I did the mod and getting to pin 5 was tough. However Doug mentioned that there is another point to the left of the chip thats easier to get to. Don't recall the point. But if the lead ever comes off of 5 I can assure you I will find it. :-) My unit zeroed about at about 2 V. So I am using a 10 T 10 K bourns pot with 1000 counter. Then a 3.3V reg directly attached with bypass caps driven by 8 V from the regulated supply in the RB. Very clean, 3 leads into the RB. Using shielded cable through the pot hole that actually does nothing. Regards Paul.
On Tue, Jan 31, 2012 at 2:19 AM, John Beale <be...@bealecorner.com> wrote: > On 1/29/2012 8:22 PM, Skip Withrow wrote: > >> I recall someone implementing C-field control on a FE-5680A with the pot >> disabled, but cannot find it now. If someone can point me to that post I >> sure would appreciate it. >> > > I added that post to the FE-5680A FAQ, and added my own photo also to help > locate the part. Note, I have not actually tried this modification myself. > > http://www.ko4bb.com/dokuwiki/**doku.php?id=precision_timing:** > fe5680a_faq#adding_an_analog_**adjustment_pot<http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:fe5680a_faq#adding_an_analog_adjustment_pot> > > Original post was by Bill Riches, Thu, 22 Dec 2011 14:01:18 -0800 > > > ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
