AJA 4K2HD Original operating instructions

Mini-Converter
4K2HD
Installation & Operation Guide
Version 1.0
Published: September 13, 2013

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Table of Contents
Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Contacting Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4K2HD Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Default Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Video Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
HDMI and SDI Output Control Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
MiniConfig Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
MiniConfig Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
I/O Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 2: Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
USB Control and Setup—Using AJA MiniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installing MiniConfig on a Mac. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installing MiniConfig on a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Running MiniConfig. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Operating MiniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Tabbed Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Input Tab Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Input Video Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Output Tab Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Output Video Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
HDMI Tab Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Audio Tab Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Audio Selections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Update Tab Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Software Update Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Info Tab Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Supported Video Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Video Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Video Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Audio Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Appendix B: Safety and Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Federal Communications Commission (FCC) Compliance Notices . . . . . . . . . . . . . . . . . . 21
Class B Interference Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
FCC Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Canadian ICES Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
European Union and European Free Trade Association (EFTA)
Regulatory Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Korea KCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Taiwan Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Japanese Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Translated Warning and Caution Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Before Operation Please Read These Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

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Notices
Trademarks
AJA®, KONA®, Ki Pro®, KUMO® and XENA® are registered trademarks of AJA Video, Inc.,
Ki Pro Mini™, Io Express™, Io HD™, Io™ and “Work. Flow.” are trademarks of AJA Video, Inc.
AirPort, Apple, the Apple logo, AppleShare, AppleTalk, FireWire, iPod, iPod Touch, Mac,
and Macintosh are registered trademarks of Apple Computer, Inc. Final Cut Pro,
QuickTime and the QuickTime Logo are trademarks of Apple Computer, Inc. Avid, Avid
Media Composer and Avid DNxHD are trademarks of Avid Technology, Inc. All other
trademarks are the property of their respective holders.
Copyright
Copyright © 2013 AJA Video, Inc. All rights reserved. All information in this manual is
subject to change without notice. No part of the document may be reproduced or
transmitted in any form, or by any means, electronic or mechanical, including
photocopying or recording, without the express written permission of AJA Inc.
Contacting Support
When calling for support, have all information at hand prior to calling.
To contact AJA Video for sales or support, use any of the following methods:
Telephone: [phone] or +1.530.271.3190
Web: http://www.aja.com
Support Email: [email protected]
Sales Email: [email protected]

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Chapter 1: Introduction
Overview
AJA's 4K2HD downconverts professional SDI 4K/UHD signals to HD resolution using AJA's
high-quality scaling for cost-effective monitoring and conversion. 4K2HD’s HD-SDI and
HDMI outputs are both live all the time, producing fantastic-looking HD images for on set
monitoring or direct-to-air broadcast. 4K2HD supports high frame rate (HFR) 4K inputs at
50 and 60fps and converts the HD output to 50 and 60fps for accurate viewing. 4K2HD's
configuration options can extract an HD resolution image from the 4K input to provide a
one-to-one pixel image for 4K focus checks on HD displays. Configuration can be set
remotely via AJA MiniConfig software control over USB.
4K2HD Operating
Modes
4K2HD has three working modes: 4K Down-Conversion mode, Non-4K mode, and Center
Cut mode. The first two modes are selected automatically depending on the input video.
These modes can also be manually set using the MiniConfig application.
•4K Down Conversion mode: If the format of the input video is detected as 4K format,
or the unit is configured by MiniConfig, 4K input video is down-scaled to 2K video and
then output on both the HDMI and the SDI outputs.
•Non-4K mode: If the format of input video is detected as non-4K video source, e.g.
720p60, or the unit is configured by MiniConfig, 4K2HD will not try to make 4K video
from four video inputs. Instead, it will output video to HDMI/SDI from the selected SDI
input.
•Center Cut mode: 4K2HDwill be in Center Cut mode if the input video is 4K format, and
the mode has been enabled through MiniConfig. In this mode the 2K center of 4K input
video will be output to the HDMI and SDI outputs. No down-scaling occurs, and the
output format is either 1920x1080 or 2048x1080 (depending the input source and the
2K cropping configuration).

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Default Operation The 4K2HD auto configures to the connected inputs. The auto-configure function
identifies the connected inputs and generates the default outputs for the given input.
Default operation can be overridden and set manually using AJA’s MiniConfig
application.
NOTE: Signal conversion requires the presence of a valid SDI video signal on the SDI IN 1 BNC.
For single SD or HD inputs, BNC input 1 is the default input. For dual-link 1.5Gb HD
inputs, and 4K dual-stream 3Gb SDI inputs, inputs 1 and 2 are default. Where applicable,
both level A and B 3Gb inputs are auto-detected and supported.
When connecting the 4K2HD with multiple SDI inputs in the auto-configure mode
(default), as the user connects the first HD-SDI to input 1, the unit will output that input
as a full screen HD. As soon as the second input is connected, the unit will know that
either QuadHD or 4K x 2160 is present and the display will change to show the two
connected quadrants in the upper left and upper right of the output. The remaining two
quadrants will be displayed as they are connected.
It is possible to use two dual stream 3G inputs to make 3840 or 4K video. In this case SDI1
and SDI2 are assumed to be the inputs: SDI1 linkA makes the top left quadrant, SDI1 linkB
makes the top right quadrant, SDI2 linkA makes the lower left quadrant, and SDI2 linkB
makes the lower right quadrant. To use this mode change the Video Source Selection to
'2 X SDI 4K'.
Video Output 4K2HD has two output connectors, HDMI and SDI, that are both active simultaneously.
For 4096x2160 inputs, the 4K2HD will output 2048x1080 if 2K crop option is turned off
(through MiniConfig), otherwise 4096x2160 inputs will be scaled to 2048x1080, then
cropped to 1920x1080. 4K2HD will not scale 4096 to 1920 pixels.
The HDMI and SDI output connectors will generally be the same video, with the
exception of non-4K PsF video input.
SDI passthrough is enabled by default if the input video is 2K/HD PsF. In this case, SDI
output is PsF format, and HDMI output is progressive format. The HDMI output is delayed
one frame, compared to the SDI output. The SDI passthrough can be disabled by
MiniConfig. If disabled, the SDI output will be progressive format, the same as HDMI
output, with no frame delay.
HDMI and SDI Output
Control Differences
Some video output control options are only applicable to HDMI output, such as color
range, sample structure or HDMI/DVI standard. Some options are only applicable to SDI
output, such as Level B control, or PsF passthrough. And some output control options are
applied to both, such as Center Cut.
MiniConfig Control Configuration set via MiniConfig is stored in the 4K2HD unit through subsequent power
cycles.
MiniConfig Control
Functions
Input Video Selections: • Video Source (Auto, 4xSDI 4K, 2xSDI 4K, 2xSDI HD-DL, SDI 1-4)
• Color Space (Auto, 422 YCbCr, 444 RGB, or 444 YCbCr)
• RGB Range (SMPTE or Full color range).
• Bit Depth (Auto, 8-bit, or 10-bit)

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•VideoFormat(Auto,Progressive, Interlaced, or PsF).
• 3G-B Mode (Auto, Dual Link, 2xHD, 1 x HD DS1, 1 x HD DS2)
Output Video Selections: • 4K Convert (Downconvert, Center Cut)
• 2K Crop (On or Off)
• SDI Out (Passthrough or Processed)
HDMI Output: • Color Space (Auto, 4:2:2 YCbCr , 4:4:4 RGB, 4:4:4 YCbCr
• Bit Depth (Auto, 8-bit, or 10-bit)
• RGB Range (Auto, SMPTE or Full)
• Color Dithering (Off or On)
• HDMI/DVI (Auto, HDMI, or DVI)
Audio: • Input Source (Ch 1-8 or Ch 9-16 from any SDI input)
• HDMI Channel Count (Auto, 2, 8)
•AudioOffsetInFrames
Features
• 4K (4096x2160) and UltraHD (3840x2160) support (see "Appendix A: Specifications on
page 19" for a complete list of supported inputs)
• Down-conversion to support 4K on HD-SDI and HDMI devices
• Simultaneous HD-SDI and HDMI output
• True 4K downscaled and cropped for HD output
• Center cut of original 4K frame supported for focus checks
• Supports 4K/UHD 50/60fps high frame rate input formats
• Configurable via AJA MiniConfig software for Mac and PC
• DWP-U-R1 Power Supply Included
•5-yearwarranty
NOTE: 3D is not supported in this converter.
NOTE: 720p 4:4:4 formats are not supported in this release.

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Block Diagram
Figure 1. 4K2HD Converter, Simplified Block Diagram
I/O Connections
Figure 2. 4K2HD Converter Connection
NOTE: LEDs adjacent to each SDI input connector indicate by color the detected signal type. Green is
SD-SDI, red is HD-SDI, and amber/orange is 3G-SDI.
USB Bus
(connect to
PC or Mac)
Control 12C to HDMI XMIT and
EDID Readback
SDI In 1
SDI Out
with Embedded
Audio
SDI In 2
Reclock
Reclock
Reclock
Reclock
SDI
RCVR
SDI
RCVR
SDI
RCVR
SDI
RCVR HDMI
XMIT
SDI
XMIT
SDI In 3
SDI In 4
Video
Video
Processing
Audio
Processing Audio
HDMI Output
with Embedded
Audio
USB
Port
HDMI
Output
SDI
Output
SDI Inputs 1 - 4
with signal LEDs
DC
Power
Input
Power
LED

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Installation
Typically, 4K2HD installation consists of the following steps:
1. Ensure the 4K2HD is disconnected from power.
2. Connect video equipment to the converter BNCs and HDMI connector.
3. Apply power to the converter (AJA power supply included).
4. The 4K2HD will now run using the default factory settings. If you wish to alter the
factory settings, you’ll need to:
• Install the AJA MiniConfig software on your computer.
• Attach the 4K2HD via USB.
• Make your changes using MiniConfig setup screens.
This process is detailed in “USB Control and Setup—Using AJA MiniConfig” on page 10.

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Chapter 2: Operation
USB Control and Setup—Using AJA MiniConfig
The 4K2HD can usually be used right out of the box for most applications since it is
designed to recognize inputs and perform standard actions automatically by default.
However you can also manually configure the 4K2HD using a supplied software
application for PCs and Macs called “MiniConfig.” This same application can be used to
update Mini-Converter firmware released by AJA.
Installing
MiniConfig on a Mac
To install the application on a Mac, insert the CD supplied with the
Mini-Converter into the computer, drag the “AJA MiniConfig”
application for your platform (Mac or PC) to your desktop or an
applications folder.
NOTE: Macintosh computers must be Intel-based (G5, G4 and earlier models will not work with
MiniConfig).
Installing
MiniConfig on a PC
To install the application on a Windows PC, insert the CD supplied with the Mini-
Converter into the computer, locate the “MiniInstaller” application, and then double-
click it.
Figure 3. MiniConfig Setup Wizard on PC
A Setup Wizard will guide you through the installation. Just click Next to begin.
Answer all questions in the subsequent dialogues; when done, you will be able to locate
the MiniConfig application in the AJA folder in the Programs listing.
Running MiniConfig Connect the Mini-Converter to the PC or Mac via the supplied USB cable. Connect the
external power supply (supplied) to the Mini-Converter.

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NOTE: On a Mac, when the Mini-Converter is connected to the USB port, you may see an alert like
that shown following. If you do, press Cancel—this alert can be ignored.
Figure 4. Mac Network Message (ignore)
PC Startup: To run MiniConfig on a PC, find the AJA MiniConfig in the program list and locate the AJA
MiniConfig application.
Figure 5. PC MiniConfig Startup
Mac Startup: To run MiniConfig on a Mac, double-click the Applications folder and locate the AJA
MiniConfig application. Double-click the application to launch it.
Saving Setups: A File menu at the top of the MiniConfig application menu bar allows you to Save the
state of the Mini-Converter, with your current settings, to a file for later recall. This allows
you to set up the converter for different applications, storing each (with Save) to a unique
name for easy recall—using the Open menu item. A Revert to Factory Settings menu item
similarly allows you to change the settings back to AJA’s factory defaults. An Edit menu
allows you to cut and paste values to/from fields, just as in other applications.
Operating
MiniConfig
The MiniConfig application provides a graphic interface for viewing settings and
updating software. It consists of an information area at the top that shows the available
Mini-Converters attached to the computer via USB, with a graphical rendering of the
selected Mini-Converter showing all the connectors and their current state.
Colored text next to the connectors indicates the signal type and what the Mini-
Converter is doing:
•Blue text indicates the values automatically selected
•Black text indicates values that you have manually selected
•Red text indicates the Mini-Converter is not detecting a signal or cannot negotiate with
the attached device
NOTE: Even if no output device is detected, it still shows the signal it is outputting.
NOTE: Configuration settings in red will change based on the attached output device as well as input
signals. For improved accuracy and reliability, you should configure the Mini-Converter only
when the target output device is attached and input signals are supplied at the inputs.
Screens are virtually the same on both PC and Mac, with subtle differences that reflect
the general look of the platform environment.

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Running Multiple Mini-
Converters:
MiniConfig can manage multiple AJA Mini-Converters connected via USB—even when
they are of differing types. However it only connects to one at a time. You can choose
which Mini-Converter you wish to control using the pulldown menu in the upper right
hand corner. If you want to configure and update multiple Mini-Converters in parallel,
you can do it by running multiple instances of the MiniConfig application and have each
control a different Mini-Converter.
Figure 6. MiniConfig, Video Screen
Selecting a Mini-Converter with the dropdown menu causes this application to connect
to the selected converter. The graphic of Mini-Converter and text below it provides:
• Type of converter
• Firmware version
• Serial number of the unit
A status field at the bottom of the screen shows if your application is connected and
communicating with the Mini-Converter.
When configuring the Mini-Converter, select it from the top pulldown, view the current
settings and change any values. Making a change communicates that new value to the
Mini-Converter’s non-volatile memory.
Tabbed Screens The Tabs delineate control screens with groups of controls for each type of task to be
performed. The controls for the actual configuration parameters are specific to each
Mini-Converter type. With your Mini-Converter connected and selected, click on any of
the tab buttons and the screen below will change to match.
Any parameter changes you make are immediately implemented and are saved,
overwriting previous settings.
Tabbed
screens
Message
showing
status
Firmware
version
and serial
number
Each connector is labeled with
the signals currently detected:
Blue = Auto
Black = Manual selection
Red = No signal or output
because device not
detected.
Select a USB
port and an
attached
Mini-Converter
(name in
parentheses)

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Input Tab Screen Click on the Input tab to view and make changes to the converter’s input settings.
Figure 7. MiniConfig, Input Tab Screen
Input Video Selections
Video Source: Selects the input video format. Choose from the following:
• Auto - automatically selects the format based on the input video parameters.
• 4xSDI 4K - (frame rates greater than 30 not supported)
• 2xSDI 4K - (3G-B Dual Stream input required, frame rates greater than 30 not
supported)
• 2xSDI HD-DL - (2 wire SMTPE 374, frame rates greater than 30 not supported)
• SDI 1, SDI 2, SDI 3, or SDI 4
NOTE: One of the 4 incoming quadrants of 4K video can be shown full screen on the HDMI/SDI
outputs. This is accomplished by selecting one of the 4 SDI inputs, but requires that all 4 SDI
inputs are connected.
Color Space: Selects the Input Video Color Space. Choose Auto, 422 YCbCr, 444 RGB, or 444 YCbCr.
Choosing “Auto” will automatically select color mode based on the input video
parameters and the payload ID.
RGB Range: Selects the Input Video Color Range. Choose SMPTE (default) or Full color range. There is
no auto detection for color range.
Bit Depth: Selects the input video bit depth. Choose Auto, 8-bit, 10-bit, or 12-bit. Choosing “Auto”
automatically selects the bit depth based on the input video parameters and the payload
ID.

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Video Format: Selects the Input Video Format. Choose from Auto, Progressive, Interlaced, or PsF
(progressive segmented frame). Choosing “Auto” automatically selects the format based
on the input video parameters and the payload ID.
3G-B Mode: Selects the 3G level B Video Mode. Choose from the following:
• Auto - automatically selects the format based on the input video parameters.
• Dual Link - select this when the input is Dual Link., your 3G signal is carrying 444
information, or the input is 1080p50/59.94.
• 2xHD - Dual Stream - each Data Stream is an independent source.
• 1 x HD DS1 - use only Data Stream 1 as a single video.
• 1 x HD DS2 - use only Data Stream 2 as a single video.
Output Tab Screen Click on the Output tab to view and make changes to the 4K2HD Output settings. These
settings can affect both the HDMI and SDI outputs.
Figure 8. MiniConfig, Output Tab Screen
Output Video
Selections
Output Mode
4K Convert: • Downconvert - Downconverts incoming 4K signal to HD (default setting).
• Center Cut - Selects the center portion of the incoming 4K signal for display. No down-
scaling occurs, and the output format is either 1920x1080 or 2048x1080 (depending
the input source and the 2K Crop setting.

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2K Crop: Choose On or Off. Provides the option of center cutting 2Kx1080 video signals to make
1920x1080., or center cutting a 4Kx2160 signal to make 1920x1080. Default is On.
SDI Out
Passthrough: Choose Auto, Off, or On (default is Auto). This setting can be used with HD or 2K psf
format input signals. When On, psf format will passthrough to the SDI output instead of
the converted, progressive format signal.
3Gb Mode: Choose Auto, 3G-A, or 3G-B (default is Auto).
HDMI Tab Screen Click on the HDMI tab to view and make changes to the 4K2HD HDMI output settings.
Figure 9. MiniConfig, HDMI Tab Screen
Color Space: Selects the desired output video format. Choose from the following:
• Auto - selects the video format based on the input video and the attached device's
capabilities (default setting).
• 4:2:2 YCbCr (cannot exceed 10-bit depth)
• 4:4:4 RGB
• 4:4:4 YCbCr
Bit Depth: Choose from Auto, 8-bit, or 10-bit (see limitations above). Choosing “Auto” automatically
selects the bit depth based on the input video and the attached device's capabilities.
RGB Range: Choose Auto, SMPTE or Full. Choosing “Auto” automatically selects the input color range
setting.
Color Dithering: Choose Off or On. Default is Off.

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HDMI/DVI: Choose Auto, HDMI, or DVI. When DVI is selected, any audio signals present are not
passed. Choosing “Auto” automatically selects the output mode based on the attached
device's capabilities. Default is Auto.
Audio Tab Screen Click on the Audio tab to view and make changes to the 4K2HD audio settings.
Figure 10. MiniConfig, Audio Tab Screen
Audio Selections
Input Source: Choose which embedded audio channels are routed to the HDMI output. Eight channels
are routed at a time. You can choose Ch 1-8 or Ch 9-16 from any SDI input.
HDMI Channel Count: Choose Auto, 2 of 8 channels or 8-channels embedded audio. Choosing “Auto”
automatically selects the audio channels based on the attached device's capabilities.
The SDI output embedded audio always follows the selected HDMI Output source
selection and is limited to 8 channels max.
Audio Offset In Frames: Permits time shifting the embedded audio in relationship to the video (for example, to
correct for lip sync problems), in 1/16 of a frame increments. Range is from -0.8125 video
frame to +7.0 video frames. The actual time duration of delay will vary depending on the
frame rate of the format being converted.
Default offset value is 0 frame to match the video delay path, resulting in time-aligned
audio on the output. Positive offset delays the audio additional frames (relative to the
video output), negative offset advances the audio relative to the video output.

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Update Tab Screen Use this Update screen to view the software version currently installed on the converter
or install new software.
Figure 11. MiniConfig, Update Screen
NOTE: When discussing Mini-Converters, “Firmware” is software that will be stored in the Mini-
Converter’s non-volatile memory and used when it is powered up. This is something different
than the MiniConfig application software. The version numbers shown in the Update screen
refer only to the firmware.
The following fields and control are present in this screen:
Installed: This field shows the version of the firmware currently installed inside the Mini-Converter.
Desired: This field shows the version of firmware embedded in the MiniConfig application which
you can install into the Mini-Converter by clicking the Update button.
Update: This button initiates a software update operation loading the “Desired” version of
firmware into the Mini-Converter’s non-volatile memory.
Progress: This indicator bar shows the progress of software being installed.
Software Update
Procedure
1. Check the AJA website for new MiniConfig software for your Mini-Converter. If new
software is found, download it, uncompress the file archive (zip), and install the
MiniConfig software on your Mac or PC.
2. Connect the Mini-Converter to a Mac or PC via a USB port on the computer and run
the new MiniConfig software just downloaded.
3. Click on the Update tab screen.
4. Check the Installed version level against the Desired version level. If the Desired is
newer, then click the Update button to download the new firmware to the Mini-

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Converter; progress will be shown via the “Progress” thermometer bar. When you
click Update, MiniConfig will provide a dialog asking you to confirm that you really
want to update the firmware (see Figure 12).
Figure 12. Firmware Update Confirmation
Info Tab Screen This screen provides basic information about the Mini-Converter. This information is
mostly useful when calling AJA Support for service or technical support.
Figure 13. MiniConfig, Info Screen
Name: This field allows you to give your Mini-Converter a name. This may be useful if you have
several Mini-Converters attached to a Mac/PC via USB so you can distinguish one of them
easily (especially if they’re the same model).
Type: This is the factory set model name of the Mini-Converter (4K2HD).
Assembly: This is the factory assembly number.
Serial Number: This is the factory set unique serial number of your 4K2HD. If you ever call AJA Support
for service, you may be asked for this number.

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Appendix A: Specifications
Supported Video Formats
•SD/HD
•8,10bit
•4K
• 8, 10 bit for 4:2:2 video
• 8 bit for 4:4:4 video (10 bit 4:4:4 video will be rounded into 8bit)
Unsupported Formats • 3D not supported.
• XYZ color space is not supported.
Video Input 4K, 3G, HD, and SD-SDI (auto-selected), 4x BNC
4K Inputs Supported
4 x 1.5Gb SDI: • 4 x 1920x1080 p, 4:2:2, 23.98, 24, 25, 29.97, 30
• 4 x 1920x1080 psf, 4:2:2, 23.98, 24, 25, 29.97, 30
• 4 x 2048x1080 p, 4:2:2, 23.98, 24
• 4 x 2048x1080 psf, 4:2:2, 23.98, 24
2 x dual-stream 3Gb SDI
(level B):
• 2 x 2 x 1920x1080 p, 4:2:2, 23.98, 24, 25, 29.97, 30
• 2 x 2 x 1920x1080 psf, 4:2:2, 23.98, 24, 25, 29.97, 30
• 2 x 2 x 2048x1080 p, 4:2:2, 23.98, 24
• 2 x 2 x 2048x1080 psf, 4:2:2, 23.98, 24
4 x 3Gb SDI: • 4 x 1920x1080 p, 4:2:2, 50, 59.94, 60
• 4 x 1920x1080 p, 4:4:4, 23.98, 24, 25, 29.97, 30
• 4 x 1920x1080 psf, 4:4:4, 23.98, 24, 25, 29.97, 30
• 4 x 2048x1080 p, 4:4:4, 23.98, 24
• 4 x 2048x1080 psf, 4:4:4, 23.98, 24
HD Inputs Supported • 1280x720 p 4:2:2 50, 59.94, 60
• 1280x720 p 4:2:2 25, 29.97, 30
• 1920x1080 i 4:2:2 25, 29.97, 30
• 1920x1080 p 4:2:2 23.98, 24, 25, 29.97, 30
• 1920x1080 psf 4:2:2 23.98, 24, 25, 29.97, 30
• 2048x1080 p 4:2:2 23.98, 24
• 2048x1080 psf 4:2:2 23.98, 24

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3G Inputs Supported • 1920x1080 i 4:4:4, 25, 29.97, 30
• 1920x1080 p 4:4:4, 25, 29.97, 30
• 1920x1080 psf 4:4:4, 23.98, 24, 25, 29.97, 30
• 2048x1080 p 4:4:4, 23.98, 24
• 2048x1080 psf 4:4:4, 23.98, 24
• 1920x1080 p 4:2:2, 50, 59.94, 60
SD Inputs Supported •525i
•625i
Video Output • HDMI v1.4a, 30/36 bits per pixel, RGB or YUV, HDMI Standard Type A connector
NOTE: If a connected monitor doesn’t support HDMI protocol the unit automatically switches to
DVI protocol (which does not pass audio).
• HD/3G-SDI, BNC
Audio Formats
Audio Inputs SDI embedded audio, 24-bit, 8-channel
Audio Outputs • HDMI embedded audio, 24-bit, 8-channel
• SDI embedded audio, 24-bit, 8-channel
Physical
Power +5-20 VDC Regulated, 8 Watts, Power Supply Required (included with purchase)
Size 5.8” x 3.9” x 0.8” (147 mm x 99 mm x 20 mm) including connectors