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  1. HP-Agilent-Keysight-Equipment
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Date
Re: HP54810A

 

Yes this thing is a computer....but an old slow one with a small screen. There is a VGA port on the back for larger screen. It uses windows InternetExplorer with an ethernet connection to a router.
I have a 54810 upgraded to 54820, more samples per sec. This is a hardware modification that involved cutting a component. I did not do this myself and you will have to look it up. On boot the unit identifies as a 54820.
There are different OS....Win 95, 96FE and 98, and ME. I think the motherboard and CPU largely dictate the OS.
There are different motherboards used. With different CPUs.
There are different PS used also. It was very nice that the eevblog member sorted one out, but we do not know what PS you have.
The A Drive is either a 20 MB super floppy that uses either special discs or can use regular 1.4 MB discs, or the A drive can be a normal 1.4 MB drive.
Apparently the HD does fail quite a bit. Mine has been replaced with a SSD. This works well but you have to partition the SSD because the OS cannot use a large SSD.? There is a thread here describing some of this, Search for 54810 on this forum. If your HD works I would clone it right away. Make sure that the partitioning is compatible with your system.
The USB does not work as a mass storage but does work as mouse.
This is just MY OPINION and someone else may easily have more knowledge about this.?
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Thank you so much.
F1EKU.
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

I also arrived back home and, after fighting Wordpress a bit (maybe the file is just a little too large), I managed to put it online:



Cheers,
Martin
Re: HP410C mains plug non IEC

 

Hi Robert,
I had a look at what you suggested, IEC60320 "C6" inlet. Indeed this could work. I'll buy a C6 and I'm sure I have a C5 and european plug somewhere. If the fit is not too destructive I will follow your suggestion of an adaptor plate. This looks good, thanks. More on that later I hope.
Renaud
Re: HP410C mains plug non IEC

 

The small C5/C6 IEC inlet and cord set can be fitted in place of the PH163 without modifying the rear panel of the instrument.? So "originality" can be restored if really required. Personally I would not place an original connecotor over electrical safety.
The use of any "homemade" mains connector, however good the build would be illegal in most countries. It is NOT a good idea in any situation. The thought of a 3D printed one is frightening.
A homemade connector is no more original than a C5/C6.

Robert.
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

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Returned home waiting for the CLIP

?

Ciao Gianni

Da: [email protected] [mailto:[email protected]] Per conto di Martin Rickes
Inviato: martedì 14 maggio 2024 15:07
A: [email protected]
Oggetto: Re: [HP-Agilent-Keysight-equipment] HP 8360-Series Sweeper CLIP soon available on KO4BB

?

Oh. I thought it would only take some days.?

I'm back home next week and will upload it on my website for the people in the group to have it.

Cheers,?
Martin


Privo di virus.
Re: HP410C mains plug non IEC

 

Bonjour cher Renaud, bravo pour le restoration les equipage HP410 ancien.

1. The oval 3 pin was common in 1950s..1960s before the IEC mains design used now.

2. Belden and other USA cable mfg made the exact power mains cable.

3. As the IEC is larger dimension and the chassis are steel, we found it a big job to adapt the old oval cutout to a moodenr IEC.

4. Easier to permanently attach a mains cable with no interlock socket.

5. In USA we had dozens of these old mains cables.

Alors, Nous pouvons appeler, je suis a Paris


Amicalment,

Jon
Re: HP410C mains plug non IEC

 

Thanks to you all for those very extensive replies.
Tom's link is perfect of course, thanks. Then a little search about "Belden PH-163" shown some other guys who needs them for different HP, Tek or other makes. With not much success though, the part is scarce! I believe I'll make one myself (sorry no 3D printing but machining not a problem) or I will indeed change to IEC though I would prefer to keep it period. About the "line/neutral" sense I never cared so I wont.
About the prefix number, yes Factory I know it's the design date but it's simpler to assimilate that to build date though it's not correct indeed. The other HP devices I'm proud to own have the "middle" letter so I learned something again! Incredible all one can learn in old age!
Best to all,
Renaud
Re: 8340B option removal

 

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Can you scan the schematic that shows the jumpers, that would be a huge benefit to everyone. The schematic that I have doesn’t show it.?
The attenuator option, adding or deleting the attenuator, is not just the plug, you also need to change the cal constant for attenuator configuration. I have two on the bench right now and after we return from our travels I’ll try installing an attenuator and not changing the cal constant. From memory (which may not be 100% these days) the attenuator didn’t work until the cal constant was changed.?
Steve



On May 21, 2024, at 7:40?PM, Bruce via groups.io <bruce@...> wrote:

?I would be interested in the result.? As I remember, the jumpers are labeled option (or option configuration) an the A60 schematic.

I do know that the attenuator option is controlled by the attenuator plug on the RF board.

Cheers!

Bruce

Re: 8340B option removal

 

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That is odd as there is not a standard option to remove the fm capability.
Steve



On May 21, 2024, at 6:41?PM, saevar via groups.io <saevartj@...> wrote:

?I got the notification when I tried to select fm modulation.

Re: 8340B option removal

 

I would be interested in the result.? As I remember, the jumpers are labeled option (or option configuration) an the A60 schematic.

I do know that the attenuator option is controlled by the attenuator plug on the RF board.

Cheers!

Bruce
Re: Flea Market 410B

 

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Yeah. ?I would’ve preferred not to do it that way but flat head stainless steel Philips head screws look nice enough. ?

Thanks,
Barry

On May 21, 2024, at 6:21 PM, jerry-KF6VB <jerry@...> wrote:

?Did you remove the handle end brackets?? They're riveted to the case.?? Seems like it would be hard to do a neat job without
removing them.

Re: Flea Market 410B

 

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Yep. I think I may have one of each type of probe plus an extra set of NOS probes.?

Thanks,
Barry - N4BUQ

On May 21, 2024, at 5:43 PM, jerry-KF6VB <jerry@...> wrote:

?Guess you're right, Barry.?? I see a post from 18 years ago where you were complaining that an 2-01C tube wouldn't fit
in your probe. :).

?????????????? - Jerry

Re: 8340B option removal

 

I got the notification when I tried to select fm modulation.
Re: Flea Market 410B

 

I have used both buckle handles (can't find them now at Brettuns) and just strips of leather fastened with rivets to make loops around the brackets. Both work. I did not want to remove and replace the staples (or brackets). For me, I don't care if the thing is perfectly original, I just want it to be practical.

On 5/21/2024 4:21 PM, jerry-KF6VB wrote:
Did you remove the handle end brackets?? They're riveted to the case. Seems like it would be hard to do a neat job without
removing them.
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
Re: Flea Market 410B

 

Did you remove the handle end brackets?? They're riveted to the case.?? Seems like it would be hard to do a neat job without
removing them.
Re: Flea Market 410B

 

Guess you're right, Barry.?? I see a post from 18 years ago where you were complaining that an 2-01C tube wouldn't fit
in your probe. :).

?????????????? - Jerry
Re: Flea Market 410B

 

Got it calibrated on the 1VAC and 3VAC scales.? Apparently, you have to zero the AC whenever you change scales.? Can have
a big effect on the reading.

? Luckily, I have an HP34401A to check it against.

? I just splurged on a pair of 2-01C tubes on Ebay.? So I don't have to worry about spares.? Pretty sure that 12AU7's will
be available for a long time.
Re: Flea Market 410B

 

I don't think that's correct.? Aside from the heater voltage difference, the 2-01C and the EA53 are mechanically different.

Barry - N4BUQ

From: "jerry-KF6VB" <jerry@...>
To: "HP-Agilent-Keysight-equipment" <[email protected]>
Sent: Tuesday, May 21, 2024 4:34:30 PM
Subject: Re: [HP-Agilent-Keysight-equipment] Flea Market 410B
I believe that the two diodes are interchangeable - just one is 5V filament, the other 6.3.? There's a big wirewound pot to set
the voltage.

? The replacement electrolytic is taking its time to arrive - so just for yuks, I hooked up the existing one to my Sprague TO-6.? It
seems to be reforming nicely.? So far, down to 170 microamps at 450V.

OK, the replacement cap got here.? Breathtakingly tiny.? Installed.?? The instrument is dead nuts on for DC - but too sensitive
on AC.? 1V in => it displays no less than 1.5V on the 3V scale.? I wonder if the Philco folks modified it to read correctly at low frequencies with the low filament voltage?? Gotta go read the schematic.

Re: Flea Market 410B

 

I believe that the two diodes are interchangeable - just one is 5V filament, the other 6.3.? There's a big wirewound pot to set
the voltage.

? The replacement electrolytic is taking its time to arrive - so just for yuks, I hooked up the existing one to my Sprague TO-6.? It
seems to be reforming nicely.? So far, down to 170 microamps at 450V.

OK, the replacement cap got here.? Breathtakingly tiny.? Installed.?? The instrument is dead nuts on for DC - but too sensitive
on AC.? 1V in => it displays no less than 1.5V on the 3V scale.? I wonder if the Philco folks modified it to read correctly at low frequencies with the low filament voltage?? Gotta go read the schematic.
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