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  1. HP-Agilent-Keysight-Equipment
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Expanded Topics Messages
Date
Re: 4395A software

 

Hi Sergey,

I found a way to upgrade the options to 1D6, 010, 001

This is the reference:


How to upgrade:

1. Change this line to this values:



2. Calculate the Checksum over this area:





3. Add +1 = 0x3890

4. Write the new Checksum to data file:


5. Programm the EEPROM

And now the Device response with OPTIONS : 1D6,010,001
Internal test: 1 A1 CPU PASS

Best regards
Rico

Re: HP 8640B stiff main tuning

 

I have just put
8640B Service Manual Volumes 1 and 2 inc CCT Pn 08640-90215 May 1991 .pdf

Onto this site in the files also other info including 8640 note for sticking tuning
Paul

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Froggie the Gremlin
Sent: 21 May 2022 16:46
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 8640B stiff main tuning

Avoid dissassembly. Get service manual.
Try some gentle solvent then lube on the shaft , perhaps Iso Alcohol?

Jon
Re: HP 8640B stiff main tuning

 

Avoid dissassembly. Get service manual.
Try some gentle solvent then lube on the shaft , perhaps Iso Alcohol?

Jon
Re: HP 8640B stiff main tuning

 

No, its been sitting on the bench in operating position. Electrically, the oscillator works fine with no problems, so I don't think its a problem with the internal grease migration. Its just that the tuning dial is very hard to turn. Other shafts and bearings in the instrument show the same symptoms of stuck bearings. The original grease seems to become like glue with age.

Doing multiple searches I have not found any information on the cavity disassembly. Its not immediately obvious how to take it apart and given it otherwise works fine I am hesitant to proceed. I was hoping to find someone who has actual experience in disassembly.

The best info I could find on the actual physical construction comes from a drawing in the HP Journal of Feb, 1973. It shows the shaft and tuning plunger, but lacks details.

Mike, WA2YGA

8640B cavity.pdf
8640B cavity.pdf

Re: HP 8640B stiff main tuning

 

¿ªÔÆÌåÓý

You didn't store it on its back, did you??? If so, that could be the problem.? You might try storing it face-down for a few days/weeks before taking the cavity apart.?

?

There's some discussion of a similar phenomenon here ( https://www.ve7ca.net/TstH86.htm ), in which the migrated grease causes intermittent electrical contact.? It's easy to imagine that the loss of lubrication in certain areas could cause the shaft to bind up.

?

-- john, KE5FX

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of mike.kusiak@...
Sent: Friday, May 20, 2022 3:36 PM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] HP 8640B stiff main tuning

?

I recently fired up my 8640B after a few years of non use and found the main tuning dial almost impossible to turn. After warming up a while it loosened up a bit but still remains very stiff.

I realize there is a problem of the old grease hardening up on the various shafts, as I already had to clean and relubricate the bandswitch gearbox shaft and bearings. The fine tune mechanism also had this problem of hardened grease.

It appears the main tuning shaft of the cavity oscillator is suffering from the same problem. If I look at the tuning shaft where it enters the cavity I can see evidence of hardened grease. But the problem is how can I clean the hardened grease from the shaft and bearing without complete disassembly of the cavity itself?

Does anyone have experience in taking the cavity apart to relubricate the shaft and tuning plunger threads?
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

¿ªÔÆÌåÓý

Bingo.............

H.


On 5/20/2022 11:51 PM, Martin via groups.io wrote:

Avoid moving into hi-rise buildings in Florida... especially those close to salty waters!

cheers
Martn

Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

Avoid moving into hi-rise buildings in Florida... especially those close to salty waters!

cheers
Martn
Re: Thoughts on unusual snubber failure mode AC Source HP6813B ?

 

That's perfect, thanks a heap Askild :-o)

I aided keysight first head office in USA for that but, instead the 'applications' engineer reminded me it was out of service and as it was upgraded to 6813B some years ago from the 6813A including all the extra DSP for harmonic flicker tests etc it was still registered as the A version. Whereas keysight in Australia calibrated it as the B version and added the correct front panel id sticking etc.

Your 3rd edition appears spot on for the A9 output filter, which appears intact though the reverse diode variance on the FETs seems 1% variance when I'd expect lower than 0.5% - not surprising as they are date coded 0425. All gate impedances better than 600 Meg Ohm.

Looking for two sets of IRF 450 TO-204AA devices ie 8 each total 16 or batch of 20, though at least one set plus two spares all same date code would be ok. Infinion (used to be international rectifier) list them as 'Active' and afaik some milspec equipment in USA still use them but, qualified retailers list them as obsolete :-(
I guess I could replace with later irfp devices but, fiddly as heatsink not compatible, though can be worked around. Would need to ensure gate impedances matches so no introduced ringing which could compromise gate breakdown...

It troubles me? though upon close inspection of heatsink minimal if any silicone thermal paste & one side only, cracked TO-3 mica insulators and very odd misalignment of heatsink to PCB such that (only) the air gap between each to-3 devices leads as little as just under a mm. Fortunately though MOSFETs socketed :-)

So will be sleeving the leads & replacing all insulators and new silicone thermal paste as old silicone paste can be compromised via bacteria or fungi - humidity related. Fortunately heatsink floating (no warning sticker on it though), on insulated thermoset blocks so devices not ground referenced to AC coupling of Drain or Source etc. What an interesting set of circumstances, still awaiting feedback from Infineon on equivalent MOSFETs if there's no existing stock. I have been told Infineon occasionally run a batch to restock for the milspec supporting USA military service. The IRF 450 part of their HiRel range and offer a Rad Hard option too and listed as still Active.

Next is to look at all the components which drive the A7 inverter MOSFETs, seems same in 3rd edition as 4th edition. I'm now curious how compatible the later 4th edition A9 output filter (plastic pack MOSFETs) is with the other modules especially A7 inverter from early 2000s A or B versions which used metal can MOSFETs.

If anyone has IRF 450 eg 20 off and can confirm static safe storage and static safe shipping and all same date code or at least 10 each same code then please email or message through here, thanks?

Thanks again for your link spot on, all the best for now, cheers

Regards

Mike Massen
Perth, Western Australia
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

Understand where you want to live and what's there for you.

Not everyone would wish to live where you do, and how you do.

Dave's opinion is 100% valid for Dave, Mine is 100% valid for me.

That's why we have at least 50 locations (and more) to live.

Pick your favorite.

I did.


Harvey

On 5/20/2022 7:04 PM, Bruce wrote:
They were talking about moving FROM CO to FL? - I agree with Dav WAVE OFF !


Quoting Radu Bogdan Dicher <vondicher@...>:

Sticking waay OT - apologies for my obtuse grasp of the context - are you
guys talking about FL, or CO?

On Fri, May 20, 2022 at 1:20 PM Lothar baier <Lothar@...>
wrote:

Flightcases if you can find them
On May 20, 2022, at 14:35, Bruce via groups.io <bruce=
[email protected]> wrote:

?Not to mention the political climate in some sections of the state.
Delightfull governor, etc.

Cheers!

Bruce

Quoting Dave McGuire <mcguire@...>:

On 5/20/22 15:06, Maurice Smulders wrote:
I'm looking at a move from Colorado to Florida,
? WAVE OFF, WAVE OFF!

? I nearly didn't escape that godforsaken place with my sanity and
career intact.

? Add to that, air conditioning 12 months out of the year, regular
equipment loss due to lightning, and absurd electricity prices...I really
don't know why anyone lives there anymore.

and have quite some equipment to ship in my moving container
(PODS or
equivalent). I am wondering what the best way is to safely ship a HP 16702B
Mainframe with some cards in it. I haven't taken off the plastic bumpers
off the cards, they haven't caused issues in Colorado - but wouldn't be
surprised if they are potentially/likely in FL. Most of my moving stuff
will likely have to be stored for a few months - so that could be a concern.

Do I remove the cards from the unit and bag'm with desiccant
separately in an antistatic bag, or would removing the cables from the
cards to make the unit as small as possible with nothing sticking out be an
OK solution? Ideas? Or is it safer - to transport it in my car myself?
Which will possibly a size problem, it's just a Honda Fit.

Suggestions? Recommendations?
? Been there, done that, many times, with hundreds of instruments.

? Definitely remove the cables, but the safest place for those
cards to
travel is in the instrument.

? Rack-mount test equipment is best moved on its side, lined up
against
the wall of the truck/container/etc.? Optionally tuck moving pads or
cardboard between them.? Do whatever you have to do to immobilize them.

? And keep ibuprofen handy. ;)

??????????? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

You all make it hard to resist responding.
100% agree on lightning and 100% humidity and then mold. Grows all sorts of places. With respect to instruments like the 3336 and such they are very sturdy and when I moved a lot of my test equipment I stacked as need to fit into the car. Padding as needed so fromnt panels did not get scraped. With respect to the 16702 thats a tough one but I favor cards in the gear. Nothing worse then mixing a card up or cracking a socket or lastly old cables simply break. Co to FL is quite the trip.
Regards
Paul
WB8TSL
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

They were talking about moving FROM CO to FL - I agree with Dav WAVE OFF !


Quoting Radu Bogdan Dicher <vondicher@...>:

Sticking waay OT - apologies for my obtuse grasp of the context - are you
guys talking about FL, or CO?

On Fri, May 20, 2022 at 1:20 PM Lothar baier <Lothar@...>
wrote:

Flightcases if you can find them
On May 20, 2022, at 14:35, Bruce via groups.io <bruce=
[email protected]> wrote:

?Not to mention the political climate in some sections of the state.
Delightfull governor, etc.

Cheers!

Bruce

Quoting Dave McGuire <mcguire@...>:

On 5/20/22 15:06, Maurice Smulders wrote:
I'm looking at a move from Colorado to Florida,
WAVE OFF, WAVE OFF!

I nearly didn't escape that godforsaken place with my sanity and
career intact.

Add to that, air conditioning 12 months out of the year, regular
equipment loss due to lightning, and absurd electricity prices...I really
don't know why anyone lives there anymore.

and have quite some equipment to ship in my moving container (PODS or
equivalent). I am wondering what the best way is to safely ship a HP 16702B
Mainframe with some cards in it. I haven't taken off the plastic bumpers
off the cards, they haven't caused issues in Colorado - but wouldn't be
surprised if they are potentially/likely in FL. Most of my moving stuff
will likely have to be stored for a few months - so that could be a concern.

Do I remove the cards from the unit and bag'm with desiccant
separately in an antistatic bag, or would removing the cables from the
cards to make the unit as small as possible with nothing sticking out be an
OK solution? Ideas? Or is it safer - to transport it in my car myself?
Which will possibly a size problem, it's just a Honda Fit.

Suggestions? Recommendations?
Been there, done that, many times, with hundreds of instruments.

Definitely remove the cables, but the safest place for those cards to
travel is in the instrument.

Rack-mount test equipment is best moved on its side, lined up against
the wall of the truck/container/etc. Optionally tuck moving pads or
cardboard between them. Do whatever you have to do to immobilize them.

And keep ibuprofen handy. ;)

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Keysight VNA Cal Kit definitions webpage is missing

 

THANKS - Appreciated

Quoting Jeff Keyzer <jeff@...>:

I snagged a copy before the site went away.
/g/HP-Agilent-Keysight-equipment/files/VNA%20Calibration%20Kits/VNA%20cal%20kit%20manager.exe

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Bruce
Sent: Thursday, May 19, 2022 3:55 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Keysight VNA Cal Kit definitions webpage is missing

All -
Did I miss something I'm looking for a copy of the CAL KIT EDITOR -
looked at the links that went buy but did not find a copy - does anyone have a copy tot the CAL KIT COEFFICIENTS editor ??

If so, please let me know where.

Cheers!

Bruce

Quoting Jeff Keyzer <jeff@...>:

Caesar,

Thank you so much for making all of this information available for
users of the legacy VNAs. I have used your site at various times over
the years and it has always been very helpful.
Sorry to hear about the hosting issues. I wish I could have grabbed a
copy of everything before it started to disappear, but I'll try to
save a copy of what's left before it's gone forever.

Thanks again, your efforts are appreciated.
Jeff
HP 8640B stiff main tuning

 

I recently fired up my 8640B after a few years of non use and found the main tuning dial almost impossible to turn. After warming up a while it loosened up a bit but still remains very stiff.

I realize there is a problem of the old grease hardening up on the various shafts, as I already had to clean and relubricate the bandswitch gearbox shaft and bearings. The fine tune mechanism also had this problem of hardened grease.

It appears the main tuning shaft of the cavity oscillator is suffering from the same problem. If I look at the tuning shaft where it enters the cavity I can see evidence of hardened grease. But the problem is how can I clean the hardened grease from the shaft and bearing without complete disassembly of the cavity itself?

Does anyone have experience in taking the cavity apart to relubricate the shaft and tuning plunger threads?
Re: Keysight VNA Cal Kit definitions webpage is missing

 

¿ªÔÆÌåÓý

Just a heads up to folks following this thread, the firmware revision history pages for the 8753 are gone as well. ?

?

There¡¯s an archived copy here but sadly the links to the firmware images are broken:

?

Jeff

From: [email protected] <[email protected]> On Behalf Of Jeff Keyzer via groups.io
Sent: Thursday, May 19, 2022 3:37 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Keysight VNA Cal Kit definitions webpage is missing

?

Caesar,

I grabbed a copy of this the other day, thank you. I was hoping to find copies of the various cal kit definition zip files that were formerly hosted on the site, as I've used these in the past, but I have since learned that I can recreate these using the tools that are available.
I've used the 8753 series intermittently for over twenty years and I am still learning things.

Thanks again,
Jeff

Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

FL.

-Dave

On May 20, 2022 4:34:39 PM "Radu Bogdan Dicher" <vondicher@...> wrote:
Sticking waay OT - apologies for my obtuse grasp of the context - are you
guys talking about FL, or CO?

On Fri, May 20, 2022 at 1:20 PM Lothar baier <Lothar@...>
wrote:

Flightcases if you can find them
On May 20, 2022, at 14:35, Bruce via groups.io <bruce=
[email protected]> wrote:

?Not to mention the political climate in some sections of the state.
Delightfull governor, etc.

Cheers!

Bruce

Quoting Dave McGuire <mcguire@...>:

On 5/20/22 15:06, Maurice Smulders wrote:
I'm looking at a move from Colorado to Florida,
WAVE OFF, WAVE OFF!

I nearly didn't escape that godforsaken place with my sanity and
career intact.

Add to that, air conditioning 12 months out of the year, regular
equipment loss due to lightning, and absurd electricity prices...I really
don't know why anyone lives there anymore.

and have quite some equipment to ship in my moving container (PODS or
equivalent). I am wondering what the best way is to safely ship a HP 16702B
Mainframe with some cards in it. I haven't taken off the plastic bumpers
off the cards, they haven't caused issues in Colorado - but wouldn't be
surprised if they are potentially/likely in FL. Most of my moving stuff
will likely have to be stored for a few months - so that could be a concern.

Do I remove the cards from the unit and bag'm with desiccant
separately in an antistatic bag, or would removing the cables from the
cards to make the unit as small as possible with nothing sticking out be an
OK solution? Ideas? Or is it safer - to transport it in my car myself?
Which will possibly a size problem, it's just a Honda Fit.

Suggestions? Recommendations?
Been there, done that, many times, with hundreds of instruments.

Definitely remove the cables, but the safest place for those cards to
travel is in the instrument.

Rack-mount test equipment is best moved on its side, lined up against
the wall of the truck/container/etc. Optionally tuck moving pads or
cardboard between them. Do whatever you have to do to immobilize them.

And keep ibuprofen handy. ;)

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Keysight VNA Cal Kit definitions webpage is missing

 

Excellent! Thank you very much!!

Cheers,
Jeff
Re: Keysight VNA Cal Kit definitions webpage is missing

 

I snagged a copy before the site went away.
/g/HP-Agilent-Keysight-equipment/files/VNA%20Calibration%20Kits/VNA%20cal%20kit%20manager.exe

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Bruce
Sent: Thursday, May 19, 2022 3:55 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Keysight VNA Cal Kit definitions webpage is missing

All -
Did I miss something I'm looking for a copy of the CAL KIT EDITOR -
looked at the links that went buy but did not find a copy - does anyone have a copy tot the CAL KIT COEFFICIENTS editor ??

If so, please let me know where.

Cheers!

Bruce

Quoting Jeff Keyzer <jeff@...>:

Caesar,

Thank you so much for making all of this information available for
users of the legacy VNAs. I have used your site at various times over
the years and it has always been very helpful.
Sorry to hear about the hosting issues. I wish I could have grabbed a
copy of everything before it started to disappear, but I'll try to
save a copy of what's left before it's gone forever.

Thanks again, your efforts are appreciated.
Jeff
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

Sticking waay OT - apologies for my obtuse?grasp of the context - are you guys talking about FL, or CO?


On Fri, May 20, 2022 at 1:20 PM Lothar baier <Lothar@...> wrote:
Flightcases if you can find them
> On May 20, 2022, at 14:35, Bruce via <bruce=[email protected]> wrote:
>
> ?Not to mention the political climate in some sections of the state.? Delightfull governor, etc.
>
> Cheers!
>
> Bruce
>
> Quoting Dave McGuire <mcguire@...>:
>
>>> On 5/20/22 15:06, Maurice Smulders wrote:
>>> I'm looking at a move from Colorado to Florida,
>>
>>? WAVE OFF, WAVE OFF!
>>
>>? I nearly didn't escape that godforsaken place with my sanity and career intact.
>>
>>? Add to that, air conditioning 12 months out of the year, regular equipment loss due to lightning, and absurd electricity prices...I really don't know why anyone lives there anymore.
>>
>>> and have quite some equipment to ship in my moving container (PODS or equivalent). I am wondering what the best way is to safely ship a HP 16702B Mainframe with some cards in it. I haven't taken off the plastic bumpers off the cards, they haven't caused issues in Colorado - but wouldn't be surprised if they are potentially/likely in FL. Most of my moving stuff will likely have to be stored for a few months - so that could be a concern.
>>>
>>> Do I remove the cards from the unit and bag'm with desiccant separately in an antistatic bag, or would removing the cables from the cards to make the unit as small as possible with nothing sticking out be an OK solution? Ideas? Or is it safer - to transport it in my car myself? Which will possibly a size problem, it's just a Honda Fit.
>>>
>>> Suggestions? Recommendations?
>>
>>? Been there, done that, many times, with hundreds of instruments.
>>
>>? Definitely remove the cables, but the safest place for those cards to travel is in the instrument.
>>
>>? Rack-mount test equipment is best moved on its side, lined up against the wall of the truck/container/etc.? Optionally tuck moving pads or cardboard between them.? Do whatever you have to do to immobilize them.
>>
>>? And keep ibuprofen handy. ;)
>>
>>? ? ? ? ? ? -Dave
>>
>> --
>> Dave McGuire, AK4HZ
>> New Kensington, PA
>>
>>
>
>
>
>
>
>
>
>





Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

Lothar baier
 

Flightcases if you can find them

On May 20, 2022, at 14:35, Bruce via groups.io <bruce@...> wrote:

?Not to mention the political climate in some sections of the state. Delightfull governor, etc.

Cheers!

Bruce

Quoting Dave McGuire <mcguire@...>:

On 5/20/22 15:06, Maurice Smulders wrote:
I'm looking at a move from Colorado to Florida,
WAVE OFF, WAVE OFF!

I nearly didn't escape that godforsaken place with my sanity and career intact.

Add to that, air conditioning 12 months out of the year, regular equipment loss due to lightning, and absurd electricity prices...I really don't know why anyone lives there anymore.

and have quite some equipment to ship in my moving container (PODS or equivalent). I am wondering what the best way is to safely ship a HP 16702B Mainframe with some cards in it. I haven't taken off the plastic bumpers off the cards, they haven't caused issues in Colorado - but wouldn't be surprised if they are potentially/likely in FL. Most of my moving stuff will likely have to be stored for a few months - so that could be a concern.

Do I remove the cards from the unit and bag'm with desiccant separately in an antistatic bag, or would removing the cables from the cards to make the unit as small as possible with nothing sticking out be an OK solution? Ideas? Or is it safer - to transport it in my car myself? Which will possibly a size problem, it's just a Honda Fit.

Suggestions? Recommendations?
Been there, done that, many times, with hundreds of instruments.

Definitely remove the cables, but the safest place for those cards to travel is in the instrument.

Rack-mount test equipment is best moved on its side, lined up against the wall of the truck/container/etc. Optionally tuck moving pads or cardboard between them. Do whatever you have to do to immobilize them.

And keep ibuprofen handy. ;)

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: Shipping / Moving HP Equipment HP16702B - and other 19" rack equipment like a 3325B

 

Not to mention the political climate in some sections of the state. Delightfull governor, etc.

Cheers!

Bruce

Quoting Dave McGuire <mcguire@...>:

On 5/20/22 15:06, Maurice Smulders wrote:
I'm looking at a move from Colorado to Florida,
WAVE OFF, WAVE OFF!

I nearly didn't escape that godforsaken place with my sanity and career intact.

Add to that, air conditioning 12 months out of the year, regular equipment loss due to lightning, and absurd electricity prices...I really don't know why anyone lives there anymore.

and have quite some equipment to ship in my moving container (PODS or equivalent). I am wondering what the best way is to safely ship a HP 16702B Mainframe with some cards in it. I haven't taken off the plastic bumpers off the cards, they haven't caused issues in Colorado - but wouldn't be surprised if they are potentially/likely in FL. Most of my moving stuff will likely have to be stored for a few months - so that could be a concern.

Do I remove the cards from the unit and bag'm with desiccant separately in an antistatic bag, or would removing the cables from the cards to make the unit as small as possible with nothing sticking out be an OK solution? Ideas? Or is it safer - to transport it in my car myself? Which will possibly a size problem, it's just a Honda Fit.

Suggestions? Recommendations?
Been there, done that, many times, with hundreds of instruments.

Definitely remove the cables, but the safest place for those cards to travel is in the instrument.

Rack-mount test equipment is best moved on its side, lined up against the wall of the truck/container/etc. Optionally tuck moving pads or cardboard between them. Do whatever you have to do to immobilize them.

And keep ibuprofen handy. ;)

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
24821 - 24840 of 151099