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Dielectric Measurement with E4990A with 16451B Fixture

Question asked by azham on Mar 4, 2015
Latest reply on May 14, 2015 by helenpt
Hello there,

Im trying to do a Resistance measurement with E4990A (up to120MHz) together with 16451B dielectric fixture.
I understand it only covers up to 30MHz when using with the fixture. However, during my testing it cuts off at 15MHz, no matter what material i put. Ive done the Open/Short Compensation as well.

Ive been going through the manual for 16451B and no mention on limitation when with use with E4990. As matter of fact it didnt mention at all about E4990 in the manual.

Can anyone clarify this why is it doing this?