Re: Switching a Tek TDS 5204 to 50 Ohms input impedance - Strange!


When the photo diode output is connected to 50 ohms vs 1megohm, I would expect the voltage to drop unless there is an amplifier in line. And even if there is, it would have to have a low output impedance to drive 50 ohms with the same voltage as 1 megohm.


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