Re: FS 11672A 8660 extension cable kit
Gary,
?
I will take the extender cable kit. Let me know how you to complete.
?
Thanks,
Russ
WA7MLW
?
|
Re: Keysight 23522a Binary Arb Files
Hey Yves,
I found a threat for a 33210 where you created a testfie for a User. Is IT possible that you create a small barb File with all possible Parameters for my 33522a?
Thanks in advance Alex
|
Would anyone have an example cal file they can share? I’d like to create one for my hardware
|
Re: Cleaning N-tyoe cal kit
If you manage to separate the metallic parts form dielectrics , it is possible on older connectors. I recommend a solution of boiling water and sodium bicarbonate to clean the parts the process can take a couple of hours. Sodium bicarbonate is a known antiacid and its easy to get . It reverts the corrosion and is the best to save gold plated surfaces. Of coarse you can rework the surfaces with electroplating.? Ing. Patricio A. GrecoTaller Aeronáutico de Reparación 1B-349Organización de Mantenimiento Aeronáutico de la Defensa OMAD-001Gral. Martín Rodríguez 2159San Miguel (1663)Buenos AiresT:?+5411-4455-2557F:?+5411-4032-0072
toggle quoted message
Show quoted text
On 22 Mar 2025, at 22:23, Robert G8RPI via groups.io <robert8rpi@...> wrote:
? After lots of trials with several solvents over the years I've found the best solvent for decayed PU foam is 99% methanol.
|
FS 11672A 8660 extension cable kit
HP list, with all the interest in 8660’s recently, I can offer this 11672A cable kit for sale. It is complete, but as expected the foam has deteriorated, everything will need to be cleaned. Hard to see but the cables and connectors are in very good condition, looks like it has not had much use. This is the kit to extend plug in’s, not mainframe board extenders. ??I used 8660’s for many years here, good piece of RF test equipment, but replaced with lighter weight/small size. $80.00 total shipped to your door, US only, ?L48. Gary WA2OMY
|
Re: display tilt adjustment hp8591a
I have an HP8714 VNA here, that we used to cart around the
country servicing power amps.?? After one visit to a MRI place,
the entire display was at 45' tilt!
Eventually we degaussed the case (well, the entire instrument!)
using a Helmholtz coil, a 24V 5A transformer and a Variac!
"Normal" (non tilted) service was restored!
Some years later, the source module went intermittent, an OC
somewhere in the signal path.?? I got it for free as a result.?
Sometimes it fixes itself.? I need to find or make an extender for
that module.
"One Day"...
Dave 'KBV.
|
Re: Cleaning N-tyoe cal kit
If you use methanol, please be extremely careful. Wear gloves, don't
inhale fumes, etc. Methanol poisoning is no joke. Read up on it
prior to use.
--Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
On 3/22/2025 2:23 PM, Robert G8RPI via
groups.io wrote:
toggle quoted message
Show quoted text
After lots of trials with several solvents over the years
I've found the best solvent for decayed PU foam is 99% methanol.
|
Re: Cleaning N-tyoe cal kit
After lots of trials with several solvents over the years I've found the best solvent for decayed PU foam is 99% methanol.
|
Re: E4402B SA power problem - need DC socket connections
On original question +ve to top see image of mating connector viewed from "flat" side.  On PSU issue generally they are such a pig to get out and apart it is worth replacing all the small electrolytics. The big HV ones are generally OK. Just checking ESR is not enough. I'm not generally a fan of "shotgun" electrolytic replacement but decided to do it on the very similar PSU in my 8920a (worth looking at the 8920x PSU diagrams there aer some on the web). when I had it out following a main switch transistor failure. While all the caps looked OK and checked for in-circuit ESR (several are in parallel) 3 had started to leak th in one case the PCB was starting to burn.
?
Robert.
|
Re: E4402B SA power problem - need DC socket connections
Power-down is now fairly random - anywhere from 2 to 10 minutes.? I've replaced the CPU board SnapHat with a much better one (3.2V vs 0.5V!) and that seems to cure some of the oddness on startup (data out of range etc).
But a secondhand psu is $500 and up!? BTW the SA powers up perfectly again if I hit the on-button straight away, so it's hopefully not some sort of heat fault.? Maybe I need to shotgun the caps in the psu, or at least check all ESRs properly.
If anyone has any ideas about this power supply repair please let me know!
-Jeremy
|
Re: E4402B SA power problem - need DC socket connections
Hello Jeremy,
The 12VDC cable kit has the part number E4401-60066. Sometimes they
appear for sale on eBay. I don't know the polarity of the pins but you
can check with a multimeter which pin is the Ground pin and the other
one will be the +12VDC. Maybe the Ground pin is not the same as the
chassis ground but you can try, otherwise you will need to open the case
and check the PSU PCB to see which one is the Ground.
The Snaphat battery will not create such issues that you experience with
your SA.
As for schematics they are available at Artek but the PSU is not
included in that CLIP.
Regards,
Razvan
toggle quoted message
Show quoted text
On 22/03/2025 18:46, Jeremy Owen via groups.io wrote: I have an E4402B spectrum analyser with an odd power fault.? The SA
powers down after about 10 minutes, but works fine up until then.
(It has been working well in the past but has been unused for a year or two.
I want to try powering it from 12V DC to see if that makes any difference.
Does anyone know the polarity of the two-pin connector on the rear?
And I assume that no-one has rea;l schematics for this unit.? I can't
find them anywhere.
The service manual has just block-level detail.
And could a failing Snaphat battery on the CPU board have any effect on
powering up and down?? It's 7 years old according to the sticker.
any help gratefully received!
-Jeremy
|
Re: OPT 003 (48-440 Hz compatible) fan (full size "Muffin" type fan) - replacement requirements?
Fans here, turns out on closer inspection the 8673D uses 92mm in the upper section, not 120mm - oops - so regrouping on that front (the 8660 series appear to be 120mm fans.)
|
Re: Cleaning N-tyoe cal kit
Been using 99% isopropyl (IPA, not from the local brew pub).
A 3.5mm Maury sliding load/termination had enough of that same foam residue that it would not slide across it's range. The supplies below (aerosol IPA and foam-tip swabs, along with a very fine tipped tweezers to pluck out anything that could be plucked) together all got the sliding load back to normal motion.
MG Chemicals 824-450G as an aerosol (not push-pump) packaging I've found is really handy for detail electronics cleaning (just IPA, but in a propellant spray can.)
Foam-tip swabs (like those used for cleaning fiber-optic connectors during field installation, cheap by the pack of 100) with either rounded (2.5mm) or pointy (1.25mm) tips are also helpful to reach in around the male pin and internal shielding. The female pin end I think only can be cleaned by IPA, that's where delivering via spray is handy.
Dave
|
Re: Cleaning N-tyoe cal kit
Its horrible stuff isn't it.
?
I've actually got some Electrolube Contact Cleaning Strips which I bought for cleaning relay contacts. And with a bit of patience and some IPA they seem to be doing the job. They are possibly slightly abrasive, so I'm not going to go too mad with them.??
?
?
?
|
E4402B SA power problem - need DC socket connections
I have an E4402B spectrum analyser with an odd power fault.? The SA powers down after about 10 minutes, but works fine up until then.
(It has been working well in the past but has been unused for a year or two.
I want to try powering it from 12V DC to see if that makes any difference.
Does anyone know the polarity of the two-pin connector on the rear?
And I assume that no-one has rea;l schematics for this unit.? I can't find them anywhere.
The service manual has just block-level detail.
And could a failing Snaphat battery on the CPU board have any effect on powering up and down?? It's 7 years old according to the sticker.
any help gratefully received!
-Jeremy
?
|
Re: HP 3403C True RMS Voltmeter display fault
Are you testing them at their rated voltage?
|
Re: Cleaning N-tyoe cal kit
Hello,
I have the same issue with my calibration kits, the foam got very sticky
and the majority of the connectors are affected. Some had a dust cap and
only the exterior was affected and it cleaned nicely with IPA.
I was also thinking to put them in the small ultrasonic cleaner that I
have but from what I saw the labels will probably wear off. Some text on
the labels is already not visible when I cleaned the outside with IPA 99%.
Regards,
Razvan
toggle quoted message
Show quoted text
On 22/03/2025 14:57, vee-dub565 via groups.io wrote: Possibly, although I'd be concerned about immersing it in the cleaning
solution.
_._,_._,_
|
Re: Cleaning N-tyoe cal kit
Possibly, although I'd be concerned about immersing it in the cleaning solution.?
|
Re: Cleaning N-tyoe cal kit
Ultrasonic bath with a suitable cleaner?
Enviado do meu Tele-Movel.
Desculpe a brevidade.
Not strictly Agilent/HP, but I recently bought a 2nd hand N-Type cal kit for the 3 HP VNA's I have.?
?
I did originally want a new kit from Kirkby Microwave, but after 3 or 4 emails over the course of a few weeks with no response I gave up.?
?
So I have this 2nd kit, the pin depth checks out ok on it. Problem is the foam has deteriorated in the case, and some of it has got into the connectors. I've tried IPA with a swab and got the worst of it out, but some stubbornly remains. Any suggestions to dissolve the black sticky residue? Or otherwise clean these connectors.
?
Problem number 2 is creating a definitions file for the 8519C, 8753C? and 8571A although 85054A?
|
Not strictly Agilent/HP, but I recently bought a 2nd hand N-Type cal kit for the 3 HP VNA's I have.?
?
I did originally want a new kit from Kirkby Microwave, but after 3 or 4 emails over the course of a few weeks with no response I gave up.?
?
So I have this 2nd kit, the pin depth checks out ok on it. Problem is the foam has deteriorated in the case, and some of it has got into the connectors. I've tried IPA with a swab and got the worst of it out, but some stubbornly remains. Any suggestions to dissolve the black sticky residue? Or otherwise clean these connectors.
?
Problem number 2 is creating a definitions file for the 8519C, 8753C? and 8571A although 85054A?
|
Patricio A. Greco
Alexandre Souza