[time-nuts] FE-5680 ADC vs. supply voltage

Scott Newell newell+timenuts at n5tnl.com
Sun Jan 22 23:42:00 EST 2012


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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