English 
There is nothing worse than finishing a clean install, plugging in the source, and seeing... nothing. No signal. When dealing with fiber optic HDMI cables, "rough handling" is the enemy. However, many failures are due to simple, preventable errors during the pull.
Unlike copper cables, Active Optical Cables are unidirectional. They have a specific "Source" and "Display" head containing different chipsets.
The Fix: Always check the labels before pulling the cable through 50 feet of ceiling grid.
Pro Tip: At 8khdmiaoc.com, our connector heads are clearly color-coded or labeled to prevent this costly reversal.
The junction between the HDMI connector and the cable is the most fragile point. Pulling the cable head directly can sever the internal fiber solder points.
The Fix: Always use a pulling sock (mesh grip) attached to the cable jacket, not the connector.
Standard fiber optic cables utilize glass cores. A 90-degree sharp bend around a conduit corner can shatter the glass, causing permanent signal loss.
The Solution: Use sweeping bends. Or, upgrade to Armored AOC. Our spiral steel armor limits the bend radius physically, preventing the fiber from snapping under stress.
Over-tightening zip ties can crush the fiber cladding, causing light leakage and signal attenuation.
The Fix: Use Velcro straps. Or better yet, use Armored AOC which can withstand high crush loads (up to 100kgf temporarily) thanks to its stainless steel internal wrapping.
Never install a cable "blind." Manufacturing defects or shipping damage, while rare, can happen.
The Fix: Always perform a "bench test" with a portable 8K generator or a laptop before the cable enters the wall.
Standard fiber is fragile. Construction sites are dangerous. Bridge the gap with Armored 8K HDMI 2.1 AOC—designed to survive the mistake of a busy job site.
