WABC HD test pattern

[@waynesthename5453]

When the network feed goes off, it broadcasts this so the engineers can tune it. When local affiliates goes to playing syndicated programming over the air, this is what broadcasts from the network satellite.

[@tamacat2001]

This has happened a few times on my local ABC affiliate WSYX, usually when weather alerts or breaking news during shows came on. I remember when Be My Valentine, Charlie Brown came on a few years and was interrupted by a news story, and when it returned, this came on until the commercial break ended.