Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi Do you (or your assistant) have a cell phone? Where was it when the original issue occurred? Yes, it’s a bit of a long shot, but I *have* seen test data messed up by the phone in a tech’s pocket. We finally worked it out when the speaker on the test computer started chirping as the cell

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

On 12/16/2016 1:54 PM, wb6bnq wrote: > Hi Pete, > > Are you really at an altitude of 645 meters ? Yes. That's the result of multiple surveys over a week a year or two ago. I'm pretty sure the altitude hasn't changed since then. :) I think Lady Heather shows the altitude as that above the WGS84

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi > On Dec 16, 2016, at 3:21 AM, Pete Stephenson wrote: > > On 12/15/2016 7:45 PM, Charles Steinmetz wrote: >> Tom wrote: >> >>> There's something very odd going on here, either with Pete's TBolt, >>> and/or with Mark's Heather v5. >>> >>> 2) It also shows some truly

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi Pete, Are you really at an altitude of 645 meters ? Also, it seems that your oscillator gain (currently at -5 Hz/v) may not be set right ? Have you checked the power supply voltages and observed them on an oscilloscope to see if they are relatively clean and free of spurious junk ? The

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Tom wrote: There's something very odd going on here, either with Pete's TBolt, and/or with Mark's Heather v5. 2) It also shows some truly erratic behavior the last day and a half, with multiple, massive, sudden temperature drops going down several degrees. I've never seen this. I think

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Pete kindly sent me the raw data. Well, it's not quite "raw" in the TBolt binary TSIP sense, but a Heather-processed ascii log format. There's something very odd going on here, either with Pete's TBolt, and/or with Mark's Heather v5. I'm happy Pete has a keen eye and spotted this. 1) Attached

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi If you *do* need to troubleshoot a weird temperature issue, there are dirt cheap USB thermometers out there. It’s a bit of a gamble on finding the one(s?) out of the batch that works right. When you get one that does work properly, they are quite adequate for tracking something like a 0.5

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

On 12/15/2016 8:35 AM, Mike Cook wrote: > Hi Peter, > I also have a T-Bolt monitored by LH5 but am not seeing any glitches like > yours. No clear idea what may be the root cause, but from your screen dump > all the metrics are affected so it is not likely to be just a failing temp > sensor.

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi Peter, I also have a T-Bolt monitored by LH5 but am not seeing any glitches like yours. No clear idea what may be the root cause, but from your screen dump all the metrics are affected so it is not likely to be just a failing temp sensor. Maybe something global such as power cleanliness.