[time-nuts] [qs1r] Looking for good, cheap, external reference
lists at rtty.us
Thu Sep 23 11:24:15 UTC 2010
That's the "good" temperature sensor.
Since Trimble never bothered to get the other one working, apparently the difference between the two didn't matter to the firmware / end application. The high resolution is certainly a lot more useful to me.
On Sep 22, 2010, at 10:18 PM, Mark J. Blair wrote:
> On Sep 22, 2010, at 5:57 PM, Bob Camp wrote:
>> The temp sensor is the one that moves in real small steps. The bad one moves in (1/2 degree???) big steps.
>> All of that (and much more) is visible if you bring up Lady Heather and see what's going on.
> My TBolt has the 3.0 firmware and the silver Trimble-marked OCXO. As I recall, Lady Heather plots the temperature with the scale set as small as 5 millidegrees C per division when the temperature isn't moving around too much. Does that mean that I got lucky and got one with the "good" temperature sensor, new firmware and "good" OCXO?
> BTW, I fixed the crashing issue I had previously mentioned. It turned out that my HP 6236B supply from eBay had a bad filter cap in the 5V supply, causing it to have poor load regulation and a lot of ripple, and in turn causing the TBolt's power supervisor to randomly trip. Now that I've replaced the cap I managed to complete a 48-hour survey, which I wasn't able to do before. Hooray!
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> Web page: http://www.nf6x.net/
> GnuPG public key available from my web page.
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