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 in
place of the voltage-to-frequency converter in the diagram above. A DAQ
is a multifaceted data acquisition system,
I have all this stuff. I really don't want to open this thing up, and my
oscillator trouble shooting skills are not that great.
I think you have several choices:
1) Double check all the pins going into the hockey-puck. (Maybe something on
the board has died/broke.)
2)
Steve,
I was looking for insight. For instance, is there a power up sequence for
the +5 +12V? Anything I can look at before I dive in to the can?
This is not the first HP oscillator I have that has gone dead on me. I have
a 10811 that went south on me a few years back. This is just getting
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. And as I said in one of my previous emails, I've seen amateurs
run circles around the professionals, and those professional
Bob,
I do not know about the E1938A but I have repaired 10811's utilizing the
excellent troubleshooting section of the 10811 manual. If you are an EE and
are comfortable with small components, the 10811 should be no problem.
I do not know of a similar manual for the E1938A.
Joe
-Original
Hi
The use of femtoseconds come from the AVAR it's self. It was originally defined
by time domain people. It's delineated by a Tau dimensioned in seconds. The
time domain noise that's 1x10^-12 or 1x10^-15 down at one second does indeed
have units of 1x10^-12 or 1x10^-15 seconds.
As with any
Hi
No nothing would suggest a power supply to me. I'd certainly check all the
power and ground pins right up front.
Bob
On Jun 20, 2010, at 9:53 AM, Robert Benward wrote:
Steve,
I was looking for insight. For instance, is there a power up sequence for
the +5 +12V? Anything I can look
Hi Joe,
I may have no alternative. I have the manuals, I'll start taking it apart!
I am very comfortable with small components, it's repairing oscillators I
have the problem with. But I'll give it a try. Schematics for the osc and
main board, and board layout for the main board, are
Bob
Boy, you guys are really making me read a lot. I'm digesting Wiki right
now.
I see tau, but does identifying a tau of 1E-14 allow you to say you are
locked to 10fs? The smallest tau I've seen in my E1938 collection is 1E-1.
Bob
- Original Message -
From: Bob Camp
To:
Hi,
I'm trying to compare a various methods of time and frequency
comparision: GPS common-view, GPS carrier-phase and GPS TWSTT. Does
anyone know what is the floor level for these methods in AVAR?
Filip.
___
time-nuts mailing list --
Bob II
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 called experts do not believe or understand why, does
not change that proven fact.
*
and the longer story for those that have nothing
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
Robert Benward wrote:
Bob
Boy, you guys are really making me read a lot. I'm digesting Wiki right
now.
I see tau, but does identifying a tau of 1E-14 allow you to say you are
locked to 10fs? The smallest tau I've seen in my E1938 collection is 1E-1.
Bob
tau is the time over which the
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
On 06/20/2010 11:53 PM, jimlux wrote:
Robert Benward wrote:
Bob
Boy, you guys are really making me read a lot. I'm digesting Wiki
right now.
I see tau, but does identifying a tau of 1E-14 allow you to say you
are locked to 10fs? The smallest tau I've seen in my E1938 collection
is 1E-1.
Bob
Bob,
On 21 June 2010 01:53, Robert Benward rbenw...@verizon.net wrote:
Steve,
I was looking for insight. For instance, is there a power up sequence for
the +5 +12V? Anything I can look at before I dive in to the can?
I don't know the device but I seriously doubt there is a sequence for
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
Hi
While the units are more properly femto seconds/ second you do indeed see 1s
AVAR plots labeled in fS.
Bob
On Jun 20, 2010, at 6:25 PM, Magnus Danielson wrote:
On 06/20/2010 11:53 PM, jimlux wrote:
Robert Benward wrote:
Bob
Boy, you guys are really making me read a lot. I'm digesting
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
Well so much for my short 'berry' answers, that did not last long, sorry
berry readers.
You think you are tired of hearing the same ol repeated stuff over and over
and over ...,
Think about how tired I am of needing to repeat it.
The simple TPLL works good enough to measure any OCXO that
IMHO, this comment is totally uncalled for, regardless...
Also, it is unsigned - poor etiquette.
John Allen -
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of gandal...@aol.com
Sent: Sunday, June 20, 2010 4:07 PM
To: time-nuts@febo.com
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
24 matches
Mail list logo
