Hi all:
It seems a little crass that my first post is a "for sale",
but I just put my Hewlett Packard HP 59309A HP-IB Digital Clock
on sale on eBay, Item number: 150208750512
Sincerely
/blair
Be a better
Sometimes, rightly or wrongly, phase noise in the systems I work with are
specified down to as close as 1 Hz from the carrier where the carrier may be
around 30 GHZ. Some of it is a leftover from older satellite systems with
real low data rates where the close in phase noise was considered
signific
> But would I be too simple minded to suggest that maybe some form
> of A/D PC/workstation input device with high dynamic range and decent
> sample rate (certainly available in high end audio stuff to 192 KHz)
> would be the logical vehicle for close in measurement in a quadrature
> locked P
Hi,
this contest is a bit late,
surely there are thousands of products developed over the last 20 years
that have all but exhausted the possibilities for such a product.
The "best" clock that I have is a Swiss made analogue quartz clock.
It bears the brand "Swiss Army", it is a travel alarm clock a
David I. Emery wrote:
> Spectrum analyzer front ends often either have a blocking
> capacitor (to protect the mixer from DC) or don't.The kind that
> don't usually start to roll off pretty significantly below 10 KHz, and
> are typically spec'd only to 9 KHz. I suppose if one wants to li
On Mon, Jan 21, 2008 at 01:18:15PM -0800, Matt Ettus wrote:
> On Jan 21, 2008 12:41 PM, John Miles <[EMAIL PROTECTED]> wrote:
> >
> > > John,
> > >
> > > I'm a little confused as to what you are suggesting. An 8662A is
> > > about $1500, and the 11729C is about $3k. What would I get for $25?
> >
At 04:57 PM 1/21/2008, you wrote:
> > 3562's or 3563's are not expensive.
>
>Yep... I went over to a local fellow's house the other day to buy a 3561A he
>had for sale, and he talked me into taking his 3562A as well. Both were
>cheap to acquire, and they're both good analyzers, but neither of them
John Miles wrote:
> snip ---
>
> It's true that the HP 8590s are among the noisiest spectrum analyzers out
> there, but the difference between the phase-noise floors of an 8596E and an
> 8560E is only about 20-25 dB. The difference in cost is several thousand
> dollars. If you invest in
> 3562's or 3563's are not expensive.
Yep... I went over to a local fellow's house the other day to buy a 3561A he
had for sale, and he talked me into taking his 3562A as well. Both were
cheap to acquire, and they're both good analyzers, but neither of them are
interesting by current performance
3562's or 3563's are not expensive.
John
At 04:18 PM 1/21/2008, you wrote:
>On Jan 21, 2008 12:41 PM, John Miles <[EMAIL PROTECTED]> wrote:
> >
> > > John,
> > >
> > > I'm a little confused as to what you are suggesting. An 8662A is
> > > about $1500, and the 11729C is about $3k. What would I
Here are the final details of the competition IEEE Spectrum announced in
November:
Competition Description:
IEEE Spectrum, the magazine of the Institute of Electrical and Electronic
Engineers, is sponsoring a contest to build the ideal digital clock -- one
that is attractive, interesting, fun
> > Take an hour and look through this HP app note (large file, but
> only about
> > 50 pages):
> > http://www.thegleam.com/ke5fx/gpib/5952-8286E.pdf
> >
> > It is not all that specific to the 11729B/C despite making frequent
> > references to it.
>
> Makes sense now. One problem -- the 8596E onl
On Jan 21, 2008 12:41 PM, John Miles <[EMAIL PROTECTED]> wrote:
>
> > John,
> >
> > I'm a little confused as to what you are suggesting. An 8662A is
> > about $1500, and the 11729C is about $3k. What would I get for $25?
>
> The parts needed to implement Wenzel's app note:
> http://www.wenzel.com
> > As a more-concrete answer to your question, since you mentioned
> a need for
> > coverage into the 6-GHz region, an 11729B/C and 8662A would
> actually be a
> > good choice. Together they'll still be much cheaper than the 8561E I'd
> > recommend otherwise. Figure $2500 at most for the 8662A
> John,
>
> I'm a little confused as to what you are suggesting. An 8662A is
> about $1500, and the 11729C is about $3k. What would I get for $25?
The parts needed to implement Wenzel's app note:
http://www.wenzel.com/documents/measuringphasenoise.htm
> I don't know exactly what is involved wi
On Jan 21, 2008 12:09 PM, John Miles <[EMAIL PROTECTED]> wrote:
>
> > Still, you should keep what you already have, and add a quadrature PLL and
> > LNA to it.
>
> As a more-concrete answer to your question, since you mentioned a need for
> coverage into the 6-GHz region, an 11729B/C and 8662A woul
Matt
It depends on what you want to measure. If all you want to do is
measure the relatively close-in phase noise of (say) a single-loop PLL,
then an 8560 is fine - I know, because that's what I used for some time.
But if you want to measure the noise floor of a VCO, PLL or other
source the
On Jan 21, 2008 11:44 AM, John Miles <[EMAIL PROTECTED]> wrote:
> After working with a quadrature PLL/LNA, I feel very strongly that anyone
> who's serious about PN measurement should go this route. I wasted a lot of
> time myself, sitting around wishing I could afford a quieter spectrum
> analyze
> Still, you should keep what you already have, and add a quadrature PLL and
> LNA to it.
As a more-concrete answer to your question, since you mentioned a need for
coverage into the 6-GHz region, an 11729B/C and 8662A would actually be a
good choice. Together they'll still be much cheaper than
> I am considering getting a new spectrum analyzer so I can make better
> phase noise measurements than with my 8596E. I've looked at the 8566B
> and the 8562 and 8563 since I need coverage to at least 6 GHz. The
> 8566 is huge and ancient, though, so I think I'm leaning away from
> that one. An
I am considering getting a new spectrum analyzer so I can make better
phase noise measurements than with my 8596E. I've looked at the 8566B
and the 8562 and 8563 since I need coverage to at least 6 GHz. The
8566 is huge and ancient, though, so I think I'm leaning away from
that one. Anybody have
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