.1.13.3 User Interface Function Configuration......................................................................... 61
4.8.1.13.3.1 User Interface Commands......................................................................................62
4.8.1.13.4 Resetting to Factory Default Configuration ................................................................. 62
4.8.1.13.5 Recommendations for Configuration........................................................................... 62
4.8.1.13.6 Example Configuration Command File........................................................................ 63
4.8.1.14 GPS Receiver Support...................................................................................................... 64
4.8.1.14.1 Connection of the GPS Receiver ................................................................................ 64
4.8.1.14.2 GPS Data Capture....................................................................................................... 66
4.8.1.14.3 Selection of Data Fields –the ‘CC’ command............................................................. 70
4.8.1.14.4 GPS Interface Setup Commands................................................................................ 72
4.8.1.14.4.1 GPS Data Display Example:...................................................................................74
4.8.1.14.4.2 Example with the Frame Counter Time Clock set by the GPS:..............................76
4.8.1.15 Configuration Flash Serial Commands............................................................................. 77
4.8.1.16 Other Serial Command Codes.......................................................................................... 78
4.8.1.16.1 Serial Port Reset Serial Command ............................................................................. 78
4.8.2 MANUAL Mode of Operation.................................................................................................... 79
4.8.2.1 Toggle Switch.................................................................................................................... 79
4.8.2.2 Bypass Saved Configuration Using Toggle Switch........................................................... 79
4.8.2.3 DIP Switch Settings........................................................................................................... 79
5DX2200 Software Upload Utility ............................................................................................................. 81
5.1 Firmware Update Procedure ........................................................................................................... 81
5.2 Uploading Images............................................................................................................................ 81
6Text Writing Performance Measurements.............................................................................................. 82
6.1 Standard Text String Update Benchmark Measurements............................................................... 82
6.2 Low Level Text String Update Benchmark Measurements............................................................. 83
7Extended Fonts Tables........................................................................................................................... 84
7.1 Wingdings Fonts.............................................................................................................................. 84
7.2 Extended ASCII Fonts..................................................................................................................... 85
8Product Warranty.................................................................................................................................... 86
8.1 Hardware Warranty.......................................................................................................................... 86
8.2 Firmware Warranty.......................................................................................................................... 86
8.2.1 Limited Liability......................................................................................................................... 86

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Appendix A: Internal Circuit Board Description......................................................................................... 88
A.1 SDI Video Interfaces........................................................................................................................ 88
A.2 RS-232 Serial Control Port.............................................................................................................. 88
A.2.1 RS-232 3-Pin Header, J2......................................................................................................... 89
A.3 Power Requirements....................................................................................................................... 89
A.3.1 Power Connectors.................................................................................................................... 89
A.4 JTAG Header................................................................................................................................... 89
A.4.1 JTAG Firmware Upload Procedure.......................................................................................... 90
A.5 Reset Pushbutton SW1 ................................................................................................................... 90
A.6 Board Mechanical Dimensions........................................................................................................ 90
Appendix B: USB to RS-232 Serial Port Adapter...................................................................................... 93
B.1 ICUSB232V2 Software Drivers........................................................................................................ 93
B.1.1 Installation of ICUSB232V2 Serial Driver and Terminal Emulator Program ............................ 93
B.2 Establishing Serial Communications............................................................................................... 94
Appendix C: Regulatory Compliance Information ..................................................................................... 98
C.1 Industry Canada (IC) ....................................................................................................................... 98
C.2 Federal Communications Commission (FCC) Declaration of Conformity....................................... 98
C.3 CE Declaration of Conformity.......................................................................................................... 99

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Listing of Tables
Table 1: Default DIP Switch Settings 16
Table 2: Description of LED Status Indicators 17
Table 3: Serial Port Command Acknowledgement Codes 20
Table 4: Transparency SERIAL Command Codes 20
Table 5: Mode Control SERIAL Command Codes 21
Table 6: PiP Control Serial Command Codes 23
Table 7: Output Window Size and Position SERIAL Command Codes 26
Table 8: Text Inserter with Scaling Zoom SERIAL Command Codes 26
Table 9: Text and Symbol Fonts 31
Table 10: Graphic Overlay SERIAL Commands 38
Table 11: Low Level Graphic Overlay Commands 43
Table 12: Graphic Layer 1 Overlay SERIAL Commands 47
Table 13: Graphic Layer 1 Low Level Overlay Commands 52
Table 14: Frame Counter Overlay SERIAL Command Codes 56
Table 15: Layer Control SERIAL Command Codes 59
Table 16: User Interface Command Codes 62
Table 17: DB9 Serial Y Splitter Cable Pin Connections 65
Table 18: GPS Data Fields 66
Table 19: Data Formatting for the ‘CC’ Command 70
Table 20: GPS Interface Setup Command 72
Table 21: Flash Serial Command Codes 77
Table 22: Other Serial Command Codes 78
Table 23: Operation of 2-Position Momentary Toggle Switch 79
Table 24: Operation of the 4-Position DIP Switch 79
Table 25: Update Rate for Standard Text String Commands 82
Table 26: Update Rate for Low Level String Commands 83
Table 27: Windings Character Table 84
Table 28: Extended ASCII Character Table 85
Table 29: RS-232 Serial Port DB9 Pin Assignments 89
Table 30: RS-232 3-Pin Header, J2 89

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List of Figures
Figure 1: DX-2200-TI-14 –SD/HD-SDI Text & Graphics Inserter with SDI Loop Output 13
Figure 2: DX-2200-TI-24 –SD/HD-SDI Text & Graphics Inserter with PIP and SDI Loop Output 13
Figure 3: 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 6: SDI Outputs & Status LEDs 16
Figure 7: SDI Input & Status LEDs 17
Figure 8: SDI Inputs & Status LEDs (PIP product model) 17
Figure 9: DX-2200-TI Layer Order 19
Figure 10: Sample of PiP, text and graphic logo OSD 24
Figure 11: Sample of active text and graphic logo 29
Figure 12: Sample of transparent text and background 30
Figure 13: Sample of the available Tahoma font sizes 32
Figure 14: Character set - codes 20-7F and A0-FF 33
Figure 15: Sample of Rectangle, Target Marker and Text 37
Figure 16: Sample of Corner Markers, Target and Text 38
Figure 17: Example 1 –red text OSD with white background 46
Figure 18: Example 2 –sample of default text 47
Figure 19: Frame Counter text display –Example 2 55
Figure 20: Frame Counter text display –Example 3 55
Figure 21: DB9 Serial Y Splitter Cable (Part # W6001) 65
Figure 22: Connection of Garmin GPS18xLVC 66
Figure 23: Example of GPS Data Display 76
Figure 24: Example of Frame Counter Time Clock Set by the GPS 77
Figure 25: DX-2200-TI –HD-SDI Text & Graphics Inserter Board 88
Figure 26: JTAG Cable Connection 90
Figure 27: DX-2200 Board (PN: P4115-TI-24) Mechanical Drawing 91
Figure 28: USB to DB9 RS-232 Serial Port Adapter Kit 93
Figure 29: PuTTY Session User Settings 95
Figure 30: PuTTY Terminal Settings 95
Figure 31: PuTTY Serial Port Settings 96

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1 Key Product Features
The key hardware features of the base DX-2200 –SD/HD-SDI Text & Graphics Inserter with Loop Output
(Model PN: DX-2200-TI-14) product includes:
•One 75Ω SD/HD-SDI input port
•Two 75Ω SD/HD-SDI output ports
•One for overlay output
•One for loop-though output
•One DB9 RS-232 Serial Control Port
The DX-2200 –Text & Graphic Inserter with PIP & Loop Output, (Model PN: DX-2200-TI-24) product
variant has an additional 75ΩSD/HD-SDI input port.
1.1 Supported Functionality
•Video Input formats:
oNTSC @ 29.97 fps (frames per second)
oPAL @ 25 fps
o720p @ 25 / 29.97 / 30 / 50 / 59.94 / 60 fps
o1080i @ 25 / 29.97 / 30 fps
o1080p @ 23.98 / 24 / 25 / 29.97 / 30 fps
o1080psf @ 23.98 / 24 / 25 / 29.97 / 30 fps
•Video Output automatically adjusts to match the input video format
•Ancillary data from the video input is preserved to provide pass-through of audio, closed captions and
other metadata on the main SDI input
•Text and Graphics Overlay OSD:
•Three overlay layers
•Up to 48 independent text or graphic Fields per layer
•Fields support text, rectangle, corner markers, target marker, and graphic images.
•Filled or open rectangles
•Size, color, transparency and position control
•Configurable background color for text
•Alpha blended text and background
•Alpha blending of graphic components
•Frame Counter text overlay display
•Three modes of operation:
oMode 1 = Text Inserter,
oMode 2 = Text Inserter with PiP using SDI Input 2 as PiP source*,
oMode 3 = Text Inserter with Scaling
•Output video clock frequency locked to input
•Low video frame delay
•User defined operation of DIP & Toggle switches
•Flash storage of user configuration and text fields for auto system recovery after power-off
•2MB of flash for storage of graphic images
•Firmware update over RS232 Serial Port

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1.2 Product Package Contents
The SD/HD-SDI Text & Graphics Inserter product package includes the following items:
•SD/HD-SDI Text & Graphics Inserter with Loop Output, Model PN: DX-2200-TI-14, or
•SD/HD-SDI Text & Graphics Inserter with PIP and Loop Output, Model PN: DX-2200-TI-24,
•100-240VAC –12VDC, 1.3A Power Adapter, PN: 589-PS-1213AP,
•USB 2.0 to RS-232 DB9 Serial Adapter Kit, PN: 8121-USB-RS232-KIT,
•User Manual on CD

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2 Introduction
The Microtronix DX-2200 –SD/HD-SDI Text & Graphics Inserter is a high performance single input video
text and graphics inserter supporting alpha blended text and graphics overlay / on screen display (OSD) on
progressive, psf and interlaced SD and HD video formats. With support for embedded audio, VBI content
and metadata, it is designed for use in broadcast, professional video recording studios, high-end
surveillance applications and Point-of-Sale security systems requiring live insertion of high quality text
streams onto a SDI video signal.
The unit auto detects the format of the input video and outputs in the same format. Custom user
configurations and parameters can be stored in on-board flash for auto restoration during power ON/OFF
cycles. A fail-safe buffered SD/HD-SDI Loop Output is available for passing through the input signal
unmodified as may be required for broadcast applications.
2.1 Text and Graphics Overlay OSD Features
Features of the overlay OSD include:
1) Three layers for text and graphics fields
2) Display of 48 independent fields per layer
3) Fields support Text, Rectangles, Corner Markers, Target Marker and Image modes
4) Text Field of up to 195 characters
5) Alpha blending of the text for smooth edges
6) Frame Counter on the top overlay layer
7) Independent color selection of fields
8) Configurable background color of text fields
9) Transparency control
10) Independent ON/OFF control of fields
11) X-Y position control
12) Permanent retention of text fields in flash memory
13) PIP of auxiliary SD/HD-SDI input (product variant option)
The text and graphics are supplied to the DX-2200-TI 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.

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3 Hardware
The SD/HD-SDI Text & Graphics Inserter is available as a stand-alone product supplied in an enclosure as
show in Figure 1 and Figure 2 below, or optionally as an open-frame board (for building into embedded
video system) as shown in Figure 25 shown in Appendix A.
Figure 1: DX-2200-TI-14 –SD/HD-SDI Text & Graphics Inserter with SDI Loop Output
Figure 2: DX-2200-TI-24 –SD/HD-SDI Text & Graphics Inserter with PIP and SDI Loop Output

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3.1 Power Requirements
The DX-2200-TI 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-TI 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.
Figure 3: 12Vdc 1.33A 100-240VAC Power Adapter
Figure 4: 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 5: 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 Default Startup Configuration
The factory default configuration for the DX-2200-TI has no saved configuration in flash and the following
DIP switch settings:
Table 1: Default DIP Switch Settings
DIP Switch
Setting
1
Off
2
Off
3
Off
4
Off
When powered up in the factory default configuration, the unit will pass the input video through to the output
with no text overlay items added. The DX-2200-TI will automatically output in the same video format as is
detected at the input.
If there is no input signal (or if it cannot be properly detected), the SDI output will display black and the video
format will be 720p @ 60 fps.
A user specific setup can be stored in flash to enable the DX-2200-TI to start in a different configuration, for
example with a text overlay displayed.
4.2 LED Status Indicators
The location of the 5 LEDs is show in the following figures.
Figure 6: SDI Outputs & Status LEDs

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Figure 7: SDI Input & Status LEDs
Figure 8: SDI Inputs & Status LEDs (PIP product model)
The operation of the status LEDs is summarized in Table 2 below.
Table 2: Description of LED Status Indicators
LED
Color
Use
Mode of Operation
Input-Top
(Board D4)
Red
Interlaced /
PsF Video
Detected
OFF: The SDI input video is a progressive video format.
ON: The SDI input video is either an interlaced or PsF video
format.
Input-
Bottom
(Board D4)
Red
Valid
Video
OFF: The SDI input has either no video, or an unsupported video
format.
ON: A signal is detected on the input.
Output
(Board D4)
Green
Power
ON: Power OK
Output-Top
(Board D5)
Red
Output On
OFF: SDI output is not enabled.
ON: The SDI output is enabled.
Output-
Bottom
(Board D5)
Red
Clock
Frequency
Lock
OFF: The output video clock is free running.
ON: The output video clock is frequency locked to the input video
clock.

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4.3 Video Format
The default video format is 720p @ 60 fps. If no input signal is connected at power-up (when operating in the
factory default configuration) the DX-2200-TI will output a black screen. The Text Overlay can be used
without input video connected.
When an SDI input with one of the supported video formats is connected, the unit will detect the video format
and switch the output to the match the detected video and attempt to lock to the clock frequency of the video
input. The video output will momentarily switch off as the video output is adjusted to match the format and
clock frequency of the input. When the clock frequency is locked, the video path is enabled and the input
video and ancillary data will appear at the output.
If the SDI input is disconnected, the unit continues to output in the last video format that was detected.
The default output video format can be changed by saving the configuration when the unit is operating with
the desired output format.
4.4 Picture-in-Picture (PiP)
Units equipped with the optional second SDI input connector (Input 2) are capable of PiP display using the
second SDI Input as the PiP source. The PiP video source can be asynchronous to the main video input or
can be a different resolution / frame rate. If the main input is an interlaced format, the PiP input must be
interlaced, and if the main input is a progressive format, the PiP input must be progressive. The size and
position of the PiP is programmable by software commands.
The PiP input will only function after the background video has been connected to Input 1. The PiP input
does not support audio or other ancillary data types. For interlaced formats, connection of a signal to the PiP
input may create an output video glitch as the unit synchronizes to the input.
4.5 Video Buffering and Frame Delay
For Text Inserter Mode (Mode 1) and Text Inserter with PiP (Mode 2), the DX-2200-TI includes a frame
buffer with a delay of 1 frame. The main video path has an additional delay of approximately 2000 clocks
(about 1 line in 1920x1080 video resolutions). The optional PiP video path has an additional delay that may
vary from 0 to 1 frame due to its support for asynchronous video inputs.
For Text Inserter with Scaling Mode (Mode 3), the DX-2200-TI has 2 frames of delay plus an additional delay
of approximately 4 lines.
4.6 Audio and Ancillary Data
The DX-2200-TI preserves ancillary data in the main SDI Input (Input 1) and passes it through to the output
to provide pass-through of audio, closed captions, and other ancillary data types embedded in the SDI video.
The optional PiP SDI Input (Input 2) does not support audio or other ancillary data types.
4.7 OSD Layers
The DX-2200-TI supports three video layers that are mixed on top of the SDI video input(s).

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Figure 9: DX-2200-TI Layer Order
The top layer in the mix is referred to as Graphics Text Layer 1.This layer displays up to 48 Fields that
support text and graphics. The optional Frame Counter displays on this layer. Text Fields on this layer are
configured using either the Text Overlay Serial Commands or the Graphics Overlay Serial Commands. The
Frame Counter is configured by the Frame Counter Serial Commands.
The next two layers are Graphics Layer 2 and Graphics Layer 3. These layers each display up to 48 display
Graphic Fields that are controlled by the Graphic Overlay Serial Commands.
The 4th layer is the SDI video, and the 5th layer is the Black Background.
Within any one layer, no mixing of fields takes place. If two fields have pixels that occupy the same
coordinates, one will overwrite the other. When an update is performed to render the fields on a layer, the
fields are rendered in order of their field number. For example, Field 4 will always be rendered after Field 3
and will overwrite any pixels of Field 3 if they are in the same location in the frame.
When graphic fields on different layers are placed at the same coordinates, they mix according to their
transparencies and the layer order. When a field is fully visible, no content that is on the layers below it will
be visible. When the field is partly or fully transparent, it mixes with the layers below according to their
transparencies.
4.8 SERIAL & MANUAL Control
The SD/HD-SDI Video Text Inserter has two methods of control: SERIAL Control using the RS232 port, and
MANUAL Control using the DIP switch and Toggle switch. SERIAL Control allows control full of the
capabilities of the DX-2200-TI, and MANUAL Control provides a subset of functions.
SERIAL Control is always active. In the factory default configuration the Toggle Switch and DIP switch are
active.
The functions of the DIP switch and Toggle switch can be reconfigured by SERIAL Control commands to
customize the Switcher so that the controls provide the set of functions required for a specific user
application. The modified configuration can be saved on board in the flash configuration memory.
4.8.1 SERIAL Mode of Operation
When SERIAL control is used, the DX-2200-TI is controlled via commands sent to the DB9 Serial Control
Port.
The serial COM port of the computer connected to the DX-2200-TI should be configured for: 115,200 baud,
1 stop bit, and no flow control.
4.8.1.1 USB 2.0 to RS-232 Serial Port Adapter
The DX-2200 product is supplied with a USB 2.0 to DB9 RS-232 Serial Port Adapter Kit (PN: 811-USB-
RS232 Kit) to connect the DB9F Serial Port to a USB 2.0 port of a PC or laptop. The Kit consists of a USB

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2.0 to RS232 DB9 Serial Adapter Cable (StarTech PN: ICUSB232V2) and a 6 foot male to female DB9
RS232 serial cable. Refer to Appendix B for more information.
4.8.1.2 DX-2200 Serial Port Control Commands
In the SERIAL mode, commands sent to the Serial Control Port control the operation of the DX-2200-TI.
Commands consist of ASCII alpha-numeric codes and are not case sensitive. All Serial Commands are
terminated with a carriage return (CR), a line feed (LF), or a semicolon. The use of a semicolon terminator
allows more than 1 command per line to improve readability of script files.
Commands may be sent directly to the DX-2200-TI one character at a time using a terminal program running
on a connected computer, or they may be developed in a text editor such as Notepad and then uploaded to
the DX-2200-TI by the terminal program. The second method has the advantage of allowing the commands
to be saved, viewed, edited and resent. The text editor used must save the configuration files as 8 bit ASCII
data.
Space or tab characters before a command or trailing a command are ignored, as are spaces or tabs
following a comma that separates parameters within a command. Any characters on a line following a tick (')
character are treated as comments. A comment may begin after a delimiter, or may follow a command with
or without spaces or tabs between the command and the comment.
ASCII string parameters are delimited with quotation marks. If a quotation mark or backslash character is
required within a string (for example to display as part of a text overlay), then it must be preceded by a
backslash character.
Valid and invalid Serial Commands are acknowledged with a ‘+’ and ‘-’ response respectively. Carriage
return, line feed, or semicolon characters without a preceding command are acknowledged with a ‘*’.
The command codes are extensible, additional commands and functionality can be added as required.
Contact Microtronix sales or technical support with your requirements.
Table 3: Serial Port Command Acknowledgement Codes
Response Code
Mode of Operation
+
Valid command received
-
Invalid command received
*
Valid CR, LF, semicolon, or comment line received
4.8.1.3 Input Video Transparency SERIAL Command
The Input Video Transparency Commands set the transparency of the input 1 SDI video. By default the, the
SDI input video has no transparency. By using these commands, the input video can be made partially
transparent so that the black background layer becomes visible.
Table 4: Transparency SERIAL Command Codes
Command Code
Mode of Operation
An –Set transparency of the SDI input 1 video
A0
0% transparency
A1
12.5% transparency
A2
25% transparency
A3
37.5% transparency