FAQs from Rohde & Schwarz

Which test fixture for MDI mode conversion measurement at 100Base T1 Compliance Test?


For 100Base T1 Compliance Tests I have to perform the following measurements:

  • MDI mode conversion loss adaptor verification
  • MDI mode conversion loss and return loss

The software "Scope Suite" just tells me to use a "Text fixture" but not which one, see screenshot:

Text fixture MDI mode conversion measurement

So which test fixture do I have to use?


There are two test fixtures you can use:

  • RT-ZF7A or
  • RT-ZF8 - section 1 "General Purpose SMA Adaptor"