Mark Sims wrote: > Well, I did the experiment.... I put the unit into holdover, spritzed the > DS1620 temp sensor with cold spray, no immediate change in the DAC voltage > was seen. Then about 10 seconds later the DAC reading shot up. After a > minute or so, the temp reading was rapidly rising its way to normal and the > DAC voltage was dropping, lagging by about 10 seconds. > > Looks like the temperature definitely sensor affects holdover compensation... > > And yes Bruce, I agree that the software filtering does not increase the > accuracy of the readings. I think they do it to smooth out the control > voltage changes that the temp sensor readings lead to. > Mark
Smoothing will not occur unless there is some dither in the system. Small temperature fluctuations will suffice as will sufficient noise in the temperature measurement. Bruce _______________________________________________ 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.
