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TG

Tony Greene

Thu, Feb 27, 2014 11:35 PM

Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board.

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Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board. ____________________________________________________________ TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if5 Capture screenshots, upload images, edit and send them to your friends through IMs, post on Twitter®, Facebook®, MySpace™, LinkedIn® – FAST!

BL

Brian Lloyd

Fri, Feb 28, 2014 1:55 AM

And after all that, STILL no one has been able to answer the question,
"Is there a problem that must be solved?" Oh, lots of supposition, rules of
thumb, boatloads of experience, etc., but still no determination that
something really needs to be solved.

One of the interesting things that came from building the internet protocol
suite was a whole bunch of, "well, let's just try it and see," that
resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem
because it just doesn't happen."

I would be willing to lay a fiver that this is one of those situations.

--
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian@lloyd.com
+1.916.877.5067

And after all that, *STILL* no one has been able to answer the question, "Is there a problem that must be solved?" Oh, lots of supposition, rules of thumb, boatloads of experience, etc., but still no determination that something really needs to be solved. One of the interesting things that came from building the internet protocol suite was a whole bunch of, "well, let's just try it and see," that resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem because it just doesn't happen." I would be willing to lay a fiver that this is one of those situations. -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 brian@lloyd.com +1.916.877.5067

PS

paul swed

Fri, Feb 28, 2014 3:03 AM

Looks like I win the fiver.
Johns created a great board for the 5370.
However you can't just turn the 5370 off as this lazy person is used to.
Plus I really have to say after a full day of time-nuttery I won't remember
to shut the linux down.
So thats the need good old shutdown controlled by the power off button.
But as Tom says please send the thoughts to John.
Regards
Paul
WB8TSL

On Thu, Feb 27, 2014 at 8:55 PM, Brian Lloyd brian@lloyd.com wrote:

And after all that, STILL no one has been able to answer the question,
"Is there a problem that must be solved?" Oh, lots of supposition, rules of
thumb, boatloads of experience, etc., but still no determination that
something really needs to be solved.

One of the interesting things that came from building the internet protocol
suite was a whole bunch of, "well, let's just try it and see," that
resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem
because it just doesn't happen."

I would be willing to lay a fiver that this is one of those situations.

--
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian@lloyd.com
+1.916.877.5067

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
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and follow the instructions there.

Looks like I win the fiver. Johns created a great board for the 5370. However you can't just turn the 5370 off as this lazy person is used to. Plus I really have to say after a full day of time-nuttery I won't remember to shut the linux down. So thats the need good old shutdown controlled by the power off button. But as Tom says please send the thoughts to John. Regards Paul WB8TSL On Thu, Feb 27, 2014 at 8:55 PM, Brian Lloyd <brian@lloyd.com> wrote: > And after all that, *STILL* no one has been able to answer the question, > "Is there a problem that must be solved?" Oh, lots of supposition, rules of > thumb, boatloads of experience, etc., but still no determination that > something really needs to be solved. > > One of the interesting things that came from building the internet protocol > suite was a whole bunch of, "well, let's just try it and see," that > resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem > because it just doesn't happen." > > I would be willing to lay a fiver that this is one of those situations. > > -- > Brian Lloyd, WB6RQN/J79BPL > 706 Flightline Drive > Spring Branch, TX 78070 > brian@lloyd.com > +1.916.877.5067 > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

BL

Brian Lloyd

Fri, Feb 28, 2014 3:29 AM

On Thu, Feb 27, 2014 at 9:03 PM, paul swed paulswedb@gmail.com wrote:

Looks like I win the fiver.

Really? You power-failed it and corrupted the file system?

Johns created a great board for the 5370.
However you can't just turn the 5370 off as this lazy person is used to.

Really? You tried it and screwed up the file system?

Plus I really have to say after a full day of time-nuttery I won't remember
to shut the linux down.
So thats the need good old shutdown controlled by the power off button.
But as Tom says please send the thoughts to John.
Regards
Paul
WB8TSL

--
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian@lloyd.com
+1.916.877.5067

On Thu, Feb 27, 2014 at 9:03 PM, paul swed <paulswedb@gmail.com> wrote: > Looks like I win the fiver. > Really? You power-failed it and corrupted the file system? > Johns created a great board for the 5370. > However you can't just turn the 5370 off as this lazy person is used to. > Really? You tried it and screwed up the file system? > Plus I really have to say after a full day of time-nuttery I won't remember > to shut the linux down. > So thats the need good old shutdown controlled by the power off button. > But as Tom says please send the thoughts to John. > Regards > Paul > WB8TSL > > -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 brian@lloyd.com +1.916.877.5067

BC

Bob Camp

Fri, Feb 28, 2014 3:34 AM

Hi

I realize this is a bit off the main topic of … but here goes:

Is there any performance data on how the card does with a 5370A and / or a 5370B compared to the original CPU on the exact same box? Put another way - does the counter get better or worse with the new card? I realize that an A will do some things with B firmware, that’s not the question I’m asking. I’m looking for A to A or B to B timing data.

Bob

On Feb 27, 2014, at 10:03 PM, paul swed paulswedb@gmail.com wrote:

Looks like I win the fiver.
Johns created a great board for the 5370.
However you can't just turn the 5370 off as this lazy person is used to.
Plus I really have to say after a full day of time-nuttery I won't remember
to shut the linux down.
So thats the need good old shutdown controlled by the power off button.
But as Tom says please send the thoughts to John.
Regards
Paul
WB8TSL

On Thu, Feb 27, 2014 at 8:55 PM, Brian Lloyd brian@lloyd.com wrote:

And after all that, STILL no one has been able to answer the question,
"Is there a problem that must be solved?" Oh, lots of supposition, rules of
thumb, boatloads of experience, etc., but still no determination that
something really needs to be solved.

One of the interesting things that came from building the internet protocol
suite was a whole bunch of, "well, let's just try it and see," that
resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem
because it just doesn't happen."

I would be willing to lay a fiver that this is one of those situations.

--
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian@lloyd.com
+1.916.877.5067

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

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Hi I realize this is a bit off the main topic of … but here goes: Is there any performance data on how the card does with a 5370A and / or a 5370B compared to the original CPU on the exact same box? Put another way - does the counter get better or worse with the new card? I realize that an A will do some things with B firmware, that’s not the question I’m asking. I’m looking for A to A or B to B timing data. Bob On Feb 27, 2014, at 10:03 PM, paul swed <paulswedb@gmail.com> wrote: > Looks like I win the fiver. > Johns created a great board for the 5370. > However you can't just turn the 5370 off as this lazy person is used to. > Plus I really have to say after a full day of time-nuttery I won't remember > to shut the linux down. > So thats the need good old shutdown controlled by the power off button. > But as Tom says please send the thoughts to John. > Regards > Paul > WB8TSL > > > On Thu, Feb 27, 2014 at 8:55 PM, Brian Lloyd <brian@lloyd.com> wrote: > >> And after all that, *STILL* no one has been able to answer the question, >> "Is there a problem that must be solved?" Oh, lots of supposition, rules of >> thumb, boatloads of experience, etc., but still no determination that >> something really needs to be solved. >> >> One of the interesting things that came from building the internet protocol >> suite was a whole bunch of, "well, let's just try it and see," that >> resulted in a whole LOT of, "Oh, wow, it turns out it's just not a problem >> because it just doesn't happen." >> >> I would be willing to lay a fiver that this is one of those situations. >> >> -- >> Brian Lloyd, WB6RQN/J79BPL >> 706 Flightline Drive >> Spring Branch, TX 78070 >> brian@lloyd.com >> +1.916.877.5067 >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

JS

John Seamons

Fri, Feb 28, 2014 3:50 AM

On Feb 28, 2014, at 4:34 PM, Bob Camp lists@rtty.us wrote:

Is there any performance data on how the card does with a 5370A and / or a 5370B compared to the original CPU on the exact same box? Put another way - does the counter get better or worse with the new card? I realize that an A will do some things with B firmware, that’s not the question I’m asking. I’m looking for A to A or B to B timing data.

Yes. I made some measurements with the previous microcontroller-based board (48 MHz sam7x) versus the stock CPU card. I have not yet had a chance to repeat that exercise with the current board. Look at the 23-Jul-2011 entry on <www.jks.com/5370/5370.html> Very much dependent on what the measurement is, but a range of 5-72% faster.

On Feb 28, 2014, at 4:34 PM, Bob Camp <lists@rtty.us> wrote: > Is there any performance data on how the card does with a 5370A and / or a 5370B compared to the original CPU on the exact same box? Put another way - does the counter get better or worse with the new card? I realize that an A will do some things with B firmware, that’s not the question I’m asking. I’m looking for A to A or B to B timing data. Yes. I made some measurements with the previous microcontroller-based board (48 MHz sam7x) versus the stock CPU card. I have not yet had a chance to repeat that exercise with the current board. Look at the 23-Jul-2011 entry on <www.jks.com/5370/5370.html> Very much dependent on what the measurement is, but a range of 5-72% faster.

MC

mike cook

Fri, Feb 28, 2014 6:48 AM

Le 28 févr. 2014 à 02:55, Brian Lloyd a écrit :

And after all that, STILL no one has been able to answer the question,
"Is there a problem that must be solved?" Oh, lots of supposition, rules of
thumb, boatloads of experience, etc., but still no determination that
something really needs to be solved.

It depends on what level of security is required. I don't have one of these boxes, but it is legitimate to identify possible weak points.
Volatile file systems are one of those. The original box had no issues on that front. Embedded systems such as linux with flash memory do.
I have just had a Soekris FreeBSD NTP server go feet up due to file system corruption caused by a power failure. It is no great deal to create a new system, but I hadn't made a drop duplicate flash card so it will take some time. So one NTP server is down for a day. If a proud owner of one of these great boards doesn't care about that sort of issue, then OK, else one of the suggestions imposes.

Le 28 févr. 2014 à 02:55, Brian Lloyd a écrit : > And after all that, *STILL* no one has been able to answer the question, > "Is there a problem that must be solved?" Oh, lots of supposition, rules of > thumb, boatloads of experience, etc., but still no determination that > something really needs to be solved. It depends on what level of security is required. I don't have one of these boxes, but it is legitimate to identify possible weak points. Volatile file systems are one of those. The original box had no issues on that front. Embedded systems such as linux with flash memory do. I have just had a Soekris FreeBSD NTP server go feet up due to file system corruption caused by a power failure. It is no great deal to create a new system, but I hadn't made a drop duplicate flash card so it will take some time. So one NTP server is down for a day. If a proud owner of one of these great boards doesn't care about that sort of issue, then OK, else one of the suggestions imposes.

PK

Poul-Henning Kamp

Fri, Feb 28, 2014 7:16 AM

In message 7984E000-057C-4790-9D20-E4DAC1F6008F@rtty.us, Bob Camp writes:

Is there any performance data on how the card does with a 5370A and / or a
5370B compared to the original CPU on the exact same box? Put another way -
does the counter get better or worse with the new card? I realize that an
A will do some things with B firmware, that=92s not the question I'm asking.
I'm looking for A to A or B to B timing data.

I have spent most of my time trying to answer exactly that question
and I have not been able to devise any experiment that shows a
difference in noiselevels with a credible statistical uncertainty.

Interestingly, it is pretty evident from my experiments that the
phase-noise of whatever EXT CLK source I use is the main cause of
one-shot noise, so if anybody happens to have a really clean
10MHz and a 5370, it would be interesting to hear how low it
can go.

--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

In message <7984E000-057C-4790-9D20-E4DAC1F6008F@rtty.us>, Bob Camp writes: >Is there any performance data on how the card does with a 5370A and / or a >5370B compared to the original CPU on the exact same box? Put another way - > does the counter get better or worse with the new card? I realize that an >A will do some things with B firmware, that=92s not the question I'm asking. >I'm looking for A to A or B to B timing data. I have spent most of my time trying to answer exactly that question and I have not been able to devise any experiment that shows a difference in noiselevels with a credible statistical uncertainty. Interestingly, it is pretty evident from my experiments that the phase-noise of whatever EXT CLK source I use is the main cause of one-shot noise, so if anybody happens to have a *really* clean 10MHz and a 5370, it would be interesting to hear how low it can go. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

TK

Tom Knox

Fri, Feb 28, 2014 8:33 AM

Sorry I have not been following this thread closely. Isn't the fan a fairly standard size? If not what is unique about it?
There is a good chance I have a few around.
You are welcome to contact me directly actast@hotmail.com
Best Wishes;
Thomas Knox

Date: Thu, 27 Feb 2014 15:35:19 -0800
From: tonygreen924@inbox.com
To: time-nuts@febo.com
Subject: [time-nuts] HP53131A Fan/Blower

Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board.

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Sorry I have not been following this thread closely. Isn't the fan a fairly standard size? If not what is unique about it? There is a good chance I have a few around. You are welcome to contact me directly actast@hotmail.com Best Wishes; Thomas Knox > Date: Thu, 27 Feb 2014 15:35:19 -0800 > From: tonygreen924@inbox.com > To: time-nuts@febo.com > Subject: [time-nuts] HP53131A Fan/Blower > > Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board. > > ____________________________________________________________ > TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if5 > Capture screenshots, upload images, edit and send them to your friends > through IMs, post on Twitter®, Facebook®, MySpace™, LinkedIn® – FAST! > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

MG

Mike George

Fri, Feb 28, 2014 8:55 AM

Tony:

I replaced a fan in a 53132 by looking up the specs
on the existing fan and matching to one that was available.
On the 53132 I used Digi-Key 603-1009-ND.

The fan was part of the power supply as you said.
The wires are soldered to the board.

Good Luck,
Mike George

On 2/27/2014 18:35, Tony Greene wrote:

Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board.

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Tony: I replaced a fan in a 53132 by looking up the specs on the existing fan and matching to one that was available. On the 53132 I used Digi-Key 603-1009-ND. The fan was part of the power supply as you said. The wires are soldered to the board. Good Luck, Mike George On 2/27/2014 18:35, Tony Greene wrote: > Has anyone found a suitable replacement or a source for the fan/blower in the HP53131A ? I have talked to Agilent and the fan/blower is not a seperate item, its part of the power supply board. > > ____________________________________________________________ > TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if5 > Capture screenshots, upload images, edit and send them to your friends > through IMs, post on Twitter®, Facebook®, MySpace™, LinkedIn® – FAST! > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

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5370 processor boards available