DDC BU-67121W User manual

Avionics Interface Computer
Test & Development Platform
Hardware Manual
© 2015 Data Device Corporation. All trademarks are the property of their respective owners.
Intel, the Intel logo, the Intel Inside logo and Intel Atom are trademarks of Intel Corporation in the U.S. and/or other countries
Models: BU-67121W
For more information: www.ddc-web.com/BU-67121W
Applications
•Systems Integration Labs
•Simulators
•Production Test Stands
•System Troubleshooting
•Software Development
•Data Recording
DDC’s Avionics Interface Computer (AIC) provides a scalable, programmable, and portable platform to develop
and test MIL-STD-1553 and ARINC 429 system applications via an Ethernet network... eliminating the need and cost
of long cabling/wire runs from the test lab to the onboard 1553/429 interfaces under test.
Need a Custom Solution? DDC can customize designs for all
controllers, ranging from simple modifications of standard
products to fully customized solutions for commercial, military,
aerospace, and industrial applications.
A
CE TREME
MIL-STD-1553
ARINC 429
DISCRETE
ETHERNET
ARINC 717

DDC's Data Networking Solutions
MIL-STD-1553 | ARINC 429 | Fibre Channel | Ethernet
As the leading global supplier of data bus components, cards, and software solutions for the military, civil, and
aerospace markets, DDC’s data bus networking solutions encompass the full range of data interface protocols to
support the real-time processing demands of field-critical data networking between systems and subsystems on
military vehicles. These products, along with our traditional MIL-STD-1553 solutions, represent a wide and flexible array
of performance and cost solutions, enabling DDC to support multi-generational programs.
Whether employed in increased bandwidth, high-speed serial communications, or traditional avionics and ground
support applications, DDC's data solutions fulfill the expanse of military requirements including reliability, determinism,
low CPU utilization, real-time performance, and ruggedness within harsh environments. Our use of in-house intellectual
property ensures superior multi-generational support, independent of the life cycles of civil devices. Moreover, we
maintain software compatibility between product generations to protect our customers' investments in software
development, system testing, and end-product qualification.
DDC provides an assortment of quality MIL-STD-1553 rugged embedded and lab grade cards and components to
meet your data conversion and data interface needs. Our 1553 data bus board solutions are integral elements of
military, aerospace, and industrial applications. Our extensive line of military and space grade components provide
MIL-STD-1553 interface solutions for microprocessors, PCI buses, and simple systems. Our 1553 data bus solutions are
designed into a global array of aircraft, helicopter, unmanned vehicles, and missile programs.
DDC also has a wide assortment of quality ARINC 429 embedded and lab grade cards and components, which will
meet your data conversion and data interface needs. DDC's ARINC 429 components ensure the accurate and
reliable transfer of flight-critical data. Our 429 interfaces support data bus development, validation, and the transfer
of flight-critical data aboard civil aerospace platforms.
MIL-STD-1553
ARINC 429
Form Factors, Software, & Drivers
DDC supplies MIL-STD-1553 and ARINC 429 board level products in a variety of form factors including USB, PCI-Express,
PCMCIA, ExpressCard, AMC, PMC, XMC, PCI-104, PC/104-Plus, PC/104, PCI, cPCI, VME, and ISAbus boards. Our laboratory
simulation and in-flight products include multi-function and single-function for system integration and production test environments.
Our extensive line of military and space grade components provide MIL-STD-1553 interface solutions for microprocessors and
simple systems. Our software is supplied in the form of menus, libraries, and drivers. We also offer additional software to expand
our data networking range of options.
DDC offers a wide variety of solutions based on extensions of MIL-STD-1553 for emerging aerospace applications. Turbo
1553 increases the data rate of 1553 from 1 Mbps to 5 Mbps while maintaining the architectural features of
MIL-STD-1553. Hyper 1553 provides high speed communication (50 to 100+ Mbps) over MIL-STD-1553 buses while
operating concurrently with legacy 1 Mbps 1553 (similar to ADSL for telephone networks).
Extensions to MIL-STD-1553
DDC offers a convenient solution to convert MIL-STD-1553, ARINC 429, and Ethernet protocol in any direction, in
real-time, without a host computer.
Ethernet
DDC has developed its line of high-speed Fibre Channel network access controllers and switches to support the real-
time processing demands of field-critical data networking between sensors, computer nodes, data storage, displays,
and weapons, for air, sea, and ground military vehicles. Fibre Channel's architecture is optimized to meet the
performance,reliability, and demanding environmental requirements of embedded, real time, military applications,
and designed to endure the multi-decade life cycle demands of military/aerospace programs.
Fibre Channel

DATA DEVICE CORPORATION
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
i
BU-67121W
AVIONICS INTERFACE COMPUTER
HARDWARE MANUAL
MN-67121W-001
The information provided in this Manual is believed to be accurate; however, no
responsibility is assumed by Data Device Corporation for its use, and no license or
rights are granted by implication or otherwise connection therewith.
Specifications are subject to change without notice.
Please visit our Web site at http://www.ddc-web.com/ for the latest information.
All rights reserved. No part of this Manual may be reproduced or transmitted in any form
or by any mean, electronic, mechanical photocopying recording, or otherwise, without
the prior written permission of Data Device Corporation.
105 Wilbur Place
Bohemia, New York 11716-2426
Tel: [phone], Fax: [phone]
World Wide Web -http://www.ddc-web.com
For Technical Support - 1-800-DDC-5757 ext. 7771
United Kingdom -Tel: [phone], Fax: [phone]
France -Tel: [phone], Fax: [phone]
Germany Tel: [phone], Fax: [phone]
Japan -Tel: [phone], Fax: [phone]
Asia -Tel: [phone] © 2014 Data Device Corp.

RECORD OF CHANGE
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
ii
Revision Date Pages Description
Pre Rev A 1/2015 All Preliminary Release
Rev A 5/2015 All Initial Release
Pre Rev B 6/2016 17 Added Section

TABLE OF CONTENTS
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
iii
1PREFACE.............................................................................................................1
1.1 Text Usage..................................................................................................................1
1.2 Standard Definitions....................................................................................................1
1.3 Special Handling and Cautions ...................................................................................1
1.4 Trademarks.................................................................................................................1
1.5 What is included in this manual?.................................................................................1
1.6 Technical Support .......................................................................................................2
2OVERVIEW ..........................................................................................................3
2.1 Features......................................................................................................................4
2.2 Top-Level Block Diagram............................................................................................5
2.3 System Requirements.................................................................................................7
2.4 Applications.................................................................................................................7
2.5 Configuration Options..................................................................................................7
2.6 Mechanical Design and Qualification Testing..............................................................7
2.7 Power Adaptor ............................................................................................................9
2.8 Specifications............................................................................................................10
3MODES AND OPERATION................................................................................12
3.1 Standalone Mode......................................................................................................12
3.2 Remote Access Mode...............................................................................................12
3.3 Protocol Conversion Mode........................................................................................14
4START UP..........................................................................................................15
5DETAILED ARCHITECTURE.............................................................................16
5.1 USB Interfaces..........................................................................................................16
5.2 Ethernet Interfaces....................................................................................................16
5.3 VGA & Serial Interfaces ............................................................................................16
5.4 AIC Mainboard..........................................................................................................16
6HARDWARE INSTALLATION ...........................................................................17
6.1 Avionics Interface Computer Disassembly ................................................................17
6.2 AIC Main Board.........................................................................................................20
6.3 AIC Mini PCI-e Sites..................................................................................................22
6.4 AIC PMC Sites..........................................................................................................26
7SOFTWARE INSTALLATION............................................................................31
7.1 OS Restore USB Flash Drive....................................................................................31
7.2 Updating The Flash Firmware...................................................................................31
8CONNECTORS AND PINOUTS.........................................................................42
8.1 Introduction to the I/O Connectors.............................................................................42
8.2 Signal Lists................................................................................................................44

TABLE OF CONTENTS
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
iv
8.3 Connector Pinouts.....................................................................................................46
8.4 Mating Connectors....................................................................................................56
8.5 External Power Supply..............................................................................................59
9ORDERING INFORMATION ..............................................................................60

LIST OF FIGURES
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
v
Figure 1. Avionics Interface Computer Block Diagram.............................................................6
Figure 2. BU-67121Wx Avionics Interface Computer...............................................................8
Figure 3. BU-67121Wx Mechanical Outline..............................................................................9
Figure 4. Example of Avionics Interface Computer Used in Standalone Mode ......................12
Figure 5. Example of Avionics Interface Computer Used in Remote Access Mode................13
Figure 6. Example of Avionics Interface Unit Used in Protocol Conversion Mode..................14
Figure 7. Front Panel Screws.................................................................................................18
Figure 8. Rear Panel Screws..................................................................................................18
Figure 9. Disconnecting Fan Plug...........................................................................................19
Figure 10. Disconnecting Fan Plug con’t................................................................................19
Figure 11. Sliding Out Main Board..........................................................................................20
Figure 12. AIC Mainboard – Top View....................................................................................21
Figure 13. AIC Mainboard – Bottom View ..............................................................................22
Figure 14. Mini PCI-e headers PCB labels.............................................................................23
Figure 15. 20-Pin FFC............................................................................................................24
Figure 16. 24-Pin FFC............................................................................................................25
Figure 17. Telnet Login...........................................................................................................32
Figure 18. Firmware directory on AIC.....................................................................................32
Figure 19. Location path for firmware files..............................................................................33
Figure 20. DDCCM application launched ...............................................................................33
Figure 21. Selection of the device to be flashed.....................................................................34
Figure 22. Entering the firmware path and name to start flashing. .........................................35
Figure 23. Confirming to flash the firmware............................................................................35
Figure 24. Flash process started, Erasing Flash Sectors.......................................................36
Figure 25. Programming new firmware...................................................................................37
Figure 26. AIC web page Device Information.........................................................................38
Figure 27. Locate firmware file window ..................................................................................39
Figure 28. Browser page updated to ask for confirmation......................................................40
Figure 29. Erasing flash sectors.............................................................................................40
Figure 30. Programming firmware..........................................................................................41
Figure 31. BU-67121WX Front Panel Connectors..................................................................42
Figure 32. BU-67121WX Rear Panel Connectors ..................................................................43
Figure 33. AIC J1 15-Pin D-Sub Connector............................................................................46
Figure 34. AIC J2 9-Pin D-Sub Connector..............................................................................47
Figure 35. AIC J3 15-Pin D-Sub Connector............................................................................50
Figure 36. AIC J4 9-Pin D-Sub Connector..............................................................................51
Figure 37. Female RJ-45 jack for Ethernet.............................................................................53
Figure 38. USB 2.0 Type A Receptacle..................................................................................54
Figure 39. 15-Pin VGA Video Connector................................................................................55
Figure 40. 9-Pin, Male, D-Sub connector for RS-232.............................................................56
Figure 41. AIC J1 Mating Connector ......................................................................................57
Figure 42. AIC J2 Mating Connector ......................................................................................58
Figure 43. AIC J3 Mating Connector ......................................................................................58
Figure 44. AIC J4 Mating Connector ......................................................................................59

LIST OF TABLES
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
vi
Table 1. BU-67121Wx Specification Table...............................................................................10
Table 2. AIC Mainboard - Top VIew .........................................................................................21
Table 3. AIC Mainboard – Bottom View....................................................................................22
Table 4. Power ON Sequence..................................................................................................44
Table 5. Power OFF Sequence................................................................................................44
Table 6. AIC Signal List J1 – J4 & Ethernet, USB, VGA, RS-232.............................................44
Table 7. J1 15-Pin D-Sub Connector Pinout.............................................................................47
Table 8. J2 9-Pin D-Sub Connector Pinout...............................................................................47
Table 9. AIC D-Subs to 20-pin onboard header pin out............................................................48
Table 10. AIC D-Subs to 24-pin onboard header pin out..........................................................49
Table 11. J3 15-Pin D-Sub Connector Pinout...........................................................................50
Table 12. J4 9-Pin D-Sub Connector Pinout.............................................................................51
Table 13. AIC D-Subs to 20-pin onboard header pin out..........................................................51
Table 14. AIC D-Subs to 24-pin onboard header pin out..........................................................52
Table 15. 10/100/1000 Ethernet Port Pinout ............................................................................54
Table 16. USB 2.0 A Connector Pinouts ..................................................................................54
Table 17. 15-Pin VGA Connector Pinout..................................................................................55
Table 18. 9-Pin RS-232 Connector Pinout ...............................................................................56
Table 19. Mating Connectors, and Power Adapter...................................................................57

Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
1
1 PREFACE
This manual uses typographical conventions to assist the reader in understanding the
content. This section will define the text formatting used in the rest of the manual.
1.1 Text Usage
•BOLD–indicates important information and table, figure, and chapter
references.
•Courier New–indicates code examples.
•<…> - indicates user-entered text or commands.
1.2 Standard Definitions
PMC PCI Mezzanine Card
Mini PCI-e Small form factor Peripheral Component Interconnect Express
1.3 Special Handling and Cautions
The BU-67121Wx uses state-of-the-art components, and proper care should be used
to ensure that the device will not be damaged by Electrical Static Discharge (ESD),
physical shock, or improper power surges and that precautions are taken to avoid
electrocution.
It is recommended to power off the device safely by pushing the power
button. Not by pulling out the power adaptor.
Do not store disks in environments exposed to excessive heat, magnetic
fields or radiation.
1.4 Trademarks
All trademarks are the property of their respective owners.
1.5 What is included in this manual?
This manual contains a complete description of the Avionic Interface Unit’s hardware
installation and use.

PREFACE
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
2
1.6 Technical Support
In the event that problems arise beyond the scope of this manual, you can contact
DDC by the following:
US Toll Free Technical Support:
1-800-DDC-5757, ext. 7771
Outside of the US Technical Support:
1-631-567-5600, ext. 7771
Fax:
1-631-567-5758 to the attention of DATA BUS Applications
DDC Website:
www.ddc-web.com/ContactUs/TechSupport.aspx
Please note that the latest revisions of Software and Documentation are available for
download at DDC’s Web Site, www.ddc-web.com.

Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
3
2 OVERVIEW
DDC’s Avionics Interface Computer (AIC), (or as it’s known by its part number BU-
67121Wx)is a development system for lab and production test applications which
provides a scalable, programmable, and portable platform to develop and test MIL-
STD-1553 and ARINC 429 system applications via an Ethernet network. By utilizing
the Ethernet network with the AIC’s Remote Access or Protocol Conversion modes
eliminates the need and cost of long cabling/write runs from the test lab to the
onboard 1553/429 interface under test. The AIC’s use of a Linux OS provides the
ability to customize the AIC as it allows for the integration of DDC line of cards as
well as 3rd party PMC and PCIe cards.
The AIC comes with Fedora Core 20 installed on its Solid State Drive and has an
Intel®Q7 Processor and 2 GB of DDR3L SDRAM, which enables the AIC to serve a
broad range of data conversion and unique application needs. The AIC includes one
10/100/1000 Ethernet channel, two USB 2.0 ports, one RS-232 port, and one VGA
port. The AIC operates over an ambient air temperature range of 0°C to +55° C, and
includes an internal fan.
The AIC has two PMC and two mini PCIe sites providing hardware flexibility for
additional hardware components such MIL-STD-1553, ARINC 429, ARINC 717,
Avionics and Discrete I/O, AFDX and many other configurations. For other
configurations not mentioned, please see the Configuration Options or Ordering
Information sections for additional details on customizing the AIC. Please also
contact the factory with custom requirements that is not seen on the ordering
information tables.
The AIC offers a high degree of flexibility, and is therefore suitable for a wide range of
lab applications. The AIC has three modes of operation Remote Access Mode,
Protocol Conversion Mode and Stand Alone Mode.
In Protocol Conversion Mode, the AIC is configured to provide autonomous
communication from any input channel(s) to any other channel(s). To minimize setup
time and provide turnkey operation, the AIC includes a high-level protocol conversion
API. Alternatively, users may develop their own conversion applications by means of
DDC’s AceXtreme MIL-STD-1553 and/or ARINC 429 APIs, along with Linux TCP/IP
and UDP/IP socket interfaces for the AIC’s Ethernet channel.
In Remote Access Mode, users are able to develop applications running on a remote
computer communicating over Ethernet to the AIC’s MIL-STD-1553 and/or ARINC
429 channels. In the remote access configuration, the user is able to write
applications running on a remote host invoking the AceXtreme MIL-STD-1553 and/or
ARINC 429 APIs. As an alternative to developing application software, in Remote

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
4
Access Mode, the user is able to operate the AIC using any of DDC’s GUI software
programs. These include:
•BusTrACEr, a simple menu program for generating and monitoring MIL-STD-
1553 messages. Further, BusTrACEr includes an option for the automatic
generation of ANSI ‘C’ source code.
•dataSIMS, a software GUI tool for test and simulation applications. dataSIMS
converts data to engineering units, allows the creation of graphical display
formats, and may be used for either passive monitoring and/or simulation.
•LabVIEW®and LabVIEW®Real-Time Support. The BU-69093S0-XX0
software operates in conjunction with National Instruments’ LabVIEW®or
LabVIEW®Real-Time system design software to provide a simple interface
and easy programming of the AIC’s MIL-STD-1553 and/or ARINC 429
interfaces. Users can either create their own custom interfaces “from scratch”
or may modify the samples that are provided.
•Commercial Avionics Utilities Software Package. The DD-42999S0-XX0
Data Bus Analyzer and Data Loader GUI software is for ARINC 429 data
bus analysis and simulation. This GUI provides advanced filtering, message
scheduling, and triggering. In addition, it includes a graphical ARINC 615 data
loader, providing a software interface to load data to and from airborne
computers.
Standalone mode allows a user to operate the AIC as a user programmable
computer system. Software Development Kits (SDKs) are provided for MIL-STD-
1553 and ARINC 429 to facilitate the development of applications requiring
communication on these avionics I/Os. Onboard video, a Serial port and USB ports
can also be utilized to further enhance Standalone mode. The user will not need to
depend on a host PC.
2.1 Features
General
•Bridging Ethernet, MIL-STD-1553, and ARINC 429
•Development Computer
oIntel® Atom™ E3845 Quad Core 1.91GHz Processor
o2GB DDR3L SDRAM
o30 GByte SSD
o10/100/1000 Base-T Ethernet, USB 2.0, RS-232
oLinux Operating System
oLab Grade, Rack-Mountable Chassis
o2 PMC and 2 Mini-PCIe Expansion Slots

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
5
•Various PMC and Mini-PCIe Modules Support a Range of Avionics Interfaces
oMIL-STD-1553
oARINC 429
oARINC 717
oAvionics Discrete I/O
oCustom I/O
•Three Modes of Operation, Using DDC’s Hardware and Software
1. Remote Access Mode Uses Ethernet as a Virtual Backplane Between
Applications Running on a Host Computer and 1553/429 Interfaces
Located Within the AIC, Eliminating the Need and Cost of Long Cabling
to Onboard 1553/429 Connections from the Test Lab
2. Protocol Conversion Mode Uses Bridging SDK, Which Allows Userts
to Easily Create Embedded Software on the AIC that will Autonomously
Forward Data Between MIL-STD-1553, ARINC 429, and Ethernet
Interfaces
3. Standalone Mode Allows the AIC to Operate as a User Programmable
Computer System
Software
•Linux Operating System and BSP
oEthernet Stacks, with UDP/IP and TCP/IP Sockets, Telnet, FTP, TFTP,
SSH, and HCTP.
•DDC Protocol Conversion API, Providing Turnkey Conversion From Any
Ethernet, 1553, or ARINC 429 Port to Any Other Port(s)
•DDC AceXtreme MIL-STD-1553 API, Including Sample Programs
•DDC ARINC 429 API, Including Sample Programs
•Built-in Editor, Allowing Editing and Saving Files Over Telnet
•Built-in ‘C’ Compiler
•Can transfer internal files to a host computer, edit remotely, and transfer files
back to the AIC before compiling.
2.2 Top-Level Block Diagram
Figure 1 is the top-level functional block diagram of the Avionics Interface Computer
(AIC). The AIC’s CPU, an Intel E3845 Atom processor, mounted on a Qseven
Module, interfaces through three 1x PCI Express interfaces to the AIC’s other major
functional blocks for Mini PCI-e and PMC site connections.

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
6
One 1x PCIe interface services the AIC’s Mini PCI-e Site A. While a second PCIe link
interfaces the Mini PCI-e Site B. A third PCI Express interface connects between the
Qseven module and a PCI-e to PCI Bridge which then services the two PMC slots.
Other interfaces from the Qseven module include a UART for the onboard Serial port.
As well as two USB interfaces for the USB 2.0 ports. There is also the Ethernet
interface for the 10/100/1000 Ethernet channel. An onboard Solid State Disk has a
link via SATA from the Qseven module. A SPI interface will service where the BIOS
is located. Video is also available through the VGA display port.
Figure 1. Avionics Interface Computer Block Diagram

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
7
2.3 System Requirements
2.3.1 System Requirements for Protocol Conversion Mode
•Remote computer with Ethernet interface and Telnet.
2.3.2 System Requirements for Remote Access Mode
•Remote computer with Ethernet interface.
•Windows XP, Windows Vista 32/64-bit, Windows 7 32/64-bit, Windows 8
32/64-bit, Linux, or VxWorks Operating System
oWorkbench software development environment for VxWorks platforms
•An appropriate compiler or development environment.
•Contact factory for additional operating systems
2.4 Applications
The BU-67121Wx lab module is a valuable tool for design and test teams involved
with MIL-STD-1553, ARINC 429 interfaces, etc.. The Avionics Interface Computer is
the ideal solution for any application requiring an Ethernet-to-MIL-STD-1553 and/or
ARINC 429 interface in a lab or production test environment.
The design of the Avionics Interface Computer leverages the full capabilities of
DDC’s AceXtreme MIL-STD-1553 Architecture. Features include a highly
autonomous BC with expanded instruction set, an RT or Multi-RT providing a wide
variety of buffering options, a selective message monitor, IRIG-B time code input,
and a 48-bit, 100 ns resolution Time Tag. Each AceXtreme channel contains up to 1
MB of RAM.
2.5 Configuration Options
•Generic P/N: BU-67121W000R
- R = RoHS
•Mechanical/Environmental Options:
- BU-67121W000-JL0 Lab box, RoHS only.
Note: Contact the Factory for more channel configurations.
2.6 Mechanical Design and Qualification Testing
The BU-67121Wx board (Figure 2 and Figure 3) is intended for applications
operating in a lab or other commercial environment.

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
8
Front view
Rear view
Figure 2. BU-67121Wx Avionics Interface Computer

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
9
Figure 3. BU-67121Wx Mechanical Outline
2.7 Power Adaptor
The BU-67121WX Avionics Interface Computer is powered by means of a SL Power
Electronics CENB1080A2403F01 100/240 VAC-to-24 VDC (3.25 Amp) power
adaptor. This comes with separate line cords for operation in the US, UK, Europe,
and Japan. The power adaptor is included with every model of the AIC.

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
10
2.8 Specifications
Table 1. BU-67121Wx Specification Table
PARAMETER MIN TYP MAX UNITS
ABSOLUTE MAXIMUM RATINGS
AC Voltage Input 90 262 VAC
DC Power Input 18 24 33 VDC
Logic Inputs
• RS 232
Industry Standard
• VGA
• Ethernet
POWER SUPPLY REQUIREMENTS (NOTE 8)
Using External AC Power Supply
• Voltage 90
264 VAC
• Frequency 47 63 Hz
Using Direct DC Power Input
• Input Voltage
- Steady state range 22.8 25.2 V
ENVIROMENTAL CHARACTERISTICS
THERMAL
Operating Temperature
BU-67121W (ambient temperature, includes internal fan) 0 55 °C
Non-Operating Temperature
BU-67121W 0 65 °C
HUMIDITY
Operating Humidity (non-condensing)
BU-67121W 5 70 %
Non-Operating Humidity (non-condensing)
BU-67121W 5 70 %
PHYSICAL CHARACTERISTICS

OVERVIEW
Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
11
Table 1. BU-67121Wx Specification Table
PARAMETER MIN TYP MAX UNITS
Size
• BU-67121W 6.69 x 6.91 x 2.10 in.
169.9 x 175.5 x 53.3 mm.
Weight
• BU-67121WM03-JL0 43.5 (1233) oz. (g)

Data Device Corporation BU-67121W Manual
www.ddc-web.com Rev B – 6/16
12
3 MODES AND OPERATION
The AIC includes basic modes of operation, Protocol Conversion Mode, Remote
Access Mode, and Stand Alone Mode.
3.1 Standalone Mode
Standalone mode allows the AIC to operate as a user programmable computer
system. Software Development Kits (SDKs) are provided for MIL-STD-1553 and
ARINC 429 to facilitate the development of applications requiring communication on
these avionics I/Os. Onboard video, a Serial port and USB ports can also be utilized
to further enhance Standalone mode. The user will not need to depend on a host PC.
Figure 4. Example of Avionics Interface Computer Used in Standalone Mode
3.2 Remote Access Mode
Remote Access Mode is a capability of the Avionics Interface Computer.
Figure 5 shows an example of the Avionics Interface Computer operating in Remote
Access Mode. In Remote Access Mode, users are able to develop applications
running on a remote computer that communicates over Ethernet to the AIC’s MIL-
STD-1553 and/or ARINC 429 channels. In the remote access configuration, the user
is able to write applications running on a remote host that invoke the AceXtreme MIL-
STD-1553 and/or ARINC 429 APIs. For use in Remote Access Mode, DDC offers