You've most likely seen test equipment with an external reference clock input, but I think a 1PPS input (or support for it) should also be included considering it is easier to route a 1PPS signal over long distances than a 10 MHz signal.
When routing the 1PPS signal and serial port data from a GPS receiver on the rooftop, I prefer fibre optic cables over coaxial or twisted pair since fibre optic cables are immune to ground loops, electrical safety issues and EMI, along with using a power supply with a high degree of isolation.
When routing the 1PPS signal and serial port data from a GPS receiver on the rooftop, I prefer fibre optic cables over coaxial or twisted pair since fibre optic cables are immune to ground loops, electrical safety issues and EMI, along with using a power supply with a high degree of isolation.
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