I'd like to know what this little portable offers that the 200 Mhz 475 lacks, aside from the features I mentioned before. I don't doubt for a minute that there may be advantages, but I can't imagine how that ultra-low bandwidth instrument can help much when working with a modern 805x-core MCU.

As I said before, I do have other instruments that provide higher bandwidth, more channels, pattern generation into the hundreds of MHz, but I've always preferred the ability that the TEK 475A provides, for me to operate the instrument "by Braille" simply because I've learned the feel of the controls. I have a couple of more modern analog 'scopes, with 400 MHz bandwidth and more channels than the old 250 MHz 475A, but those have bunches of buttons with context-sensitive purposes, so I always have to operate them in context, which then means looking at the controls rather than just where I'm working and the display. There are a couple of 500 MHz 'scope cards in my logic analyzer, but they, too, have the drawback that I waste a lot of time figuring out how to set things so they'll do what I want.

I'm curious how so low a bandwidth as this instrument provides can help determine whether clock precedes or follows 10 MHz data, and things like that. Does it really have a much higher bandwidth? Can the instrument detect glitches? Can it display events that occur every 10^6 sweeps? Does its sampling scheme even allow for that? I'm even curious how easy it is to work with when all four channels have probes attached. Doesn't it want to let the probes drag it off the work surface?

RE