rich...@karlquist.com said:
> There is always an implied clock recovery loop that the the jitter is
> measured against. The loop may itself affect the jitter measurement either by
> cleaning up jitter or contributing to it.
Interesting. I hadn't thought about it that way.
Suppose I measure
Perry,
Typically jitter is expressed in the time domain (so many ps peak to peak
for instance)
Phase noise is expressed as a power ratio in the frequency domain.
Otherwise they usually represent the same phenomenon.
Didier
On Thu, Apr 9, 2020, 6:29 PM Perry Sandeen via time-nuts <
Learned Gentlemen,
The explanation by Tobias was excellent and fully answered my question.
I think I'll be able to use my Fluke 6080AN for offset generation so the
problem will be the measurement after the mixer.
What is now called phase noise was taught to me as *jitter* over 55 years ago.
Learned Gentlemen,
Rick wrote:If you really need lower far out phase noise than the 10811
offers,you can redesign the 2nd and 3rd bufferamplifier stages. The 10811
designers knowingly degraded the phasenoise in those stages because of
requirements to be backwardcompatible with 10544 sockets.
Learned Gentlemen,
wrote:
Backing up a little bit. the PPS in on these telecom Rb’s isdesigned to easily
get the part set on frequency. It’s not designedfor a GPSDO application.
While this is true, I've copied three LPRO-101 circuits from the net and
digitized some of the original pencil
On Donnerstag, 9. April 2020 03:58:11 CEST Hal Murray wrote:
> What's the problem with digital gear at cold temperatures? The only one I
> can think of is that electrolytic capacitors stop working when the
> electrolyte freezes.
The two most common problems are that gates switch too fast so
Thanks for all of the replies to my question about a connector for the
HP10811A. Sounds like a number of good options.
Frank
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On 4/9/20 8:36 AM, Skip Withrow wrote:
Hello Time-Nuts,
This is a subject that I have been interested in for quite some time.
If you do some searching on Rb oscillator aging, there is a paper from
FEI that showed GPS units aging in vacuum (and space) differently (as
in opposite sign) than at
Very nice experiment. What do you think might be affected by pressure?
At least in the physics pkg?
Don
On 2020-04-09 09:36, Skip Withrow wrote:
Hello Time-Nuts,
This is a subject that I have been interested in for quite some time.
If you do some searching on Rb oscillator aging, there is a
Hello Time-Nuts,
This is a subject that I have been interested in for quite some time.
If you do some searching on Rb oscillator aging, there is a paper from
FEI that showed GPS units aging in vacuum (and space) differently (as
in opposite sign) than at sea level. My thought was that there
Are currently free
https://www.npl.co.uk/skills-learning/free-e-learning
I have no connection to NPL
Cheers
Arne
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Or with wire tab for hand soldering wires
Mouser #: 587-306-50-015
Mfr. #: 306-015-500-102
Mfr.: EDAC
Description: Standard Card Edge Connectors 15P SOLDER EYELETS CENTER SPACE
$7.39
On Thu, Apr 9, 2020 at 7:26 AM Graham / KE9H wrote:
> A connector which works well for connecting to the
A connector which works well for connecting to the HP10811 is in stock at
Mouser, which is open and shipping.
Mouser #: 587-306-52-015
Mfr. #: 306-015-520-102
Mfr.: EDAC
Description: Standard Card Edge Connectors 15P SOLDER TAIL CENTER SPACE
Price Quantity 1: $11.47
--- Graham
On Wed, Apr 8,
Hi
It was one of those things that sounded like a great idea when they first
sketched
it up. Once they dug into the grubby details, it didn’t make as much sense.
This was
back in the early 90’s. The guts of a cell tower were quite a stretch to come
up with
back then, even at normal
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