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www.altinex.com
Versatile DA103-217 Solves Challenging Installations Requirements
Introduction
The Altinex DA103-217 Line Driver/Receiver was designed to address many common
difficulties encountered by AV designers during AV systems installation. These difficulties
include: smearing video, unstable sync, low image contrast, and mismatched resolution between
a laptop and a display. With its extremely small size, the DA103-217 fits into small spaces as
well as behind any wall mounted LCD display. The DA103-217 comes with a short VGA cable
and a low profile external power supply that takes space similar to that of a regular power cord.
Figure 1. The DA103-217 VGA line driver and receiver
Features and Application
The DA103-217 can be used as a VGA line driver or a VGA line receiver. When used as a line
driver, the DA103-217 will amplify video and sync signals and transmit them more than 150ft
over VGA coaxial cable maintaining 1600 x 1200 resolution. Individual adjustments allow users
to improve image quality and compensate for decreased contrast level.
AP-016 Rev 1
Page 1 of 6
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Summary of Contents for Altinex VGA Line Receiver DA103-217
- Page 1 Versatile DA103-217 Solves Challenging Installations Requirements Introduction The Altinex DA103-217 Line Driver/Receiver was designed to address many common difficulties encountered by AV designers during AV systems installation. These difficulties include: smearing video, unstable sync, low image contrast, and mismatched resolution between a laptop and a display.
- Page 2 Figure 2. Using the DA103-217 as line driver In addition, the DA103-217 has circuitry to buffer EDID (Extended Display Identification Data) signals from a computer and will transmit them 150ft to a display. Without the buffer, these signals can be transmitted only 25ft, thus losing the monitor’s information for longer cable lengths.
- Page 3 Figure 4. EDID signals are not available through the AV System With the DA103-217 and the EDID Blaster software (Developed by Altinex), the EDID information from a display can be read using a laptop and then programmed to the internal line driver' s EDID emulator.
- Page 4 The DA103-217 has a powerful equalization circuitry and can recover degraded VGA signal as far as 250 ft away when standard VGA cable is used. When connected at the end of a cable, the DA103-217 can significantly improve image contrast and sharpness. When VGA signal travels through coaxial cable, the signal gets degraded due to the capacitance and resistance of the cable.
- Page 5 the sync threshold from 0 to 100% of the sync amplitude. This adjustment level guarantees accurate sync recovery for the longest cable length. For extra long cable lengths, it is possible to use two DA103-217s to extend the distance to over 400ft.
- Page 6 Figure 10. 250ft of coaxial cable after equalization with DA103-217 Conclusion The Altinex DA103-217 is a versatile AV tool that is easy to use and provides a wealth of capabilities to resolve many common challenges during a typical AV system installation. With separate equalization and gain controls, this unit provides great flexibility in determining just the right amount of adjustment required.
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