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DSO8064A uncertain in time measurement

Question asked by daniele.banfi on Dec 20, 2011
Latest reply on Dec 21, 2011 by daniele.banfi

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Hello

I need to define in my measurement report the DSO8064 uncertain in time base.

How to calculate ?

Any help is aprecied...

Daniele Banfi

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ksmith Dec 20, 2011 11:37 AM
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the time scale accuracy (TSA) is called out in the data sheets as:

±(15 + 2 • (years since manufacture)) ppm

so, if it was "just" built, the TSA is 15 PPM.

e.g. if you capture 1 second, the max error between the start and stop of that 1 second is 15 us.

this represents the (worst case) SYSTEMATIC part of the error.

OTOH, in the service guide, it calls out how to do a Performance Verification (PV). You can do these tests and know what you TSA actually is.
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daniele.banfi Dec 21, 2011 12:35 AM
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Dear ksmith

Thanks for your explanations.

BR and Merry xMas

Daniele Banfi
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