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What’s the Deal with AOC Failures?

Active optical fiber (AOC) failure rates can largely depend on crude testing that does not account for increased distances after adding passive HDMI extenders.

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2 Comments
Posted by highfigh on June 12, 2019

HDMI has been a burden for far too long.

Posted by bobrapoport on June 12, 2019

It’s clear that not all HDMI AOC’s are created equally.  Some use plastic fiber instead of glass to cut their cost.  Some skimp on the opto-electronics. Others cant pass the Eye Pattern Test at distance.  However, there are several brands that work great, are made right, and delivers fantastic performance at spec. 

I encourage dealers to test HDMI AOC’s thoroughly before recommending a brand to customers.  HDMI AOC cables are active components, they require AC power to work.  The source of the power and whether its rated correctly can be the difference between success and failure. 

Some AOC cables are powered by the #19 HDMI pin of the source device, others by outboard AC adapters.  If the electronics are not designed properly for this purpose, they can fail to deliver adequate power to the cable so it fails.  Dont paint this subject with too broad a brush, thats not fair either.  HDMI Fiber Optic cables outperform traditional copper cables when it comes to transmission of UHD 4K content over distances as short as 7 feet.  Prices have come down too, competitive with the higher end of copper cables.

2 Comments
Posted by bobrapoport on June 12, 2019

It’s clear that not all HDMI AOC’s are created equally.  Some use plastic fiber instead of glass to cut their cost.  Some skimp on the opto-electronics. Others cant pass the Eye Pattern Test at distance.  However, there are several brands that work great, are made right, and delivers fantastic performance at spec. 

I encourage dealers to test HDMI AOC’s thoroughly before recommending a brand to customers.  HDMI AOC cables are active components, they require AC power to work.  The source of the power and whether its rated correctly can be the difference between success and failure. 

Some AOC cables are powered by the #19 HDMI pin of the source device, others by outboard AC adapters.  If the electronics are not designed properly for this purpose, they can fail to deliver adequate power to the cable so it fails.  Dont paint this subject with too broad a brush, thats not fair either.  HDMI Fiber Optic cables outperform traditional copper cables when it comes to transmission of UHD 4K content over distances as short as 7 feet.  Prices have come down too, competitive with the higher end of copper cables.

Posted by highfigh on June 12, 2019

HDMI has been a burden for far too long.