[time-nuts] New NTBW50AA
Mark Sims
holrum at hotmail.com
Wed Sep 11 14:05:55 UTC 2013
Geee, what's so hard to understand? As I said several times before, the firmware on these units can only read the temperature sensor to 1 degree increments (there is a 0.25C offset). The temperature "jumping around" is the temperature crossing the 1 degree C quantization threshold. Most of the firmwares do a running average of the last 10 readings, so you can see some intermediate values.
Also, due to a bug in the temperature sensor chip, you can see occasional spikes in the temperature readings. These show up as a step impulse on the leading edge followed a decay over around 10 seconds. All of these temperature sensor issues have been discussed ad nauseum here before. Search the archives...
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