Thanks Steve, all that makes sense to me. I also understand how the rubber deformation method brings some meaning to the 20G over 1ms into perspective (or the impulse). I also understand the disconnect between my original post and the tens of thousands of G’s others mentioned. I did not try to translate the 20G over 1ms into an actual impulse. So I do not know how it compares to others.

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Anyway, do you have a feel for if or how the specifications changed over the years? Said another way, where the same military specs understood when the 647 specification was written (I know Tektronix was enough on the leading edge that some specifications were written to what there equipment was capable of vs. any real world need/criteria.). Would a 647 and a 7000 series scope meet the same requirements? How about modern solid state scopes?. Conversely as people became more acquainted with both Oscilloscopes and solid state electronics. Where they allowed to be manufactured less bullet proof (for lack of better wording),

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The biggest reason I am asking all of this is because of the trouble I have had shipping my refurbished scopes after I have sold them. I package them what I consider to be very well. However the post office is capable of defeating even the best packaging it seems. Then again, perhaps the 7000 series scopes (non-militarized especially) are more fragile then they appear to be on the bench and my packaging is indeed not adequate. Would one expect a 647 or other scope with the specification they claimed to survive better than a 7000 series or 475 or??? Given the post offices apparent ability to reach well above a 20G threshold.

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As always Thank you for your time and the bandwidth.

?????Rob

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