Re: [time-nuts] More HP5065 experiments

On Tue, 29 Sep 2015 09:05:18 +0200 Attila Kinali wrote: > BTW: for those who are looking for Vanier, don't try to get > a print version. They are unobtanium. And even if you find one, they > are horribly expensive. CRC offers the pdf's for 750USD, which is > wy overpriced

Re: [time-nuts] More HP5065 experiments

On Mon, 28 Sep 2015 22:59:27 +0200 Magnus Danielson wrote: > > There should be somewhere a mention how much the frequency shift > > of an Rb vapor cell due to light intensity change is, but i couldn't > > find a good number in a couple of minutes. If you need one,

Re: [time-nuts] More HP5065 experiments

> That said... if anyone has a printed copy and is willing to sell it > for a reasonable price. I'd be a buyer :-) Attila, There's a bunch of copies at http://www.abebooks.com/ in the $300 to $400 range. /tvb ___ time-nuts mailing list --

Re: [time-nuts] More HP5065 experiments

I did go out to look for the "The Quantum Physics of Atomic Frequency Standards. Did see numerous pay for sites and then others that were very questionable. There were two possible sites. One appera to be an Italian Amateur and the other a Chinese site. Anyone have a semi trusted link please.

Re: [time-nuts] More HP5065 experiments

Attila, On 09/29/2015 09:05 AM, Attila Kinali wrote: On Mon, 28 Sep 2015 22:59:27 +0200 Magnus Danielson wrote: There should be somewhere a mention how much the frequency shift of an Rb vapor cell due to light intensity change is, but i couldn't find a good number

Re: [time-nuts] More HP5065 experiments

On Tue, 29 Sep 2015 10:32:44 -0400 paul swed wrote: > I did go out to look for the "The Quantum Physics of Atomic Frequency > Standards. Did see numerous pay for sites and then others that were very > questionable. > There were two possible sites. One appera to be an Italian

Re: [time-nuts] More HP5065 experiments

In message <560ac40b.1040...@rubidium.dyndns.org>, Magnus Danielson writes: >> If possible, I'd also check the spectrum of the lamp before and after >> the filter, depending on different lamp voltages, temperatures and >> filter temperatures. But that depends on having an optical

Re: [time-nuts] More HP5065 experiments

In message <560b0e63.1060...@rubidium.dyndns.org>, Magnus Danielson writes: >For instance, the lamp oscillator is >open-loop, so supply voltage and temperature effects will factor in >undamped. Servo up the intensity seems to be the remedy there. It might also be an interesting

Re: [time-nuts] More HP5065 experiments

Poul-Henning, On 09/29/2015 10:01 PM, Poul-Henning Kamp wrote: In message <560ac40b.1040...@rubidium.dyndns.org>, Magnus Danielson writes: If possible, I'd also check the spectrum of the lamp before and after the filter, depending on different lamp voltages, temperatures and filter

Re: [time-nuts] More HP5065 experiments

On Sun, 27 Sep 2015 07:46:26 + Poul-Henning Kamp wrote: > Discovery of the day: The voltage supplied to the Rb87 lamp changes > the frequency on the order of 1.5e-11 per volt. > > I have no idea why... > > http://phk.freebsd.dk/hacks/HP5065A/index.html My first

Re: [time-nuts] More HP5065 experiments

In message <56080c0a.20...@gmail.com>, EB4APL writes: >According to your linked info I understand that you don't have >schematics and more info about the 105 OCXO. The info I was referring to is the background typically found in a HP Journal article, which says something about design

Re: [time-nuts] More HP5065 experiments

Hej, On 09/28/2015 04:17 PM, Attila Kinali wrote: On Sun, 27 Sep 2015 07:46:26 + Poul-Henning Kamp wrote: Discovery of the day: The voltage supplied to the Rb87 lamp changes the frequency on the order of 1.5e-11 per volt. I have no idea why...

Re: [time-nuts] More HP5065 experiments

Poul-Henning, On 09/27/2015 09:46 AM, Poul-Henning Kamp wrote: Discovery of the day: The voltage supplied to the Rb87 lamp changes the frequency on the order of 1.5e-11 per volt. I have no idea why... http://phk.freebsd.dk/hacks/HP5065A/index.html I can think of two mechanisms in

Re: [time-nuts] More HP5065 experiments

In message <5607d3b0.80...@rubidium.dyndns.org>, Magnus Danielson writes: >You should be able to servo the intensity using the DC intensity level >detected by the photodetector. That would require a way to steer the intensity. I can try to measure that at some point. -- Poul-Henning

Re: [time-nuts] More HP5065 experiments

Hi Poul-Henning, According to your linked info I understand that you don't have schematics and more info about the 105 OCXO. The HP 105 and HP 5065A don't include any information, treating it as a module that is not field reparable, but the HP 5061A Cesium Frequency Standard manual, while