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Date
Re: HP 3310A Repair Advice

 

Hi Antonio,
?
Thank you for the thought.? I did see a mention of this in an old posting here from around 2016 IIRC.? I did check all of the PCB connections around the previous repair to the board in case someone was sloppy but I could not find any issues.
?
I'm sure there is a clue from the behavior of the unit presently -- specifically how the triangle generator ramps up but then edges down when it (A1TP4) hits +6.5V (should be +5V).? And how the bottom of the waveform varies in voltage depending on the frequency dial setting (current source/sink setting).
?
If you're curious, I've uploaded waveforms from various test points over on eevblog where I've another thread on the unit: ?
?
Re: HP8595E - SYTF

 

Haha, that looks a lot like my collection of Lauer tips. Hope you have the right size already. Good luck.?? Ed
Re: HP8595E - SYTF

 

Ed,?

great idea !?

adri


Il Mar 1 Ott 2024, 22:08 ed breya via <eb=[email protected]> ha scritto:
Or how about "close enough" capillary tubing. Check this out:
?
?
HT-22X seems pretty close, with some clearance inside and out, versus 0.5 mm rod and 0.75 mm hole.
?
Ed

20241002_012120.jpg

Re: HP8563E strange behavior

 

¿ªÔÆÌåÓý

I had a similar issue but with a different peace of HP equipment. I have left a link to a YouTube video that shows the behavior. In my case it was a ground line issue. I had a power monitor that was doing some power line networking and causing some very strange issues with a low frequency Spec an. Especially if it is moving around the noise is not staying still this could be a grounding issue with the building wiring.

?

It was also causing some issues with an AA501A distortion analyzer and some of my other sensitive equipment.

?

Video Link:

?

?

Zen

?

From: [email protected] <[email protected]> On Behalf Of saevar via groups.io
Sent: Tuesday, October 1, 2024 6:02 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP8563E strange behavior

?

Nobody has an idea?
Re: HP8563E strange behavior

 

Nobody has an idea?
Re: HP8595E - SYTF

 

Or how about "close enough" capillary tubing. Check this out:
?
https://componentsupplycompany.com/product-pages/hypodermic-metric.php
?
HT-22X seems pretty close, with some clearance inside and out, versus 0.5 mm rod and 0.75 mm hole.
?
Ed
Re: HP 5343A SMA ¡°Insert¡±

 

Thank you, Greg, for the kind and thorough reply! I'll dig around and see what I can find.
Re: HP 5343A SMA ¡°Insert¡±

 

I will take a look tonight when I get home, both at the manual and at the counter itself.? Mine has a male 3.5 mm connector on the 500 MHz to 26.5 GHz side.? I haven't looked inside for a couple years.? It wasn't working when I got it, but one of my friends helped me swap out cards until we found which one was bad.? We didn't look at the input section.? Good luck!? ? ? ?Jim


On Tue, Oct 1, 2024 at 10:53 AM, Greg Muir via groups.io
<big_sky_explorer@...> wrote:
After a considerable search the only possible item I came up with in regards to a SMA item involves a relatively undocumented Option 006 for the 5343A which involves a input protection limiter for the 26.5 GHz input (affords protection to +39 dBm).? Given virtually no room to install this option it is unclear how it would fit between the N connector and the input to the sampler assembly U1.? I suspect that there has to be a significant change to the mounting of the sampler to move it farther back on the side rail to open a gap for the protector.

I¡¯ve never seen a 5343A with this option.

The same Option 006 can be used on the 5342A counter but cannot be used if Option 005 (frequency extension to 24 GHz) is installed.

Greg
Re: OT: a tale of two chargers.

 

Never trust a geek, unless you have live chickens to behead!

Tell these morons that the supplies are regulated voltage, not current. Then find a Nwrd who understands Electronics.

It seems like all those ormer Radi Shack sales drones went to work as Geeks. You have questions? We gon't know the answers!

The last time I was at a BB, the 'clerk' informed me that Windows 95 was the first version. I sighed and told him it started with V 1.0, and was just a menu system. He wasn't able to search google properly and isitd I was talking about V 10. I' highly alergic to stupid, so I never went back.
Tere was a two way radio shop in Taveres, Florida. The owner had a 386 based computer o program business radios. BB had 'fixed it' It stil didn't work rightt, so I opened it up. They had installed hree IDE controllers, and adn't disabled the onboard port so it was very slow and corupted the software. I pulled the extra cards, and replaced the 40 pin cable? wich was the original problem. They shouldn't be allowed near any computer, except their own.

IOIf there are typos, I cant see the screen well enough to find them.


On Mon, Sep 30, 2024 at 7:11?PM Harvey White via <madyn=[email protected]> wrote:
This is a OT, but I thought I'd bring it up for comments:

It was the best of chargers, it was the worst of chargers.........

Laptop is an ASUS Q540V sold (at one time) by Best Buy.

I needed an extra charger, so I tried the usual suspects. (working in
two places and easier to have two chargers).? Charger is 20 volts, 7.2
amps, 150 watts.

Tried ASUS.? Nope, not on their website.

Tried Newegg, chinese clone.

Tried Amazon, chinese clone with checkered background and heritage.

Then decided to try a universal adaptor of known parentage....

Targus (have had them):? not good enough

Insignia <sigh>, ok, they had one.? Stopped by a store in Brandon,
Florida.? Ok, they had it, but they don't recommend it.

OK, why not?

"It could ruin your battery by overcharging it.? You need a 150 watt
charger."

how does this overcharge happen?

"Well, it'll put too much power in the battery, so I can sell it to you,
but I don't recommend it."

Ok, put it back on the rack and then went to the Geek Squad.? Got the
same reasoning.

So I asked suppose I have a gallon of water, and I only drink 3 quarts
of it, what happens to the remaining quart?

"Well suppose someone forces you to drink that extra quart?"

I told him that I thought that the electronics didn't work that way, and
the laptop charging chip would only draw as much as it needed and would
automatically not overcharge the battery.

They remained unconvinced.? I decided not to reward them by buying
anything.? They suggested batteries plus.... ok

After getting the wrong directions to that store, I found that BP only
had a 120 watt max charger.? OK....

I was the third person that day that may well have had the same problem.

time passes.......................................

On the theory of "better the devil you know than the devil you don't".......

I went down to the local BB store.

I went to Geek Squad first.

The young technical genius gave me the same story....? I asked him to
find out from someone why this scenario was true (specifically, the
damage the battery and laptop).

Got the same answer from a more experienced (?) technician.

Decided to take a chance, and went to the sales kiosk.? They said that
over would be more or less OK, and under would be a problem.

On the box, the ratings say laptops *up to* 180 watts.

I thought I saw Rod Serling leaning against a wall and smiling.

Harvey
Re: 8350A RPG 5060-9444 questions

 

¿ªÔÆÌåÓý

?

Here is the detail of a repair done in 2022, of an RPG in my 8350B. Maybe it can be useful to you.

?

Yves

------------------

?

Hi, just a story about HP/Agilent 5060-9444 5 VDC Rotary Pulse Generator RPG +, replace LAMP by LED.

?

?

I had the opportunity to get an 8350B with an 83595A (0.01-26.5GHz). This device had to be stored for a few years. In short, I had to partially disassemble it to remove dust and some traces of corrosion. I changed the battery of course and fixed several problems like the front panel which was partially working. I had to do a complete alignment, now everything is OK.

The 83595A seemed to be in better shape, but the RPG was not working. I removed it from the module and opened it up...after examining the circuit, it was easy to see that the lamp was burned out. I studied the module and how it worked, so I tried a repair by replacing the lamp with an LED.

?

I found that this little module was quite ingenious. All the parts are on the top of the PCB and underneath 2 photo detectors in a dark room, where there are two plastic sheets in the shape of a circle, a hole followed by another one on top translucent. A small metal piece bent at 45 degrees, serves as a support for the lamp but also as a reflector to direct the light through two tunnels to the photo detectors. The two tunnels have screws allowing them to partially obstruct the light, allowing the two circuits to be balanced. If the light intensity is sufficient, this will trigger the gate 7413 (Schmitt Trigger). When the light levels are balanced by the screws, the duration of the pulses, for a constant speed, should be approximately the same.

?

Using an LED recovered from a defective LED bulb, which was the perfect size to fit and fill the rectangular area where the bulb was located, I was able to determine the LED current for minimum operation of the RPG. The currents were 7mA for one side, and 11 mA for the other. I tested up to 30 mA for proper operation. I reduced it to 20mA, found the resistance needed for this current in the LED at 5V. The LED dropped 2.721V. I balanced the circuit with the screws and closed everything. Now the RPG of my 83595A works correctly. I will just have to make the necessary alignments for optimal operation.

?

?

-Yves

?

?

De?: [email protected] <[email protected]> De la part de bumbo.chinelo@...
·¡²Ô±¹´Ç²â¨¦?: 1 octobre 2024 13:51
??: [email protected]
Objet?: [HP-Agilent-Keysight-equipment] 8350A RPG 5060-9444 questions

?

Hello

?

After fixing the power supply and multiple Bob West springs (how I hate them) all I have to do (haha optimism) is getting two RPGs to work. Both had the lamp burnt out, but after long searches on Taobao I managed to find almost identical ones; however nothing comes out of the 7413. I removed both transistors and they don't seem too bad; havn't tested yet the 7413

?

Here are some questions for the experts

?

1) the two torx next to the lamp regulate amount light that reaches the photo diodes? I've tried to adjust them but the amplitudes are quite different (see attached photo)

?

2) the two transistors are marked 4-071M 041 (M is Motorola logo) . Can 2N2222 be a replacement since they don't appear in any list of HP components

?

3) What could be a replacement for the photo diodes?

?

Thank in advance for any suggestions

?

?

?

?

RPG schematic.PNG
RPG.png

Re: HP 5343A SMA ¡°Insert¡±

 

After a considerable search the only possible item I came up with in regards to a SMA item involves a relatively undocumented Option 006 for the 5343A which involves a input protection limiter for the 26.5 GHz input (affords protection to +39 dBm). Given virtually no room to install this option it is unclear how it would fit between the N connector and the input to the sampler assembly U1. I suspect that there has to be a significant change to the mounting of the sampler to move it farther back on the side rail to open a gap for the protector.

I¡¯ve never seen a 5343A with this option.

The same Option 006 can be used on the 5342A counter but cannot be used if Option 005 (frequency extension to 24 GHz) is installed.

Greg
8350A RPG 5060-9444 questions

 

Hello
?
After fixing the power supply and multiple Bob West springs (how I hate them) all I have to do (haha optimism) is getting two RPGs to work. Both had the lamp burnt out, but after long searches on Taobao I managed to find almost identical ones; however nothing comes out of the 7413. I removed both transistors and they don't seem too bad; havn't tested yet the 7413
?
Here are some questions for the experts
?
1) the two torx next to the lamp regulate amount light that reaches the photo diodes? I've tried to adjust them but the amplitudes are quite different (see attached photo)
?
2) the two transistors are marked 4-071M 041 (M is Motorola logo) . Can 2N2222 be a replacement since they don't appear in any list of HP components
?
3) What could be a replacement for the photo diodes?
?
Thank in advance for any suggestions
?
?
?
?

20241001_180541.jpg

Re: Agilent 16700B / 702B correlation with DSO9000 Infiniium scopes

 

Thanks Philip. Will do that.
Re: Anyone able to do GC or GC-MS on Hp ThinkJet Black ink ( for the Hp ThinkJet 2225 printer; Hp 9226a Or Hp 51604a ink cartridges ) ?

 

And it will likely be done on an Agilent/HP GC-MS (6890s are a workhorse)!! They are still the best gas chromatographs out there IMO.
Re: HP8595E - SYTF

 

How about rolling thin Cu or Al foil around it, until built up enough, at least for experimenting? Ed
Re: Anyone able to do GC or GC-MS on Hp ThinkJet Black ink ( for the Hp ThinkJet 2225 printer; Hp 9226a Or Hp 51604a ink cartridges ) ?

 

You'd likely need to perform GCMS to resolve all components within the ink.? When working with unkowns, GC is a bit more difficult.? Generally you need to know the analyte of interest.? And you need to have a std for it to match the retention time.? With GC-MS you can reference libraries for specific mass spectrums.? There would also need to be some method development involved.? They would need to find the right GC column, the correct solvent to dissolve the sample in, and sample preparation.? Then of course the method development required for the GC program run itself.? Unless of course you find someone who works in lab analyzing similar types of compounds - this will already be in place.? Would be an interesting project for an analytical chemist (that is what I used to do prior to my current job) but I no longer have access to that instrumentation.??
Re: Agilent 16700B / 702B correlation with DSO9000 Infiniium scopes

 

You might want to try this group: ? [email protected]
Re: Ink ( recipe ) for Hp 2225 Think Jet printer ?

 

?
Gleaned from the rear of *some* (not all) of the product boxes ( product warning ):
?
?Hp 51604A? Thinkjet black ink cartridge:
?? (? 3.0mL to 3.7mL ; 0.13 fOz)
?
2-Pyrrolidone
Ethelyne Glycol
Food Back 2
Acid Salt 3
water
?
UFI: 6UE7 - CQTV -A205 - GHXV
?
Can anyone post the MSDS? (Materials Safety) data sheet ( inserted into product box ),
-- which might have additional information ?
?
thank you,
rick
?
Re: HP 5343A SMA ¡°Insert¡±

 

Brad,

The 26.5 GHz input N connector connects directly to the input of the sampler assembly U1. The 500 MHz BNC input is a fused connector of which the body mounts directly to a printed circuit board on the rear of the front panel. For an illustration of the BNC assembly see page 6-3 of the service manual P/N 05343-90007

Jim,

I screwed up by calling out page 118 in the service manual in my last message. I had a HP parts catalog open at the time and noted that page instead. The actual page is 6-35 listing the only SMA connector found relating to the sampler driver assembly.

Greg
Re: OT: a tale of two chargers.

 

He's been told to match numbers and if they aren't exact, then it won't work.? That's it, thanks.

Sad...

Harvey

On 10/1/2024 10:59 AM, Matt Harris wrote:
That brings PTSD memories of the insane lack of knowledge often overheard spewing from the "salesperson" at the local Best Buy and Circuit City stores in town when the US was standing up all the new digital TV transmitters.
I wonder how this short circuit you encountered would explain what would happen having a home with a 48,000 watt power service feeder that only has a 60 watt bulb turned on inside.
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