[time-nuts] Very stable synthesizer, alternative to PTS(Programmed Test Sources) x10 or 040?

[Ed Palmer]

In 2002, this document:

THE CRYSTAL OSCILLATOR CHARACTERIZATION FACILITY AT THE AEROSPACE 
CORPORATION
http://www.pttimeeting.org/archivemeetings/2002papers/paper32.pdf

stated:

"The Programmed Test Sources, Inc. PTS model #250M6NIGSX-51 low-noise 
frequency synthesizer is
used to offset the frequency reference to obtain the desired beat 
frequency. In our previous system, we
used a Fluke 6160B frequency synthesizer, since the Fluke 6160B 
frequency synthesizer had the lowest
noise contribution of all the frequency synthesizers on the market at 
that time.  The reason for having the
low-noise frequency synthesizer is the synthesizer  noise contributions 
to the system noise-floor.
Unfortunately, Fluke has discontinued manufacturing and maintaining this 
synthesizer. Therefore, we
looked at the new synthesizers on the market and found that the PTS 
synthesizer was the closest to the
Fluke 6160B frequency synthesizer in terms of noise floor. "

Sounds like a working 6160B would be a nice thing to have. 
Unfortunately, it's too large for my already overcrowded lab. :-(

Ed


On 7/8/2013 3:44 AM, Anders Time wrote:
> I have been looking around for a very stable synthesizer(<E-12 at 1s adev).
> The only really good information that I have found is febo.com´s
> measurements on the PTS synthesizers(http://www.febo.com/pages/pts_synth/).
> Is there any other really good alternatives to the PTS synthesizers? DDS?
> HP?
> Best Regards
> Anders