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Registered Member #4105
Joined: Sun Sept 25 2011, 02:27PM
Location:
Posts: 7
I'm shopping for an oscilloscope for some HV projects. I'm looking at 20KV or less and 100Mhz or less. With the proper probes, would the 24xx series from Tektronix be a good unit? Any other recommendations? I'd like to spend less than $400. Thanks
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Im going to get the same 50 or 100Mhz Rigol DS1502E everyone else has on the fourm.
The probes determine what your V is above 300V or so, not the O-scope itself. Except for on the display if the scope is smart enough to realize a 1000:1 probe is attatched and then change the Y label. But i wouldnt make my buying decision on that feature.
Registered Member #480
Joined: Thu Jul 06 2006, 07:08PM
Location: North America
Posts: 644
Seeker -
The Tek 22XX and 24XX series oscilloscopes are extremely well made and reliable instruments. We used quantities of the 2445 and 2465 'scopes for "production" testing for years, and the failure rate was extremely low.
However, the input amplifiers of ANY 'scope, old or new, analog or digital, can be instantly destroyed by a severe overvoltage event. Measuring 20KV directly with an oscilloscope always carries some risk, even if you are using a high quality probe. Do you really need to see the waveforms of very high voltage signals? If you are just trying to measure voltage, use a good HV probe and a moderate quality digital multimeter.
Measuring a 20KV signal at 100MHz is not trivial; a TEK P6015A (flat response to 75MHz) will run you nearly $1800. Measuring a low voltage 100MHz signal, or a 20KV DC potential, is relatively easy.
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Oscilloscope question
