Re: HP-8554L very low signal Solved with a VCO
I noticed that you found a 1/4-36 tap for SMA connectors. I have been looking for one for a long time online and at industrial supply houses, and even tool and die makers, with no luck. Please let us know where you got it - I think a lot of us would be interested. Does anyone know of a US supplier?
Ed
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Show quoted text
--- In hp_agilent_equipment@..., "Jos" <jos.raven@...> wrote:
Hi All,
The 1500MHZ LO did nor want to oscillate at that frequency, it insisted to oscillate at 1800Mhz there about.
So I decided to go another way and inject the LO signal.
HP had mounted a SMA connector on later models J2. It had a pick-up loop and was terminated with 50Ohm.
So I drilled a hole, bought a tap 1/4 x 36 (all the way from China)and made a pickup.
Bought a VCO from Mini-Circuits, the ZX95-1600W (+9dBm) and built a +12 V fixed and 0 - 18V variable voltage from the +20V line.
Good decoupling, especially on the tuning input, is necessary.
So far so good. The unit is operational again. But I miss some 10dB level. I probably can fix this with an in-line RF amp on 50MHz.
OR live with it knowing to add 10dB to the measured signal.
I'll post some photo's of this mod.
Jos PA0AMX
--- In hp_agilent_equipment@..., "Jos" <jos.raven@> wrote:
Still trying to repair the front end of my 8554L.
The 1500MHz oscillator is in trouble, on checking the output of the 550MHz IF I had a fine 1500MHz LO signal, an hour later it was gone and never came back.
I found a weaker signal @ 1800 MHz, the oscillator is working but not tunable.
In a later version of the 8554L HP used an external 1500MHz oscillator.
I am looking for a cheap 8554L or B to replace the unit or , again, a cheap small 1500MHz oscillator with SMA connector.
Anyone have a filled junk box?
Jos
PA0AMX
--- In hp_agilent_equipment@..., "Jos" <jos.raven@> wrote:
I have found the fault for the always ON UNCAL light.
Some PO has repaired the power supply board A5 as per Service Sheet 23
Q20, Q18 and Q25 were all 2N3702.
In itself there are OK, except for the pin-out, E,C,B
I replaced the with BC556 NPN, E,B,C (direct drop-in)and the UNCAL light functions again.
No solace for the 8554L RF deck, still a very low signal.
The hunt goes on.
Jos PA0AMX
|
Re: Which HP spectrum analzyer is structurally most si...
Wow! I will keep a note of it. ________________________________ From: "w0eom@..." <w0eom@...> To: hp_agilent_equipment@... Sent: Wednesday, August 24, 2011 12:47 PM Subject: Re: [hp_agilent_equipment] Which HP spectrum analzyer is structurally most si... ? Amos - one other note. the 8569B extended the harmonic mixer range to 110 ghz vs 40 ghz for the A, which was a big deal for me. Will In a message dated 8/24/2011 5:13:59 A.M. Pacific Daylight Time, amosku@... writes: Tim, I see. Very helpful tips. Thank you. Best Regards, Amos Ku On Aug 24, 2011, at 5:10 AM, mai1grp8s <_mai1grp8s@... (mailto:mai1grp8s@...) > wrote: Hi Amos,
Try this link
_ ()
My understanding is this: The 8565A was basically squeezing a 10
MHz-22GHz 141 specAn into one small box. It has a YTF in front of the
mixer to remove harmonics and noise. It is a completely analog
instrument with some early discreet logic for control.
The 8569a/b is basically the same rf section with the analog storage
tube replaces with a low speed digital oscilloscope. This is done to
allow the slow sweeps to be digitised with the slow ADC technology
available at the time, while the higher frequencies required for zero
span could bypass this for display on the tube as a cro.
It is not practical to convert an 8565a to and 8569 by replacing the
display section. This was accomplished with the 8750 normalizer..
The rf section is slightly different with better dynamic range and noise
floor - but not too different.
If the display or tube is shot, you could use the normalizer and a
normal oscilloscope. Slow sweeps can be captured woth a pc sound card
and there are some projects on the web.
Good luck
Tim
[Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
|
Re: Which HP spectrum analzyer is structurally most si...
Amos - one other note. the 8569B extended the harmonic mixer range to
110 ghz vs 40 ghz for the A, which was a big deal for me.
Will
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Show quoted text
In a message dated 8/24/2011 5:13:59 A.M. Pacific Daylight Time, amosku@... writes: Tim, I see. Very helpful tips. Thank you. Best Regards, Amos Ku On Aug 24, 2011, at 5:10 AM, mai1grp8s <_mai1grp8s@... (mailto:mai1grp8s@...) > wrote: Hi Amos,
Try this link
_ ()
My understanding is this: The 8565A was basically squeezing a 10
MHz-22GHz 141 specAn into one small box. It has a YTF in front of the
mixer to remove harmonics and noise. It is a completely analog
instrument with some early discreet logic for control.
The 8569a/b is basically the same rf section with the analog storage
tube replaces with a low speed digital oscilloscope. This is done to
allow the slow sweeps to be digitised with the slow ADC technology
available at the time, while the higher frequencies required for zero
span could bypass this for display on the tube as a cro.
It is not practical to convert an 8565a to and 8569 by replacing the
display section. This was accomplished with the 8750 normalizer..
The rf section is slightly different with better dynamic range and noise
floor - but not too different.
If the display or tube is shot, you could use the normalizer and a
normal oscilloscope. Slow sweeps can be captured woth a pc sound card
and there are some projects on the web.
Good luck
Tim
[Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
|
Re: Which HP spectrum analzyer is structurally most similar to that of HP 8565A?
Tim, My final goal is to turn this spectrum analyzer into something that can digitize the result and output it to a digital format and be printed out or saved as jpeg file. Your suggestion look promising to me because I can probably redesign the digitizing Video circuit from HP8569 or something in the normalizer and connect HP 8565A to my computer, digital oscilloscope or even iPad to be displayed. I will have to think about how to design such changes. Amos ________________________________ From: mai1grp8s <mai1grp8s@...> To: hp_agilent_equipment@... Cc: Amos Ku <amosku@...> Sent: Wednesday, August 24, 2011 5:10 AM Subject: Re: [hp_agilent_equipment] Which HP spectrum analzyer is structurally most similar to that of HP 8565A? ? Hi Amos, Try this link My understanding is this: The 8565A was basically squeezing a 10 MHz-22GHz 141 specAn into one small box. It has a YTF in front of the mixer to remove harmonics and noise. It is a completely analog instrument with some early discreet logic for control. The 8569a/b is basically the same rf section with the analog storage tube replaces with a low speed digital oscilloscope. This is done to allow the slow sweeps to be digitised with the slow ADC technology available at the time, while the higher frequencies required for zero span could bypass this for display on the tube as a cro. It is not practical to convert an 8565a to and 8569 by replacing the display section. This was accomplished with the 8750 normalizer.. The rf section is slightly different with better dynamic range and noise floor - but not too different. If the display or tube is shot, you could use the normalizer and a normal oscilloscope. Slow sweeps can be captured woth a pc sound card and there are some projects on the web. Good luck Tim [Non-text portions of this message have been removed]
|
Re: HP-8554L very low signal Solved with a VCO
Hi All,
The 1500MHZ LO did nor want to oscillate at that frequency, it insisted to oscillate at 1800Mhz there about.
So I decided to go another way and inject the LO signal.
HP had mounted a SMA connector on later models J2. It had a pick-up loop and was terminated with 50Ohm.
So I drilled a hole, bought a tap 1/4 x 36 (all the way from China)and made a pickup.
Bought a VCO from Mini-Circuits, the ZX95-1600W (+9dBm) and built a +12 V fixed and 0 - 18V variable voltage from the +20V line.
Good decoupling, especially on the tuning input, is necessary.
So far so good. The unit is operational again. But I miss some 10dB level. I probably can fix this with an in-line RF amp on 50MHz.
OR live with it knowing to add 10dB to the measured signal.
I'll post some photo's of this mod.
Jos PA0AMX
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., "Jos" <jos.raven@...> wrote:
Still trying to repair the front end of my 8554L.
The 1500MHz oscillator is in trouble, on checking the output of the 550MHz IF I had a fine 1500MHz LO signal, an hour later it was gone and never came back.
I found a weaker signal @ 1800 MHz, the oscillator is working but not tunable.
In a later version of the 8554L HP used an external 1500MHz oscillator.
I am looking for a cheap 8554L or B to replace the unit or , again, a cheap small 1500MHz oscillator with SMA connector.
Anyone have a filled junk box?
Jos
PA0AMX
--- In hp_agilent_equipment@..., "Jos" <jos.raven@> wrote:
I have found the fault for the always ON UNCAL light.
Some PO has repaired the power supply board A5 as per Service Sheet 23
Q20, Q18 and Q25 were all 2N3702.
In itself there are OK, except for the pin-out, E,C,B
I replaced the with BC556 NPN, E,B,C (direct drop-in)and the UNCAL light functions again.
No solace for the 8554L RF deck, still a very low signal.
The hunt goes on.
Jos PA0AMX
|
Re: HP-85662A display help.
So you think the tube is at his end?
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Show quoted text
--- In hp_agilent_equipment@..., "tcxo" <tcxoe@...> wrote:
That's an interesting suggestion, worth trying, Claudio!
So far how much viewing time do you have after the filament voltage
increase?
...and what did you do to increase the filament voltage?
Thanks,
Greg
----- Original Message -----
From: "claudio ---------" <fabio_7759@...>
To: <hp_agilent_equipment@...>
Sent: Tuesday, August 23, 2011 4:39 PM
Subject: RE: [hp_agilent_equipment] Re: HP-85662A display help.
Hi Bas
I apologize for my bad English
It seems that the crt tube is perfect to run out, I got good results by
increasing the filament voltage of 1V, 1 .5V
Claudio
To: hp_agilent_equipment@...
From: ph0bas@...
Date: Tue, 23 Aug 2011 21:29:00 +0000
Subject: [hp_agilent_equipment] Re: HP-85662A display help.
Yes, true Greg, with very low intensity, focus is good.
Bas.
--- In hp_agilent_equipment@..., "tcxo" <tcxoe@> wrote:
Bas,
Does the on-screen grid sharpen-up when you turn-down the intensity
control? (The signal trace might not be visible at this lower intensity
setting, for purposes of this test.)
Greg
----- Original Message -----
From: ph0bas
To: hp_agilent_equipment@...
Sent: Tuesday, August 23, 2011 2:52 PM
Subject: [hp_agilent_equipment] HP-85662A display help.
Hi All,
I have a HP-85662A display unit with problems. Just the on-screen grid is
very unfocussed as if it is written twice with time difference.
It looks like it is just the grid not the signal, signal is good as it
seems and can be focussed.
Any thoughts, drop me a line!
Bas
------------------------------------
Yahoo! Groups Links
|
Spectrum analyzer HP 8559A and problem : noise and harmonics on the DC ray
Hi all !
I use an AS HP8559A with a visu HP853A.
The visu shown many ray around the DC ray. I think it's the mixer ? (
diode broken ? )
When I use it in 20 MHz/span, by example : the noise is low ( 1 square )
and the amplitude of the signal is correct ( +/- 1dB )
When I use it in mode "full span" , the noise floor go up (between the
2nd and 3rth square) and the amplitude of the signal is not good.
(I have tested the AS with a another HP853A and the problem is the same).
Anyone can help me...??
73 from Pascal F1LPV - Lille - North France
|
Re: seeking schematic for 1970-ish HP 200AB audio oscillator
re: 200CD -- I just got done fixing one, with the awesome and patient help of another group member. Although the unit had been modified in various ways (e.g. solid state diodes replacing the tube rectifier), after I returned it to stock the problem that caused the output to shut down after a few minutes turned out to be a bad output tube.
BTW the cabinet of the CD is deeper than that of the AB, at least for the units I have. The AB is lighter, and much simpler on the inside as you know. Mine has a 115/230 switch on the back, and uses the IEC style power cord.
Dave.
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Show quoted text
--- In hp_agilent_equipment@..., "Tom Manning" <AF4UG@...> wrote:
Hello Dave
The 200AB has many versions. I have a fairly late version and their power outputs are 6K6's. Another version has a redesigned power supply where the 5R4 was replaced with a different rectifier. I think the goal was to quiet down the 60/120 Hz hum and enhance reliability. I have repaired perhaps 20-30 and always had the TM for the particular model being repaired. As an after thought you might wish to look at a 200CD and you would find an entirely different instrument. The outside looks remain the same. I wish you the best of luck. 73 de Tom Manning, AF4UG
----- Original Message -----
From: blave
To: hp_agilent_equipment@...
Sent: Tuesday, August 23, 2011 12:43 PM
Subject: [hp_agilent_equipment] seeking schematic for 1970-ish HP 200AB audio oscillator
Hi folks,
I have a 200AB that is not completely healthy, which I would like to fix. I had printed out a PDF manual for it a while back since the 2nd page of that manual says "Serial 7725 and above". Mine certainly is "above", since it has one of the post-1960-style serial numbers (0962A23811). However, it is apparently a redesign since it uses 6V6 power tubes rather than the 6K6 of earlier versions. I think it was made around 1970 based on a date stamp on the power transformer.
I have looked high and low (hparchive, bama, Kuhn's site, etc.) on the web for a manual or schematic for this version and I cannot find one.
Does anyone have anything on hand? All I need is the schematic.
I am thinking that this was one of the last versions of the AB before it was discontinued in favor of a solid state replacement, and maybe is not all that common.
Thanks,
Dave B.
San Jose, CA
[Non-text portions of this message have been removed]
|
Re: seeking schematic for 1970-ish HP 200AB audio oscillator
wow this group is such a great resource. Thanks for following up -- I looked at your site but didn't see the 200AB listed so I didn't send you a mail about this.
cheers,
Dave.
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., Artekmedia <manuals@...> wrote:
Dave B
I erased your earlier email so I don't have your email address ..Another
list member is sending me the latest manual I'll have a PDF of it for
you in about a week ...he confirms that the manual he is sending has
the 6V6's in the output
Dave H
Artekmedia
On 8/23/2011 12:57 PM, J. Forster wrote:
Have you tried ArtekMedia.com? Email Dave, he can often help.
Best,
-John
===================
Hi folks,
I have a 200AB that is not completely healthy, which I would like to fix.
I had printed out a PDF manual for it a while back since the 2nd page of
that manual says "Serial 7725 and above". Mine certainly is "above", since
it has one of the post-1960-style serial numbers (0962A23811). However, it
is apparently a redesign since it uses 6V6 power tubes rather than the 6K6
of earlier versions. I think it was made around 1970 based on a date stamp
on the power transformer.
I have looked high and low (hparchive, bama, Kuhn's site, etc.) on the web
for a manual or schematic for this version and I cannot find one.
Does anyone have anything on hand? All I need is the schematic.
I am thinking that this was one of the last versions of the AB before it
was discontinued in favor of a solid state replacement, and maybe is not
all that common.
Thanks,
Dave B.
San Jose, CA
--
Dave& Lynn Henderson
Manuals@...
www.Artekmedia.com
PO Box 175
Welch,MN 55089
[Non-text portions of this message have been removed]
|
Hello John, ? Thank you for your input reason I ask, I have a 8563A and don't see many talk about that particular model.? Was wondering if no one likes this model or there were not many produced.? I am still trying to get familiar with it and use it to it maximum potential. ? Jon ? From: John Miles <jmiles@...> To: hp_agilent_equipment@... Sent: Tuesday, August 23, 2011 9:29 PM Subject: RE: [hp_agilent_equipment] Quality of SA ? -----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] On Behalf Of J
Sent: Tuesday, August 23, 2011 2:24 PM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] Quality of SA
Since we are having a discussion about HP SA's and their structure or
ruggedness, anyone know much about the 8563A .. ? The 8560A/E models are up there with the best portable SAs ever made. They'll be priced accordingly. -- john, KE5FX [Non-text portions of this message have been removed]
|
Re: Which HP spectrum analzyer is structurally most similar to that of HP 8565A?
Tim, I see. Very helpful tips. Thank you. Best Regards, Amos Ku On Aug 24, 2011, at 5:10 AM, mai1grp8s <mai1grp8s@...> wrote: Hi Amos,
Try this link
My understanding is this: The 8565A was basically squeezing a 10
MHz-22GHz 141 specAn into one small box. It has a YTF in front of the
mixer to remove harmonics and noise. It is a completely analog
instrument with some early discreet logic for control.
The 8569a/b is basically the same rf section with the analog storage
tube replaces with a low speed digital oscilloscope. This is done to
allow the slow sweeps to be digitised with the slow ADC technology
available at the time, while the higher frequencies required for zero
span could bypass this for display on the tube as a cro.
It is not practical to convert an 8565a to and 8569 by replacing the
display section. This was accomplished with the 8750 normalizer..
The rf section is slightly different with better dynamic range and noise
floor - but not too different.
If the display or tube is shot, you could use the normalizer and a
normal oscilloscope. Slow sweeps can be captured woth a pc sound card
and there are some projects on the web.
Good luck
Tim
[Non-text portions of this message have been removed]
|
Re: Which HP spectrum analzyer is structurally most similar to that of HP 8565A?
Hi Amos,
Try this link
My understanding is this: The 8565A was basically squeezing a 10 MHz-22GHz 141 specAn into one small box. It has a YTF in front of the mixer to remove harmonics and noise. It is a completely analog instrument with some early discreet logic for control.
The 8569a/b is basically the same rf section with the analog storage tube replaces with a low speed digital oscilloscope. This is done to allow the slow sweeps to be digitised with the slow ADC technology available at the time, while the higher frequencies required for zero span could bypass this for display on the tube as a cro.
It is not practical to convert an 8565a to and 8569 by replacing the display section. This was accomplished with the 8750 normalizer..
The rf section is slightly different with better dynamic range and noise floor - but not too different.
If the display or tube is shot, you could use the normalizer and a normal oscilloscope. Slow sweeps can be captured woth a pc sound card and there are some projects on the web.
Good luck
Tim
|
Re: HP 66001A MPS Keyboard
Hi Mike,
You could try a guy I do repair work for, I know he has one at the moment. Only thing wrong with it is that one of the "locks" on the RJ connector is broken off; the other is still intact so the connector will still lock into the mainframe. Given that it's not perfect, he may sell for a price you'd be happy with. His name is Marc Loponte and his company name is AcclaimTest. His email is mloponte AT acclaimtest.com
Tell him Jay sent you.
Jay
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., "g4wyz_lancs" <mike_prescott@...> wrote:
Hi
Can anyone help please. I'am looking for a HP 66001A MPS Keyboard for a HP/Agilent 66000A Mainframe. Does anyone have a surplus one OR know where to obtain one (I believe there is one on EBay for $550..ouch)
73's
Mike G4WYZ
|
Re: NI GPIB Drivers on Windows 7
Go to NI's website, and get the latest W7 compatable driver install kit
for your version of 7 and physical GPIB card combo. You can do that for
free, as you obviously have the hardware.
You will need (if you have not already) to create yourself an account
(for free) to do that. That also gives you access to the user driven
support forums, where lots of good people hang out.
NOTE! Not all NI GPIB cards are supported in all OS's.
Also, a minor tweak of NI's installer is needed to get it to run on
Windows 7 "Starter", once done, it works well. (It is officialy
supported, but for some odd reason, it was not enabled at shipping!)
DO NOT assume, that the XP(or Vista) installer will run on 7!
We have a few Windows 7 based NI-GPIB systems out there now, all work
well, both with third party instrumentation/control app's, and my own
creations!
If you have any old Windows 3.x 16 bit app's you need to run. DO NOT go
to Windows 7/64 bit, there is no 16 bit support.
Hope something helps.
Dave B.
|
Re: NI GPIB Drivers on Windows 7?
Eugene,
I looked up the version I am runing in Windows 7 and here is what I found:Unsupported NI-488.2 Versions on Windows 7
NI-488.2 for Windows, Version 2.7.2, was the first version to
support Windows 7. If you installed a version of NI-488.2 lower than Version
2.7.2 on Windows 7, you must uninstall it. To uninstall on Windows 7, go to the
Control Panel and select Uninstall a
Program.
?
Looks like you need at least Version 2.7.2. I would us the latest version 2.8.
?
George
?
From: W2HX <w2hx@...>
To: hp_agilent_equipment@...
Sent: Tuesday, August 23, 2011 7:04 PM
Subject: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
?
Wondering if anyone has had success installing the NI 488.2 drivers on
Windows 7? Specifically I have tried both V2.2 and V2.5. I have installed
this successfully on XP
---
73 Eugene W2HX
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
|
Re: NI GPIB Drivers on Windows 7?
Thanks. I should have been more specific that I am using the ENET drivers (not ENET-100) and alas, I believe that puts me square at the end of the road with the GPIB-ENET. Served me well for several years. Time to upgrade to prologix, I suspect. From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] On Behalf Of langlv56 Sent: Wednesday, August 24, 2011 12:34 AM To: hp_agilent_equipment@... Subject: [hp_agilent_equipment] Re: NI GPIB Drivers on Windows 7? The latest version 2.8 works nicely with Win7 (32 & 64 versions), both with PCI and USB devices. . Best Lang --- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com> , "G. K." <glkinst@...> wrote:
Me too. I have been running Windows 7 64-bit? and NI GPIB for a long time
without problems on both a? laptop and desktop machine. George
From: John Miles <jmiles@...>
To: hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com> Sent: Tuesday, August 23, 2011 7:24 PM
Subject: RE: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
?
-----Original Message-----
From: hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com> [mailto:hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com> ] On Behalf Of W2HX Sent: Tuesday, August 23, 2011 7:05 PM
To: hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com> Subject: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
Wondering if anyone has had success installing the NI 488.2 drivers on
Windows 7? Specifically I have tried both V2.2 and V2.5. I have
installed this successfully on XP
What's going wrong? I've been using the latest drivers for 64-bit Windows
7 here, no problems.
-- john, KE5FX
[Non-text portions of this message have been removed]
|
Re: NI GPIB Drivers on Windows 7?
The latest version 2.8 works nicely with Win7 (32 & 64 versions), both with PCI and USB devices.
.
Best
Lang
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., "G. K." <glkinst@...> wrote:
Me too. I have been running Windows 7 64-bit??and NI GPIB for a long time without problems on both a??laptop and desktop machine.
George
From: John Miles <jmiles@...>
To: hp_agilent_equipment@...
Sent: Tuesday, August 23, 2011 7:24 PM
Subject: RE: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
??
-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] On Behalf Of W2HX
Sent: Tuesday, August 23, 2011 7:05 PM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
Wondering if anyone has had success installing the NI 488.2 drivers on
Windows 7? Specifically I have tried both V2.2 and V2.5. I have installed
this successfully on XP
What's going wrong? I've been using the latest drivers for 64-bit Windows 7
here, no problems.
-- john, KE5FX
[Non-text portions of this message have been removed]
|
Re: NI GPIB Drivers on Windows 7?
Me too. I have been running Windows 7 64-bit?and NI GPIB for a long time without problems on both a?laptop and desktop machine. George From: John Miles <jmiles@...> To: hp_agilent_equipment@... Sent: Tuesday, August 23, 2011 7:24 PM Subject: RE: [hp_agilent_equipment] NI GPIB Drivers on Windows 7? ? -----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] On Behalf Of W2HX
Sent: Tuesday, August 23, 2011 7:05 PM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] NI GPIB Drivers on Windows 7?
Wondering if anyone has had success installing the NI 488.2 drivers on
Windows 7? Specifically I have tried both V2.2 and V2.5. I have installed
this successfully on XP
What's going wrong? I've been using the latest drivers for 64-bit Windows 7 here, no problems. -- john, KE5FX [Non-text portions of this message have been removed]
|
Re: seeking schematic for 1970-ish HP 200AB audio oscillator
Dave B
I erased your earlier email so I don't have your email address ..Another
list member is sending me the latest manual I'll have a PDF of it for
you in about a week ...he confirms that the manual he is sending has
the 6V6's in the output
Dave H
Artekmedia
toggle quoted message
Show quoted text
On 8/23/2011 12:57 PM, J. Forster wrote:
Have you tried ArtekMedia.com? Email Dave, he can often help.
Best,
-John
===================
Hi folks,
I have a 200AB that is not completely healthy, which I would like to fix.
I had printed out a PDF manual for it a while back since the 2nd page of
that manual says "Serial 7725 and above". Mine certainly is "above", since
it has one of the post-1960-style serial numbers (0962A23811). However, it
is apparently a redesign since it uses 6V6 power tubes rather than the 6K6
of earlier versions. I think it was made around 1970 based on a date stamp
on the power transformer.
I have looked high and low (hparchive, bama, Kuhn's site, etc.) on the web
for a manual or schematic for this version and I cannot find one.
Does anyone have anything on hand? All I need is the schematic.
I am thinking that this was one of the last versions of the AB before it
was discontinued in favor of a solid state replacement, and maybe is not
all that common.
Thanks,
Dave B.
San Jose, CA
--
Dave& Lynn Henderson
Manuals@...
www.Artekmedia.com
PO Box 175
Welch,MN 55089
|
Re: GPIB communications with HP 5334A, HP 5316A Counters
Hi, Jim --
IMHO, counters of that vintage are best operated in talk-only mode. Set up
the measurement parameters you want to use at the front panel, and just let
them spew the data without being addressed. Addressing them as intelligent
GPIB devices can be a pain in the neck because no two models are exactly
alike.
For that purpose, I've got a freeware Win32 app that (among many other
things) knows how to listen to a talk-only GPIB counter and plot the
resulting phase/frequency data. See
.
TimeLab is actually part of a commercial timing/PN analyzer
work-in-progress, so it will eventually have a nice user guide and more GUI
bells and whistles. Right now it's still a 'beta' with no documentation
other than the help text in the dialog boxes. But it is extremely good at
what it does, and well worth the head-scratching if you are working with
counters or timing analyzers. The source code is included so you can see
how it works and hack it as needed. The code you're looking for is in
drivers\talkonly\talkonly.cpp and drivers\shared\gpibport.cpp .
It needs a Prologix or NI interface for use with legacy GPIB counters, but
should also work with the 82357B adapter as long as you enable NI488.2
support. Check it out and see what you think...
-- john, KE5FX
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-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] On Behalf Of jdtckr
Sent: Tuesday, August 23, 2011 11:51 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] GPIB communications with HP 5334A, HP
5316A Counters
I have been struggling with harvesting data from the two mentioned meters,
and am hoping that some experience in the group can come to my rescue, or
at least enlightenment.
I am using an Agilent 82357B USB GPIB adaptor, with IOLibSuite 15.5 (or
16.1) under Windows XP Pro (and Windows 7 Pro) to communicate with my
test equipment quite nicely. My problem seems to be that the HP counters
act differently that my other test equipment, and I am trying to understand what is happening, and what to do about it.
I can send commands, like IN or RE, and they respond, and I can get data
back from them after a fashion, but *not* the way I get it from other
instruments. When addressed to talk, both counters send out a stream of
readings, until they are made to shut up (presumably by an UNTALK message
of some kind). I am much more used to a device issuing a single reading,
and exerting EOI during the last character, generally a CR or LF, which these counters do *not* seem to do. Whatever commands are issued when IOLib
times out will cause them to stop sending. I have also discovered that if I artificially induce EOI before the IOLib timeout, I can read all the data
accumulated before the EOI (albeit, the CRs and LFs are presented to me as
"<0d>" and "<0a>", as if they were un-decoded bytes, rather than whitespace, as with other instruments.)
First, is this the normal behavior for these counters? Is it possible that EOI has been damaged, and just not being exerted on the bus at the proper time? How are these devices normally read with IOLib? I know that, at least for the 5334A, there is a high-speed binary reading mode, which I am *not* using.
Second, is there a way around this behavior? I've read through the
programming sections of both of the manuals, and have not seen any
reference that I consider helpful in this area.
Third, is there a way to get IOLib to retrieve just one reading, and give it back to me? For this, I have tried telling IOLib that, for this device (the 82357B), it should terminate a read on an LF (actually, on a byte = 10, or 0x0A), but that does not seem to have any effect. Am I doing it wrong? Do I need to do
something specific to enable it after setting it?
Eventually, I expect to be writing C code to control and read my GPIB
equipment; does anyone have suggestions on where to start? I have `scopes,
counters, DMVs, and generators, and will be characterizing some timing
issues.
TIA,
JimT
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Jos Raven PA0AMX