Things to Consider
We recommend using the shortest length possible for your setup in order to avoid any unwanted problems. There may, however, be circumstances where you need a longer cable. In those situations, please consider the following when picking a longer HDMI cable:
- Be wary of any HDMI cable that is longer than 25 feet, as they can suffer from signal degradation and may not maintain a reliable connection between your devices. When considering longer run cables, quality becomes much more important so if required, invest in a long HDMI cable with higher quality to best suit your needs.
- Try to avoid joining several cables together with an HDMI adapter, as this can introduce problems such as signal degradation.
- Always check and confirm an HDMI cable is compatible with all your devices, HDMI switch, HDMI splitter, and content types before installing it permanently.
- Depending on the actual cables and any other connections in the situation (Cable type, structure, shielding etc.) you may get different results so proper testing in your intended environment is recommended.
- An active HDMI cable uses a small chip to borrow a tiny bit of power from the devices they’re connected to, which helps maintain signal strength over longer distances.
Our engineers reference specifications such as this https://hdmi.org/spec21sub/ultrahighspeedcable
If you are considering using longer than normal HDMI cables, we recommend to use STC-tested high-speed HDMI cables, such as Premium high-speed HDMI Cables for long distance applications and adding an active 4K HDMI repeater or extender if needed.
H200 device Amino QA test results:
4K TV list
- LG 43UF6400, HDMI port 2 - ARC
- Sony KD-55X8500B, HDMI port 1 and 2
Test resolutions: 720p-50Hz
We tested H200 with a 15M HDMI cable at the below resolution and without problem.
We found that as expected a 15m HDMI cable did not support the reliable transmission of 4K video streams and it is not recommended to use HDMI cables for long transmission lengths.
Attached is the 15m HDMI cable spec. for your reference