Originally Posted by Steve Eddy
What the expert attested to was that Russ Andrews was not able to adequately substantiate their claims. That doesn't require any testing on the part of the expert, but rather depends on the evidence provided by Russ Andrews.
In other words, the burden of proof wasn't on the expert to falsify Russ Andrews' claims, rather, the burden of proof was on Russ Andrews to substantiate their claims. What the expert concluded was that Russ Andrews fell short on that count.
Agreed. However, the expert made claims regarding the susceptibility and sensitivity of equipment to common mode vs differential mode RFI, and he asserted that the cord was not capable of protecting the system against one specific variety.. All that without proof of any kind in support of his assertions.
Reminds me of a co-worker who beat a radar speeding ticket by using his title of EE to explain to the judge that the radar calibration technique using a tuning fork was not well controlled because the tuning fork could not be held perfectly perpendicular to the microwave beam, therefore calibration could not be guaranteed to be accurate.
The judge believed him as a result of his credentials. Of course, neither my co-worker nor the judge understood that the calibration did not require the angle be correct, merely that a metallic object resonated at a very specific frequency within the beam, reflecting it back. The device was not measuring doppler per se, but the beat frequency of the send mixed with the return. Excessive angle would prevent lock of the gun.
As such, the veracity of the expert's comments were not evaluated with respect to the actual conditions the product would be used in. Instead, it was decided that an "expert" who stated that a bar was not cleared by the defendent.... by the expert's unsubstantiated say so..was sufficient to conclude against the defendent.
ps..hey, happy new year steve.
pps. Nope, I am looking at the correct loop. You've not followed my EMC discussions, eh??
Edited by jnjn - 1/12/12 at 10:55am