HP-Agilent-Keysight-equipment@groups.io

Re: HP4195A schematics.

Hi Luis,
There is a Service Manual for the 4195A located on the Agilent website
(www.agilent.com) Type "4195A" in the Search box.
Matt

HP4195A schematics.

Luis Cupido

#5237

Hi,

Have here a 4195A and I'm looking for service
manual with schematics diagrams
Have all the other documentation, calibration etc but no
diagrams. Any Help ?

It powers up, all ps voltages are ok, but no display nor
any other activity, so first candidate is CPU boards etc.
Any advice from someone that knows this equipment well ?

Many Thanks,

Luis c.
ct1dmk.

Re: HP1744A Storage Scope B-Scan Filter

#5236

Joe (G3LLV)

Or a RC network from the calibrator to ch 1 input should do the same
thing.

Regards,
Warren

HP1744A Storage Scope B-Scan Filter

#5235

Hi,

   Can anyone tell me the exact nature of the subject accessory? I
assume that it was used to slow down the rise/fall time of the
calibration signal during a B-scan storage-mesh image removal. If
I am correct, I suppose that a sine or triangular wave from a
function generator would do the job just as well.


   Thanks - Joe (G3LLV)

Re: HP8566A Spectrum Analyser 1st LO phaselock

Ali Heydari

#5234

Hi Dear
  in most cases Recalibration of the equipment can identify , where the problem is .
  if the spare boards are available , replace the suspected board & recheck.
  if not , go to trouble shooting guide, & follow the steps , & diagonize where the problem comes , then it will be easier to track .
   Hope to succed well 
  Ali

John Miles <jmiles@...> wrote:
          Sounds like there could be a problem in the pretune DAC section, if it's
locking near the bottom of the YTO's coverage range (which is reached only
on the 2-22 GHz band, not the 0-2.5 GHz band). After verifying that all
power-supply voltages are OK on A17-A19, I'd check the A20 and A21
assemblies. Start with ESR checks on the electrolytic capacitors -- that
was all it took to fix one 8566B I saw with a very similar problem.

Then, if all looks OK, I would attempt to recalibrate the YTO driver (A19,
A20). If the trouble is in that area, it'll become obvious as you go
through the calibration steps.

-- john, KE5FX

Show quoted text

-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]On Behalf Of
companypleasant
Sent: Friday, November 17, 2006 3:47 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] HP8566A Spectrum Analyser 1st LO
phaselock

Hi Group
can anybody point me in the right direction,
the screen is showing YTO UNLOCK, however on
further examination I find
1 it wont lock at all on the 0-2.5 band
2 it will lock on the 2-22 Ghz band if the
CF is tuned down towards the bottom of the
lowest harmonic band and the span is reduced,
however if it is reduced too much it loses lock again
also if the jumper is inserted to ignore phase lock errors
and a signal is observed it tunes in jumps.
a test with another analyser during phaselock (Tek 492) shows
that the residual fm is in fact removed.
YIG output is about 15-17 dbm
a quick check on one of the M/N frequencies from the table
in the manual showed the correct values.I have not yet
measured any of the various loop power levels
regards
Jonathan

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Re: HP8566A Spectrum Analyser 1st LO phaselock

John Miles

#5233

Sounds like there could be a problem in the pretune DAC section, if it's
locking near the bottom of the YTO's coverage range (which is reached only
on the 2-22 GHz band, not the 0-2.5 GHz band).  After verifying that all
power-supply voltages are OK on A17-A19, I'd check the A20 and A21
assemblies.  Start with ESR checks on the electrolytic capacitors -- that
was all it took to fix one 8566B I saw with a very similar problem.

Then, if all looks OK, I would attempt to recalibrate the YTO driver (A19,
A20).  If the trouble is in that area, it'll become obvious as you go
through the calibration steps.

-- john, KE5FX

Show quoted text

-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]On Behalf Of
companypleasant
Sent: Friday, November 17, 2006 3:47 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] HP8566A Spectrum Analyser 1st LO
phaselock

Hi Group
can anybody point me in the right direction,
the screen is showing YTO UNLOCK, however on
further examination I find
1 it wont lock at all on the 0-2.5 band
2 it will lock on the 2-22 Ghz band if the
CF is tuned down towards the bottom of the
lowest harmonic band and the span is reduced,
however if it is reduced too much it loses lock again
also if the jumper is inserted to ignore phase lock errors
and a signal is observed it tunes in jumps.
a test with another analyser during phaselock (Tek 492) shows
 that the residual fm is in fact removed.
YIG output is about 15-17 dbm
a quick check on one of the M/N frequencies from the table
in the manual showed the correct values.I have not yet
measured any of the various loop power levels
regards
Jonathan

HP8566A Spectrum Analyser 1st LO phaselock

companypleasant

#5232

Hi Group
can anybody point me in the right direction,
the screen is showing YTO UNLOCK, however on
further examination I find
1 it wont lock at all on the 0-2.5 band
2 it will lock on the 2-22 Ghz band if the
CF is tuned down towards the bottom of the
lowest harmonic band and the span is reduced,
however if it is reduced too much it loses lock again
also if the jumper is inserted to ignore phase lock errors
and a signal is observed it tunes in jumps.
a test with another analyser during phaselock (Tek 492) shows
 that the residual fm is in fact removed.
YIG output is about 15-17 dbm
a quick check on one of the M/N frequencies from the table
in the manual showed the correct values.I have not yet
measured any of the various loop power levels
regards
Jonathan

Re: www.hpmemory.org

Ali Heydari

#5231

Good morning ,
  Thanks a lot for your E mail
  Hopefully I will & learn more 
  Kind Regards
  Ali - Heydari

Glenn Robb <robb@...> wrote:
          HP Lovers ...

Marc Mislanghe has been working on his HP website for more than a year. He
has finally put up his first version, on www.hpmemory.org ... I dare say
it is a masterpiece ! Take a look when you have a chance, and spend some
time enjoying that nostalgic feeling!

Regards, 
Glenn Robb www.hparchive.com



         

 
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Re: www.hpmemory.org

Ali Heydari

#5230

Thank you ,hpoefully I will & learn more
Kind Regards
  Ali-Heydari
"Jose V. Gavila" <eb5agv@...> wrote:
          
Astounding!!!

Thanks for sharing the link.

Regards,

JOSE

At 16:24 16/11/2006 -0500, you wrote:

HP Lovers ...

Marc Mislanghe has been working on his HP website for more than a year. He
has finally put up his first version, on www.hpmemory.org ... I dare say
it is a masterpiece ! Take a look when you have a chance, and spend some
time enjoying that nostalgic feeling!

Regards,
Glenn Robb www.hparchive.com----------------------------------------------------------
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN) - Loc: IM99SM

Vintage Radio: 
Vintage Test Equipment: 
European Boatanchors List: 

---------------------------------
Sponsored Link

   Don't quit your job  - take classes online and earn your degree in 1 year. Start Today

Re: www.hpmemory.org

Edward van Ulft

#5229

Glenn, Marc Mislanhe,

A most promising setup, with future posibilities!

And when time comes most worthy of help in any way needed.

Kind regards

Edward van Ulft

Glenn Robb schreef:

Show quoted text

HP Lovers ...

Marc Mislanghe has been working on his HP website for more than a year. He
has finally put up his first version, on www.hpmemory.org ... I dare say
it is a masterpiece ! Take a look when you have a chance, and spend some
time enjoying that nostalgic feeling!

Regards,
Glenn Robb www.hparchive.com

Re: www.hpmemory.org

Jose V. Gavila

#5228

Astounding!!!

Thanks for sharing the link.

Regards,

JOSE

At 16:24 16/11/2006 -0500, you wrote:

HP Lovers ...

Marc Mislanghe has been working on his HP website for more than a year. He
has finally put up his first version, on www.hpmemory.org    ... I dare say
it is a masterpiece ! Take a look when you have a chance, and spend some
time enjoying that nostalgic feeling!


Regards,
Glenn Robb www.hparchive.com----------------------------------------------------------------------
  73 EB5AGV / EC5AAU - JOSE V. GAVILA
     La Canyada - Valencia (SPAIN) - Loc: IM99SM

  Vintage Radio: 
  Vintage Test Equipment: 
  European Boatanchors List: 

www.hpmemory.org

Glenn Robb

#5227

HP Lovers ...

Marc Mislanghe has been working on his HP website for more than a year. He
has finally put up his first version, on www.hpmemory.org    ... I dare say
it is a masterpiece ! Take a look when you have a chance, and spend some
time enjoying that nostalgic feeling!


Regards, 
Glenn Robb www.hparchive.com

Re: cad software

#5226

You can get a free download of Eagle 4.1 PCB software from
the Cadsoft
website ().And this place  takes files directly in
Eagle format - so no hassle in producing a whole set of Gerber files.  Their
$33 option (160x100mm double sided, through hole, silk screen and solder
resist) corresponds to twice the maximum size of the free Eagle software,
but you can panelise however you wish - send them the Eagle files and a
cutting plan.  I recently did this with eight smaller boards and they come
back looking a real treat.

Craig

Re: New section on my WEB: Workbench

#5225

Thanks Jose,
It's always interesting to visit your webpage to see what's new in
Spain.  You must have either a very big house, or a very understanding
wife to be able to keep so much equipment!
Regards,
Matt
WB5YDK

Re: cad software

#5224

You can get a free download of Eagle 4.1 PCB software from the Cadsoft
website ().  It does everything that
their "for sale" version does, except you are limited to creating
smaller, 2-layer PCBs that fit on a single schematic sheet.  You have
to buy the full product versions to do bigger, multilayer boards.
Still, the functionality of the demo is more than sufficient to get a
lot of jobs done.  The program outputs proper Gerber and NC Drill
files, so you are not locked into dealing with a specific PCB fab
house, like some of the "freeware" layout programs out there.

P.S. If you prefer reading their German webpage, go to

Re: Manuals.

#5223

Hey, I thought that I was the only troll here!

As Edward said, go to eBay and search on the seller: ridge_equipment
to find that listing of older HP manuals.  I have also bought many
things from them and always had a good experience.

Re: New section on my WEB: Workbench

#5221

Greetings, MY my, did not no you were so young!!!
Dave R--- In hp_agilent_equipment@..., "Jose V. Gavila"
<eb5agv@...> wrote:

Hello!

I have started a new section on my WEB. It is called EB5AGV'sWorkbench. I
hope to share with visitors my experiences fixing test and radio gear in an
informal and almost real-time (kind of Blog) fashion.

First installment is devoted to the HP-8640B I have just repaired.Address 
of the index page is:




Hope you enjoy it!

Regards,

JOSE
----------------------------------------------------------------------
   73 EB5AGV / EC5AAU - JOSE V. GAVILA
      La Canyada - Valencia (SPAIN) - Loc: IM99SM

   Vintage Radio: 
   Vintage Test Equipment: 
   European Boatanchors List:

Re: New section on my WEB: Workbench

John Day

#5220

Nice page Jose!

Thanks for sharing it.

John

Show quoted text

At 06:00 PM 11/15/2006, Jose V. Gavila wrote:

Hello!

I have started a new section on my WEB. It is called EB5AGV's Workbench. I
hope to share with visitors my experiences fixing test and radio gear in an
informal and almost real-time (kind of Blog) fashion.

First installment is devoted to the HP-8640B I have just repaired. Address
of the index page is:

<>

Hope you enjoy it!

Regards,

JOSE
----------------------------------------------------------
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN) - Loc: IM99SM

Vintage Radio: <>
Vintage Test Equipment: 
<>
European Boatanchors List: 
<>

New section on my WEB: Workbench

Jose V. Gavila

#5219

Hello!

I have started a new section on my WEB. It is called EB5AGV's Workbench. I hope to share with visitors my experiences fixing test and radio gear in an informal and almost real-time (kind of Blog) fashion.

First installment is devoted to the HP-8640B I have just repaired. Address of the index page is:

Hope you enjoy it!

Regards,

JOSE
----------------------------------------------------------------------
  73 EB5AGV / EC5AAU - JOSE V. GAVILA
     La Canyada - Valencia (SPAIN) - Loc: IM99SM

  Vintage Radio: 
  Vintage Test Equipment: 
  European Boatanchors List:

Re: New section on my WEB: Workbench

[email protected]

#5222

Thanks Jose, I have two of those boat anchors, and need all the help I can  
get. I have never found a source or a proper repair for the gears. Epoxy does  
not want to adhere to the surface properly.
Nice clear photographs.
Thanks again,
Eddy  
 
W5WTN/K5IPA

开云体育