>"I would say the temp sensor is working, but still why those jumps?"
Ah, that new temp plot looks like the 'normal' staircase steps I was talking about. The previous plot didn't look right with all the little steps in between. As I mentioned before, and Bob mentioned, any problem with the thermometer chip would only affect carryover and that is probably going to be a rare occurence. The T-bolt used a Dallas Semiconductor DS1620 and Dallas made an 'improvement' that caused this problem in the T-bolts. Apparently either the T-bolt firmware couldn't understand the LSD of the temp string or the new revision chip didn't display it and would display the temp steps as several times worse than the older DS1620 chips. The cure for the T-bolts was to replace the DS1620 Rev E chip with an older DS1620 Rev D or Rev C and the plot would look normal. There was never any indication that this caused any problem in operating the T-bolt but replacing the DS1620 chip sure made the plot look better. I replaced all those in the T-bolts I sold because most buyers would freak out if they saw the steps caused by the Rev E chip. The NTPB15AA I have was apparently made in April 2003 and your NTBW50AA was made in November 2004. This problem started showing up in T-bolts made after mid-2004 so I suspect the NTBW50AA has the same problem for the same reason (although the first plot you showed does look flakey as well). If you want to replace the chip it isn't that hard to do and I've bought the DS1620 Rev C chips on Ebay for cheap. -Arthur _______________________________________________ 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.