Author Topic: Older digital oscilloscope life of flash ram  (Read 15776 times)

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Offline quantumfallTopic starter

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Re: Older digital oscilloscope life of flash ram
« Reply #25 on: October 20, 2010, 12:25:34 pm »
Too bad you did not buy the the PM3380.
The userinterface if much better than the Hameg I think.
More options for post processing the signal and waveform measurements.
Service manual is available on the web. O I can send you one.
Calibration is done automaticaly.
The scope has an internal voltage reference that consists of a bandgap reference and a calibration resistor.
Timing is based on a chrystal based oscillator that can be verified with an external reference signal.
Its either good or needs to be replaced.
I have a PM3394 now for 15+ years. Never had any problems.


Oh well that sounds like its a good scope, I had a bad feeling about the way the PM3380B was described as uncalibrated and as its an ebay one  I'm very buyer beware.

The Hameg has some measurments of the waveforms done by the computer and displayed I think,  it also has an autoset feature and stored settings that can be called up.

I'm sure it will have more than enough features for my level of use, I expect I will learn a lot more about measurements and foibles of the thing as I go along.

Its a done deal now, as long as I get some value for the money I will be happy.

The Fluke did look very modern, as I say I am wary of things that have flash memory that stores vital settings in any equipment that has an age to it, if it's a return to manufacturer for service only.  That might not even get supported anymore.  Still I'm only paying a fraction of the new cost.

 


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