[Open_electroporator] pyflex_f401 v0.5 --> v0.6 testing
John Griessen
john at cibolo.com
Fri Mar 30 01:37:08 UTC 2018
Here's the crystal oscillating as perceived via a Tektronix P6201 active FET probe that
adds 1.5pF extra loading on the crystal amp out terminal. There are 2 7pF caps adjacent to the
Epson FA-20H 2.5mm x 2.0mm crystal surrounded by a moat of zero volts metal. Probably radiating a little
since 16MHz speed --> 62.5 ns period does launch some waves. Only 0.4V tall though.
Later when FCC testing for lab equip, and for computer office gear standard, this probably won't need
a tin box soldered over it.
https://www.cibolo.com/docs/pyflex_f401_crystal_osc.jpg
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