Re: 85685A special cabling changes
Tim, You should be able to patch your bus interface cable (probably a 85662-60094). HSWP/OUT is pin 44 on the 50-pin, D-sub end of the cable. Just splice a wire for the SMA connection to the wire going to pin 44. Cover the splice with heat shrink and mount the SMA connector on the connector hood that does not have the label. The SMA needs to point down so it does not interfer with the RF bus cable. That's it. -George
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., Tim Hughes <timhughes@...> wrote: Bill , ?????????????? thanks for that information.
I guess there is a very small chance the original cable adapter pair, might not work with a newer instrument, but it seems pretty unlikely based on your usage.
Since these special cables can get to be pricey, it would be very useful to know if we could just patch in a coax connector to an existing cable,if we don't have the official cable.
Does anybody know if the coax tap, is just connected in parallel with one of the wires, so nothing needs to be cut,and if so to which connector pin??? Is there any changed termination/attenuation,?? required for that pin???
This should be relatively easy to test with an ohmmeter, for somebody who owns one and wanted to volunteer to add to the community knowledge base.
Tim
--- On Sat, 3/16/13, Bill Albert <billyatams@...> wrote:
From: Bill Albert <billyatams@...> Subject: [hp_agilent_equipment] Re: 85685A special cabling changes To: "hp_agilent_equipment@..." <hp_agilent_equipment@...> Date: Saturday, March 16, 2013, 6:21 AM
??
The Spec An / Preselector combination does not work without the HSWP connection. There is an error that announces the lack of the connection and the instrument will not go beyond that point.
As far as the two cable types with the different HSWP pickoff, there is no apparent difference in the functionality or effect on measurement accuracy. I had a set of the 8574A cables that had the pickoff on the cable connector side and used that set for performance testing of all vintages of the system when the customer cables were not shipped with the unit.
Bill
Sent from my iPhone
[Non-text portions of this message have been removed]
|
I have a non working Hp8350B Sweeper, with 83592A (10MHz-20GHz)Plug-in. On Power-up it occasionally displays error message E080. (now seems to be permanent). I would like to know what this means and would be grateful for advice.
There are other faults, which may be related: The "Unleveled" light comes on and remains on. There is no RF output. The correct voltages are present at the YIG Oscillator (5086-7337). It would seem the the YIG oscillator is probably dead. I might be looking for a replacement Yig, but not just yet.
Thanks Cliff G4BGP
|
Re: Service notes and Change Pages Quandary
Ooops sorry for the bandwidth that was supposed to just to Glenn :-)
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Show quoted text
On 3/17/2013 8:28 AM, Artekmedia wrote: Glenn
If your still interested I will send you a trial set to take a whack at
Dave ArtekManuals
On 3/4/2013 11:43 PM, Glenn Little WB4UIV wrote:
Dave
I have a Fujitsu FI 6140 high speed duplex scanner with ADF.
This is controlled by Adobe 8.
I will be happy to take on the task.
73 Glenn WB4UIV
At 02:32 PM 3/4/2013, you wrote:
Guys
I have a large pile of Service Notes and Change pages for 100's of HP test items.
Here is my quandary. Frankly the time and effort to scan these does not make economic sense to ArtekManuals, with the scanning backlog we have, our time and revenue stream is better served doing the main manuals. I have over 15 clips alone sitting in front of me at the moment, plus 1500+Original Ops/Service manuals to scan. The service notes in particular are of interest as they likely address known and common problems and how to fix them. So since I don't have an incentive to scan
them it seems likely they could sit here another 10 years taking up space and attracting insects.
Here is a proposal as a possible solution. I will box them up and mail them ( at my expense) to anyone in the continental USA who is willing to
scan them and post them on a public web site preferably KO4BB.com and one other TBD. There are at least 500-1000 pages so this is not a trivial task , nor do I expect it to get done overnight once you take responsibility for them. You need only a letter size flat bed scanner and a willingness to to do hi res and gray scale (of photo pages) when required although 90% of this can be done at 300DPI B&W. If you want to spread the work around among multiple participants that is fine with me but you work that out among yourselves, I am only going to ship one box of this stuff to one address and I DO NOT have the time to even "manage"
this project.
I am also open to other approaches besides the above.
The flag is raised those of you who are so moved may now salute..If I get no takers then I will likely at some point in the future get tired of tripping over them and consign them to be reincarnated as toilet paper tubes and cereal boxes.
Dave ArtekManuals.com
-- Dave Henderson Manuals@... <mailto:Manuals%40ArtekManuals.com> <mailto:Manuals%40ArtekManuals.com>
www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
------------------------------------
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-- Dave Henderson Manuals@... <mailto:Manuals%40ArtekManuals.com> www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
-- Dave Henderson Manuals@... www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
|
Re: Service notes and Change Pages Quandary
Glenn
If your still interested I will send you a trial set to take a whack at
Dave ArtekManuals
toggle quoted message
Show quoted text
On 3/4/2013 11:43 PM, Glenn Little WB4UIV wrote: Dave
I have a Fujitsu FI 6140 high speed duplex scanner with ADF.
This is controlled by Adobe 8.
I will be happy to take on the task.
73 Glenn WB4UIV
At 02:32 PM 3/4/2013, you wrote:
Guys
I have a large pile of Service Notes and Change pages for 100's of HP test items.
Here is my quandary. Frankly the time and effort to scan these does not make economic sense to ArtekManuals, with the scanning backlog we have, our time and revenue stream is better served doing the main manuals. I have over 15 clips alone sitting in front of me at the moment, plus 1500+Original Ops/Service manuals to scan. The service notes in particular are of interest as they likely address known and common problems and how to fix them. So since I don't have an incentive to scan them it seems likely they could sit here another 10 years taking up space and attracting insects.
Here is a proposal as a possible solution. I will box them up and mail them ( at my expense) to anyone in the continental USA who is willing to scan them and post them on a public web site preferably KO4BB.com and one other TBD. There are at least 500-1000 pages so this is not a trivial task , nor do I expect it to get done overnight once you take responsibility for them. You need only a letter size flat bed scanner and a willingness to to do hi res and gray scale (of photo pages) when required although 90% of this can be done at 300DPI B&W. If you want to spread the work around among multiple participants that is fine with me but you work that out among yourselves, I am only going to ship one box of this stuff to one address and I DO NOT have the time to even "manage" this project.
I am also open to other approaches besides the above.
The flag is raised those of you who are so moved may now salute..If I get no takers then I will likely at some point in the future get tired of tripping over them and consign them to be reincarnated as toilet paper tubes and cereal boxes.
Dave ArtekManuals.com
-- Dave Henderson Manuals@... <mailto:Manuals%40ArtekManuals.com> www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
------------------------------------
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-- Dave Henderson Manuals@... www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
|
Re: 85685A special cabling changes
Bill , ??????? thanks for that information.
I guess there is a very small chance the original cable adapter pair, might not work with a newer instrument, but it seems pretty unlikely based on your usage.
Since these special cables can get to be pricey, it would be very useful to know if we could just patch in a coax connector to an existing cable,if we don't have the official cable.
Does anybody know if the coax tap, is just connected in parallel with one of the wires, so nothing needs to be cut,and if so to which connector pin?? Is there any changed termination/attenuation,? required for that pin??
This should be relatively easy to test with an ohmmeter, for somebody who owns one and wanted to volunteer to add to the community knowledge base.
Tim
toggle quoted message
Show quoted text
--- On Sat, 3/16/13, Bill Albert <billyatams@...> wrote:
From: Bill Albert <billyatams@...> Subject: [hp_agilent_equipment] Re: 85685A special cabling changes To: "hp_agilent_equipment@..." <hp_agilent_equipment@...> Date: Saturday, March 16, 2013, 6:21 AM
?
The Spec An / Preselector combination does not work without the HSWP connection. There is an error that announces the lack of the connection and the instrument will not go beyond that point.
As far as the two cable types with the different HSWP pickoff, there is no apparent difference in the functionality or effect on measurement accuracy. I had a set of the 8574A cables that had the pickoff on the cable connector side and used that set for performance testing of all vintages of the system when the customer cables were not shipped with the unit.
Bill
|
Re: 8920B Saving last condition?
Greetings all,
Try saving the state as "POWERON", then restart...
Regards,
Ron Wilkinson
mi-Biz Systems Pty Ltd Perth - Western Australia
====
Artekmedia wrote:
toggle quoted message
Show quoted text
I'm guessing your running this thing in native mode but if you had it hooked up to the GPIB , then a simple routine could be written to set the new defaults on start-up. Actually thinking about your request in more detail the routine could be used to "capture" the current settings and store them ..then you just run the recall routine on start-up next time. The more I think about this GPIB is the answer, not to mention other perks like data retention etc.
Dave NR1DX
On 3/16/2013 1:45 PM, David Kirkby wrote:
On 16 March 2013 03:21, k8kwh <khoehn@... <mailto:khoehn%40westshorefire.com>
<mailto:khoehn%40westshorefire.com>> wrote:
Hi,
Is there a fairly simple keyboard command that will set up the 8920B to 'hold' the last instrument settings for recall when the unit is next powered up?
I don't know about this instrument, but on my 8720D VNA, if a calibration state is saved with the name "UPRESET" then it will power up with that setup. It's a long shot, but you could try naming the setup you want UPRESET
Dave, G8WRB
-- Dave Henderson Manuals@... <mailto:Manuals%40ArtekManuals.com> www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
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I toured a factory a few years ago and was surprised to see several Heathkit counters, SM-2420's, still being used in their repair centers. I made a comment to one of the executives and he said they were all hooked up to a precision reference. But I notices last year while also in the same factory most of the Heathkit's were now gone and replaced by HP's. I did still see one. Maybe he was embarrassed I noticed the Heathkit's.
But he was right, the weakest link in the Heathkit SM-2420 is the crystal oven and with a precision reference the digital circuits will be just as good as the reference. I still have a SM-2420 and a spare for parts (unless I get around to fixing it), but I tend to use the HPs and a Racal the most.
The Heathkit's were great things to have during the 50' - 80's, as several of us would not have been able to afford much of any test equipment if it had not been for Heathkit. During most of that time there was not much good surplus stuff at great prices like there is today. Sad to think that may not be true in a few more years.
Hold on to the Heathkit for a back up or second counter. If the HP you get has a reference output you can use it to drive the Heathkit (if it is one that has a reference input) and then make two measurements at the same time off the same reference.
Steve
jcline01@... wrote:
toggle quoted message
Show quoted text
Max,
I grew up on Heathkit and built a few kits before they went under the first time. I recall building a HW101 HF transceiver, 20 MHz scope, HW2016 2-meter transceiver (my first fully synthesized rig), and a morse code keyer (u-matic). There was also the digital weather station and a digital clock for the ham shack. My dad also built a few Heathkits pieces of test gear i the 50's and 60's. It was all good inexpensive stuff that worked reasonably well.
The first time I used a Hewlett Packard frequency counter as an Electronic Technician back in the 1970's, I fell in love. I also appreciated the Fluke digital voltmeters and Tek scopes. But mostly, I dreamed one day of owning the Rolls Royce of test equipment.
Well, today, it is used and older technology, but it still has the wonderful quality that HP built into most every piece of equipment they engineered and constructed.
Best of luuck with the upgrades. I hope to join you in retiremnent in a few years!
Regards,
Joe --- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Max Robinson" <max@...> wrote:
Thank you Joe. I'll give it some thought. I do have a well equipped lab but my frequency counter is a Heathkit. I'm retired so I have lots of time
and experience. As the price of HP gear has come down I am in the process
of replacing my Heathkit gear with HP.
Regards.
Max. K 4 O DS.
Email: max@...
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@... <mailto:funwithtransistors-subscribe%40yahoogroups.com>
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----- Original Message ----- From: <jcline01@...> To: <hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>>
Sent: Saturday, March 16, 2013 5:51 AM Subject: [hp_agilent_equipment] Re: counter
Hi Max,
I have refurbished many of the 5335A, and several 5334A/B models over the
past several years. There is good news and bad news on how repairable these models may be. The bad news is that these are getting fairly long in
the tooth, and some parts are reaching the "unobtainium" stage. The good
news is that there are many of these counters still on the market, and if
one shops well, one may find a good "donor" or two to fix the first unit
for not too much money. This method is actually how I got started refurbishing HP gear. I bought a 5335A Counter for my setup, and the odds
were against me in that it did not work. The needed parts were not available through normal suppliers such as Mouser. So, I boughts another
unit, and it worked! It took two or three more units to find one that did
not work, so that I could make it a donor unit. By that time, I had a pretty good inventory of spare parts accummulated...
My experience is that only about 10% of the 5335A counters work out of the
box. The most common trouble has been the A3/A12 boards with bad Schmitt
amplifer ICs and signal relays. You need to be able to work on densly populated circuit boards to repair these. Another common problem has been
the power supply switching relays overheating on the older models. Later
designs cured this by changing from a 120 VAC fan to a 24 VDC fan along
with diode protection from the inductive load switching. I can go on for
many pages about other issues I have found in the 5335A models and repaired, but will spare you and the group. I you want more information,
please contact me offline.
The 5334A models have their share of issues, but because of simplicity and
somewhat newer design, the only real issues have been the signal relays on
the main board becoming stuck in one position or the other. This is easy
to fix with a soldering/desoldering station and parts that are currently
available from Mouser.
Now the real issue is that you need some basic test equipment in order to
align these counters once you get them working. When there are no defective parts, they work pretty well, but severe alignment problems will
stop them, and you need to be able to align your counter to ensure that
your measurements are accurate. For that, you will need a two channel oscilloscope, signal generators, such as a 3325A/B for the low frequencies, 8657A or similar for the high frequencies, pulse generator
(8082A), and a good frequency reference, such as Rhubidium Oscillator or
GPSDO (Z3801A or Thunderbolt). You may need some additional gear for Channel C such as a 8657B (1300 Mhz), a power meter/sensor, and a 50 ohm
splitter.
These are great counters and do a remarkable job, especially considering
their age. I truly enjoy working on them and refurbishing for others to
enjoy. Choose a reliable seller - many of the "Top Sellers" will send you
garbage and will not pack the equipment properly, but that is a whole separate topic. Best of luck with your decision.
Regards,
Joe, KN5U
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Max Robinson" <max@>
wrote:
If one gets one of these and it doesn't work, how repairable is it?
Regards.
Max. K 4 O DS.
Email: max@
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
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----- Original Message ----- From: "Peter Gottlieb" <hpnpilot@> To: <hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>>
Sent: Friday, March 15, 2013 9:54 PM Subject: Re: [hp_agilent_equipment] Re: counter
The 5334 and 5335 also have reciprocal counting, so keep an eye
out for
all of them. Last 5334B I got I paid $40 and it was mint. It didn't
have the
good timebase oscillator but I use a rubidium distributed around so
didn't
need it.
These prices are insane for what you get.
On 3/15/2013 6:06 AM, adrian_microwave wrote:
Paul,
if you want to measure low frequencies with high resolution,
you will
definitely want a counter with reciprocal counting. Otherwise
you're
waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang
for the
buck, IMO. They are powerful tools, small, come without a noisy fan and
can be
had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
<mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@> wrote:
I am beginning to shop for a better frequency counter for my
test
bench
I don't need uhf or even vhf but I do want something HP that
I can
rely on 10mhz and below
Something basically simple but not a toy. I have a couple of
those
already.
Compact size and latest gee whiz item is not so important as
budget,
reliability, serviceability. OK, I'd like cheap if that is
possible.
I don't mind fixing ebay finds if it isn't going to be impossible to
get it
calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
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Max,
I grew up on Heathkit and built a few kits before they went under the first time. I recall building a HW101 HF transceiver, 20 MHz scope, HW2016 2-meter transceiver (my first fully synthesized rig), and a morse code keyer (u-matic). There was also the digital weather station and a digital clock for the ham shack. My dad also built a few Heathkits pieces of test gear i the 50's and 60's. It was all good inexpensive stuff that worked reasonably well.
The first time I used a Hewlett Packard frequency counter as an Electronic Technician back in the 1970's, I fell in love. I also appreciated the Fluke digital voltmeters and Tek scopes. But mostly, I dreamed one day of owning the Rolls Royce of test equipment.
Well, today, it is used and older technology, but it still has the wonderful quality that HP built into most every piece of equipment they engineered and constructed.
Best of luuck with the upgrades. I hope to join you in retiremnent in a few years!
Regards,
Joe
toggle quoted message
Show quoted text
--- In hp_agilent_equipment@..., "Max Robinson" <max@...> wrote: Thank you Joe. I'll give it some thought. I do have a well equipped lab but my frequency counter is a Heathkit. I'm retired so I have lots of time and experience. As the price of HP gear has come down I am in the process of replacing my Heathkit gear with HP.
Regards.
Max. K 4 O DS.
Email: max@...
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@...
To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@...
----- Original Message ----- From: <jcline01@...> To: <hp_agilent_equipment@...> Sent: Saturday, March 16, 2013 5:51 AM Subject: [hp_agilent_equipment] Re: counter
Hi Max,
I have refurbished many of the 5335A, and several 5334A/B models over the past several years. There is good news and bad news on how repairable these models may be. The bad news is that these are getting fairly long in the tooth, and some parts are reaching the "unobtainium" stage. The good news is that there are many of these counters still on the market, and if one shops well, one may find a good "donor" or two to fix the first unit for not too much money. This method is actually how I got started refurbishing HP gear. I bought a 5335A Counter for my setup, and the odds were against me in that it did not work. The needed parts were not available through normal suppliers such as Mouser. So, I boughts another unit, and it worked! It took two or three more units to find one that did not work, so that I could make it a donor unit. By that time, I had a pretty good inventory of spare parts accummulated...
My experience is that only about 10% of the 5335A counters work out of the box. The most common trouble has been the A3/A12 boards with bad Schmitt amplifer ICs and signal relays. You need to be able to work on densly populated circuit boards to repair these. Another common problem has been the power supply switching relays overheating on the older models. Later designs cured this by changing from a 120 VAC fan to a 24 VDC fan along with diode protection from the inductive load switching. I can go on for many pages about other issues I have found in the 5335A models and repaired, but will spare you and the group. I you want more information, please contact me offline.
The 5334A models have their share of issues, but because of simplicity and somewhat newer design, the only real issues have been the signal relays on the main board becoming stuck in one position or the other. This is easy to fix with a soldering/desoldering station and parts that are currently available from Mouser.
Now the real issue is that you need some basic test equipment in order to align these counters once you get them working. When there are no defective parts, they work pretty well, but severe alignment problems will stop them, and you need to be able to align your counter to ensure that your measurements are accurate. For that, you will need a two channel oscilloscope, signal generators, such as a 3325A/B for the low frequencies, 8657A or similar for the high frequencies, pulse generator (8082A), and a good frequency reference, such as Rhubidium Oscillator or GPSDO (Z3801A or Thunderbolt). You may need some additional gear for Channel C such as a 8657B (1300 Mhz), a power meter/sensor, and a 50 ohm splitter.
These are great counters and do a remarkable job, especially considering their age. I truly enjoy working on them and refurbishing for others to enjoy. Choose a reliable seller - many of the "Top Sellers" will send you garbage and will not pack the equipment properly, but that is a whole separate topic. Best of luck with your decision.
Regards,
Joe, KN5U
--- In hp_agilent_equipment@..., "Max Robinson" <max@> wrote:
If one gets one of these and it doesn't work, how repairable is it?
Regards.
Max. K 4 O DS.
Email: max@
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@...
To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@...
----- Original Message ----- From: "Peter Gottlieb" <hpnpilot@> To: <hp_agilent_equipment@...> Sent: Friday, March 15, 2013 9:54 PM Subject: Re: [hp_agilent_equipment] Re: counter
The 5334 and 5335 also have reciprocal counting, so keep an eye out for all of them. Last 5334B I got I paid $40 and it was mint. It didn't have the good timebase oscillator but I use a rubidium distributed around so didn't need it.
These prices are insane for what you get.
On 3/15/2013 6:06 AM, adrian_microwave wrote:
Paul,
if you want to measure low frequencies with high resolution, you will definitely want a counter with reciprocal counting. Otherwise you're waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang for the buck, IMO. They are powerful tools, small, come without a noisy fan and can be had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@> wrote:
I am beginning to shop for a better frequency counter for my test bench
I don't need uhf or even vhf but I do want something HP that I can rely on 10mhz and below
Something basically simple but not a toy. I have a couple of those already.
Compact size and latest gee whiz item is not so important as budget, reliability, serviceability. OK, I'd like cheap if that is possible. I don't mind fixing ebay finds if it isn't going to be impossible to get it calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
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Thank you Joe. I'll give it some thought. I do have a well equipped lab but my frequency counter is a Heathkit. I'm retired so I have lots of time and experience. As the price of HP gear has come down I am in the process of replacing my Heathkit gear with HP.
Regards.
Max. K 4 O DS.
Email: max@...
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----- Original Message ----- From: <jcline01@...> To: <hp_agilent_equipment@...> Sent: Saturday, March 16, 2013 5:51 AM Subject: [hp_agilent_equipment] Re: counter Hi Max,
I have refurbished many of the 5335A, and several 5334A/B models over the past several years. There is good news and bad news on how repairable these models may be. The bad news is that these are getting fairly long in the tooth, and some parts are reaching the "unobtainium" stage. The good news is that there are many of these counters still on the market, and if one shops well, one may find a good "donor" or two to fix the first unit for not too much money. This method is actually how I got started refurbishing HP gear. I bought a 5335A Counter for my setup, and the odds were against me in that it did not work. The needed parts were not available through normal suppliers such as Mouser. So, I boughts another unit, and it worked! It took two or three more units to find one that did not work, so that I could make it a donor unit. By that time, I had a pretty good inventory of spare parts accummulated...
My experience is that only about 10% of the 5335A counters work out of the box. The most common trouble has been the A3/A12 boards with bad Schmitt amplifer ICs and signal relays. You need to be able to work on densly populated circuit boards to repair these. Another common problem has been the power supply switching relays overheating on the older models. Later designs cured this by changing from a 120 VAC fan to a 24 VDC fan along with diode protection from the inductive load switching. I can go on for many pages about other issues I have found in the 5335A models and repaired, but will spare you and the group. I you want more information, please contact me offline.
The 5334A models have their share of issues, but because of simplicity and somewhat newer design, the only real issues have been the signal relays on the main board becoming stuck in one position or the other. This is easy to fix with a soldering/desoldering station and parts that are currently available from Mouser.
Now the real issue is that you need some basic test equipment in order to align these counters once you get them working. When there are no defective parts, they work pretty well, but severe alignment problems will stop them, and you need to be able to align your counter to ensure that your measurements are accurate. For that, you will need a two channel oscilloscope, signal generators, such as a 3325A/B for the low frequencies, 8657A or similar for the high frequencies, pulse generator (8082A), and a good frequency reference, such as Rhubidium Oscillator or GPSDO (Z3801A or Thunderbolt). You may need some additional gear for Channel C such as a 8657B (1300 Mhz), a power meter/sensor, and a 50 ohm splitter.
These are great counters and do a remarkable job, especially considering their age. I truly enjoy working on them and refurbishing for others to enjoy. Choose a reliable seller - many of the "Top Sellers" will send you garbage and will not pack the equipment properly, but that is a whole separate topic. Best of luck with your decision.
Regards,
Joe, KN5U
--- In hp_agilent_equipment@..., "Max Robinson" <max@...> wrote:
If one gets one of these and it doesn't work, how repairable is it?
Regards.
Max. K 4 O DS.
Email: max@...
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
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----- Original Message ----- From: "Peter Gottlieb" <hpnpilot@...> To: <hp_agilent_equipment@...> Sent: Friday, March 15, 2013 9:54 PM Subject: Re: [hp_agilent_equipment] Re: counter
The 5334 and 5335 also have reciprocal counting, so keep an eye out for all of them. Last 5334B I got I paid $40 and it was mint. It didn't have the good timebase oscillator but I use a rubidium distributed around so didn't need it.
These prices are insane for what you get.
On 3/15/2013 6:06 AM, adrian_microwave wrote:
Paul,
if you want to measure low frequencies with high resolution, you will definitely want a counter with reciprocal counting. Otherwise you're waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang for the buck, IMO. They are powerful tools, small, come without a noisy fan and can be had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@> wrote:
I am beginning to shop for a better frequency counter for my test bench
I don't need uhf or even vhf but I do want something HP that I can rely on 10mhz and below
Something basically simple but not a toy. I have a couple of those already.
Compact size and latest gee whiz item is not so important as budget, reliability, serviceability. OK, I'd like cheap if that is possible. I don't mind fixing ebay finds if it isn't going to be impossible to get it calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
--------------------------------------------------------------------------------
No virus found in this message. Checked by AVG - www.avg.com <> Version: 10.0.1430 / Virus Database: 2641/5673 - Release Date: 03/14/13
------------------------------------
Yahoo! Groups Links
------------------------------------
Yahoo! Groups Links
|
HP/Agilent Drive Test Systems Receivers
Does anyone know anything about how to talk to these boxes? They are very nice receivers with built-in GPS. Comms are via RS232, but have no data on what commands are. I've been told that the FPGA firmware was downloaded at startup, which might make things a bit more difficult.
I know Agilent sold the business to JDSU a few years back.
Thanks.
|
Re: 8920B Saving last condition?
I'm guessing your running this thing in native mode but if you had it hooked up to the GPIB , then a simple routine could be written to set the new defaults on start-up. Actually thinking about your request in more detail the routine could be used to "capture" the current settings and store them ..then you just run the recall routine on start-up next time. The more I think about this GPIB is the answer, not to mention other perks like data retention etc.
Dave NR1DX
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On 3/16/2013 1:45 PM, David Kirkby wrote: On 16 March 2013 03:21, k8kwh <khoehn@... <mailto:khoehn%40westshorefire.com>> wrote:
Hi,
Is there a fairly simple keyboard command that will set up the 8920B to 'hold' the last instrument settings for recall when the unit is next powered up?
I don't know about this instrument, but on my 8720D VNA, if a calibration state is saved with the name "UPRESET" then it will power up with that setup. It's a long shot, but you could try naming the setup you want UPRESET
Dave, G8WRB
-- Dave Henderson Manuals@... www.Artekmanuals.com PO Box 175 Welch,MN 55089 651-269-4265
|
Re: 8920B Saving last condition?
On 16 March 2013 03:21, k8kwh <khoehn@...> wrote: Hi,
Is there a fairly simple keyboard command that will set up the 8920B to 'hold' the last instrument settings for recall when the unit is next powered up? I don't know about this instrument, but on my 8720D VNA, if a calibration state is saved with the name "UPRESET" then it will power up with that setup. It's a long shot, but you could try naming the setup you want UPRESET Dave, G8WRB
|
Re: 8920B Saving last condition?
My 8920B allows you to save a number of setups. You can use the limited naming capability to ID the frequency it is setup for. As an example, 443500 is my UHF repeater test setup. That's about the best it will do.
Tom Holmes, N8ZM Tipp City, OH EM79
|
Re: 85685A special cabling changes
The Spec An / Preselector combination does not work without the HSWP connection. There is an error that announces the lack of the connection and the instrument will not go beyond that point.
As far as the two cable types with the different HSWP pickoff, there is no apparent difference in the functionality or effect on measurement accuracy. I had a set of the 8574A cables that had the pickoff on the cable connector side and used that set for performance testing of all vintages of the system when the customer cables were not shipped with the unit.
Bill
|
Hi Max,
I have refurbished many of the 5335A, and several 5334A/B models over the past several years. There is good news and bad news on how repairable these models may be. The bad news is that these are getting fairly long in the tooth, and some parts are reaching the "unobtainium" stage. The good news is that there are many of these counters still on the market, and if one shops well, one may find a good "donor" or two to fix the first unit for not too much money. This method is actually how I got started refurbishing HP gear. I bought a 5335A Counter for my setup, and the odds were against me in that it did not work. The needed parts were not available through normal suppliers such as Mouser. So, I boughts another unit, and it worked! It took two or three more units to find one that did not work, so that I could make it a donor unit. By that time, I had a pretty good inventory of spare parts accummulated...
My experience is that only about 10% of the 5335A counters work out of the box. The most common trouble has been the A3/A12 boards with bad Schmitt amplifer ICs and signal relays. You need to be able to work on densly populated circuit boards to repair these. Another common problem has been the power supply switching relays overheating on the older models. Later designs cured this by changing from a 120 VAC fan to a 24 VDC fan along with diode protection from the inductive load switching. I can go on for many pages about other issues I have found in the 5335A models and repaired, but will spare you and the group. I you want more information, please contact me offline.
The 5334A models have their share of issues, but because of simplicity and somewhat newer design, the only real issues have been the signal relays on the main board becoming stuck in one position or the other. This is easy to fix with a soldering/desoldering station and parts that are currently available from Mouser.
Now the real issue is that you need some basic test equipment in order to align these counters once you get them working. When there are no defective parts, they work pretty well, but severe alignment problems will stop them, and you need to be able to align your counter to ensure that your measurements are accurate. For that, you will need a two channel oscilloscope, signal generators, such as a 3325A/B for the low frequencies, 8657A or similar for the high frequencies, pulse generator (8082A), and a good frequency reference, such as Rhubidium Oscillator or GPSDO (Z3801A or Thunderbolt). You may need some additional gear for Channel C such as a 8657B (1300 Mhz), a power meter/sensor, and a 50 ohm splitter.
These are great counters and do a remarkable job, especially considering their age. I truly enjoy working on them and refurbishing for others to enjoy. Choose a reliable seller - many of the "Top Sellers" will send you garbage and will not pack the equipment properly, but that is a whole separate topic. Best of luck with your decision.
Regards,
Joe, KN5U
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Show quoted text
--- In hp_agilent_equipment@..., "Max Robinson" <max@...> wrote: If one gets one of these and it doesn't work, how repairable is it?
Regards.
Max. K 4 O DS.
Email: max@...
Transistor site Vacuum tube site: Woodworking site
Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@...
To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@...
----- Original Message ----- From: "Peter Gottlieb" <hpnpilot@...> To: <hp_agilent_equipment@...> Sent: Friday, March 15, 2013 9:54 PM Subject: Re: [hp_agilent_equipment] Re: counter
The 5334 and 5335 also have reciprocal counting, so keep an eye out for all of them. Last 5334B I got I paid $40 and it was mint. It didn't have the good timebase oscillator but I use a rubidium distributed around so didn't need it.
These prices are insane for what you get.
On 3/15/2013 6:06 AM, adrian_microwave wrote:
Paul,
if you want to measure low frequencies with high resolution, you will definitely want a counter with reciprocal counting. Otherwise you're waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang for the buck, IMO. They are powerful tools, small, come without a noisy fan and can be had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@> wrote:
I am beginning to shop for a better frequency counter for my test bench
I don't need uhf or even vhf but I do want something HP that I can rely on 10mhz and below
Something basically simple but not a toy. I have a couple of those already.
Compact size and latest gee whiz item is not so important as budget, reliability, serviceability. OK, I'd like cheap if that is possible. I don't mind fixing ebay finds if it isn't going to be impossible to get it calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
--------------------------------------------------------------------------------
No virus found in this message. Checked by AVG - www.avg.com <> Version: 10.0.1430 / Virus Database: 2641/5673 - Release Date: 03/14/13
------------------------------------
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|
85685A special cabling changes
I was reading through the online manuals for the 85685A pre-selector, and noticed that they show two different cabling setups in? two different manuals.
I was wondering if they are interchangeable or whether it depends on what revisions of the SA or pre-selector? you own?
The earlier 1995 (-90003) manual shows a small adapter that plugs in between? the system bus cable, just before it enters the SA itself. This is connected via a coax cable to the pre-selector. The connector cable is a BNC to SMA.
The later 1991 (-90098) user manual/programmers manual shows the same coax going to the middle of a modified system cable connector,which now has an SMA connector mounted directly on it at the display box end. The part number is stated as 85662- 60220 for the 50pin bus cable with SMA.
One might guess they are functionally identical and just save the adapter connector on the original setup?
Aparently the cable acts to adjust or blank output when the pre-scaler is changing from one band to another. The low frequency band has a number of separate prefilter bands and the high range two prefilter bands,the higher frequency one being the tuneable YAG filter. The manual also mentions tuning via varacter on some ranges.
The newer manual also says: "Verify the SA interconnect cable (50pin0 has a HSWP IN/Out port. If not replace with the one supplied"
Does the system work, with display glitches etc if the SMA connector is not hooked up?
Can anybody throw any light on these differences and has anybody tried patching a regular cable to add a SMA adapter?
Thanks, Tim
|
If one gets one of these and it doesn't work, how repairable is it?
Regards.
Max. K 4 O DS.
Email: max@...
Transistor site Vacuum tube site: Woodworking site Music site:
To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@...
To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@...
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----- Original Message ----- From: "Peter Gottlieb" <hpnpilot@...> To: <hp_agilent_equipment@...> Sent: Friday, March 15, 2013 9:54 PM Subject: Re: [hp_agilent_equipment] Re: counter The 5334 and 5335 also have reciprocal counting, so keep an eye out for all of them. Last 5334B I got I paid $40 and it was mint. It didn't have the good timebase oscillator but I use a rubidium distributed around so didn't need it.
These prices are insane for what you get.
On 3/15/2013 6:06 AM, adrian_microwave wrote:
Paul,
if you want to measure low frequencies with high resolution, you will definitely want a counter with reciprocal counting. Otherwise you're waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang for the buck, IMO. They are powerful tools, small, come without a noisy fan and can be had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@...> wrote:
I am beginning to shop for a better frequency counter for my test bench
I don't need uhf or even vhf but I do want something HP that I can rely on 10mhz and below
Something basically simple but not a toy. I have a couple of those already.
Compact size and latest gee whiz item is not so important as budget, reliability, serviceability. OK, I'd like cheap if that is possible. I don't mind fixing ebay finds if it isn't going to be impossible to get it calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
--------------------------------------------------------------------------------
No virus found in this message. Checked by AVG - www.avg.com <> Version: 10.0.1430 / Virus Database: 2641/5673 - Release Date: 03/14/13
------------------------------------
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|
8920B Saving last condition?
Hi,
Is there a fairly simple keyboard command that will set up the 8920B to 'hold' the last instrument settings for recall when the unit is next powered up?
It's time consuming to program 'typical' settings in memory, and even more so to keep track of the memory number of all frequently used settings when using the unit for essentially the same function on next boot after a shutdown.
Thanks......
|
The 5334 and 5335 also have reciprocal counting, so keep an eye out for all of them. Last 5334B I got I paid $40 and it was mint. It didn't have the good timebase oscillator but I use a rubidium distributed around so didn't need it.
These prices are insane for what you get.
toggle quoted message
Show quoted text
On 3/15/2013 6:06 AM, adrian_microwave wrote: Paul,
if you want to measure low frequencies with high resolution, you will definitely want a counter with reciprocal counting. Otherwise you're waiting for ages, especially with audio signals.
The 5315A (w/o HPIB) and 5316A/B (w/HPIB) are the best bang for the buck, IMO. They are powerful tools, small, come without a noisy fan and can be had for stunning little money if you are a little patient.
Adrian
--- In hp_agilent_equipment@... <mailto:hp_agilent_equipment%40yahoogroups.com>, "Paul Kraemer" <elespe@...> wrote:
I am beginning to shop for a better frequency counter for my test bench
I don't need uhf or even vhf but I do want something HP that I can rely on 10mhz and below
Something basically simple but not a toy. I have a couple of those already.
Compact size and latest gee whiz item is not so important as budget, reliability, serviceability. OK, I'd like cheap if that is possible. I don't mind fixing ebay finds if it isn't going to be impossible to get it calibrated.
So many models I thought I'd start here
Thank-you
Paul K0UYA
--------------------------------------------------------------------------------
No virus found in this message. Checked by AVG - www.avg.com <> Version: 10.0.1430 / Virus Database: 2641/5673 - Release Date: 03/14/13
|
Hi there. Can someone explain to me the difference between what these two instruments are used for? They seem very similar. 3709a/b - Constellation Analyzer 8980/81/a/b - Vector Analyzer and HP 8981A Vector Modulation Analyzer
I did some googling but am new to IQ concepts and I could not discern the differences in the function of these units. Could a simple explanation suffice? thanks
73 Eugene W2HX
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