Disable 50Ohm load for PPS input
Since SCB v3.4 there is the possibility to disable 50Ohm for PPS input
https://www.ohwr.org/project/wr-switch-hw/wikis/Release_v34:
Changed EXTPPSIN input stage in order to add 50 R termination selectable by the FPGA.
I did look for a way to disable it, and I think we never implement it. It would be nice to include it in v5.0 (If it is not too late).
We have a client that can not provide 100mW on its PPS output, so he can not connect its output to WRS_PPSin