On 07/08/2013 07:55 AM, Ed Palmer wrote:
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
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I have a 6061A using an external frequency reference (Trimble Thunderbolt).
The 6061A is a fairly large and massive beast by today's standards.
Using the GPIB interface one could simulate the classic WWVB signal.
Maybe I could get my Oregon Scientific stuff to get the time right.
What is the difference between the A and B models?
--
Chuck Forsberg WA7KGX c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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