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Hi There,
I need an HP8640B opt323 manual to fix my generator.
I was told the manual is called an HP8640M for military.
I've tried LOGSA and watched ebay for over a year, but nothing.
The HP8640A and B manuals are some help,
but there are some differences in the counter,
and thats where my problem is.
If you know where I can fnd one,
please let me know.
All costs reimbursed.
Regards
Ray vk2ilv
|
Re: hp 5100A /5110A synth set Spectrum Generator
Hi Morris:
I've looked further into the radio module and I think the only parts needed are a transistor and some support circuitry.
The transistor is biased off and the negative input swing causes it to generate a pulse. I have a module on the way to make some measurements.
Do you have any info on what the 1 MHz signal looks like in terms of magnitude and source impedance?
What output harmonics does the spectrum generator need to supply? I think it's only those from 3 to 4 MHz, or are there more?
73,
Brooke Clarke, N6GCE
toggle quoted message
Show quoted text
Date: Tue, 01 Jun 2004 08:32:09 +1000
From: Morris Odell <morriso@...>
Subject: RE: hp 5100A /5110A synth set Spectrum Generator
Hi all,
When repairing my 5110A with the dud SRD last week I tried several
varactors and eventually found one from a junked cellular base station
tansmitter which worked very well. It is a stud mounted power device
used a tripler in the final of a ? FM transmitter aroung 800 or so MHz
judging by the appearance of the rest of the circuit. It's about the
size of an older style 10 watt power zener, but gold plated with a
ceramic insulated header. It is made by NEC and labelled "SV 888". After
the HP 5110A SRD oven assembly together with its control transistor Q2
was removed from the board, there was plenty of room to mount the diode
on a pair of stiff wire "legs". It's probably the only non-US made part
in the whole system now, which is a sobering thought when you think of
where comonents come from these days.
There is lots of this sort of equipment around at hamfests etc. It had
been sitting in my junk box for years - it just goes to show you should
never throw anything out!
The 5100A/5110A synthesizer is now working perfectly. The only other
parts that had to be replaced were a fuse and the "power on" neon
indicator in the 5100A, both glass components :-) It's a very impressive
performer!
I note the comments about other harmonic generators. There are lots of
ways to do the job, and I had briefly thought about the subject before
finding my diode. Going for a technology shift would have required a lot
of reworking of the 5110A and would have been a major effort. HP seemed
to like SRDs, they are in quite a lot of other equipment including range
extender plugins for various counters and also the 8708A synchronizer.
This is the first one I have seen fail.
Morris
|
Hello
Looking for the schematics for the HP 8656B signal generator.
Hope some can help!
Best Regards
Hardy
|
Greetings everyone. Morris has kindly donated to me an
HP5100B synthesizer. Unfortunately the matching
HP5110B Driver was not part of the package (the
original 5110B having now gone to that great scrapyard
in the sky), and I'm desperately seeking a
replacement. Nothing of course on e-Bay. So if anyone
has a 5110B driver surplus to their requirements that
I can beg, borrow or steal (or buy for that matter)I
would be most grateful to hear from you. It need not
be working or even complete, as long as there is a
reasonable chance it could be repaired. Can somebody
help?
Thanks
Rob Fincher
VK3BRF
Find local movie times and trailers on Yahoo! Movies.
|
Re: hp 5100A /5110A synth set Spectrum Generator
|
Re: hp 5100A /5110A synth set Spectrum Generator
Might also be worth trying a tunnel diode. They are excellent at turning
slow edges into fast ones, which is what you want if you're trying to
generate harmonics.
Stan Griffiths (w7ni@...) usually has some Tek-surplus diodes for
sale.
-- john KE5FX
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Show quoted text
Hi:
As an alternative to using a Step Recovery Diode to generate the
harmonics it may be possible to use a modified A45 Module from a PRC-77
military radio. The A45 Module is called "One-megacycle spectrum
generator" and uses a PNP 2N2273 transistor to generate the harmonics
with a fairly simple circuit powered by +10 Volts. In the theory of
operation TM 11-5820-667-35 pg 2-22.3 "The sinusoidal 1-mc oscillations
are applied to spectrum generator Q2 (2N2273) through coupling capacitor
C3 (10 uuF) . The spectrum generator is normally cut off by the reverse
base bias applied through R4 (19k), and conducts only on the negative
half cycles of the 1-mc signal. A positive pulse, rich in harmonics, is
developed across transformer T2 and coupled to first mixer module A44.
This might be an excellent replacement for the impossible to get SRD.
73,
Brooke Clarke, N6GCE
|
hp 5100A /5110A synth set Spectrum Generator
Hi:
As an alternative to using a Step Recovery Diode to generate the harmonics it may be possible to use a modified A45 Module from a PRC-77 military radio. The A45 Module is called "One-megacycle spectrum generator" and uses a PNP 2N2273 transistor to generate the harmonics with a fairly simple circuit powered by +10 Volts. In the theory of operation TM 11-5820-667-35 pg 2-22.3 "The sinusoidal 1-mc oscillations are applied to spectrum generator Q2 (2N2273) through coupling capacitor C3 (10 uuF) . The spectrum generator is normally cut off by the reverse base bias applied through R4 (19k), and conducts only on the negative half cycles of the 1-mc signal. A positive pulse, rich in harmonics, is developed across transformer T2 and coupled to first mixer module A44.
This might be an excellent replacement for the impossible to get SRD.
73,
Brooke Clarke, N6GCE
|
Any of you have an user manual of this machine? o just know the pinout
of 50 pins conection, pin to pin, crosed...
|
Hi Morris, i have copied the manual for the 5100A, except the parts list, which was missing in my copy, too. I send it tomorrow. With that, i send you two BA243S Switching Diodes which snaps well. But compared to a "true" HP-SRD (My spare for the Clock-Circuit in my 5360A) it has about half the spike-voltage, but still a lot more than some other switching and tuning diodes. If you have any junk tv-tuner, best from the mid 70's (pre PLL-Age), pull out all diodes and test them, maybe you find a good working one before my arrives. Maybe you have to fiddle with the bias voltage (resistor), too. Most other diodes doesn't snap either. Maybe the pulse is too low for the following stages? Or the driving power is too low? The snappys want power! And they can widhstand a lot! Don't be shy! ;-) I will measure the pulse voltage and some other interesting voltages in that stage in our 5110A, but not before Wednesday of the next week, due to our pentecost-weekend fieldday which starts tomorrow, and i have a lot to organize this day and tomorrow and still after the FD. ...Dry the tents, repair the generator, ... and so on :-( ;-) Jorgen dj0ud --- In hp_agilent_equipment@..., "morriso2002" <morriso@v...> wrote: Hi all,
I have been working on a 5110A synth driver with a problem of no
output. After getting a manual I diagnosed a failure of the Step
Recovery Diode in the harmonic generator and sure 'nough, it's open
circuited. (Why is it always these rare parts that fail - SRDs,
tunnel diodes , avalanche transistors...Murphy's list goes on and
on...)
Following advice on this list, I tried several diodes using clip-
leads. I was able to get nice spikes from a couple of different low
freq tuning diodes but still no output from succeeding stages.
The best result is with an unlabelled miniature tuning diode which
gives positive going spikes 30 nS wide and 1 volt in amplitude at the cathode of the diode. These parameters would improve further if the
diode was properly mounted on the PCB. After passing through the HP
filter network however there is nothing visible at the emitter of the pulse amplifier transistor and no output. The transistor is a zero
biased common base connected 2N1143 which is a Ge pnp with a Ft of
200 MHz - another unobtainable Murphy favourite :-( Removing it for
testing requires messy surgery.
Any ideas? Have any of the mavens here actually measured the pulse
parameters in this circuit? Is the transistor faulty or is there just not enough drive to the amplifier? Unfortunately the manual is silent on the subject.
On the bright side, I'm learning a lot (small consolation).
Any help appreciated,
Morris
|
Hi all,
I have been working on a 5110A synth driver with a problem of no
output. After getting a manual I diagnosed a failure of the Step
Recovery Diode in the harmonic generator and sure 'nough, it's open
circuited. (Why is it always these rare parts that fail - SRDs,
tunnel diodes , avalanche transistors...Murphy's list goes on and
on...)
Following advice on this list, I tried several diodes using clip-
leads. I was able to get nice spikes from a couple of different low
freq tuning diodes but still no output from succeeding stages.
The best result is with an unlabelled miniature tuning diode which
gives positive going spikes 30 nS wide and 1 volt in amplitude at the
cathode of the diode. These parameters would improve further if the
diode was properly mounted on the PCB. After passing through the HP
filter network however there is nothing visible at the emitter of the
pulse amplifier transistor and no output. The transistor is a zero
biased common base connected 2N1143 which is a Ge pnp with a Ft of
200 MHz - another unobtainable Murphy favourite :-( Removing it for
testing requires messy surgery.
Any ideas? Have any of the mavens here actually measured the pulse
parameters in this circuit? Is the transistor faulty or is there just
not enough drive to the amplifier? Unfortunately the manual is silent
on the subject.
On the bright side, I'm learning a lot (small consolation).
Any help appreciated,
Morris
|
Hello Henry,
Take the coversm off of the 8750A and look and see if the other interface board is attached to the bottom of one of the covers. The standard unit comes with two interface boards and you may find the spectrum analyzer board
inside. I have two or three of these and all of them have a complete complement of cards so you have a chance at finding the one that you need for the 141.
Also I have used the GLK cables and they work quite well. You could buy the parts at one time from Newark Electronics and make it yourself but if you don't have the crimping tools for the coaxial connectors it's not worth
the effort since the component parts are not cheap either especially if you mess some up trying to make the cable.
Good luck and let us know how you made out.
Sam
W3OHM
hp_agilent_equipment@... wrote:
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There are 4 messages in this issue.
Topics in this digest:
1. HP 8750A normalizer on 141T ?
From: "Henry Kolesnik" <kolesnik@...>
2. RE: HP 8750A normalizer on 141T ?
From: "John Miles" <jmiles@...>
3. Re: HP 8750A normalizer on 141T ?
From: "Henry Kolesnik" <kolesnik@...>
4. Anybody have HPIB codes for 5005B Signature Multimeter?
From: leedyt@...
________________________________________________________________________
________________________________________________________________________
Message: 1
Date: Mon, 24 May 2004 13:19:59 -0500
From: "Henry Kolesnik" <kolesnik@...>
Subject: HP 8750A normalizer on 141T ?
Can the HP 8750A normalizer be used with the HP 141T? If so what kind of interface and cable is required. I have both but no interfaces or cables.
tnx
Hank WD5JFR
[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
Message: 2
Date: Mon, 24 May 2004 11:25:15 -0700
From: "John Miles" <jmiles@...>
Subject: RE: HP 8750A normalizer on 141T ?
Cables can be obtained from .
There will be some sticker shock involved.
I believe there is also a "personality module" involved that configures the
8750A for either the 8505A or 141T. The cable alone might not be enough;
you should ask George about this if you contact him re: the cable.
-- john KE5FX
-----Original Message-----
From: Henry Kolesnik [mailto:kolesnik@...]
Sent: Monday, May 24, 2004 11:20 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] HP 8750A normalizer on 141T ?
Can the HP 8750A normalizer be used with the HP 141T? If so what kind of
interface and cable is required. I have both but no interfaces or cables.
tnx
Hank WD5JFR
----------------------------------------------------------------------------
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[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
Message: 3
Date: Mon, 24 May 2004 13:52:47 -0500
From: "Henry Kolesnik" <kolesnik@...>
Subject: Re: HP 8750A normalizer on 141T ?
Mine has the network analyzer interface that I failed to mention. I did see the prices and on the glkinst site and I can't justify them.
73
Hank WD5JFR
----- Original Message -----
From: John Miles
To: hp_agilent_equipment@...
Sent: Monday, May 24, 2004 1:25 PM
Subject: RE: [hp_agilent_equipment] HP 8750A normalizer on 141T ?
Cables can be obtained from . There will be some sticker shock involved.
I believe there is also a "personality module" involved that configures the 8750A for either the 8505A or 141T. The cable alone might not be enough; you should ask George about this if you contact him re: the cable.
-- john KE5FX
-----Original Message-----
From: Henry Kolesnik [mailto:kolesnik@...]
Sent: Monday, May 24, 2004 11:20 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] HP 8750A normalizer on 141T ?
Can the HP 8750A normalizer be used with the HP 141T? If so what kind of interface and cable is required. I have both but no interfaces or cables.
tnx
Hank WD5JFR
----------------------------------------------------------------------------
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a.. To visit your group on the web, go to:
b.. To unsubscribe from this group, send an email to:
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c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
Message: 4
Date: Mon, 24 May 2004 22:55:32 EDT
From: leedyt@...
Subject: Anybody have HPIB codes for 5005B Signature Multimeter?
I am looking for the HPIB (IEEE-488) commands for a 5005B Signature
Multimeter. Usually, summaries of these codes are given on one page of the manual.
Any help would be appreciated!
Tom Leedy
Clarksburg, MD 20871
leedyt@...
[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
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|
Anybody have HPIB codes for 5005B Signature Multimeter?
I am looking for the HPIB (IEEE-488) commands for a 5005B Signature Multimeter.? Usually, summaries of these codes are given on one page of the manual.? Any help would be appreciated!
Tom Leedy
Clarksburg, MD 20871
leedyt@...
|
Re: HP 8750A normalizer on 141T ?
Mine has the network analyzer interface that I
failed to mention.? I did see the prices and on the glkinst site and I
can't justify them.
?
73
Hank WD5JFR
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Monday, May 24, 2004 1:25 PM
Subject: RE: [hp_agilent_equipment] HP
8750A normalizer on 141T ?
Cables can be obtained from??.?
There will be some sticker shock involved.
?
I
believe there is also a "personality module" involved that configures the
8750A for either the 8505A or 141T.? The cable alone might not
be?enough; you should ask George about this if you contact him re: the
cable.
?
--
john KE5FX
Can the HP 8750A normalizer be used with the HP
141T?? If so what kind of interface and cable is required.? I have
both but no interfaces or cables.
tnx
Hank WD5JFR
|
Re: HP 8750A normalizer on 141T ?
Cables
can be obtained from??.?
There will be some sticker shock involved.
?
I
believe there is also a "personality module" involved that configures the 8750A
for either the 8505A or 141T.? The cable alone might not be?enough;
you should ask George about this if you contact him re: the
cable.
?
--
john KE5FX
toggle quoted message
Show quoted text
Can the HP 8750A normalizer be used with the HP
141T?? If so what kind of interface and cable is required.? I have
both but no interfaces or cables.
tnx
Hank WD5JFR
|
HP 8750A normalizer on 141T ?
Can the HP 8750A normalizer be used with the HP
141T?? If so what kind of interface and cable is required.? I have
both but no interfaces or cables.
tnx
Hank WD5JFR
|
Another go...parts needed
Hello again group,
I am again asking if anyone has, or knows of any HP 4260A Universal
Bridge units for sale, parts for sale or where I might find them.
I have an HP 4260A that needs the main rotating resistor (R3 - part
number 0428-7025), but is in otherwise good condition.
Thanks for any help,
Rod.
|
Opps, sorry about that. I meant to reply privately and sent to the list instead. Looks like I have done that more than once. Aside from that, thanks to everyone who responded, on and off list, to my introduction. The comments and suggestions were helpful and are appreciated. Finally, I found a documentation source which I don't recall seeing mentioned before -- . I was about to purchase something but had a question. I sent an email, but received no response. Does anyone know anything about this outfit? Jack Jack Crone wrote: Hi Robert,
I got out the 140A and found it to not be worth fooling with. The top, bottom, and one side cover are missing along with both handles. It looks like it was being used for parts to repair other units. The plugins do seem ok, but I can't test them without the 140A. Both plugins are now on eBay, auctions 3817471981 and 3817472794. I'll give you a report on the 851B when I get to it. <snip>
|
Hi Robert,
I got out the 140A and found it to not be worth fooling with. The top, bottom, and one side cover are missing along with both handles. It looks like it was being used for parts to repair other units. The plugins do seem ok, but I can't test them without the 140A. Both plugins are now on eBay, auctions 3817471981 and 3817472794. I'll give you a report on the 851B when I get to it.
Best wishes,
Jack
Robert Middleton wrote:
toggle quoted message
Show quoted text
Hello Jack.
Thank you for getting back to me. I could be interested in the 140A and also the 851B. Is there a possibility that you could send some photos of both? When your time permits please let me know.
Also, when you do happen to run accross any of the military versions that I have mentioned in my e-mail, (heavy rascals!). Thanks for your time and for your efforts and you and yours have a great day.
Respectfully, Robert
----- Original Message -----
*From:* Jack Crone <mailto:jcrone@...>
*To:* hp_agilent_equipment@...
<mailto:hp_agilent_equipment@...>
*Sent:* Sunday, May 16, 2004 7:56 PM
*Subject:* Re: [hp_agilent_equipment] Introduction
Hi Robert,
I have two HP scopes. One is a 130C, which I will probably keep, at
least for now. The other is a 140A with 1405A and 1420A plug ins. I
will
sell the 140A but at this time I have no idea what condition it is in,
either cosmetically or functionally. If you are interested in the 140A
let me know and I will check it out and get back to you.
I also have an 851B Spectrum Analyzer Display, but I only have the
display, not the rest of the unit. I will probably scrap the 851B for
parts so if you need any knobs or other scope parts contained in the
display unit I might be able to help you.
With best wishes,
Jack
===================================
JD Crone Associates, LLC
Computer Forensics - Data Recovery
5534 South Sixth Street #120
Klamath Falls, OR 97603
Voice: 626.441.8441
Fax: 626.441.6425
===================================
Robert Middleton wrote:
> Hello Jack.
> This is Robert. I have a list of H.P. Oscilliscopes I am looking
for.
> Perhaps you might have a few of them or perhaps you could point
me in
> the direction of where I can locate them? Enclosed is my list and
I will
> keep an eye out for manuals you need. Thanks.
> Respectfully, Robert
> p.s. Below is my list of H.P. oscilliscopes;
> OS-121A/USM-140
> OS-82A/USM-105
> OS-121C/USM-140
> OS-121D/USM-140
>
> ----- Original Message -----
> *From:* Jack Crone <mailto:jcrone@...>
> *To:* hp_agilent_equipment@...
> <mailto:hp_agilent_equipment@...>
> *Sent:* Thursday, May 13, 2004 10:07 PM
> *Subject:* [hp_agilent_equipment] Introduction
>
> Greetings All,
>
> I am a new member of the group and am looking forward to an
enjoyable
> time here.
>
> I have a large inventory of HP boat anchors which I want to
dispose of.
> Some I want to sell as functional units, others might get
parted out if
> there is any market for these parts. There are over 60 units
consisting
> of these models: 130C, 140A, 1900A, 200CD, 214A, 302B, 342A,
400D,
> 400H,
> 411A, 415B, 428A, 431B, 5210A, 523C, 606A, 608C, 608D, 612A,
614A,
> 616A,
> 618B, 626A, 694A, 851B, 8690A, and probably a few others.
>
> Any suggestions for disposing of this would be appreciated. I
also need
> manuals for most models and there are just too many to buy
them. I
> think
> that there are downloadable manuals for the equivalent
military units
> but I don't know the military model numbers. Is there a cross
reference
> list available?
>
> Thanks,
>
> Jack
>
>
>
> *Yahoo! Groups Sponsor*
> ADVERTISEMENT
>
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>
>
>
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hi all
looking for replacement timebase switch inserts
analog,sweepdelay and main timebase
(the black switch contact assembly with the contacts that break off
all the time)
any idears
regards eric
|
