1PPS signal from GPS: do the electrical connections need special treatment?
The 1-pps pulse is not particularly brief; I've never seen one that is less than 100 &micro;s, and some as long as 1 ms or even 10 ms. The key is the timing of the rising edge of the pulse, and how accurately you want to capture it. If you're just triggering a microcontroller timer or interrupt using it, it shouldn't require any special treatment; just a reliable connection.