He is careful to short the capacitor before connecting to the test leads going to the TDR. A long, say 100 ft, run of coax cable can store a great deal of charge, if unterminated in a bleeding resistance. It is good practice to short/discharge the line using a screwdriver across the coax connector, before connecting it to your TDR or VNA.
Last 15 minutes of the lecture, just amazing!
He is careful to short the capacitor before connecting to the test leads going to the TDR.
A long, say 100 ft, run of coax cable can store a great deal of charge, if unterminated in a bleeding resistance. It is good practice to short/discharge the line using a screwdriver across the coax connector, before connecting it to your TDR or VNA.