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Re: switch controllers 3499A vs 3488A?

 

-- In hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com><mailto:hp_
agilent_equipment%40yahoogroups.com>, "W2HX" wrote:
>
> Hi all, is there a significant benefit of the 3499A controller vs the
3488A controller? The 3488's are dirt cheap (empty).
>
>
> 73 Eugene W2HX

Dunnu about the 3499A, but if you get the parallel I/O card for the 3488A
you can auto step through a series of inputs to another card by tying
one line of the parallel card input to the "read out stable " or "print
pulse" from
the back of a system DVM without the need of HPIB

John B
AN-150-B

 

Does any one have a copy of HP application Note 150-B? I am looking for the B version, not the more common 150.

If any one has one I would like a copy of it, to go with my 853/8559B set up.

Thanks,

Chuck McClurg
N7UVZ
70300A CLIP MANUAL DETERIORATION UPDATE

Artekmedia
 

First let me say that a number of different methods as suggested by the group were tried in freeing the toner ink page face bonding problem. None resulted in foolproof and repeatable results. An email exchange with a couple of document restoration entities produced no better results.

In general the process that seems to produce some benefit is as follows
1) Freezing the pages and then flexing them sharply by pulling them back and forth over the edge of a table while still cold serves to break some but not all of the bonds. Rolfing them so to speak
2)Then carefully using a very thin but not sharp blade with a rounded tip such as a very old butter knife or painters mixing knife. Slowly teasing the stuck surfaces apart as vertically as possible (think tensile bonds versus shear bonds) from each other.

In the end the pages once separated were still not useable anymore, to many missing letters , broken lines etc. Scanning the resulting degraded document and then using a photo editor such a Paint or Photoshop to painstakingly redo lines and symbols, with a lot of deductive research and reference back to the board layout and parts list the document was ultimately electronically recreated. In the case of one schematic A8A1 our separation attempts resulted in an unrestorable document . Another list member (Dan in Chandler, AZ) also had a copy of the same CLIP. The bad news is Dan's attempts to open his own A8A1 page was worse than mine, resulting in as feared an unusable schematic, the good news is that several of the destroyed areas on my schematic were readable on Dan's and vice versa , those areas commonly damaged on both schematics were largely restored using PC Paint, and deductive logic, in all it took nearly 8 hours of graphic editing mouse time just to restore that one page which I feel is 99.5% accurate now ( I also found a couple of HP errrors in the process :-) )

After prying apart many pages ( the 70300A CLIP is fully restored) I tend to believe that the problem is not one of time making it worse but rather that the original process in that the pages had too much toner , improperly fused and quite possibly sent to the folding machine while they were still warm , bonding is clearly worse near the folded edge than farther out. I will now take my restored D size drawings to my local repo house and have them reprinted and stored with the original binder. If any one would like to purchase the original and restored CLIP contact me off list, digital copies will be soon be available as well

Dave
ArtekManuals.com


--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
Re: Lamps and Mains Lead for HP412A?

 

Thanks Bob.

A very good range...

73,
Mike

----- Original Message -----
From: n2cbh2000
To: hp_agilent_equipment@...
Sent: Saturday, March 09, 2013 12:42 PM
Subject: [hp_agilent_equipment] Re: Lamps and Mains Lead for HP412A?



I have an HP411 which is an RF power meter with the same clock work motor and photo interrupter setup as I suspect the 412 has. I got replacement bulbs from a place on the Internet called Bulbtown. You might Google the name but they had all kinds of type 47 bulbs and the type that are used in the HP stuff. They even had the blue tinted bulbs used in my old Drake 4 line ham transciever.

Bob
N2CBH

> > I've just acquired an HP412A & would like to find some replacement lamps for the choppers.
> >
> > They are a G4 base, 6.3v, 0.15A lamp.
> > Digikey, Mouser, Farnell nor RS seem to have them.
Re: HP 8640B Troubleshooting help needed

 

Hi Bob,
I'm glad you solved the problem. I'm about to fix my second HP-8640B
that I had originally acquired as a parts unit and then I decided it
was almost worth fixing it. These are great generators.
Best 73
Frank IZ8DWF

On Sat, Mar 9, 2013 at 2:59 AM, kn4hhptc <kn4hhptc@...> wrote:



Frank, thank you for the suggestion. The -20volt regulator had failed. After replacement, the unit works very well.
Thanks again.
73, Bob, KN4HH

Sent from Samsung tabletfrancesco messineo <francesco.messineo@...> wrote:As in almost all electronic troubleshooting, I'd start with checking
all power supplies.

good luck
Frank IZ8DWF

On Wed, Feb 27, 2013 at 2:56 PM, kn4hhptc <kn4hhptc@...> wrote:



Good day, all. I have a HP8640B signal generator that I use to service and maintain vintage amateur radio equipment. It has worked perfectly until today. After applying line voltage, the output meter pegs to the right and the frequency counter reads all zero's. No front panel controls have any effect on this condition. I would appreciate some advice on where to start looking for the problem. I have the service manual.

Thanks for any assistance,

Bob, KN4HH

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

Yahoo! Groups Links

[Non-text portions of this message have been removed]
Re: Power on Time

 

Maybe some do, but I know the current PNA series of Network Analyzers do not....unless you count the hard drives. HDDs do keep track of the number of hours they are turned on; as well as number of power cycles. So I guess, you could say that most modern instruments do keep track. Of course, if you replace the HDD, that data is lost.
I assume SSDs also keep track of the same info.

--- In hp_agilent_equipment@..., "Susan" <susan@...> wrote:

Dear All,

Do the (more modern?) units keep a track of their power on time?

For example I am thinking of my 34410A...

???

Thanks.

Best wishes,
Susan.
Re: Power on Time

laurens_db
 

I don't know about the OP's question, but the 856xE series definately had an elapsed hours count, possibly as the CRT has a finite life...

--- In hp_agilent_equipment@..., "J. Forster" <jfor@...> wrote:

Hi Susan,

HP only put timers in instruments that had things that were 'used up',
like Cs beam standards, sweepers with BWO tubes, and so on. They used
little Curtis (?) ETMs, composed of a capilliary filled w/ mercury and a
drop of electrolyte. The position of the Hg gap was proportional to the
A-H through the device.

In newer stuff, there may be an ETM built into the software, but I don't
know.

FWIW,

-John

============



Dear All,

Do the (more modern?) units keep a track of their power on time?

For example I am thinking of my 34410A...

???

Thanks.

Best wishes,
Susan.
Re: Power on Time

J. Forster
 

Hi Susan,

HP only put timers in instruments that had things that were 'used up',
like Cs beam standards, sweepers with BWO tubes, and so on. They used
little Curtis (?) ETMs, composed of a capilliary filled w/ mercury and a
drop of electrolyte. The position of the Hg gap was proportional to the
A-H through the device.

In newer stuff, there may be an ETM built into the software, but I don't
know.

FWIW,

-John

============

Dear All,

Do the (more modern?) units keep a track of their power on time?

For example I am thinking of my 34410A...

???

Thanks.

Best wishes,
Susan.
Re: HP 8620C with 86222B-H69 rf plug in ( with a US serial number )

J. Forster
 

The number 6625-01-036 3730 is the NSN, National Stock Number, not serial.

You should look for:

The 86222B manual and the H29 Option

-John

===============

I have a old HP8620b with rf 86222B-H29 plug in probably made specially
for the defence at that time . The output that is not leveled i would
like to find the service manual or a place where i could find it , unless
somebody has experience with the unit.( It appear also that when you want
to plug another rf plug in it is not compatible even with a adapter
probably because it was made specially ??) the US serial is 6625-01-036
3730 )

thank you
Re: CRT Needed for HP 54520A Scope

 

Dan,
Once you get the cathode emitting again, you can "wash"
away some of the burnt marks by equalising(actually wasting) away
surrounding areas.
This will help to lighten the burnt- areas but not removing them.
Why don't you try rejuvenating first.

Good luck.
cslim

On Sat, Mar 9, 2013 at 9:48 PM, danaz.chandler <djn@...> wrote:



Thanks for the idea. I may try to rejuv the. However, my main complaint is
the deep burn the glass shows..

Dan in Chandler,AZ
=============================


--- In hp_agilent_equipment@..., Chin Siang Lim <cslim388@...>
wrote:

Hi Dan,
If you are prepared to throw those CRTs away, why not try rejuvenating
them?
See www.ke5fx.com/crt.html
www.thegleam.com/ke5fx/crt/sencore.pdf

And use some ideas from here :



cslim
On Sat, Mar 9, 2013 at 6:12 AM, danaz.chandler <djn@...> wrote:



Hi gang...I need to replace the CRT in two or three HP 54520A scopes.
While the one's installed work, they are very well burnt and getting
dim.

The tube is an HP 2090-0324 Hitachi Mizusawa J260194 9" P31 Green
phosphor
tube.

If any one has a boneyard scope with a good CRT, I could use a few.
Also,
can use the trim strip that holds the case to the front bezel.

Question: Would most 9" CRT's work with the existing video board?

Any help or thoughts appreciated.

Dan in Chandler AZ

=====================================================



[Non-text portions of this message have been removed]


[Non-text portions of this message have been removed]
Re: CRT Needed for HP 54520A Scope

Mark Gulbrandsen
 

I meant to say 54520! Apparently that range of HP scopes all use the same CRT. I have a 54520 here that I use occasionally....

Mark
On Mar 9, 2013, at 7:20 AM, Mark Gulbrandsen <cinerama84106@...> wrote:

There is a CRT distributor on ebay called "newtubes" that has New 54502 crt's They show one listed that fits your scope and is $195.00.. Also looks to be a normally stocked tube for them. I hope this helps...

Mark Gulbrandsen
Salt Lake City

Sent from my iPad

On Mar 9, 2013, at 6:48 AM, "danaz.chandler" <djn@...> wrote:

Thanks for the idea. I may try to rejuv the. However, my main complaint is the deep burn the glass shows..

Dan in Chandler,AZ
=============================

--- In hp_agilent_equipment@..., Chin Siang Lim <cslim388@...> wrote:

Hi Dan,
If you are prepared to throw those CRTs away, why not try rejuvenating them?
See www.ke5fx.com/crt.html
www.thegleam.com/ke5fx/crt/sencore.pdf

And use some ideas from here :



cslim
On Sat, Mar 9, 2013 at 6:12 AM, danaz.chandler <djn@...> wrote:



Hi gang...I need to replace the CRT in two or three HP 54520A scopes.
While the one's installed work, they are very well burnt and getting dim.

The tube is an HP 2090-0324 Hitachi Mizusawa J260194 9" P31 Green phosphor
tube.

If any one has a boneyard scope with a good CRT, I could use a few. Also,
can use the trim strip that holds the case to the front bezel.

Question: Would most 9" CRT's work with the existing video board?

Any help or thoughts appreciated.

Dan in Chandler AZ

=====================================================







[Non-text portions of this message have been removed]
Re: CRT Needed for HP 54520A Scope

Mark Gulbrandsen
 

There is a CRT distributor on ebay called "newtubes" that has New 54502 crt's They show one listed that fits your scope and is $195.00.. Also looks to be a normally stocked tube for them. I hope this helps...

Mark Gulbrandsen
Salt Lake City
On Mar 9, 2013, at 6:48 AM, "danaz.chandler" <djn@...> wrote:

Thanks for the idea. I may try to rejuv the. However, my main complaint is the deep burn the glass shows..

Dan in Chandler,AZ
=============================

--- In hp_agilent_equipment@..., Chin Siang Lim <cslim388@...> wrote:

Hi Dan,
If you are prepared to throw those CRTs away, why not try rejuvenating them?
See www.ke5fx.com/crt.html
www.thegleam.com/ke5fx/crt/sencore.pdf

And use some ideas from here :



cslim
On Sat, Mar 9, 2013 at 6:12 AM, danaz.chandler <djn@...> wrote:



Hi gang...I need to replace the CRT in two or three HP 54520A scopes.
While the one's installed work, they are very well burnt and getting dim.

The tube is an HP 2090-0324 Hitachi Mizusawa J260194 9" P31 Green phosphor
tube.

If any one has a boneyard scope with a good CRT, I could use a few. Also,
can use the trim strip that holds the case to the front bezel.

Question: Would most 9" CRT's work with the existing video board?

Any help or thoughts appreciated.

Dan in Chandler AZ

=====================================================



[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]
Re: CRT Needed for HP 54520A Scope

 

Thanks for the idea. I may try to rejuv the. However, my main complaint is the deep burn the glass shows..

Dan in Chandler,AZ
=============================

--- In hp_agilent_equipment@..., Chin Siang Lim <cslim388@...> wrote:

Hi Dan,
If you are prepared to throw those CRTs away, why not try rejuvenating them?
See www.ke5fx.com/crt.html
www.thegleam.com/ke5fx/crt/sencore.pdf

And use some ideas from here :



cslim
On Sat, Mar 9, 2013 at 6:12 AM, danaz.chandler <djn@...> wrote:



Hi gang...I need to replace the CRT in two or three HP 54520A scopes.
While the one's installed work, they are very well burnt and getting dim.

The tube is an HP 2090-0324 Hitachi Mizusawa J260194 9" P31 Green phosphor
tube.

If any one has a boneyard scope with a good CRT, I could use a few. Also,
can use the trim strip that holds the case to the front bezel.

Question: Would most 9" CRT's work with the existing video board?

Any help or thoughts appreciated.

Dan in Chandler AZ

=====================================================
HP 8620C with 86222B-H69 rf plug in ( with a US serial number )

 

I have a old HP8620b with rf 86222B-H29 plug in probably made specially for the defence at that time . The output that is not leveled i would like to find the service manual or a place where i could find it , unless somebody has experience with the unit.( It appear also that when you want to plug another rf plug in it is not compatible even with a adapter probably because it was made specially ??) the US serial is 6625-01-036 3730 )

thank you
Re: Lamps and Mains Lead for HP412A?

 

I have an HP411 which is an RF power meter with the same clock work motor and photo interrupter setup as I suspect the 412 has. I got replacement bulbs from a place on the Internet called Bulbtown. You might Google the name but they had all kinds of type 47 bulbs and the type that are used in the HP stuff. They even had the blue tinted bulbs used in my old Drake 4 line ham transciever.

Bob
N2CBH

--- In hp_agilent_equipment@..., "Mike Millen" <mike.millen.uk@...> wrote:

Thanks for the tip, Cliff.

They're not exactly like the HP ones, but they may well suffice... certainly worth a try at 36p each!

73,
Mike
M0MLM


----- Original Message -----
From: Cliff Barber
To: hp_agilent_equipment@...
Sent: Friday, March 08, 2013 2:35 PM
Subject: Re: [hp_agilent_equipment] Re: Lamps and Mains Lead for HP412A?



Hi,
I wonder if Ebay item 360327851354 might be suitable.
I had a similar requirement a few weeks ago, but managed to find something from my "junk-box"
Cliff
G4BGP

----- Original Message -----
From: mike
To: hp_agilent_equipment@...
Sent: Friday, March 08, 2013 1:41 PM
Subject: [hp_agilent_equipment] Re: Lamps and Mains Lead for HP412A?

Hi Dave,

Neither, I'm afraid, but the halogen is closest, physically.

It's a 6.3v, 0.15A lamp with 4mm pin pitch.

Mike

--- In hp_agilent_equipment@..., "David C. Partridge" <david.partridge@> wrote:
>
> G4 (bi-pin halogen) or G4-1/2 (miniature Edison Screw, also known as E10)? If the latter both digikey and mouser stock some
>
> Dave
> -----Original Message-----
> From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] On Behalf Of mike
> Sent: 08 March 2013 08:15
> To: hp_agilent_equipment@...
> Subject: [hp_agilent_equipment] Lamps and Mains Lead for HP412A?
>
> I've just acquired an HP412A & would like to find some replacement lamps for the choppers.
>
> They are a G4 base, 6.3v, 0.15A lamp.
> Digikey, Mouser, Farnell nor RS seem to have them.
>
> Does anyone know of a source, please? (UK preferred, but beggars can't be choosers.)





[Non-text portions of this message have been removed]
Power on Time

 

Dear All,

Do the (more modern?) units keep a track of their power on time?

For example I am thinking of my 34410A...

???

Thanks.

Best wishes,
Susan.
Re: CRT Needed for HP 54520A Scope

 

Hi Dan,
If you are prepared to throw those CRTs away, why not try rejuvenating them?
See www.ke5fx.com/crt.html
www.thegleam.com/ke5fx/crt/sencore.pdf

And use some ideas from here :



cslim

On Sat, Mar 9, 2013 at 6:12 AM, danaz.chandler <djn@...> wrote:



Hi gang...I need to replace the CRT in two or three HP 54520A scopes.
While the one's installed work, they are very well burnt and getting dim.

The tube is an HP 2090-0324 Hitachi Mizusawa J260194 9" P31 Green phosphor
tube.

If any one has a boneyard scope with a good CRT, I could use a few. Also,
can use the trim strip that holds the case to the front bezel.

Question: Would most 9" CRT's work with the existing video board?

Any help or thoughts appreciated.

Dan in Chandler AZ

=====================================================
Re: HP 1740A Parts wanted

 

I have two DOA 1740's to turn into one working unit, send me a note during the week if you strike out. Might have what you need.

Regards,
Chris

Sent from my outdated iPhone wireless thingy

On Mar 8, 2013, at 6:29 PM, "raymonduk2000" <raymonduk2000@...> wrote:

hello,

been looking in the net for spares for HP1740A oscilloscope

(see picture for details)
I wonder if you can help me find a knob ( cal ) ch1 [ 1 in picture] , and the (time) [ 2 in picture] in addition to front cover (this is to look after the CRT screen)
sorry I do not know the exact part numbers.

thank you




[Non-text portions of this message have been removed]
Re: LIF File Conversion.

 

Jay:

I have had success! This is what I learned:

* Use Agilent LIFUTIL to pull the file off the HP LIF diskette
^ Drive has to be built in so the floppy controller chip is able to be directly instructed by the software.
^ Has to be a FAT or FAT32 machine or the software barfs.
^ Often the file on the HP LIF diskette is a tokenized basic. This means that one or more hex values have been saved instead of the ascii text. So "GOTO" will be a HEX value.
# So far, the only way to convert an HP tokenized basic file to an ASCII file is to load it into a vintage HP series 300 computer and then re-save in the ascii format. The LIFUTIL has to be run to save the header information.

A lot of steps, but it is possible with help from our HP cloud to get important software off of LIF disks....

Dan in Chandler, AZ
================================================

--- In hp_agilent_equipment@..., "jayw_comark" <jayw_comark@...> wrote:

A bit late to this discussion, but have you given this a try?


Jay

--- In hp_agilent_equipment@..., "danaz.chandler" <djn@> wrote:


I need to convert software on a LIF 3.5" Floppy and save on a Windows 7 machine. All the utilities I have seen won't.
So, I thought....Load the diskette into my HP 4195A, bring up Vee Pro 9.2, install a panel driver and access the floppy that way.

However, I am such a novice with Vee, that I don't know how to transfer the file to my hard disk...Any pointers?

Dan in Chandler, AZ
oscilloscope probe tips

 

Greetings,

I have several agilent 10:1 passive probes (N2862A) and need some retractable spring hook tips (PN#: 0960-2900).

I searched the internet and distributors listed as Agilent dealers. Many had the REV. B version of the probe, but none that I found listed or stocked the tip.

The Agilent website (on-line store) lists them in stock at $4.66 each. However, I have learned that the on-line store is user belligerent and apparently designed to get potential customers to go away.

Can anyone point me in the direction of a source that has these probe tips in stock (in the USA) and actually wants to sell them?

Thanks for your time and consideration.

Regards,

Ken
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