If you want to diagnose HDMI transmission issues, especially HDR related issues, you may need an HDMI 2.0a protocol analyzer. At CEDIA, Astro Design introduced two new models.
The VA-1844A is a handheld version that is offered for $9K and is HDCP 2.2 compliant. The VA-1845 is the source tester. The graphic below showcases its uses and features.
Astro Design also offers the VG-876 is the signal generator for UHD and HDR display evaluation. It has been certified by the UHD Alliance. Astro Design is now working with Dolby to create Dolby Vision test patterns as well. – CC