Radio Frequency Testing Procedures For Pickering Interfaces Switch Cards
The purpose of this RF Testing Procedures document is to define the methods for performing radio frequency (R.F) measurements in 50Ω & 75Ω
unbalanced and 100Ω-120Ω balanced test systems using a 50Ω vector network analyzer (VNA).
In order to perform 75Ω tests with a 50Ω VNA, it is necessary to use minimum loss pads. A set of two pads will be required to perform the tests detailed within this document.
To perform balanced tests, it is necessary to use a purpose-built impedance converter and, under certain circumstances, min loss pads.
Please note that it is not possible to detail every test permutation, i.e., multiple test cards etc., that may be encountered. For this reason, the sections in the document will refer to testing a single card; the same principles can be applied to multiple cards.
The document assumes that the operator has been trained to safely operate and perform measurements on the test equipment and the device under test. If in any doubt regarding this procedure or equipment, consult a suitably qualified engineer.
