Rigol DS2072A 17.61 seconds (tried 3 times .61 was the best, .67 was the worst)
Analogs from cold:
Tek 7613 4.73 seconds
Tek 7603 4.60 seconds
From recently turned off:
Tek 7613 3.54 seconds
Tek 7603 2.08 seconds
Edit: But I'm not going to enter, seems on the rules it mentions you must have purchased a siglent product.
Edit 2: since that's no longer needed I'll enter, and here is the requested picture after boot:
Rigol DS2072A
Tek 7603:
Tek 7613:
Would love to put a picture of the booting time, I captured the times using my Blackberry and it doesn't have a default screen capture, I guess I could install some software but I rather use my phone for phone things.
On all of them I measure the boot up time until I could use the device, meaning that even the analogs I would wait until the traces line up with the reticule (specially on the 7603 because it turns on fast but the traces converge over time so I put the time when they were usable. None of the scopes I have have a boot counter or power counter cycles that I know of.
Tek 5110 time base is busted but it takes 10 seconds to show a trace from cold but it's not really functional.