What does the TV test pattern means......

[Justdroppedin]

https://i.redd.it/os517meabc561.jpg

[The Noof]

I miss the native American test pattern that was on after the midnight sign-off when I was a child.lol

[Justdroppedin]

https://upload.wikimedia.org/wikipedia/commons/a/ac/Indian_Head_Test_Pattern_with_Labels.png

[Terryl]

It meant that we all could go home for the night, after shutting everything down.