Re: [hp agilent equipment] HP-8640B fine tune plastic joint
Hello Frank, I replaced my frequency vernier shaft coupling with a piece of small bore, high pressure flexible hosing. I cleaned both shafts with meths, wiped dry, fitted the tubing over the longer shaft, aligned the two ends and then slid the tubing back over the shorter section. I then fastened the tubing in place with two small hose clamps. 73 de Brian, VK2GCE, Brian Clarke BE, MBA, PhD, CPEng, FIEAust MD, Clarke & Associates P/L
On Sat, 24 Oct 2015 14:24:25 +0200, you asked:
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HP 856X SA with 11970 series external mixers
Hi,
I have an HP 8563E spectrum analyzer that I use with the 11970 series of un-preselected external mixers. It has Firmware Revision 940622 installed.
According to the manual for the 11970 mixers, in order to use the Signal Identification function, you must either have Firmware Revision less than or equal to 920528 or else have Option 008. So it appears that, for some reason, HP removed this function from later versions of the 856X series of SAs. And my 8563E lacks Option 008.
Absent the Signal Identification function, does anyone know of a way to identify spurious signals when using the 11970 series of external mixers?
Thanks!
Ray Perrin VE3FN
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WG: Re: Problem with 3MHz Filter in IF Section 8552B
? Obviously I had done something wrong with uploading pictures. But now it worked:
Span for screen shot is 0,2MHz/Div. ? I think I have located the problem to L2/C2 which cannot be tuned to a definite maximum. I will desolder and measure the parts. ? Regards Ernst ? ? ?
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Re: Where to find EZGPIB?
Hello,
since a few days, the website is online again with the original content.
Best regards,
Hartmut
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Re: HP-8640B fine tune plastic joint
I think saw a YouTube video on this repair.?
-Kelly
On Saturday, October 24, 2015 7:25 AM, "'Thomas S. Knutsen' la3pna@... [hp_agilent_equipment]" wrote:
?
Model building stores have flexible coupling joints for engine axles and such that works great as replacement for the orginal joint.
BR. Thomas
?
Hi all,
does anyone have a clever idea on how to replace that stupid little
flexible plastic joint on the fine frequency tune shaft? I'm not even
going to dream about gluing the two broken parts together, joint
surface is so small that I think it's a miracle that it holds at all
from the beginning.
Thanks in advance.
Frank IZ8DWF
-- ?Please? avoid sending? me? Word? or? PowerPoint? attachments. ?See? <> PDF is an better alternative and there are always LaTeX!
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RESTORING HP 8160A HELP w/ ROM IMAGE - HINTS
hello, I am restoring a 8160A if someone has the ROM image (use uprocess MC6809) and can send the file ... The ROM image of the older model (7 ROMs use the MC6800 uprocess) would also be useful. Any other maintenance tip of this equipment would be welcome.
Thank you in advance to all colleagues ..!
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HP 182C scope parts needed
Hi guys looking for a HV board? or just a T1 inverter transformer? my one is O/C Dave GM3WIL
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8720B Option 003 Extended Dynamic Range
Hi
I would like to install option 003 in my 8720B. I understand that this entails adding a 6dB Att in the main arm of the port 2 coupler to the sampler. Does anyone have any more information or a copy of the field installation instructions? I have the Keyword.
Thanks, Kevin
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8720B Option 003 Extended Dynamic Range
Hi
?
I would like to install option 003 in my 8720B.
?
I understand it entails adding a? 6dB Att in the main arm
of the port 2 coupler to the sampler.
?
Does anyone have a copy of the field installation instructions?
?
Thanks, Kevin
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Re: HP 8341A power supply schematics
Thanks Dennis, this link help me perfectly , I am now in search of the 24 pin HP extender to troubleshoot the A52 power supply board. Any help will greatly appreciated
73's from Belgium ON1EV GUY
Le Vendredi 23 octobre 2015 23h16, "Dennis Czelusniak czelusniakd@... [hp_agilent_equipment]"
?
I will not stand on my head for this one but I have a suspicion the 40 and 41 supplies are the same.
>>> http://literature.cdn.keysight.com/litweb/pdf/08340-90245.pdf?id=809483 <<<
Link to 8340B power supply drawing is much clearer than the 8341A drawing.
Dennis
--------------------------------------------
On Fri, 10/23/15, on1ev@... [hp_agilent_equipment] wrote:
Subject: [hp_agilent_equipment] HP 8341A power supply schematics
To: hp_agilent_equipment@...
Date: Friday, October 23, 2015, 2:29 PM
HI, all the HP lovers, I have received an HP 8341A
with a bad? power supply , +12 V is missing as well the
+5.2 V ,the schematics and the flowchart as an aid to
troubleshoot the power supply?available on the web are
unreadable .Is there a good soul with
decent schematic to help me ?please sent
it to ONE1V at yahoo.fr.Best
regardsON1EVGuy
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Re: HP-8640B fine tune plastic joint
Model building stores have flexible coupling joints for engine axles and such that works great as replacement for the orginal joint.
BR. Thomas
?
Hi all,
does anyone have a clever idea on how to replace that stupid little
flexible plastic joint on the fine frequency tune shaft? I'm not even
going to dream about gluing the two broken parts together, joint
surface is so small that I think it's a miracle that it holds at all
from the beginning.
Thanks in advance.
Frank IZ8DWF
-- ?Please? avoid sending? me? Word? or? PowerPoint? attachments. ?See? <> PDF is an better alternative and there are always LaTeX!
|
HP-8640B fine tune plastic joint
Hi all,
does anyone have a clever idea on how to replace that stupid little
flexible plastic joint on the fine frequency tune shaft? I'm not even
going to dream about gluing the two broken parts together, joint
surface is so small that I think it's a miracle that it holds at all
from the beginning.
Thanks in advance.
Frank IZ8DWF
|
Re: Help with HP 8657B Signal Generator
Thanks for the caveats.? Actually I was concerned about many of those same issues.? I still would like to fool around with GPIB but I will wait on that.? Even at around $50 it wouldn't be cost effective for my desires, which are only to get acquainted with the bus and see what I can figure out to do with it.? I never was much of a digital guy but the technology has so much digital in it these days that I might as well bite the bullet and see what I can learn.
As for my sweep generator requirement, it's been solved in an entirely different manner, not using the HP generator at all, but a spectrum analyzer with a tracking generator.? The generator does the sweeping and the analyzer detects the filter output.
I am learning how to make the SA do some of the things I didn't realize it could do, and am very happy to have it.
My 8657B still needs work; it won't put out the full voltage in the spec, and when I command any output voltage above, say, 500 mV, I get distortion instead.? I don't need that much signal yet it would be cool if I could fix it.
Additionally, there is an output for a spectrum display on my Kenwood transceiver but nothing much seems to come out of it.? Nowhere in the documentation is that signal described.? I have another unit like it and it's the same way.
So many projects, so little time.? And electronics is by no means my only hobby...
Bob
On Friday, October 23, 2015 8:27 PM, "Bob Bownes bownes@... [hp_agilent_equipment]" wrote:
Bob,
Beware of a number of factors in doing what you're trying to do.?
1) As others have mentioned you will not actually get a smooth sweep. You are getting frequency as a step function with settling time in between steps. The settling time between steps can be quite significant and can introduce quite a few artifacts that will dramatically impact your measurements.?
2) Not only will the step function settling time impact the frequency output but the power as well. Sweepers are designed to keep a constant output amplitude while sweeping across the chosen range. A really good one will even let you choose between unlevelled, internal leveling, and using an external power sensor to level the output. The last lets you remove the attenuation curve of the cable and other bits between the sweeper and the DUT.?
You get what you pay for in an HPIB to USB adapter. The low-cost adapters quite frequently simply do not work and/or do not have the same command that as the more professional ones.?
When you use an actual sweep generator, you can frequently get a voltage which is proportional to frequency out of the back of the instrument. This can be used to coordinate your sweep with other instruments. In fact, if you have as an RF power sensor, a sweep generator, and an oscilloscope, you can build a simple network analyzer that can be used to tune those bandpass filters.?
On Sep 25, 2015, at 22:40, Bob Albert bob91343@... [hp_agilent_equipment] < hp_agilent_equipment@...> wrote:
?
That looks great!? So the next step for me is to get a HPIB interface.? I see one on ebay for about $40 so if I use that software with it I should have a sweep generator.? What do you think?
Bob
? | ? | | ? | ? | ? | ? | ? | US $39.99 New in Business & Industrial, Electrical & Test Equipment, Test Equipment | | | Preview by Yahoo | | ? |
This program from Lance Lascari ( ) should work on the 8657B. ? -- john, KE5FX ? ? ? I was hoping to program it to step frequency between certain limits, automatically, so I can see the frequency and amplitude on an oscilloscope, much as you'd do with an ordinary sweep generator.? This would enable me to adjust the bandpass filters on my ham transceiver, for instance.? Going from point to point isn't a good way, too time consuming and too hard to see the overall effects of each adjustment. A sweep generator of decent quality is an expensive affair.
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Re: Help with HP 8657B Signal Generator
Bob,
Beware of a number of factors in doing what you're trying to do.?
1) As others have mentioned you will not actually get a smooth sweep. You are getting frequency as a step function with settling time in between steps. The settling time between steps can be quite significant and can introduce quite a few artifacts that will dramatically impact your measurements.?
2) Not only will the step function settling time impact the frequency output but the power as well. Sweepers are designed to keep a constant output amplitude while sweeping across the chosen range. A really good one will even let you choose between unlevelled, internal leveling, and using an external power sensor to level the output. The last lets you remove the attenuation curve of the cable and other bits between the sweeper and the DUT.?
You get what you pay for in an HPIB to USB adapter. The low-cost adapters quite frequently simply do not work and/or do not have the same command that as the more professional ones.?
When you use an actual sweep generator, you can frequently get a voltage which is proportional to frequency out of the back of the instrument. This can be used to coordinate your sweep with other instruments. In fact, if you have as an RF power sensor, a sweep generator, and an oscilloscope, you can build a simple network analyzer that can be used to tune those bandpass filters.?
toggle quoted message
Show quoted text
On Sep 25, 2015, at 22:40, Bob Albert bob91343@... [hp_agilent_equipment] < hp_agilent_equipment@...> wrote:
?
That looks great!? So the next step for me is to get a HPIB interface.? I see one on ebay for about $40 so if I use that software with it I should have a sweep generator.? What do you think?
Bob
? | ? | | ? | ? | ? | ? | ? | US $39.99 New in Business & Industrial, Electrical & Test Equipment, Test Equipment | | | Preview by Yahoo | | ? |
This program from Lance Lascari ( ) should work on the 8657B. ? -- john, KE5FX ? ? ? I was hoping to program it to step frequency between certain limits, automatically, so I can see the frequency and amplitude on an oscilloscope, much as you'd do with an ordinary sweep generator.? This would enable me to adjust the bandpass filters on my ham transceiver, for instance.? Going from point to point isn't a good way, too time consuming and too hard to see the overall effects of each adjustment. A sweep generator of decent quality is an expensive affair.
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Re: HP-7550 Plotter with HP-8568B
Hi Glen, TU very much for that ! ?Super. ?I tried searching yesterday and came across that site but every page I tried to pull up got me an error or time out message so I just assumed the link was no longer active and dead. ?I will try it again......maybe the museum was just having a bad day. ?TU again !
Gedas
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Re: HP-7550 Plotter with HP-8568B
On Fri, Oct 23, 2015 at 6:33 PM, w8bya@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
I wonder if anyone had the Operation and Interconnection document they could share with me. Thank you for helping out Tim.
7550 - Documentation SmallFormatPlottersProductBrief-5952-2214-8pages-Jul90.pdf SmallPlotterSuppliesCables-5954-7106-8pages-May86.pdf HPJournal1985Apr-7550-15pages.pdf 7550TechData-5953-9722-8pages-Apr84.pdf 7550A-OperationAndInterconnectionManual-07550-90002-163pages-Oct84.pdf 7550A-ServiceManual-07550-90000-175pages-Jan86.pdf 7550A-InterfacingAndProgrammingManual-07550-90001-483pages-Jan86.pdf 7550A_TechnicalData_5954-7084_4pages_Feb89.pdf 7550A_LiteratureFolder_5953-9798_2pages_Dec84.pdf 7550A_SalesGuide_5953-9795_17pages_Jan85.pdf 7550B_HardwareSupportManual_07550-90050_111pages_Sep93.pdf 7550A_PressRelease_15pages_Apr2-1984.pdf 7550Plus_ComputerInformation_07550-90052_173pages_Apr90.pdf 7550Plus_UsersGuide_07550-90051_129pages_Apr90.pdf
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Re: HP-7550 Plotter with HP-8568B
Hi Tim.....I have the manual for the HP-8568B and know how to change it's HP-IB address but I have not been able to locate The Operation and Interconnection?Manual for the 7550A. ?I have the??doc but the interconnect document is the one that I am missing that will help me read what address the plotter is currently set to and how to change it to something different. ?There are no dip switches or dip-bank that I spotted on the back to allow me to easily alter that setting.
I wonder if anyone had the Operation and Interconnection document they could share with me. ?Thank you for helping out Tim.
Gedas, W8BYA
Gallery at
Light travels faster than sound....? This is why some people appear bright until you hear them speak.? ?
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Re: Fake NI-USB-HS adapters on ebay.
On 10/23/2015 4:35 PM,
timhughes@... [hp_agilent_equipment] wrote:
Remember, When
checking if the driver complains, it is only the latest
version driver that can detect and report the clones.
Which driver rev were
you using?
Tim Hughes
488.2-2.1 as far as I can tell without turning it on again
And frankly, I'd prefer if it doesn't complain :^)??? Ignorance is
bliss.
Dan
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Re: HP-7550 Plotter with HP-8568B
I assume, you have configured addressing on units/printer as recomended by HP?
Remember the two units making up the SA,talk together extensively and I seem to remember there are some assumptions about the particular addresses and how they are connected on local 488 bus.?
Tim Hughes
From: "w8bya@... [hp_agilent_equipment]"
To: hp_agilent_equipment@...
Sent: Thursday, October 22, 2015 10:05 PM
Subject: [hp_agilent_equipment] HP-7550 Plotter with HP-8568B
?
Hello Group. ?I have been having a blast with my new to me HP-8568B SA, and since I had an old HP-7550A plotter available, I thought it would be fun to see if I could get them connected together and get some hard copies plotted.
My plotter has both an HP-IB and RS-232 interface and thus I have connected the two instruments together with an HP HP-IB interface cable I assume is good. ?I am not having much luck in knowing where to go next as far as configuring either the plotter or SA to make them see and talk to each other. I have DL the manual for the SA but not for the plotter yet and have not read the SA yet WRT plotter operations.
Is there anyone who can work with me on or off-line to get these two working together? ?TU.
Gedas, W8BYA
Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
|
Re: Fake NI-USB-HS adapters on ebay.
Remember, When checking if the driver complains, it is only the latest version driver that can detect and report the clones. Which driver rev were you using?
Tim Hughes
From: "Dan Rae danrae@... [hp_agilent_equipment]"
To: hp_agilent_equipment@...
Sent: Friday, October 23, 2015 4:12 PM
Subject: Re: [hp_agilent_equipment] Fake NI-USB-HS adapters on ebay.
?
On 10/3/2015 5:11 PM, 'John Miles'
john@... [hp_agilent_equipment] wrote:
The last couple of NI-USB-HS adapters
I've purchased have come from Chinese vendors with multiple
units for sale, but not the particular vendor or auction I
mentioned the other day.? Pricing was pretty similar, in the
$150-$200 range, which is a good buy if the adapter works.?
The ones I bought worked fine with the 3048A and everything
else around here, and I didn't get any notifications from
the NI driver software about them not being genuine NI
devices.? So "caveat emptor" sounds like the best advice.?
I will echo exactly John's experience with one of these "used"
adapters from China, it works fine with the 3048A software, and no
warnings from the NI driver either.? It has been the easiest install
with my 3048A system, quite a contrast to my attempts to get both an
-hp- card and an -hp- USB adapter to work on an XP computer.
I'm a happy emptor!
Dan
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Brian
bownes