[time-nuts] Frequency counter recommendation

jimlux jimlux at earthlink.net
Sun Dec 19 16:19:12 UTC 2010


Bob Camp wrote:
> Hi
> 
> Which is why a simple / cheap opto isolated RS-232 connected to a USB dongle makes a lot of sense.
> 
> Bob
> 


There are some nice solutions, though, using USB directly, which has the 
advantage of providing a few watts of power.  Isolated DC/DC converters 
are readily available.  you might be able to do transformer isolation of 
the two data wires.



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