ARINC 708 Video Distribution Units
Easy · Effective · Reliable
Drive Four Control/Display Units With This Easy-to-Deploy Solution
The Ballard AB2-VDU Video Distribution Unit (VDU) is an ARINC 708 databus repeater. It enables up to four (4) radar Control/Display Units (CDUs) to be driven by a single display databus. The VDU solves the databus loading problem that occurs when more than one CDU is connected to the ARINC 708 databus.
The AB2-VDU is easy and straight-forward to deploy. Just install the hardware device; there is no software to load or upgrade. The unit operates from 28 volt DC aircraft power. After power is applied, the VDU automatically repeats the incoming ARINC 708 databus signal on the four outputs, distributing it to up to four radar control/display units.
Rugged and Ready
The AB2-VDU is easily deployed and ready to operate in the most challenging environments. The unit is SWaP (Size, Weight, and Power) optimized in a compact, rugged package for easier integration and longer life.
Highly Validated
- Commercial and military
- Fixed wing, helicopter, ground mobile
- DO-160 Certified
- Rugged: MIL-STD-810
- EMC quiet: MIL-STD-461
AB2-VDU System Diagram
Reliable ARINC 708 Video Distribution
The AB2-VDU Advantage
Databus termination must be carefully considered, especially when adding CDUs to an existing system. A simple weather/terrain radar system has one terminator in the T-R unit and another in the CDU. If a second CDU is added, it can cause an impedance mismatch. In addition, long stubs will distort the signal, resulting in unreliable operation.
The AB2-VDU solves both the loading problem and the stub problem. The input and each of the four outputs can be individually configured as terminated or unterminated to suit the application. This provides an ideal transmission line for each of the databuses—terminated at both ends and no stubs. Plus, if all the outputs are not needed, unused outputs can be disabled to reduce emissions.
Key Features
- Drives up to 4 displays from a single input
- Facilitates display integration
- Solves termination problems
- Simplifies aircraft system upgrades
- Rugged and reliable
- Easy installation
Ordering Information
Select your desired product in the table below. For more information or to request a quote, call +1.425.339.0281 or fill out the form at the bottom of the page.
AB2-VDU and Accessories
| Part Number | Description |
| 11-11020-03 | AB2-VDU |
| 11-11020-04 | AB2-VDU & Vertical Mounting Kit |
| 17019 | Mating Connectors (J1, J3) |
| 17021 | Lab Connectivity Kit |
| 17027 | Lab Connectivity Kit |
| 17023 | Horizontal Mounting Kit |
| 17024 | Vertical Mounting Kit |
Software
BTIDriver Application Programming Interface (included)
Device Driver Software (included)
Cables & Accessories
A wide variety of cables and accessories are available to complement these products.
Browse Cables & Accessories
Related Information
Avionics Databus Protocol Tutorials
Legacy, Obsolete & End-of-Life Products
Additional Information
Let's Start the Conversation
For more information or to request a quote, fill out the form below or call us at: +1.425.339.0281
Astronics Ballard Technology
11400 Airport Road Ste 201
Everett, WA 98204 USA
+1.425.339.0281
Ballard.Sales@astronics.com
