How to determine the polarity with Twister with PTP820

there is a easy way to find out what polartiy it is when using twister.

By default, the splitter/coupler out provide is V-pol. like following.

The Twister has to marks, one shows V and one shows H.

All you need is to make sure the mark is aligned with the mark on the coupler or split. Then you know you are on V pol or H pol.

Here is example of V pol.

here is example of H pol.



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