AJA® and Because it matters.® are registered trademarks of AJA Video Systems, Inc. for use with
most AJA products. AJA™ is a trademark of AJA Video Systems, Inc. for use with recorder, router,
software and camera products. Because it matters.™ is a trademark of AJA Video Systems, Inc. for
use with camera products.
CION®, Corvid Ultra®, lo®, Ki Pro®, KONA®, KUMO®, ROI® and T-Tap® are registered trademarks of AJA
Video Systems, Inc.
AJA Control Room™, FiDO™, KiStor™, Science of the Beautiful™, TruScale™, TruZoom™, V2Analog™
and V2Digital™ are trademarks of AJA Video Systems, Inc.
AirPort, Apple, Apple logo, AppleShare, AppleTalk, FireWire, iPod, iPod touch, Mac, Macintosh and
ProRes, are registered trademarks of Apple Inc. Final Cut Pro, QuickTime and QuickTime logo are
trademarks of Apple Inc.
Avid, Avid DNxHD and Media Composer are registered trademarks of Avid Technology, Inc.
Adobe is a registered trademark of Adobe Systems Incorporated in the United States and/or other
countries.
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered
trademarks of HDMI Licensing, LLC.
DVI is a registered trademark of DDWG.
TASCAM is a registered trademark of TEAC Corporation.
Dolby and the double-D Dolby logo are registered trademarks of Dolby Laboratories Licensing
Corporation.
All other trademarks are the property of their respective holders.
When calling for support, have all information at hand prior to calling. To contact AJA for
sales or support, use any of the following methods:
ROI Series Mini-Converter v1.2r1www.aja.com
3
Chapter 1: Introduction
Overview
Audio HandlingAnalog audio from the host can be input via a standard 3.5mm audio cable and mapped
Control InterfaceFor control, the ROI is connected to a computer via USB. The ROI has no local, physical
AJA’s ROI (region of interest) scaling converters can be used out-of-the-box to convert
either HDMI, DisplayPort (DP), or DVI input signals (depending on model) to SDI output.
The three models available are ROI-HDMI, ROI-DP, and ROI-DVI. In default mode, each ROI
converter automatically detects the input signal format and converts it to the SDI output
video format. In this startup Auto mode, the full-size input is output to the SDI output.
The picture’s aspect ratio is maintained and if the SDI monitor is larger than the input
signal, unused area is filled with matte color. Default audio setup passes 8-channels of
embedded audio (if present).
To realize the full power of ROI, however, you will use the supplied USB cable and AJA’s
Mini-Config application to select SDI output format and perform a host of region-ofinterest and output display scaling operations.
to the embedded SDI output stream. Alternatively, if the input is HDMI or DP, its
embedded audio can be the audio input. The ROI-DVI model can receive both DVI and
HDMI protocol input, and accepts audio if it is embedded in an HDMI signal. However,
the DVI protocol does not carry audio, so if the ROI-DVI is receiving DVI input, only analog
audio can be embedded to the output.
user-interface (no dipswitch settings). The ROI can operate stand-alone without a USB
connection to the host. In this mode, the ROI automatically adapts to the input signal,
and operates according to defaults or as last configured via the AJA Mini-Config
application (see
“Operation” on page 12).
HDCP ProtectionThe ROI honors HDCP, and will not allow an HDCP link. If the input content is HDCP
protected, no source video will be displayed on the ROI’s DVI pass-through connector, or
on the ROI’s SDI output.
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Features
ROI-HDMI• Convert HDMI input to 3G, HD, or SD-SDI output
ROI-DP• Convert DisplayPort input to 3G, HD, or SD-SDI output
ROI-DVI• Convert DVI input to 3G, HD, or SD-SDI output
All ROI Models• User-adjustable “region of interest”
• 4:3/16:9 conversion modes supported
• Setup via PC/Mac using Mini-Config software with the USB port and supplied USB cable
• Frame-rate conversion
• Automatic configuration to input video raster and frame rate
• SDI output configurable to most common SD and HD formats (1080p60 max)
• Edge filtering control
• Rotation, Horizontal and Vertical flip controls
• Frame delay control
• Genlock and frame sync with reference input
• Adjustable Horizontal and Vertical video delay from sync input
• Audio input via 3.5mm 2-channel analog input or 8-channel embedded (if present)
• Embedded SDI audio out (up to 8 channels)
• Uses universal input +5V power supply AJA model DWP-U-R1 (included)
•5-year warranty
NOTE: Pixel rates are limited by to a 165MHz maximum rate.
Pixel Clock RateSome sources can generate pixel clock rates that exceed the capabilities of the ROI
converter. The pixel clock is a combination of the video resolution and its vertical rate. It
may not be obvious what the resulting pixel clock will be for a particular resolution or
vertical rate.
Exceeds Max Rate
Notification
If the incoming video’s pixel clock rate is too high, the ROI converter will generate a full
screen red matte on the SDI output to indicate this error condition. Mini-Config will also
display an “exceeds max rate” error message. A downstream HDMI/DP/DVI monitor will
still display the incoming video, however.
When a downstream sink device is connected to the ROI output monitor connector, the
source and sink could potentially negotiate a display format (using EDID) that is beyond
the capability of ROI’s video processing circuity, resulting in the red matte SDI output.
Possible solutions include:
• Disconnect the downstream device (for example, a computer monitor) from the ROI.
Once disconnected, ROI will negotiate directly with the source to generate a video
resolution that it within the ROI’s processing capability. With this solution, the
downstream device will lose its signal, but the SDI output will work as expected.
• Reconfigure the source signal to a different resolution or scan rate. An alternative
setting may permit both valid SDI output and the signal displaying on a downstream
monitor.
• On ROI-DP models, use the EDID Flow Through control (see page 25).
ROI Series Mini-Converter v1.2r1www.aja.com
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Reference
Input
Mini
Audio
Jack
USB
Port
Input
Pass-Thru Path
Free Run
Audio Delay
Audio ADC
USB Cong
Control
8 CH
SRC
InterlacerFRC/Genlock
Keyer
ROI Scaler
SDI Output
HDMI/DP/DVI
Output
HDMI/DP/DVI
Input
Input
Connector
ROI Model
Input and Output
Connectors:
Deinterlacer
Sync Stripper
Embedder
Matte Gen
ROI-DVI
DVI
Connectors
ROI-DP
DisplayPort
Connectors
ROI-HDMI
HDMI
Connectors
Output
Connector
HDMI
Output
Connector
Reference
Input BNC
SDI Output
BNC
HDMI Input
Connector
Analog 2-Channel
Audio Input
Power LED
USB Port
DC Power
Input
Mini-Config
Overview
Using AJA’s Mini-Config application, you can set up and control region-of-interest and
output display scaling operations, route audio, and configure genlock. Mini-Config is also
used to update the Mini-Converter firmware.
Simplified Block Diagram
Figure 1. ROI Converter/Scaler, Simplified Block Diagram
I/O Connections
ROI-HDMIFigure 2. ROI-HDMI Converter/Scaler
6
HDMI Input:Connects to your computer or single-link source device.
ROI Series Mini-Converter v1.2r1www.aja.com
DisplayPort
Output
Connector
Reference
Input BNC
SDI Output
BNC
DisplayPort
Input
Connector
DC Power
Input
Analog 2-Channel
Audio Input
Power LED
USB Port
To connect a DVI video input to the ROI HDMI input connector, use a passive DVI-toHDMI adapter (user-supplied). You can also use a cable adapter that has a DVI connector
on one end of the cable and an HDMI connector on the other.
HDMI Output:This is a pass-through output for use on a second computer monitor for using the AJA
Screen Picker feature (described on
DVI/HDMI input above.
ROI-DPFigure 3. ROI-DP Converter/Scaler
page 19). Connections are the same as described for
DisplayPort Input:Connects to your Computer or single-link source device.
DisplayPort Output:This is a pass-through output for use on a second computer monitor for using Screen
Picker. Connections are the same as described for DisplayPort input above.
ROI Series Mini-Converter v1.2r1www.aja.com
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DVI
Output
Connector
Reference
Input BNC
SDI Output
BNC
DVI Input
Connector
DC Power
Input
Analog 2-Channel
Audio Input
Power LED
USB Port
ROI-DVIFigure 4. ROI-DVI Converter/Scaler
Typical ROI Configurations
DVI Input:Connects to your Computer or single-link source device.
To connect an HDMI video input to the ROI DVI input connector, use a passive HDMI-toDVI adapter (user-supplied). You can also use a cable adapter that has an HDMI
connector on one end of the cable and a DVI connector on the other.
DVI Output:This is a pass-through output for use on a second computer monitor for using Screen
Picker. Connections are the same as described for DVI/HDMI input above.
All ROI Models
Analog Audio:A single 3.5 mm analog audio connector accepts two channels of analog audio which
can be embedded into the SDI output as determined by the audio configuration set
using Mini-Config.
USB Port:Accepts USB mini connector
SDI Video Output:Standard BNC connector for coaxial SDI monitor connection.
Reference Video Input:The Reference BNC accepts an Output timing reference signal. The reference can be SD
Blackburst or HD tri-level sync.
Two typical configurations for using the ROI for scaling of desktop region-of-interest
computer sourced video are illustrated in the following figures. In these configurations,
the pass-through monitor is used to view the subject desktop video and use the MiniConfig application’s Screen Picker function to select the desired region for output to SDI
(see
“Screen Picker Operation” on page 19).
ROI Series Mini-Converter v1.2r1www.aja.com
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ROI
HDMI/DP/DVIHDMI/DP/DVI
USB
SDI Output
Source Computer
w/ Mini-Cong
Video
Monitor
Computer Desktop
Monitor
(ROI Pass-through)
ROI
USB
SDI Output
Source Computer
Towe r
w/ Mini-Cong
Video
Monitor
Computer
2nd Desktop
Monitor
(ROI Pass-through)
Computer Desktop
Monitor
Monitor 2 Out
Monitor 1 Out
HDMI/DP/DVIHDMI/DP/DVI
HDMI/DP/DVI
Figure 5. ROI with Laptop Computer, System Interconnect Diagram
Figure 6. ROI with Tower Computer & Two Monitors, System Interconnect Diagram
ROI Series Mini-Converter v1.2r1www.aja.com
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ROI A
HDMI
USB
SDI Output
SDI Output
ROI B
Source Computer
with Mini-Cong
Monitor 2 Out
Monitor 1 Out
Portrait
SDI Monitors
Built Into Set
Computer Monitor
RegionARegion
B
Region
B
Region
A
ROI Pass-through
- Input ROI Selection: 9x16 Fixed Aspect
- Output ROI Out Scaling: Full Screen Rotated 90 Degrees
ROI
HDMIHDMI
USB
SDI
Output
Computer
w/ Mini-Cong
Video Switcher
Digital Video
Camera
Computer Desktop
Monitor
(ROI Pass-through)
A third example illustrates use of the ROI Rotation feature to send selected areas of a
computer graphic to portrait mounted on-set monitors at full resolution. Each monitor
uses one ROI converter, accomplishing the task at a much lower cost than dedicating DVE
channels for rotation and resizing. This wiring example will work provided the HDMI
cables are short. An HDMI splitter/amplifier can be used if the ROIs need to be located
farther away from the computer (
Figure 7).
Figure 7. ROI Rotation with Portrait Mounted On-Set Monitors
ROI Series Mini-Converter v1.2r1www.aja.com
A fourth example below illustrates sending HDMI digital video from a camera to a ROI to
allow region of interest video input to a video switcher. The Screen Picker feature cannot
be used in this configuration (
Figure 8. ROI with Video Camera to Switcher Interconnect Diagram
Figure 8).
10
Installation
Typically, ROI installation consists of the following steps:
1. Ensure the ROI is disconnected from power.
2. Connect your computer or video console monitor output to the ROI’s HDMI/DVI/DP
input connector.
3. Connect the ROI’s HDMI/DVI/DP output connector to a second computer monitor
(optional).
4. Connect video monitor to the converter SDI output BNC.
5. Connect two-channel analog audio input to analog audio connector (optional)
6. Apply power to the converter (AJA power supply included).
7. The converter will now run using the default factory settings. If you wish to alter the
factory settings, you’ll need to:
• Install the AJA Mini-Config software onto your computer.
• Attach the converter via USB cable (included).
• Make your changes using Mini-Config setup screens.
ROI Series Mini-Converter v1.2r1www.aja.com
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Chapter 2: Operation
IMPORTANT: Once the ROI has been configured with Mini-Config, those settings will continue to be
used in stand-alone mode (disconnected from USB) as long as the input format remains
the same. If a different input format is connected, the ROI will revert to Auto mode.
However, if the original input format is re-connected, the ROI will exit Auto mode and
restore the previously configured settings for that format.
USB Control and Setup—Using AJA Mini-Config
Your AJA Mini-Converter can be used right out of the box for some applications since it is
designed to recognize inputs and perform standard actions automatically by default.
However, to use its full capability, you must use AJA’s Mini-Config software application
for PCs and Macs. This same application can be used to update to new Mini-Converter
software released by AJA.
Acquiring MiniConfig
Mini-Converter
Documentation
AJA’s Mini-Config application is available for download from the AJA website.
To download the latest Mini-Config package, which includes the Mini-Config application,
Mini-Converter firmware, and documentation, go to:
Select either the Windows or Mac icon to download the desired version.
Included with the Mini-Config package is a complete set of documentation for all MiniConverters supported by Mini-Config. A .PDF of the Installation and Operation Guide for
the currently connected Mini-Converter can be accessed from the Mini-Config UI via the
Help/Manual drop-down menu.
Documentation for all AJA Mini-Converters that use Mini-Config can also be accessed
directly in the Mini-Config download package Documentation folder, and via the
Documentation icon available on the Mac installer.
Documentation (and firmware) included with the Mini-Config application are the
versions available at the time of distribution. However, Mini-Converter software,
firmware and documentation are updated regularly, so newer versions may exist.
To download the latest documentation for an individual Mini-Converter, go to:
https://www.aja.com/en/category/mini-converters
and navigate to the Support webpage of that Mini-Converter.
Installing MiniConfig
PC InstallationTo install Mini-Config on a Windows PC:
1. Download the application from the AJA website (select the Windows icon on the
Mini-Config Support webpage).
2. Open the AJA_MiniConfig.zip file
3. Double-click on the MiniInstaller.msi file.
ROI Series Mini-Converter v1.2r1www.aja.com
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4. A Setup Wizard will guide you through the installation.
Figure 9. Mini-Config PC Setup Wizard
5. Click Next to begin. Answer the questions in the subsequent dialogues. When
finished, an AJA Mini-Config shortcut will be installed on the desktop, and you will be
able to locate the Mini-Config application in the AJA folder in the Programs listing.
NOTE: If the Mini-Config application already exists on the PC, a different Setup Wizard appears.