On 5/06/2012 4:52 PM, Jerry Mulchin wrote:
Tim,
Can you describe your test setup used to measure the Phase Noise Plots
you show in the links provided.
Are you using the 8566B to measure the Phase Noise directly, or are you using
a Phase Noise test set to make the measurements?
Hi Jerry,
Tim,
Can you describe your test setup used to measure the Phase Noise Plots
you show in the links provided.
Are you using the 8566B to measure the Phase Noise directly, or are you using
a Phase Noise test set to make the measurements?
Thanks
Jerry
At 08:33 PM 6/4/2012, you wrote:
On 3/06/2012
Most Rb's can be improved when it comes to phase noise even a FRK-H, some
by replacing the internal oscillators, some by adding an external analog
loop. How ever multiplying to 10 GHz and you have to contend with the 60 db
deterioration. One way around is higher frequency XTAL or SAW
Tim,
Can you describe your test setup used to measure the Phase Noise Plots
you show in the links provided.
Are you using the 8566B to measure the Phase Noise directly, or are you using
a Phase Noise test set to make the measurements?
Thanks
Jerry
At 08:33 PM 6/4/2012, you wrote:
On 3/06/2012
Jerry, Chris,
it's all relative, while the Lpro may be a good Rb standard, it's phase
noise is not that good really. You list:
-96dBc/Hz @ 10Hz, -138dBc/Hz @ 100Hz, -152dBc/Hz @ 1KHz offsets
For the Lpro. The new Jackson Labs Technologies LN CSAC GPSDO with SC-cut
phase noise and
Hello,
El 03/06/2012 10:46, saidj...@aol.com escribió:
The FEI-5680A Rubidium that we discussed here some time ago has a much
worse phase noise plot of course, because the 10MHz is generated digitally
through a DDS, not a 10MHz crystal oscillator..
There is a version that generates 10MHz
Said,
Thanks for the info and congrats on the stats from the Jackson Labs stuff.
You mentioned the older HP Z3801. I wonder if you (or others) happen to
have comparison numbers on the Z3816A with the MTI 260 oscillator or the
Z3805 with (I think) the same oscillator. I thought I heard the MTI
hello Rex,
from what I have seen the lowest noise is available on the Z3801 with 10811. I
also have a Z3815 with E1938A oscillator, but the 3801 is much less noisy and
more stable. Don't have a 3816 or 3805 to test against.
Keep in mind that there is a large performance variation from unit to
Hello Javier,
I have a couple from that last Ebay lot , and the phase noise/spurs are so bad
on these that I figured the 10MHz must have been generated by a DDS. I posted
the phase noise and ADEV plots of this unit to this list earlier this year.
bye,
Said
Sent From iPhone
On Jun 3, 2012, at
Hi, Said,
I think that all of the last cheap ebay lot are of the second variety
(60MHz osc + 5.3125MHz DDS, very narrow tuning range through serial port
message). I remember your phase noise and adev plots on them. But I
don't know if the first variety (the ones with a 55MHz or so crystal
Hi
I think that if you switch to an averaging of a few seconds from per pixel
the plot of frequency difference will look a bit different. The phase
perturbations from DDS will still be there, and they are an issue. They just
many not be as dramatic as that plot implies.
Bob
On Jun 3, 2012,
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