¿ªÔÆÌåÓý

  1. HP-Agilent-Keysight-Equipment
  2. Messages
Expanded Topics Messages
Date
Re: HP-IB connector screws

 

OK, so you're Ian, but your "handle" on this group is unpronounceable.? Why is that?? ? A curious Jim Ford, Laguna Hills, California, USA?


On Wed, Sep 18, 2024 at 4:31 PM, dbztuzujdhgtrjzthxh via groups.io
<dbztuzujdhgtrjzthxh@...> wrote:
Hi Joel, as above, these nuts are available in Metric and Imperial.?
Fortunatly HP (might have been industry standard) made it easy to tell apart:
? Black = Metric
? Silver = Imperial

Taken from the 5334 manual

Inline image

73
ian
Re: Introduction

 

¿ªÔÆÌåÓý

Jim,

?

My lab is 16 feet deep by 8? feet wide.

The problem is more the width.

And there is indeed a lot of equipment, I just counted them, I have 76 HP/Agilent/Keysigh equipment, and 14 Tek/B&K/R&S/Krohn-Hite/Huntron.

I had never counted all that, that's for sure, I'm crazy.

?

But all this equipment has been used for my work, I was self-employed for 27 years as a sr. RF & Analog Designer and before that, 22 years for a cable company.

When the company decided to close, they made me an offer to sell me a lot of equipment at a ridiculously low price.

I decided to accept and take advantage of this opportunity to try my luck as a self-employed person, and it was a very good decision.

I was able to work on extremely diverse and very enriching projects.

?

In short, in 2023 I had decided to retire, and finally in 2024 I accepted a one-day-a-week job in instrumentation, the same job when I started my career.

I wanted to become a Geologist (Exploration Geology), but finally chance would have it that I worked in the field of electrical engineering.

?

A lab is never big enough for passionate people, so we take up all the space we can ?

?

Yves

?

De?: [email protected] <[email protected]> De la part de Jim Ford
·¡²Ô±¹´Ç²â¨¦?: 18 septembre 2024 17:24
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] Introduction

?

Wow, I'm impressed, Yves!? You certainly have a lot of space, and a lot of gear to fill it up!? ? ?Jim Ford?

?

On Wed, Sep 18, 2024 at 2:16 PM, Yves Tardif

<yves_tardif@...> wrote:

Hi Jim,

?

Here is my lab when it is not too messy.

I have another section containing about ten instruments near my work desk. Small space, but enough to have fun.

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?


?

?

?

De?: [email protected] <[email protected]> De la part de Jim via groups.io
·¡²Ô±¹´Ç²â¨¦?: 17 septembre 2024 23:26
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] Introduction

?

I'd love to see other benches! On another forum I've seen some "benches" that were to die for personal warehouses of wonderfully organized storage and spacious workbenches.

Some of the minimalist benches were exceedingly clever uses of small spaces and very inspirational too.

?

Jim
Re: Introduction

 

¿ªÔÆÌåÓý

This has morphed into an interesting thread! Here is my modest shop, built into the sliding-door closet of my home office. Close the door and it is out of sight. I see lots of familiar HP and Tek equipment in others' photos.

Larry
Sent via the Samsung Galaxy S10


-------- Original message --------
From: Jeff Anderson <jca1955@...>
Date: 9/18/24 3:40 PM (GMT-08:00)
Subject: Re: [HP-Agilent-Keysight-equipment] Introduction

Great to see others' labs!
?
Here are my two labs -- the first (my main lab) is in my garage here in Silicon Valley.? Besides what you see, there's a whole bunch of "gee, maybe I could use that in a project," or "that'd be fun to get working," stuff filling every available surface, picked up at various swap-meets and the local surplus stores (now sadly vanished) over the years.? I'm about to hit 70 and have realized that I'll never use a lot of it in the time remaining -- tempus fidgits, after all.? And so I've been carting it off to the local swap-meet to sell.
?
?
The second image is my more recently assembled home-away-from-home lab, again, in a corner of that house's garage.? ?(On the bench is an HP 3430A Nixie-tube DVM that I'm working on).??
?
?
- Jeff, k6jca
Re: HP-IB connector screws

 

Hi Joel, as above, these nuts are available in Metric and Imperial.?
Fortunatly HP (might have been industry standard) made it easy to tell apart:
? Black = Metric
? Silver = Imperial

Taken from the 5334 manual

Inline image

73
ian
Re: Introduction

 

Wow, I'm impressed, Yves!? You certainly have a lot of space, and a lot of gear to fill it up!? ? ?Jim Ford?


On Wed, Sep 18, 2024 at 2:16 PM, Yves Tardif
<yves_tardif@...> wrote:

Hi Jim,

?

Here is my lab when it is not too messy.

I have another section containing about ten instruments near my work desk. Small space, but enough to have fun.

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?


?

?

?

De?: [email protected] <[email protected]> De la part de Jim via groups.io
·¡²Ô±¹´Ç²â¨¦?: 17 septembre 2024 23:26
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] Introduction

?

I'd love to see other benches! On another forum I've seen some "benches" that were to die for personal warehouses of wonderfully organized storage and spacious workbenches.

Some of the minimalist benches were exceedingly clever uses of small spaces and very inspirational too.

?

Jim
Re: HP 5086-7906 YTO

 

¿ªÔÆÌåÓý

Hi Adri,

?

I had borrowed a faulty 8595E from a friend to study the second converter.

?

The problem with this 8595E was that the AMP CAL was not working and displayed an error message pointing to option 130 (narrow resolution bandwidth).

Looking at the calibration constants, I noticed the calibration values ??were very far apart for some filters.

After checking, I had no choice but to realign the filters.

I followed the procedures and the problem was solved.

This Spectrum had no hardware defects and option 130 had no problem.

So, I did the full calibration, and voila, this 8595E now has a second life.

?

Have you managed to get your 8595E working properly again?

?

Before filters adjustments at left, and after at right.

?

Yves

?

?

?

De?: [email protected] <[email protected]> De la part de alfa beta
·¡²Ô±¹´Ç²â¨¦?: 13 septembre 2024 19:14
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

?

Yves, thanks for the info about the 2nd converter? After having installed the one bought on the bay?I checked?the original one?on the bench and it?seems to work normally

?

I'm starting to suspect the blindness on the LOW BAND was due to a bad connection I did when the repair was suspended years ago ¡­ ouch !

?

Meanwhile I'm investigating?a certain deafness on the HIGH BAND (from 2.4 to 11 dB)

?

I measured the insertion loss of the SYTF I had realigned and found figures?from 5.2??to? 8.5 dB on the range? 3 to 6 GHz

?

These figures?seem not too bad?and?the AMP CAL routine should be able to recover them ...unless there is some hardware problem in the generation of the tuning current (I performed the insertion loss measurements by manually tuning? with an external precision power supply)

Will see ...

Adri

?

?

?

?

----- Messaggio originale -----

Da: Yves Tardif via groups.io <yves_tardif@...>

Rispondi a: <[email protected]>

Inviato: 13/09/2024 07:51:28

Oggetto: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

Hi Adri,

?

A friend of mine had a faulty 8595E, the problem comes from the option card 130.

But I took the opportunity to look at the second converter, so here are some details on this module.

?

Regards

Yves

?

De?: [email protected] <[email protected]> De la part de alfa beta
·¡²Ô±¹´Ç²â¨¦?: 10 septembre 2024 16:26
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

?

hello Yves,
I received the 2nd converter and, after testing it on the bench (if you are interested I will give you the two test configurations) I installed it and voil¨¤, the machine is back to working like in the old days
It passes the amplitude and frequency calibrations and the confidence test without any problem
As it happened before the death of the YTO the analyzer still has a certain "deafness" after 5.5GHz
By virtue of the alignment of the spheres that I did a few weeks ago The defect is milder than it was then and I think it is due to a sub-optimal loss of insertion of the SYTF A3A2

?

As proof of the "deafness", while all the calibration routines, including the CAL YTF routine are performed without problems, the CAL MXR is not completed and gives the message CAL: HARMONICS INSUFFICIENT In fact I attach a screen of the 300MHz calibration signal from which it would seem that the very last harmonics are missing
Thank you in advance if can you send the analogous screen of your analyzer
In a few days I will receive a more reliable 6GHz RF generator than the current one and I will use it to try to perfect the alignment
Yves, I think that now you can reassemble and close your analyzer :-) Many thanks for all the measurements that you sent me and that were useful to trace the problem!
Adri

?

----- Messaggio originale -----

Da: Yves Tardif via groups.io <yves_tardif@...>

Rispondi a: <[email protected]>

Inviato: 08/09/2024 01:35:49

Oggetto: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

Hi Adri

?

Here are the measurements connected to the first 2 converters as a reference.

?

For the second converter I get a voltage of -1.678V instead of -3.5V as written in the service manual, I would say that we have similar voltages for this particular point.

It seems far from the nominal point, but there may be an error in the manual.

?

You are close to the goal, and this module may be repairable if there is no micro circuit, I have never opened a second converter in this series, but it is a possibility.

?

When you open your second converter, send me pictures, I'm curious.

?

Yves

De?: [email protected] <[email protected]> De la part de alfa beta
·¡²Ô±¹´Ç²â¨¦?: 6 septembre 2024 19:30
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

?

dear Yves, I didn't realize that you had made the measurements expressly to help me! I owe you then a double (even triple) thanks! Especially considering the fact that the front end of this instrument is really very dense, complicated and delicate!

After my last email, in addition to doing the (essentially mechanical) intervention on the SYTF, I continued to check the input signal through the various sections by alternately injecting 300MHz @-20dBm and 5GHz @0 dBm

The signals were found to be in specification up to the A3A9 bandpass (where the two paths join to form the intermediate frequency of 321.4MHz). At this point I could see the 5GHz signal (converted), present at that point at -47dBm (the specification says -43/-56dBm).
Instead, no trace of the 300MHz input signal


Investigatine?the second converter A3A4 in more depth
I checked?the signals at its input


On J1 there is 3.9214GHz at -46dBm? --->OK
On J3 there is 321.4MHz @ -37.7dBm? --->OK
On J4 I did not check 600MHz @-1dBm but the fact that the converter works in band 1 tells me that the oscillator is present and is in specification


The power supply is quite OK (5V are actually 4.75; 10V are 9.98 and the DC that controls the internal switch that should be +15V? (band 0) and -3.5V?(band 1) is actually +14.60V and -1.35V

?

This last value is rather far from the nominal and would have worried me BUT band 1 is exactly the one that works

Conclusion: it would seem that the culprit is the second converter and in particular (probably) the internal switch that has the sole task of letting the signal? (which is already at 321.4MHz and does not need to be converted)?pass from its input to the output


In the next few days I will test the converter that meanwhile?has been?disassembled?; In the meantime I found a cheap one on the bay that should arrive in about ten days


Yves, I have a question: on the block diagram A3A4 is represented as a block that has 5 ports of which one (J5) would seem to be the connector that carries the power and the DC that controls the switch and that connects to A7 Analog Interface through the W35 cable

?

Actually,?this connector on the real component, does not have a name
Instead,?the name J5?, stamped on the case , indicates an SMB connector that has the writing LO TEST and in my analyzer?it is the one that?conveys the 600MHz LO signal?

Now,?on the block diagram the connector that conveys the 600MHz signal has the name J4 (in my analyzer, the J4 connector was disconnected)

?

This confusion of names and roles made me doubt that years ago, when I had disassembled this section I had not reassembled it correctly

thanks again and best regards

Adri

?

?

?

----- Messaggio originale -----

Da: Yves Tardif via groups.io <yves_tardif@...>

Rispondi a: <[email protected]>

Inviato: 06/09/2024 23:21:52

Oggetto: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

Hi Adri,

?

I had sent you the measurements of the RF input-output mixer signals verification, I had disassembled the High Frequency section of my 8595E to be able to provide you with this information.

If you have no more questions relating to this section, I will close my 8595E and do a flatness check to see if everything is correct.

?

Yves

?

De?: [email protected] <[email protected]> De la part de alfa beta
·¡²Ô±¹´Ç²â¨¦?: 31 ao?t 2024 12:23
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] HP 5086-7906 YTO

?

Yves,

thank you very much for all the suggestions and information with which I will continue my investigation
In the meantime I received the 2.5mm socket wrench and after?a little mod to adapt it?for the purpose (photo), I proceeded to align the spheres of the SYTF


I must say that the operation done under the microscope is quite simple

The nuts must be loosened (not too much) and with a small screwdriver that acts as a delicate lever, ?the supports of?the?spheres can be moved so that the coupling ring completely shadows them (i.e. the sphere is exactly in the center)
Removing the gold mesh was not necessary
The insertion loss has improved enormously:
at 5 GHz it is -6dBm at 6GHz it is -10dB (before the signal starting from this frequency was no longer visible) at 6.5 GHz it is only -3dB
I will install it when I have solved the problem of "blindness" in band 0 since the calibration constants that the instrument has in memory (in practice the tuning current data) are relative to the original SYTF and the "new" SYTW requires a? SYTF CAL is done

Adri

?

?
Re: HPBasic for windows

 

Hello, i would like to use HP Basic to program my HP8568B Spectrum analyzer. I have got the 7.1 version, but it ask for a serial number i don't have, i need also a manual and some hints to make it work with NI GPIB usb, Can some one give me some HINTS?
?
Re: Introduction

 

¿ªÔÆÌåÓý

Hi Jim,

?

Here is my lab when it is not too messy.

I have another section containing about ten instruments near my work desk. Small space, but enough to have fun.

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?

?


?

?

?

De?: [email protected] <[email protected]> De la part de Jim via groups.io
·¡²Ô±¹´Ç²â¨¦?: 17 septembre 2024 23:26
??: [email protected]
Objet?: Re: [HP-Agilent-Keysight-equipment] Introduction

?

I'd love to see other benches! On another forum I've seen some "benches" that were to die for personal warehouses of wonderfully organized storage and spacious workbenches.

Some of the minimalist benches were exceedingly clever uses of small spaces and very inspirational too.

?

Jim

image003.png

Re: HP-IB connector screws

 

Funny how these HPIB nuts are sometimes the only rusty thing on an otherwise pristine piece of HP gear?
Re: Introduction

 

Great to see others' labs!
?
Here are my two labs -- the first (my main lab) is in my garage here in Silicon Valley.? Besides what you see, there's a whole bunch of "gee, maybe I could use that in a project," or "that'd be fun to get working," stuff filling every available surface, picked up at various swap-meets and the local surplus stores (now sadly vanished) over the years.? I'm about to hit 70 and have realized that I'll never use a lot of it in the time remaining -- tempus fidgits, after all.? And so I've been carting it off to the local swap-meet to sell.
?
?
The second image is my more recently assembled home-away-from-home lab, again, in a corner of that house's garage.? ?(On the bench is an HP 3430A Nixie-tube DVM that I'm working on).??
?
?
- Jeff, k6jca
Re: KO4BB manuals site error

 

Several days ago I saw a post "somewhere" saying that the site had run out of disk space for manuals and that he would be working on it. I know disk space and a web link are not necessarily directly related but maybe that's why the Manuals page is not working.

Regards

Lou
VK3ALB


On Wed, Sep 18, 2024 at 10:51?PM maurit via <maurinot=[email protected]> wrote:
Now same here in Italy.
The whole site works except the "Manuals"
Re: HP 141T Power Supply Help Needed

 

Thanks for that feedback Dave.?

At this point in my struggle with this machine, nothing about it surprises me.? ?It could have been hit by lightning for all i know.? ? :-P?

One bit of good news, the modules do appear to be working.? I was able to view the scan and vertical outputs on my scope and it does look as i'd expect.??
Nice little mid week surprise for me there.??


On Wed, Sep 18, 2024 at 1:53?PM Dave Wise via <d44617665=[email protected]> wrote:
I can't see what could destroy Q15, except perhaps C18 shorting.

Dave Wise
From: [email protected] <[email protected]> on behalf of Bill Berzinskas <bberzinskas@...>
Sent: Wednesday, September 18, 2024 8:15 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed
?
I don't have a HV probe currently, but its on my shopping list.? ? I'm going to go with 0v at the moment though, given the state of Q15.??
I guess I'm just wondering?if I should expect other damage to have occurred when this part failed.? ??

I will replace Q15 this week, get a probe and report back though!?

On Wed, Sep 18, 2024 at 10:59?AM Michael Bafaro via <m.bafaro=[email protected]> wrote:

Bill,

?

Q15 is the FET that is in the HV regulator circuit.? The gate to the other leads will read open if the ohm meter is connected to back bias the junction.? The question is what voltage is present at the control grid of the CRT?? If you have a high voltage probe you can measure it directly at the green lead on the PCB that goes to the CRT socket.? I measured -2580.? What voltage do you see??

?

Mike

?

From: [email protected] <[email protected]> On Behalf Of Bill Berzinskas
Sent: Wednesday, September 18, 2024 9:41 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

Checking things out last night in the LV side of the HV supply, I saw on the edge of Q15 a small delamination. Very tough to see in that tight space but just enough to warrant further?investigation.? ?I pulled Q15 and a sizable chunk was blown out and barely hanging on, so it's physically OPEN between pins 1 and 2.

I've ordered a replacement.? Anything else to be concerned with in this area in such a situation?? Q13 and 14 don't seem to be damaged as far as I can tell, at this time.? ??

?

On Tue, Sep 17, 2024 at 9:27?AM Bill Berzinskas via <bberzinskas=[email protected]> wrote:

Probably not related strictly to the PSU, so happy to make a new thread if needed.? ?

I've gone over the A5 board at a high level.? ?Checked all the test points and all but #7 appear to be as expected on the scope.
One of the schematics has voltages at the wiring pins, and those also look ok.? ?I have not checked per-node voltage within the circuit yet.? ??
Is this "fairly conclusive evidence" that A5 is generally OK?? ?I don't want to dwell on it, I'd thought that maybe Blanking or Pulse were having issues?
but now i'm thinking not.? ??

More power supply related, I don't see any oscillation on the HV oscillator.? ?The labelled 7v is closer to 12v so I'm thinking the problem is around Q13, 14 or 15.? Q15 looks kind?of not good, seeing .1v breakdown with a DMM diode test in-circuit.? ?I know thats?not the best test, but it does seem to work for most of the other transistors I've tested.??

?

On Sat, Sep 14, 2024 at 2:05?PM Dave Wise via <d44617665=[email protected]> wrote:

The worst bugs make the instrument diverge from the schematic, often in ways that would look like nonsense if you drew it there.

From: [email protected] <[email protected]> on behalf of Frank Mashockie <fmashockie@...>
Sent: Saturday, September 14, 2024 9:57 AM
To: [email protected] <[email protected]>
Subject: Re: [HP-Agilent-Keysight-equipment] HP 141T Power Supply Help Needed

?

"From over 40 years of fault finding and repair experience in a wide range of electronic products, not just instrumentation, the weirdest symptoms often have a really simple root cause!"

?

This has been my experience as well! Makes it very easy to go down a rabbit hole. Which is why I always do a thorough visual inspection first. Also checking mechanical components of switches, pots, etc. Giving them a good clean right off the bat and testing those first can save you a lot of headache.

?

-Frank
Transferring waveforms from 54542a through GPIB

 

Hi,
?
I would like to transfer waveforms from my HP 54542A to a PC. In the past I have made do with floppy disks, but I find them to be unreliable and a bit of a faff. As a result I would like to use GPIB.
?
I have developed a working connection between my PC and the 54542A. It responds to *IDN? etc commands fine. However, the only means I have found of transferring data is a bit cumbersome and doesn't suit my workflow. I was wondering if someone knows if there is a better way to acquire data. I have read the manual to the best of my ability, but the programming guide is huge and a bit overwhelming for me on my first foray into this sort of work.
?
So far, I have been able to get a string of ASCII values by sending:
:WAVEFORM:SOURCE CHANNEL1 //We can only download one waveform at a time - I think?
:WAVEFORM:FORMAT ASCII? ? ?//To convert the output to ascii
:DIGITIZE CHAN1? ? ? ? ? ? ? ? ? ? ? //To actually put waveform data into some register to transfer
:WAVEFORM:DATA?? ? ? ? ? ? ? ? ? //Spits out waveform data - need scaling etc - looks like: 5208,5240,5272,5304,5336...

However, my workflow normally revolves around carefully retriggering the scope to capture certain events that are not captured during every trigger. I often find that after capturing a waveform, if I retrigger the scope, the signal of interest is no longer present. Therefore digitizing a channel (which seems to retrigger the scope) is very frustrating.?
?
In addition, it seems quite cumbersome to only be able to download a single channel, which then needs scaling to actual voltage values.
?
Is there any way to more conveniently transfer a set of waveforms that I have already captured - without the need to retrigger? Is there a way to output voltages directly - ideally similar to XY mode when saving to disk? Or have I been interpreting my outputs incorrectly?
Re: 8566B Attenuator Service

 

On Wed, Sep 18, 2024 at 09:57 AM, Jinxie wrote:
Dimethyl mercury
yes... lot's of stuff kills you.
but... the biggest killer of all is time.
yet, we all use it.
Re: Introduction

 

On Wed, Sep 18, 2024 at 01:23 PM, Roy J. Tellason, Sr. wrote:
It's been a long time since I've seen it, but I *think* that there's a bench underneath all of that "stuff" in the other room...
I think that once enough equipment accumulates that it hides other gear it breeds and, thus, new test equipment.? Sounds likely to me, anyway, but I'm having a tough time selling that explanation to the SO.
Re: 8566B Attenuator Service

 

On Wed, Sep 18, 2024 at 10:01 AM, Jinxie wrote:
sure your hardness scale figures are correct
I'm just saying sandpaper scratches, and so 'cuts' glass.
smaller particles, are not harder, than larger ones... they just leave smaller scratches... so cut slower.
Re: 8566B Attenuator Service

 

On Tue, Sep 17, 2024 at 02:53 PM, Jinxie wrote:
can't think of any scenario where I would even dream of using that stuff
About half million tons of the stuff, used around the U.S. annually, for something.

They used HF to etch quartz crystals during WWII
AFAIK is was something like 5% solution of HF.
Women did it, using open tanks... AFAIR
In that zinc plated, vacuum tube, culture... and given the angst of the war.. I doubt safety was a top priority.
Yet, I don't know how much of a? problem it created, and whether, or not, there were slashes causing injury.
?
Fisher ships 50%
Most university labs have it.
Sometimes accidents happen
But it's mostly in industrial settings, I think... where fatalities occur.
Re: Introduction

 

On Tuesday 17 September 2024 11:26:03 pm Jim via groups.io wrote:
I'd love to see other benches! On another forum I've seen some "benches" that were to die for personal warehouses of wonderfully organized storage and spacious workbenches.
Some of the minimalist benches were exceedingly clever uses of small spaces and very inspirational too.
It's been a long time since I've seen it, but I *think* that there's a bench underneath all of that "stuff" in the other room...

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
Re: 8566B Attenuator Service

 

On Tue, Sep 17, 2024 at 04:25 PM, Mark Bielman wrote:
It would not attack your flesh (went right through) but dissolved your bone.
It does penetrate the skin, which is a barrier for entry into the body, beyond that organ.
Not sure how it 'dissolves' bone... if you mean it brings bone into solution, with body water... as HF forms calcium, and magnesium fluoride percipitates... in the body.
Re: 8566B Attenuator Service

 

On Wed, Sep 18, 2024 at 04:51 AM, Robert G8RPI wrote:
official treatment is calcium gluconate gel
?
calcium gluconate gel is widely available, and used for lots of other things
Should always be on hand if handling HF, especially 1%,5% or 10% solutions.
Hospital emergency, and cluing in the doctors, is a must.
?
for significant splashes of 50% HF, used in etching fabs, I don't know how much the gel? helps?
they do start giving it intravenously ASAP
?
Sadly some woman in a Taiwan fab? died, several hours later, after having splashed 50% HF on her legs.
Significant exposure seems to mostly lead to death.
?
4361 - 4380 of 151101