>I have two Thunderbolts that I'm monitoring with >Lady Heather. The temperature on the older unit >(MFG 2/26/2004) seems to track the >environment. The newer one (MFG 11-24-2004) >shows 44.750000 °C and only changes in increments of exactly 1°.
All REV-E Thunderbolts with date codes after about mid-2004 used the DS1620 "E" chip and have this problem. Buyers have been told and believe the REV-E units are somehow superior to previous revisions so they will ask a known problem unit. I think they have seen articles on the internet that show really old units with the noisy Piezo OXCO and somehow believe that only the REV-E Thunderbolt has the newer Trimble OXCO, which is not true. After about 2001 all REV-A through E Thunderbolts had the new Trimble OXCO. I doubt you could find any with the older Piezo OXCO now. As far as I know there is only one U.S. seller of Thunderbolts on Ebay that replaces the DS1620 in these affected REV-E units with one that will display correctly with Lady Heather. I've heard several stories from buyers who have bought problem Thunderbolts from resellers, many of whom don't do any real testing to see their units work properly or are stable. Ask questions before you buy. -Arthur _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
