We are putting aside some money for a PC-based oscilloscope, which needs to 
have one basic requirement: record long waveforms (several seconds to 
infinity) with a resolution of about 1 us (higher is better).

I have a Tektronix TDS 2014 on my desk, and it's a reasonably good scope, 
but even though it has a high sampling rate, it cannot record long 
waveforms. So I have to zoom out, record a waveform, zoom in on the region 
of interest, and hope that the next time I single sequence, the waveform 
would fall in the same spot.

Ideally, it would be nice if the bundled software could be set up as a 
protocol analyzer, but that is not a requirement.

All suggestions are appreciated.

Vitaliy 

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