Have you used the Mouser part you listed? When you look at the spec
sheet it only shows 8 of the 15 pins installed in the connector.
https://www.mouser.com/datasheet/2/123/307-030-520-201_-_EDAC_Card_Edge_Connector-1653445.pdf
I have used this, and it show all the pins installed:
https://www
I just ordered some from Mouser in November, this is it:
https://www.mouser.com/ProductDetail/587-305-50-030
They list 41 in stock, for 1 to 9 the price is $8.43
Robert
On 04/08/2020 09:39 PM, Frank O'Donnell wrote:
I recently bought an HP10811A oscillator on eBay, only belatedly
realizing t
On 4/10/20 2:31 PM, Richard (Rick) Karlquist wrote:
At this time, I will give my usual speech about IMHO the fact that
since the invention of the DDS on a chip, EFC should no longer be used
for high performance oscillators.
Rick N6RK
Yes..
The only case I can think of is where the osc
On Thu, April 9, 2020 11:20 pm, Hal Murray wrote:
> Suppose I measure the edge to edge times and make a histogram.
How precisely can you measure the period. You would be using the rising
edge as start time and stop time, with no dead time, i.e. measure the time
of every period?
> Can I get jitte
On 4/10/2020 12:51 PM, ed breya wrote:
looking for. Also, moving the frequency far away from "ideal" changes
the tempco, since it's no longer at the ideal center of the turnover
point. In reality, this may not matter much, since after all these
years, things may have drifted and aged way ou
This sort of behavior shouldn't be surprising at all. When you change
the EFC (especially by a fairly large amount to move it a few Hz), you
change the (transient and steady-state) operating points of the
circuitry, so it has to drift gradually to stabilize at the new
conditions. The effects ma
Hi
EFC changes by themselves are pretty much instantaneous. If you are seeing
post tune drift, it likely is from the pot or from things like a temperature
change
(or draft) when you go near the part.
If your grounds are a bit intertwined, the change in oven current will give you
a delta voltage
I have a few HP10811 and was thinking of making an interesting setup: A setup
where frequency is purposely offset by user defined amount by few Hz, and make
it selectable.
Under normal setup, I would use a potentiometer and EFC control the frequency.
When I adjust EFC, the frequency immediate
Hi
Back quite a while ago, I went back and visited my buddies / ex-coworkers
at Motorola Franklin Park ( = the Motorola crystal / oscillator group). Based
on
my past experience with the yields on a “quartz bar to oscillator” fab process,
I asked:
How do you build a “6 sigma” oscill
On 4/10/2020 5:47 AM, Bob kb8tq wrote:
Hi
It is not at all uncommon to …. errr …. make that decision, regardless
of what the customer might think about it :)
Even with that sort of decision, the whole process of measuring a one
sigma and multiplying by 6 depends very much on the underlying
pr
Hi
It is not at all uncommon to …. errr …. make that decision, regardless
of what the customer might think about it :)
Even with that sort of decision, the whole process of measuring a one
sigma and multiplying by 6 depends very much on the underlying
processes (noise or maybe something else ….)
I once got into that "p-p" business and it was like pulling teeth to get
the customer
even semi-reasonable. He finally agreed to stipulate that the p-p value
could be
construed as 6 X the rms value.
Dana
On Fri, Apr 10, 2020 at 6:57 AM Bob kb8tq wrote:
> Hi
>
> Which of the multitude of defin
Hi
Which of the multitude of definitions are we talking about?
One very common definition looks at peak to peak jitter and does
not care about the center. Another looks at +/- peak to edge and
then uses the greater of the two numbers. Other definitions look
at RMS jitter and generally don’t car
IIRC the latter
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of Dana
Whitlow
Sent: 10 April 2020 11:06
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Phase noise confusion II
Question about definition of jitter:
Question about definition of jitter: Is it the variation in
pulse-to-pulse spacing, or is it
the variation in pulse positions with respect to a jitter-free waveform?
Dana
On Thu, Apr 9, 2020 at 11:21 PM Hal Murray wrote:
>
> rich...@karlquist.com said:
> > There is always an implied clock re
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