thanks for putting up with my blather !
*From:* [email protected] <[email protected]> *On Behalf Of *Daniel Nelson
*Sent:* Thursday, September 10, 2020 4:16 PM
*To:* [email protected]
*Subject:* Re: [HP-Agilent-Keysight-equipment] 3582A troubleshooting
Huntron made just such a current detector as an accessory to the Huntron tracker, the Huntron 90 Shortrack/ The tracker was used to inject the signal and this goody could follow the current around on the circuit board. Used a small wand with a 220uH coil in the tip and a very high gain amplifier that ran an analog meter. I have one that needs the probe, but have been itching to get it working. Thanks for the story about car harnesses!
Dan in Chandler, AZ

In my earlier post i had a senior's moment with the model number of
the plug in it should be 83592A? and not 5392A

From: [email protected] <[email protected]> On Behalf Of Daniel Nelson
Sent: Thursday, September 10, 2020 4:16 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3582A troubleshooting

?

Huntron made just such a current detector as an accessory to the Huntron tracker, the Huntron 90 Shortrack/ The tracker was used to inject the signal and this goody could follow the current around on the circuit board. Used a small wand with a 220uH coil in the tip and a very high gain amplifier that ran an analog meter. I have one that needs the probe, but have been itching to get it working. Thanks for the story about car harnesses!?

Dan in Chandler, AZ

hello the group

I am looking for the service manual for the power supply of the hp 8593e because I have no more voltage -15volts and I can not find anything other than the diagram gives on KO4BB and I cannot find the denomination of the pins of the DB37 connector of this diet.

can someone help me in this search.

thank you all

JOEL ON4LJ

10 sep. 2020 kl. 12:30 em skrev Roy Thistle <roy.thistle@...>:

?On Wed, Sep 9, 2020 at 11:03 AM, Kuba Ober wrote:

It’s either a legitimate account that got owned by a modern spammer...

Well several posts by this OP appear on TekScopes with the same modus operendi :
1) A post about a superficially related/discussed topic (like a Tek MDO, on TekScopes) (and now here on this forum,about Infiniium!)
2) A link to a equally superficially related article, posted on a completely unrelated spam site.
Banning the OP might lead to a game of "whack a mole"
Banning the particular link they post, might be more effective. I say this because IMO they are trying to bait forum members to visit their Website. (For "add clicks"? ... for metadata?)

all the posts about shorts in power supplies reminds me of the days

when I was a kid working in my uncles automobile repair shop. This was

damn near pre transistor, and most cars that we worked on still had points.

?

Once and awhile a car would come in with a short, typically in the wiring,

and ?it was a real pain to attempt to track down; open up a loom, cut a wire and

try to determine which side of the short you were on, then splice the wire, etc.

?

My uncle had a tester, which was little more than a turn signal flasher

of the bimetal clicker variety and a compass. One simply removed the fuse,

hooked the flasher to the battery and the load and it would start to cycle.

Then you simply ran the compass over the loom with the short in it, the

compass would align with the current in the short, and reverse direction when you

ran past the short. This reduced the investigative time tremendously.

?

Some clever individual could accomplish the same thing with a solid state pulser

and a current limited power supply, and use a magnetic sensor to go right to the

shorted item (or a half inch diameter Cracker jack compass) , and only have to unsolder one part.

?

?

?

From: [email protected] <[email protected]> On Behalf Of Dave Casey
Sent: Friday, September 04, 2020 1:11 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3582A troubleshooting

?

Could just as easily be a blown transistor in the switcher causing it to pop the fuse.

?

Dave Casey

?

On Thu, Sep 3, 2020 at 11:57 PM Dave McGuire <mcguire@...> wrote:

? ?I found it, or at least narrowed it down.? The instrument functions
when I plumb in a bench supply to replace the 5.1V regulator board
(A16), so it would seem the problem is somewhere on that board.? It
draws ~3.7A on that rail, which seems reasonable for a regulator of that
design.? Do you concur?

? ?And it actually seems to run rather nicely, producing results that,
make sense, though I've not exhaustively verified them.? And the CRT is
in decent shape, which is a nice bonus.

? ?So now to troubleshoot the 5.1V regulator board.? I did check those
two large capacitors; they're not in great shape but they're not shorted.

? ? ? ? ? ? ? -Dave

On 9/3/20 6:07 PM, tmillermdems wrote:
> It is a switching supply that takes 50 volts down to 5. Start with your
> DMM and look for a shorted cap on A16. The +5 goes to almost every board
> so the possibilities for a shorted cap are nearly endless. Hopefully
> that will be the problem so an extender can be avoided. If the short is
> not on A16, you can pull boards to locate the problem just using your DMM.
>
> Good luck. It is an interesting instrument.
>
> Tom
>
>
>
> On 9/3/2020 4:55 PM, Dave McGuire wrote:
>>
>> ? Hey folks.? I seem to recall there being a few people here who have
>> worked on 3582As.
>>
>> ? I have one that's blowing the fuse on the 5.1V regulator board
>> (A16).? I've not dug into it beyond replacing the fuse, which blew
>> again immediately.? Before I dig in, is this a common fault?
>>
>> ??????????????? Thanks,
>> ??????????????? -Dave
>>
>


--
Dave McGuire, AK4HZ
New Kensington, PA

9 sep. 2020 kl. 6:13 em skrev Harvey White <madyn@...>:

?I never had a particular problem with EAGLE's UI. Some hate it, some do not. (it was easier to use than writing my own PCB router).

KiCad does not have an autorouter, although there's one that can be "added" to it. Since I have no particular problem with EAGLE 7.x, and I do have the "experimenter" license which allows 4 by 6 inch boards rather than 4 by 3 inch boards....

I'm going to wait until KiCad does an autorouter. I do 4x4 boards, 144 pin TQFP chips, 6 to 10 page schematics. I'm not happy with the thought of routing that myself, and yes, I've done manual routing before.

When either EAGLE proves insufficient to the task, or KiCad gets a better integrated autorouter, then I shall consider it.

Tastes vary.

Harvey

On 9/9/2020 5:38 PM, Kuba Ober wrote:
I went through the Eagle nightmare and all I can say is this: use KiCad. No reason not to. It’s a very reasonable product, resembling old Protel in some ways. It’s easy to use, state-of-the-art interactive PCB routing, and is easy to hack on. CERN is a major contributor to it, I think. There are very few bugs I ran into when using the most recent version - a good sign. I can go a whole day without crashing it and without fighting with it. Eagle’s underlying UX principles were idiotic I from the get go - I can’t understand how could anyone stand that nonsense. It was like a thin graphical shim for directly modifying some rigid data structure. Totally bonkers. I know that Autodesk improved things a bit once they took over, but CadSoft’s “vision” for it was utter garbage. No wonder they had to sell it - it was an insult to the customers.

Cheers, Kuba

8 sep. 2020 kl. 1:57 em skrev Harvey White <madyn@...>:

?The EAGLE version only does 3 by 4 inch boards, single sheet, double sided at most.

For my own purposes, too limited.

EAGLE used to be a separate product, but IIRC, is *only* available as an addon to Fusion 360. More robust versions of Fusion 360/EAGLE are available by subscription only.

Harvey

On 9/8/2020 10:01 AM, Sandra Carroll wrote:
I’m surprised no one has mention fusion360. Full CAD/CAM with Eagle now as well.
3D parametric, direct manufacture to 3D printers. I send to both simplify3D and chitubox all the time.

Easy to use. Still no cost to makers.

On open source
Some comments. I’ve run into countless projects that die or are abandoned in the opensource community. Yeh some of the big stay around but far greater go nowhere.

Opensource is not this great pancea of perfection. If your not a developer yourself you can only hope they’ll accept your proposal for a change. Personal experience is they don’t always do this. In fact in my experience they rarely do. It does not fit the authors vision of how it should work.

I love Perl. But the community refused for the longest time to accept ebcdic(mainframe) into the their world. And only did by making it ascii internally which has its own problems for those of us in the mainframe.

I’m not against opensource, I use it all the time. Like anything it has it’s upside and downside.

Sandra

Sent from my iPhone 7 Plus

On Sep 8, 2020, at 9:29 AM, Chuck Harris <cfharris@...> wrote:

?Bear in mind that one of the features of open source projects
is they really never go away. Commercial projects come and vanish,
and change their licensing terms with great regularity.

OpenSCAD is used by dozens of other projects, and is a very solid
package. The source is available on github, and if you don't like
the direction the authors are going, you can take it and make it
your way. Sure, if you aren't talented that way, you will have to
hire it done, but that is what you are already doing with the outright
commercial packages... without any hope of customization.

If OpenSCAD is too hard to learn (it isn't), you can use one of the
many packages, like FreeCAD, that have incorporated it into their
graphic interfaces.

We greybeards remember the PC so well, that we wrote GNU and linux
for it, and emancipated ourselves from Microsoft.

Educator licenses are available to universities to allow them to
train their kiddies on the package at no cost to the university.

The university professor gives a 1 year copy to each student, and
they use it for their course work. At the end of the year, it is
inactivated.

The companies do that because it is free advertising, and a free
beta testing of their product. They also know that once trained on
a product, students will ask for it where they work.

That is the sole and only reason Apple and Microsoft have such nice
licensing terms for K-12 schools.

Also, to use a student license, usually you are required to show
registration at a university. The rules on student licenses are
highly restrictive relative to commercial intention. A product
designed on a student license cannot ever be commercialized without
transferring it to a full on commercial seat... at typically $50K a
seat... and once there, it can never be brought back to a student
seat.

-Chuck Harris

Tom Gardner wrote:

Overall I doubt that members of this group will want to make anything really complex,
but they might like it to be available to other members in a decade or so. So have a
quick look and choose any tool that feels comfortable without a large learning curve.

After a///very//quick look/, it appears that OnShape is....

Free for "educators", with a 1 year time limit on the licence - whatever that means.

Online only, running in a browser like OpenJSCAD. The standard questions with any
"cloud service" are whether:

* it will be there in 5 years time; see Microsoft PlaysForSure(TM), and giggle
* the licence conditions can be changed, e.g. is the company/product changes ownership

Greybeards will remember the sighs of relief when PCs became available, because it
meant that users' data was not "held hostage" inside silos owned by other companies.

On 08/09/20 02:54, Kuba Ober wrote:
OnShape - as long as it’s not for commercial purposes - all your projects are
publicly viewable then. A joy to use. All it needs is an OK internet connection and
a supported web browser.

FreeCAD is another option.

7 sep. 2020 kl. 10:17 fm skrev victor.silva via groups.io
<daejon1@...>:

?This is off topic but the end result will be for HP products so please bear with me.

I am looking for recommendation on 3D modeling software (preferably freeware) and
a company that I can then send the 3D model to
make a battery holder clamshells. I propose to make half clamshell pieces that
would then make a complete
battery holder by using 2 pieces that would fit together.

Thank you,
Victor

From: [email protected] <[email protected]> On Behalf Of Dave Casey
Sent: Friday, September 04, 2020 1:11 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3582A troubleshooting

?

?

How many KV is the typical X Ray ?

On Thu, Sep 10, 2020, 8:35 AM Chuck Harris <cfharris@...
<mailto:cfharris@...>> wrote:

My JEOL JSM-6100 Uses an oil-less pump as its roughing pump, which
keeps the room from getting hazy.? It has a water cooled oil diffusion
pump under the column, and a little varian ion pump for the electron
gun.? It has pneumatically operated valves in the column that close
when the chamber's vacuum is too low quality.? This is to prevent the
filament from taking a hit, and to speed up the pump down time after
a sample change.

In addition, I have an X-Ray detector that is used to do spectral
analysis on samples by lighting up a spot on the sample with the beam,
at different energy levels, and measuring the X-Ray spectrum of the
resulting Bremsstrahlung radiation.

The X-Ray detector has its own LN2 dewar, which can keep the detector
cold for a couple of weeks between fillings.? It also has its own
dedicated VME system that drives the SEM, and processes the X-Ray
data...

If I can ever get my SEM out of the warehouse it is stored in, that
is.

-Chuck Harris

The ISI had a really tiny diffusion pump essentially mounted under the chamber.? It's no more than a foot tall.? It has No LN2 trap, nor requires LN2, but it is water cooled.? We had water running continuously and bought he rough and diffusion pumps running continously and vented.? Some Oil mist goes out the vent from the roughing pump.

Pumping involves closing the foreline valve and rough out the chamber and not letting the foreline pressure get above around 75 um (memory).? Water vapor takes a while to pump out.? One way to deal with that is to back fill the chamber with a dry gas and cycle it multiple times.??

To prevent backstreaming with the rough pump, you can use a bleed valve, but there are backstream preventors.? Some need to be baked out once and a while.

There is no reason why you can't have a turbo-molecular pump on the SEM.? They are just more expensive.? The pumps on a Auger-Sims were a roughing pump, turbo-pump and an ION pump.? Imaging was really bad.? It's job was analysis.

15-20 minutes is a good number, but humidity matters.

if your vacuum meter hovers around 100 uM, you have a water vapor problem.? Usually in the roughing pump oil.

What you really don't want is to open the chamber to atmosphere with it roughing the chamber and you also don't want the oils condensing on the column.

The EDS/EDAX unit has a beryllium window which passes low energy x-rays to the EDS detector (An option).? EDAX - Energy Dispersive Analysis of X-rays.

Pump-down was only manual.?? valves were manual.

Power failures are problematic with larger vacuum systems that have a closed loop refrigerent? LN2 replacement and electric valves.?

On Wednesday, September 9, 2020, 2:25:03 PM EDT, Dave McGuire <mcguire@...> wrote:

On 9/9/20 2:21 PM, Mike Vande Voort wrote:
> how long to pump down the chamber after loading a sample, and you
> backfill with Nitrogen prior to opening ?

? On my very old ETEC Autoscan, chamber pump-down usually takes about
three minutes.? I do not use N2 back-fill.

? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA