A bit of a false lead. I took the readings after an hour of warmup. However, after about two hours, the zero reading went to less thatn 0.2 uV, which seems just fine to me. I guess i just needed to get a really good warmup time. However, the 752 readings are varying over several uV when doing the CAL procedure. I am currently using unshielded leads so I suspect I am getting a lot of noise. Time to invest in some really good cables I guess. I was hoping to build my own cables as Bill Gold had suggested in a previous thread. Randy AE6YG

​You talked about after an hour of warm up... I never turn mine off unless I have to... Like to move it, ship it or power outage. That said do not do anything like this until it has been on for 4 hours Then run auto cal Do not take any reading for 5 minutes after you change wiring or switches. Consider 1000 plc and or stats mode. ​ Hope that helps On Sun, Jul 26, 2015 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> wrote: > A bit of a false lead. I took the readings after an hour of warmup. > However, after about two hours, the zero reading went to less thatn 0.2 uV, > which seems just fine to me. I guess i just needed to get a really good > warmup time. > > However, the 752 readings are varying over several uV when doing the CAL > procedure. I am currently using unshielded leads so I suspect I am getting > a lot of noise. Time to invest in some really good cables I guess. I was > hoping to build my own cables as Bill Gold had suggested in a previous > thread. > > Randy AE6YG > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > -- *John Phillips*

-------- In message <CANwu9JZP8Mb-PFS8qr7kfoBYjLgOEuc_0TQJbsvFw1XrNZC2Xg@mail.gmail.com> , Randy Evans writes: >A bit of a false lead. I took the readings after an hour of warmup. >However, after about two hours, the zero reading went to less thatn 0.2 uV, >which seems just fine to me. I guess i just needed to get a really good >warmup time. You may want to try to shade the terminals from air-movement when you work in that range, thermal sensitivity is not negligble. I had better luck using relatively thick (1.5mm^2) copper wire. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.