Mostly MSO, I think maybe also the physical size is less deep - check the datasheets.
When choosing remember that decodes are only available on 4-channel models.
Yep the 5000s are definitely less deep. I'm surprised that the MSO option would need that much more space on the 6000. Or maybe the 1 GHz units need some of it too.
So this is one of the rare times I've been lucky. I found someone with one to sell. The catch is he can't complete the self test. Apparently there's a keypad test, and the last item is the calibration protect switch on the back. He doesn't know what that switch does and isn't comfortable flipping it.
What *does* that switch do? My understanding is that it just locks out the option to do a user cal from the service menu.
Also, what's the test flow like for the self test? Is there any useful information that comes up before hitting the keypad test? I'm on the fence on this one. It's a nice scope to have, but I'm not confident of handling any repairs should it need any.