For TDR measurements, it is recommended to set a wide frequency range, e.g. 1MHz-900MHz.
Surely you ask a lot of things at the same time, so I recommend the group wiki and files folder, where you will get the answers to the most important questions in the forum. Besides, I recommend my website, I¡¯m trying to create a similar collection. A simple question with a simple answer.
I wish you a useful stay.
73, Gyula HA3HZ
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*** If you are not part of the solution, then you are the problem. ( ) ***
Gyula Molnar