Here's a graph of the ADC readings as I dropped the power supply
voltage from 18V down to 6V on my non-locking FE-5680:
http://n5tnl.com/time/fe-5680a/graphs/unit_1_volttest.png
I'd hoped that channel 2 would have been a supply voltage, but it
isn't, or it's one of the low voltage regulated rails. I was
surprised to see the channel 4 (still assuming it's VCXO related?)
swing change with supply voltage.
--
newell N5TNL
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