The ARINC 818 video transmission protocol has gained wide adoption as a standard for high-performance video systems in military and commercial aircraft. ARINC818 lends itself to applications that require few connectors, low weight, EMI resistance, or long-distance transmission. It serves as an interface solution for a wide range of used cases that includes cockpit recorders, cockpit simulators, video concentrators, infrared sensors, etc.
Typically, ARINC818 is implemented over optical and copper channels for speeds between 1Gbps to 3Gbps, but beyond 3Gbps it is implemented exclusively over fiber optics links.
Many avionics industries use copper transmission at a 1x link rate (1.0625Gbps) to provide low-resolution video at higher frame rates and high-resolution video at lower frame rates. Furthermore, with bit error rate having a significant impact in characterizing the performance of the data channels, achieving lower bit error rates in the received video frames via a copper medium is challenging compared to an optical medium.
As a global leader in ARINC818 protocol-based products, iWave Systems successfully implemented ARINC818-based video transmission over the copper transmission medium. With cabling playing an important role in the copper transmission medium for getting the expected quality of video output, the R&D team analyzed various key factors to deal with the copper cables.
ARINC818 video transmission via conversion cards over the copper transmission medium
The ARINC818 to DVI and vice versa conversion card setup was used to observe the video output quality originating from the video source. The DVI input was converted to ARINC818, transmitted over the 100-Ohm copper cable, and converted back into DVI. Twinax shielded copper cable and Custom Quadrax copper cable were used in the setup to test the feasibility of transmission at a differential impedance of 100-Ohm and data transfer rates at 1.0625Gbps.
Various key factors were considered while implementing the copper-based interface such as,
A full suite of tests was conducted for ARINC818 IP over the copper transmission medium proving that iWave’s ARINC818 protocol conversion cards are promising for applications where robustness, low latency, and reliability are necessary.
ARINC818 to DVI & Vice Versa conversion card features
iWave Systems, with its 21 years of valuable experience in the FPGA domain, offers an extensive suite of ARINC818 protocol-based solutions and has successfully delivered several custom designs to our esteemed clients around the world. The ARINC818 IP embedded conversion cards can be leveraged to meet the advanced avionics applications with a significant requirement in terms of performance and reliability.
More information on ARINC 818 Solutions can be found here.
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