measurement
Sent: Sunday, June 20, 2010 2:00 AM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob,
Can I answer this one.
On 20 June 2010 04:36, Robert Benward rbenw...@verizon.net wrote:
Warren,
I was responding to ke5fx comment using a 12-bit, 480-Hz serial DAQ
Nigel,
Thanks for letting us have your name.
On 21 June 2010 10:05, gandal...@aol.com wrote:
Warren
Your stock answer of claiming that everyone and his granny is missing the
point is wearing a bit thin, and despite your suggestion I have not missed
anything either and that includes John's
On 21 June 2010 10:49, Chuck Harris cfhar...@erols.com wrote:
No disrespect to you or John intended, but that is a data set of one
experiment.
We used to call that a High School Proof.
What is not said here is that John spent a month testing the TPLL with
a variety of different sources just to
On 21 June 2010 11:49, Chuck Harris cfhar...@erols.com wrote:
If there have been an infinite number of tests done, and all are verified as
correct, we have a pretty fair idea that the next test done will also be
correct...
but the verification is important... without it we cannot know for
There is a fairly detailed block schematic that has been posted, even
a photo of the proto BB just to show how simple it is. Perhaps a full
component level schematic will surface sometime.
I think that the math that is needed to describe this TPLL will have
to come from a third-party if that is
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob
Don't know if I can explain it to you, I'm not so good at explaining,
I'll give it *ONE* try.
Example with some random picked numbers (JUST TO SHOW THE MAIN POINTS).
I tried,
All information and test
the method
supports the claim (of fs timing).
Bob
- Original Message -
From: Steve Rooke
To: Discussion of precise time and frequency measurement
Sent: Sunday, June 20, 2010 2:00 AM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob,
Can I answer
***
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Robert Benward rbenward at verizon.net
Sun Jun 20 14:46:09 UTC 2010
Steve,
I am a professional engineer, but in this arena I am an amateur. That is
why I'm asking the questions, not to put down, but to understand some of the
claims made
GandalfG8 Posted:
Snake Oil anyone?
I nice short response,
but
it shows missed the MAJOR difference. You need to see:
http://www.thegleam.com/ke5fx/tpll.htm
ws
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
In a message dated 20/06/2010 22:11:51 GMT Daylight Time,
warrensjmail-...@yahoo.com writes:
I nice short response,
but
it shows missed the MAJOR difference. You need to see:
http://www.thegleam.com/ke5fx/tpll.htm
-
Warren
Your stock answer of claiming that
WarrenS wrote:
GandalfG8 Posted:
Snake Oil anyone?
I nice short response, but it shows missed the MAJOR difference. You
need to see:
http://www.thegleam.com/ke5fx/tpll.htm
ws
No disrespect to you or John intended, but that is a data set of one experiment.
We used to call that a High
On 06/21/2010 12:49 AM, Chuck Harris wrote:
WarrenS wrote:
GandalfG8 Posted:
Snake Oil anyone?
I nice short response, but it shows missed the MAJOR difference. You
need to see:
http://www.thegleam.com/ke5fx/tpll.htm
ws
No disrespect to you or John intended, but that is a data set of one
Magnus Danielson wrote:
On 06/21/2010 12:49 AM, Chuck Harris wrote:
WarrenS wrote:
GandalfG8 Posted:
Snake Oil anyone?
I nice short response, but it shows missed the MAJOR difference. You
need to see:
http://www.thegleam.com/ke5fx/tpll.htm
ws
No disrespect to you or John intended, but
Hi
Schematics of each of the various implementations tired would be nice. That
would allow others to implement duplicates and see what happened. Without
schematics only approximations can be implemented and analyzed. That generally
opens up more issues than it addresses. The nature of the
would of ever started this project, let alone
try and tell ANYONE about it.
Have fun and do try and do what you enjoy or at least enjoy what you're
doing.
I am.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
GandalfG8 at aol.com GandalfG8 at aol.com
Sun Jun
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
In a message dated 20/06/2010 18:47:41 GMT Daylight Time,
warrensjmail-...@yahoo.com writes:
Short summery for the Berry readers:
The simple TPLL BB works fine and is better than any OXCO that it has been
used
On 21 June 2010 08:07, gandal...@aol.com wrote:
In a message dated 20/06/2010 18:47:41 GMT Daylight Time,
warrensjmail-...@yahoo.com writes:
Short summery for the Berry readers:
The simple TPLL BB works fine and is better than any OXCO that it has been
used with.
The fact that some so
?
ws
***
[time-nuts] Advantages Disadvantages of the TPLL Method
Robert Benward rbenward at verizon.net
Sat Jun 19 03:18:05 UTC 2010
Warren,
Is there not a lower limit to how much you can average? Yes, it's the sqrt
of the number of samples, but doesn't noise,
hardware
On 06/19/2010 12:49 AM, WarrenS wrote:
Say you have a nice logic gate with 1 ns delay
If you make it all nice and clean, and repeatable such as constant PS,
rise time etc.
Then one can get repeatable results say 100 times better from cycle to
cycle in the short term.
so down to 10ps repeatable.
Hi
Since ADEV is a measurement of noise, you want to be very careful about just
which noise you keep and which noise you throw away.
Bob
On Jun 19, 2010, at 7:06 AM, Magnus Danielson wrote:
On 06/19/2010 12:49 AM, WarrenS wrote:
Say you have a nice logic gate with 1 ns delay
If you make
measurement
time-nuts@febo.com
Sent: Saturday, June 19, 2010 3:27 AM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob
Don't know if I can explain it to you, I'm not so good at explaining,
I'll give it *ONE* try.
Example with some random picked numbers (JUST TO SHOW
, IT IS A GOOD THING.
And the fact that averaging by intigration at tau0 to get rid of the
noise_Frequencies above Tau0 is not as bad thing as some have clamed in the
past but a GOOD thing
ws
*
[time-nuts] Advantages Disadvantages of the TPLL Method
Magnus Danielson magnus
[time-nuts] Advantages Disadvantages of the TPLL Method
Robert Benward rbenward at verizon.net
Sat Jun 19 16:36:50 UTC 2010
Warren,
I was responding to ke5fx comment using a 12-bit, 480-Hz serial DAQ in
place of the voltage-to-frequency converter in the diagram above. A DAQ
is a multifaceted data
-
From: WarrenS
To: Discussion of precise time and frequency measurement
Sent: Saturday, June 19, 2010 2:07 PM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob
I tried, (more than once), and now we are heading way off subject.
I should of known better
Bob,
I might shed some light on this topic, but my comments apply only
to a few measurements made in my shop, not part of any PLL scheme.
My intent was to determine the apparent noise floor of a Minicircuits
SYPD-2 phase detector; a low offset, low conversion loss, DBM.
The SYPD-2 IF port was
and frequency measurement
Sent: Saturday, June 19, 2010 5:08 PM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob,
I might shed some light on this topic, but my comments apply only
to a few measurements made in my shop, not part of any PLL scheme.
My intent
it.
How can one go about deciding it is something is useful for them without
knowing what the advantages and disadvantages are?
ws
***
*
[time-nuts] Advantages Disadvantages of the TPLL Method
Charles P. Steinmetz charles_steinmetz at lavabit.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, June 18, 2010 3:58 PM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Charles posted
its operation needs to be characterized if technically oriented folks are
to be expected to take
has jitter several of orders of magnitude greater?
Bob
*
[time-nuts] Advantages Disadvantages of the TPLL Method
Robert Benward rbenward at verizon.net
Fri Jun 18 20:23:40 UTC 2010
Previous message: [time-nuts] Advantages Disadvantages of the TPLL Method
Messages sorted
Warren wrote:
you are greatly over estimating my abilities
Probably true, even of my estimation.
Best regards,
Charles
==
Better to remain silent and be thought a fool, than to speak up and
remove all doubt.
Attributed to Mark Twain, though not verified
PM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob posted
can you explain it to me?
Don't know, I'll give it ONE try.
I'm not so good at explaining, but it is pretty basic if one does not start assuming that it can not be done at the
start.
It is mostly about
Sent: Thu, June 17, 2010 1:29:57 AM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Charles
I'm curious how you determined that the oscillators are being held to
within femtoseconds of each other.
I done it several ways including measuring the PD output.
You seem
measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Hi Warren, how do I change the com port in Lady Heather software.
Thank You
Best regards,
Sal C. Cornacchia
Electronic RF Microwave Engineer (Ret.)
From: WarrenS warrensjmail
, June 17, 2010 12:10:03 PM
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Hi
A handy reference on Lady Heather is here:
http://www.thegleam.com/ke5fx/heather/readme.htm
To change the com to port 3 you launch it with a /3 on the command line.
In my case the Target line
Hi
The gotcha is that the injection gain is phase angle dependent.
Bob
On Jun 16, 2010, at 1:57 AM, Magnus Danielson wrote:
On 06/16/2010 05:45 AM, Charles P. Steinmetz wrote:
Warren wrote:
Charles posted:
but the locked frequency will be different from both oscillators'
free-running
In my world, successive gains multiply, not add.
A series of three gains of 10 gives a gain of 1000, not 30.
What am I missing?
Bill Hawkins
-Original Message-
From: Magnus Danielson
Sent: Wednesday, June 16, 2010 12:58 AM
What you get is a scale error. Consider that you have an
buffer to be save to keep the gain errors
below 10%.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Bob Camp lists at rtty.us
Wed Jun 16 11:34:27 UTC 2010
Hi
The gotcha is that the injection gain is phase angle dependent.
Bob
**
On Jun 16, 2010
...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of WarrenS
Sent: Wednesday, June 16, 2010 11:46 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob posted
The gotcha is that the injection gain is phase angle
On 06/16/2010 04:30 PM, Bill Hawkins wrote:
In my world, successive gains multiply, not add.
A series of three gains of 10 gives a gain of 1000, not 30.
What am I missing?
They are parallel.
Cheers,
Magnus
___
time-nuts mailing list --
On 06/16/2010 06:16 PM, Bob Camp wrote:
Hi
If the oscillator you have happens to injection lock at 90 degrees, or quite
near it, then that's not going to help. If the oscillator you have likes to
lock at 21 degrees then it will help you out. The angle varies device to
device.
If the injection
Warren wrote:
Charles Posted:
How much EFC is required depends, in part, on the strength of the pulling.
There are three varying inputs.
NOT at ALL what my test have shown so I guess we do NOT agree on this.
The point you missed, is only the EFC is changing significantly
because of the
satisfaction, all the hundreds of test that show no
significant effect of so many different things.
For an independent test that may help you with things you missed see:
http://www.ke5fx.com/tpll.htm
ws
***
[time-nuts] Advantages Disadvantages of the TPLL Method
Charles P. Steinmetz
.
There are plenty of places that one of the TPLL methods well give the best
overall solution.
ws
***
Bruce
[time-nuts] Advantages Disadvantages of the TPLL Method
Bruce Griffiths bruce.griffiths at xtra.co.nz
WarrenS wrote:
Long explanations, cause I try to explain
***
Bruce
[time-nuts] Advantages Disadvantages of the TPLL Method
Bruce Griffiths bruce.griffiths at xtra.co.nz
WarrenS wrote:
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG or misleading
Magnus Posted:
EFC linearity
for
it,
No argument, and I do know how to test for it, I also know how to do
integrate and I know how to add 2 + 2.
What I do not know how to do is to get a simple, basic, obvious point
across.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Bob Camp lists at rtty.us
Tue
Warren wrote:
The thing that you (and maybe Adler?) are missing is that effect
goes away when the two frequencies ARE exactly the same.
I'm not talking close, I'm talking the exact same freq with phase
held in quadrature within single digit femtoseconds.
BIG difference, Once that is
and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob posted
Since it's dependent both on frequency offset and phase angle,
When there is no freq offset as in the wsTPLL and no changing of phase
angle,
I'm saying that injection locking no longer applies
Charles posted:
but the locked frequency will be different from both oscillators'
free-running frequency and
the EFC will not correctly indicate the test oscillator deviation
because it isn't the only control input in the system.
Good point and No argument (except for the deviation part)
noise
test set.
-- john, KE5FX
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on
Behalf Of Bob Camp
Sent: Tuesday, June 15, 2010 4:48 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages
of ways of checking for
it,
No argument, and I do know how to test for it, I also know how to do
integrate and I know how to add 2 + 2.
What I do not know how to do is to get a simple, basic, obvious point
across.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Bob Camp
On 06/15/2010 03:28 PM, WarrenS wrote:
Bruce posted
But Adler's equation indicates that an oscillator is much more
susceptible to injection effects when the injected signal frequency is
very close to the oscillator frequency.
No argument,
BUT
The thing that you (and maybe Adler?) are missing
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob posted:
If the two oscillators are locked by injection locking, small changes in the
EFC is no longer needed to keep them in phase / frequency alignment
box.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Magnus Danielson magnus at rubidium.dyndns.org
Tue Jun 15 17:53:49 UTC 2010
On 06/15/2010 03:28 PM, WarrenS wrote:
Bruce posted
But Adler's equation indicates that an oscillator is much more
susceptible
Hi Warren,
On 06/15/2010 08:49 PM, WarrenS wrote:
Magnus posted a bunch of good stuff,
Neither. It's a characteristic, it needs to be analyzed. If the DUT is
very sensitive, then additional care may be taken or maybe it just isn't
a very good solution.
We have little disagreements for the
I promised myself I would not get into this any more, but here we go again...
WarrenS warrensjmail-...@yahoo.com wrote:
Charles posted:
but the locked frequency will be different from both oscillators'
free-running frequency and
the EFC will not correctly indicate the test oscillator
: Tuesday, June 15, 2010 1:37 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Bob posted:
If the two oscillators are locked by injection locking, small changes in the
EFC is no longer needed to keep them in phase
Warren wrote:
Charles posted:
but the locked frequency will be different from both oscillators'
free-running frequency and
the EFC will not correctly indicate the test oscillator deviation
because it isn't the only control input in the system.
Good point and No argument (except for the
at large taus.
So other things are held constant enough that their effects are kept below
any ref Osc effects.
But no mater who is correct, It does work, which is the more important thing
at this stage.
ws
***
time-nuts] Advantages Disadvantages of the TPLL Method
Charles P. Steinmetz
On 06/16/2010 05:45 AM, Charles P. Steinmetz wrote:
Warren wrote:
Charles posted:
but the locked frequency will be different from both oscillators'
free-running frequency and
the EFC will not correctly indicate the test oscillator deviation
because it isn't the only control input in the
Steve,
On 06/14/2010 04:49 AM, Steve Rooke wrote:
On 14 June 2010 10:46, Magnus Danielsonmag...@rubidium.dyndns.org wrote:
Still puts it in the mid-tau range as a method. The useful range and
precision of a particular implementation of the method will vary.
By putting a GPSDO in the usual
Thanks Magnus!
On 14 June 2010 20:45, Magnus Danielson mag...@rubidium.dyndns.org wrote:
Steve,
On 06/14/2010 04:49 AM, Steve Rooke wrote:
On 14 June 2010 10:46, Magnus Danielsonmag...@rubidium.dyndns.org
wrote:
Still puts it in the mid-tau range as a method. The useful range and
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG or misleading
Magnus Posted:
EFC linearity will remain an issue for analog oscillators.
The oscillator gain will differ depending on offset voltage and
temperature.
TRUE it is an issue, but somewhat
] Advantages Disadvantages of the TPLL Method
Steve Rooke sar10538 at gmail.com
Mon Jun 14 02:37:32 UTC 2010
Warren,
Penny dropped!
On 14 June 2010 05:29, WarrenS warrensjmail-one at yahoo.com wrote:
Magnus Posted
The TPLL is a mid-tau stability test, since it's sweet-spot is in the
0,1 - 1000 s range
WarrenS wrote:
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG or misleading
Magnus Posted:
EFC linearity will remain an issue for analog oscillators.
The oscillator gain will differ depending on offset voltage and
temperature.
TRUE it is an issue,
give the best
overall solution.
ws
***
[time-nuts] Advantages Disadvantages of the TPLL Method
Bruce Griffiths bruce.griffiths at xtra.co.nz
WarrenS wrote:
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG or misleading
Magnus
On 06/14/2010 06:13 PM, WarrenS wrote:
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG or misleading
Magnus Posted:
EFC linearity will remain an issue for analog oscillators.
The oscillator gain will differ depending on offset voltage and
temperature.
think.
ws
**
[time-nuts] Advantages Disadvantages of the TPLL Method
Magnus Danielson magnus at rubidium.dyndns.org
Mon Jun 14 22:25:11 UTC 2010
On 06/14/2010 06:13 PM, WarrenS wrote:
Long explanations, cause I try to explain, the best I can, when I say
something is WRONG
to believe that paper has not already been written,
But then it is hard for me to believe that the TPLL is not used more
often. There are plenty of places that one of the TPLL methods well
give the best overall solution.
ws
***
Bruce
[time-nuts] Advantages
Here are a couple of really good articles that describe many
methods of phase/frequency measurement, including TPLL.
You'll see some nice advantage/disadvantage lists in several
of these documents, which is why I'm posting the links.
Warren Bruce, please look at the first five documents at
Warren,
On 06/13/2010 05:45 AM, WarrenS wrote:
Thanks for the positive contrbution, A good example of one of the TPLL's
obvious disadvantages.
The simple cheap analog version of the TPLL is limited by it's need to
have a dedicated Ref OSC.
One way I have got around that problem, which would
Correlation-based phase noise measurements
http://www.femto-st.fr/~rubiola/pdf-others/correl-report.pdf
-- for John Miles
Practical Problems Involving Phase Noise Measurements
http://tycho.usno.navy.mil/ptti/ptti2001/paper42.pdf
-- also for John.
I've got these in my collection, but it
John,
On 06/13/2010 10:00 AM, John Miles wrote:
Correlation-based phase noise measurements
http://www.femto-st.fr/~rubiola/pdf-others/correl-report.pdf
-- for John Miles
Practical Problems Involving Phase Noise Measurements
http://tycho.usno.navy.mil/ptti/ptti2001/paper42.pdf
-- also for
-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Van Baak
Sent: Sunday, June 13, 2010 1:35 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Here are a couple of really good articles
[mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Van Baak
Sent: Sunday, June 13, 2010 1:35 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Here are a couple of really good articles that describe many
methods of phase
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of Steve Rooke
Sent: Sunday, June 13, 2010 5:17 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
Just to let you know that your link got busted by a line-wrap
somewhere so it is not clickable and has to be cut and pasted
into place.
I saw that. There is nothing I can do about it other than by using a url
shortener which I am reluctant to do because of the obfuscation and
potential
On 13/06/2010, Didier Juges did...@cox.net wrote:
I saw that. There is nothing I can do about it other than by using a url
shortener
You can hint to most email clients that you'd like lines unbroken,
using angle brackets
This may work...
: Re: [time-nuts] Advantages Disadvantages of the TPLL Method
On 13/06/2010, Didier Juges did...@cox.net wrote:
I saw that. There is nothing I can do about it other than
by using a
url shortener
You can hint to most email clients that you'd like lines
unbroken, using angle brackets
Magnus Posted
The TPLL is a mid-tau stability test, since it's sweet-spot is in the
0,1 - 1000 s range. Short-term is better handled in LPLL phase-noise
measurements.
Mostly agree, it is a mid-tau device, but also consider:
The simple TPLL can be used to find the 1ms to 10 ms ADEV as good
I went quickly thru Tom's reference list and was unable to fine anything
that had much if anything to do directly with the NIST, the NBS, or the
slightly modified ws TPLL method.
All of those papers seem to be about how to measure Phase noise, NOT
frequency stability, and from what I was able
Warren,
Penny dropped!
On 14 June 2010 05:29, WarrenS warrensjmail-...@yahoo.com wrote:
Magnus Posted
The TPLL is a mid-tau stability test, since it's sweet-spot is in the
0,1 - 1000 s range. Short-term is better handled in LPLL phase-noise
measurements.
Mostly agree, it is a mid-tau
On 14 June 2010 10:46, Magnus Danielson mag...@rubidium.dyndns.org wrote:
Still puts it in the mid-tau range as a method. The useful range and
precision of a particular implementation of the method will vary.
By putting a GPSDO in the usual place of the DUT and putting the 10811
in place of
subject: Advantages Disadvantages of the TPLL Method.
Here is a new and unique Idea that may be useful for many.
Rather than focusing on what some members may or may not already know,
or how good or bad one specific working BB configuration is.
How about focusing on what the TPLL method can
WarrenS wrote:
subject: Advantages Disadvantages of the TPLL Method.
Here is a new and unique Idea that may be useful for many.
Rather than focusing on what some members may or may not already know,
or how good or bad one specific working BB configuration is.
How about focusing on what the
On 06/12/2010 11:29 PM, Bruce Griffiths wrote:
WarrenS wrote:
subject: Advantages Disadvantages of the TPLL Method.
Here is a new and unique Idea that may be useful for many.
Rather than focusing on what some members may or may not already know,
or how good or bad one specific working BB
Magnus Danielson wrote:
On 06/12/2010 11:29 PM, Bruce Griffiths wrote:
WarrenS wrote:
subject: Advantages Disadvantages of the TPLL Method.
Here is a new and unique Idea that may be useful for many.
Rather than focusing on what some members may or may not already know,
or how good or bad one
Another disadvantage of the Tight PLL system that only applies to
multichannel systems is that a dedicated reference oscillator is
required for each channel.
i.e. for an N channel system N reference oscillators are required.
If correlation techniques were to be employed then an N channel system
Thanks for the positive contrbution, A good example of one of the TPLL's
obvious disadvantages.
The simple cheap analog version of the TPLL is limited by it's need to have
a dedicated Ref OSC.
One way I have got around that problem, which would not apply to all, is to
put the DUT unit as
WarrenS wrote:
Thanks for the positive contrbution, A good example of one of the
TPLL's obvious disadvantages.
The simple cheap analog version of the TPLL is limited by it's need to
have a dedicated Ref OSC.
One way I have got around that problem, which would not apply to all,
is to put
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