A PLL-based 25MHz OCXO for the FZ7001 Frequency Counter

2014-09-17 by rincewind

Update 2017-10-02: Added Firmware archive, see bottom of page I own an old ELV FZ7001 frequency counter: However, after I got a used LPRO-101 Rubidium Reference Clock, I noticed that the OCXO inside the FZ7001 is not very stable: even after warm up, it will drift 1-2ppm depending on time and temperature, which is quite[…] Read More…