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Thread: DSO8064A uncertain in time measurement


Permlink Replies: 2 - Pages: 1 - Last Post: Dec 21, 2011 1:35 AM Last Post By: Guest Threads: [ Previous | Next ]
Guest
DSO8064A uncertain in time measurement
Posted: Dec 20, 2011 1:24 AM
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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
ksmith

Posts: 132
Registered: 08/06/09
Re: DSO8064A uncertain in time measurement
Posted: Dec 20, 2011 12:37 PM   in response to: Guest in response to: Guest
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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.
Guest
Re: DSO8064A uncertain in time measurement
Posted: Dec 21, 2011 1:35 AM   in response to: Guest in response to: Guest
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Dear ksmith

Thanks for your explanations.

BR and Merry xMas

Daniele Banfi

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