Re: OT: Anyone know where to get EDC manuals?
Probably because Krohn-Hite is a small company.? ?They probably don't have many customers, so each one is a big deal.? I have worked for companies with 10 to 200,000 employees and several in between, so I have seen the whole gamut.
Jim Ford
Sent from my T-Mobile 4G LTE Device
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-------- Original message -------- From: "victor.silva via groups.io" <daejon1@...> Date: 3/17/22 7:35 AM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment] OT: Anyone know where to get EDC manuals?
Thanks David.? Yes, I knew that Krohn-Hite took over EDC in 1998 and I contacted the Service Dept last night. To my amazement the Service Manager at Krohn-Hite sent me a pdf of the Service/Calibration/Schematics first thing this morning. Amazing, not many companies would do that now. The manual you found is also useful so I thank you for that. --Victor
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Re: Test Downtime Costing You Money?
You are looking at this from the standpoint of a small business, ?how much do you think the contractual penalties are for a company like boeing if they have a committed to deliver a plane by date xy and slip schedule because a critical instrument is down? Or
if a company like Nokia agreed to deliver 10000 DTRX units to verizon ? ?Any slip in schedule if you produce stuff like this not only has the potential for contractual penalties but in addition you still have to pay employees and utilities to keep equipment
on a line running that is idle !?
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On Mar 17, 2022, at 08:40, Dr. David Kirkby, Kirkby Microwave Ltd via groups.io <drkirkby@...> wrote:
?
I am not disputing that it is on the low-side for very large companies, but the companies must have been carefully selected to get the result Keysight wanted. It¡¯s not a random selection of companies. I would expect companies like
Apple and Tesla would be in the list.?
I think the resulting figure of $100,000 is totally meaningless.?
Dave.?
On Wed, 16 Mar 2022 at 23:01, Lothar baier < Lothar@...> wrote:
I actually find this figure to be on the low side but it depends on the size of the company and whether its a production line or engineering lab !
When I worked back at Nokia i saw some figures that were in the $100-200K range per day for a production line tester?
On Mar 16, 2022, at 17:28, Dr. David Kirkby, Kirkby Microwave Ltd via
<drkirkby=[email protected]> wrote:
?
I found this email quite amusing. It appears to have from Keysight, although I have not verified that.
I wish downtime in my company cost $100,00 per day.?
---------- Forwarded message ---------
From: Keysight Technologies
<keysight_uk@...>
Date: Wed, 16 Mar 2022 at 22:05
Subject: Test Downtime Costing You Money?
To: < drkirkby@...>
Mitigate costly downtime risks with priority support.
53% reported losing $100,000 or more per day
|
|
|
|
Dear?David,
If your downtime costs big money, you¡¯re not alone.
We recently commissioned a survey of 305 test engineers across multiple industries that revealed nearly every company
experiences delays related to equipment configuration, training, or maintenance. 53% reported losing $100,000 or more per day waiting to resolve critical issues.
We can help. Whether you need fast access to our experts (¡Ü 2 business hours) or quick turnaround times on calibration
or repair (¡Ü 5 to 7 business days), will get you up and running again more quickly.
We¡¯re happy to share the complete survey results if you¡¯re interested. Download the ¡°¡± report.
Sincerely,
Keysight Technologies
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Keysight Technologies -
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--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge,
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United Kingdom
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Re: HP YIG replacement 3-7GHz
Yes HP typically used tuning sensitivity of 25-30MHz/mA intead of 20MHz which results in higher current draw , the question is whether the driver and PSU can handle this !
Usually temperature should not be a issue if you connect the heater?
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On Mar 17, 2022, at 06:23, Peter Hansen via groups.io <oz1lpr@...> wrote:
?
Hello Guys I have been trying to adapt new Yigs to the 8560X series problem is The HP one need less current for Tuning the complete range. And the Loop in the 8560X series is allowing around 10Mhz of drift.
When needed for higher current the temperature diference is bigger meaning the Yig will drift more than 10Mhz. This leaves the unit either LO unlock ERR301 cold or? when hot.
Redesigning the loop for bigger drift is not an easy task and I did not succed yet.
I was using the Avantek Yigs that can be found on ebay rather cheap but it will not make a easy change
best regards Peter
Hi Everyone,
HP YIG's have been failing due to age and some reports of batch oscillator transistor faults.?
Luis Cupido -?CT1DMK did conduct repairs until his transistor stock ran out. There are plenty
of freebay units about, good luck , and there is one reputable repair service about, but they are refurbished units,?not new, thus life expectancy is not guaranteed beyond initial 12 months.
I have been researching a very close replacement for your typical 3-7GHz YIG like the HP 5086-7903 and possibly others to suit spectrum analysers from DC-2.9GHz, 85/86 series possibly others.
A very close equivalent?unit is available after months of effort contacting Teledyne, The Teledyne FS3013R. Data sheet and an updated comparison sheet version 3.0 can be found in the files
area ,YIG directory Paul created.
I recently received a quote from a Teledyne agent in Aus, a new FS3013R is approx. US$1,332 delivered to Australia. However, the greater the QTY the lower the cost. I would like to
see a cost per unit for around US$900 delivered.
There is a catch, it is not a simple drop in and all will be OK. Extensive research and effort is needed to integrate the FS3013R into the analyser and it's YIG driver circuit along with the Cal process, however it is a very close fit??
?
I would like to see a cost per unit less then US$900 delivered.?This brings me to a question without notice, is anyone interested in a large group buy, the?greater
the QTY the lower the cost?
I just need numbers for now, the formalities can come later if the enthusiasm is there.
Regards
Gerald
Vk3GJM
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On Fri, Mar 4, 2022 at 05:25 PM, Hugh Gilbert wrote:
The cathode current of V1 and V3 is through R40.
Thanks for pointing that out. I thought I'd looked everywhere for another ground connection, but I missed that one, the important one. Sorry to be so tardy responding to this, but other things kept getting in the way. I was finally able to find time to dig that manual out of my files and find the quite obvious cathode ground. So R40 is the cathode bias resistor. Now everything makes sense. Thanks for posting this correction.
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Re: OT: Anyone know where to get EDC manuals?
Hello;
Would it be possible to get a copy of what he sent you please?
Thanks!
Ken
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Re: OT: Anyone know where to get EDC manuals?
Thanks David.? Yes, I knew that Krohn-Hite took over EDC in 1998 and I contacted the Service Dept last night.
To my amazement the Service Manager at Krohn-Hite sent me a pdf of the Service/Calibration/Schematics first thing this morning.
Amazing, not many companies would do that now.
The manual you found is also useful so I thank you for that.
--Victor
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Why a drop in quality in a later model?? There can only be one answer: some suit got a bonus for using a cheaper material.? Can I get a witness?
Jim Ford
Sent from my T-Mobile 4G LTE Device
toggle quoted message
Show quoted text
-------- Original message -------- From: Michael Kellett <mk@...> Date: 3/17/22 2:21 AM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment] 8903B Gooey Crystal
The Analyser's last known address was Cambridge, England. Damp, but cooler than Florida ! I made a mistake in my previous posts. I'm working on an 8903A and the 8903B at the same time. After I discovered the goo in the 8903B I picked up and photographed the pcb screen from the 8903A. The 'A has brown sticky back foam which looks OK. But when I looked at the pcb screen from the 'B all was revealed. It has black foam with clear signs of oozing and movement. I've pulled it off. I found the best way to get rid of the residue left on the screen was to warm it with a heat gun and rub it off with paper towels. (IPA turns it into disgusting sticky rubbery balls that are hard to remove.) The pictures show the pcb screen from the 8903B. I wonder why HP went backwards in foam quality between the A and the B instruments. MK
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Re: OT: Anyone know where to get EDC manuals?
Victor,
EDC is now (for several years) owned by Krohn-Hite.? Oddly, Krohn-Hite has a model 3200 variable filter unit, as well as the (formerly EDC) 3200 current calibrator.? Both bear the Krohn-Hite brand, so it's quite confusing.
Anyway, you can download a copy of the 3200 operating manual at?.? Unfortunately, no servicing info in the manual; perhaps you can contact them at and ask for a service manual.
Cheers,
DaveM
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Show quoted text
On Wed, Mar 16, 2022 at 08:07 PM, victor.silva wrote:
Just obtained a nicely working EDC 3200C AC/DC current calibrator and manuals for EDC stuff appears to be unobtanium.
I searched to see if there is an EDC Group, but no such luck.
Thanks for any help,
--Victor
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Re: Test Downtime Costing You Money?
I am not disputing that it is on the low-side for very large companies, but the companies must have been carefully selected to get the result Keysight wanted. It¡¯s not a random selection of companies. I would expect companies like Apple and Tesla would be in the list.?
I think the resulting figure of $100,000 is totally meaningless.?
Dave.?
On Wed, 16 Mar 2022 at 23:01, Lothar baier < Lothar@...> wrote:
I actually find this figure to be on the low side but it depends on the size of the company and whether its a production line or engineering lab !
When I worked back at Nokia i saw some figures that were in the $100-200K range per day for a production line tester?
On Mar 16, 2022, at 17:28, Dr. David Kirkby, Kirkby Microwave Ltd via <drkirkby=[email protected]> wrote:
?
I found this email quite amusing. It appears to have from Keysight, although I have not verified that.
I wish downtime in my company cost $100,00 per day.?
---------- Forwarded message ---------
From: Keysight Technologies
<keysight_uk@...>
Date: Wed, 16 Mar 2022 at 22:05
Subject: Test Downtime Costing You Money?
To: < drkirkby@...>
Mitigate costly downtime risks with priority support.
53% reported losing $100,000 or more per day
|
|
|
|
Dear?David,
If your downtime costs big money, you¡¯re not alone.
We recently commissioned a survey of 305 test engineers across multiple industries that revealed nearly every company
experiences delays related to equipment configuration, training, or maintenance. 53% reported losing $100,000 or more per day waiting to resolve critical issues.
We can help. Whether you need fast access to our experts (¡Ü 2 business hours) or quick turnaround times on calibration
or repair (¡Ü 5 to 7 business days), will get you up and running again more quickly.
We¡¯re happy to share the complete survey results if you¡¯re interested. Download the ¡°¡± report.
Sincerely,
Keysight Technologies
|
|
?
|
|
|
|
|
|
|
|
|
Keysight Technologies -
|
|
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? |
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--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge,
-- Dr. David Kirkby, Kirkby Microwave Ltd, drkirkby@...Telephone 01621-680100./ +44 1621 680100 Registered in England & Wales, company number 08914892. Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United Kingdom
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Re: Agilent EPM measurement board EEPROM
Hi Lothar,
I am also very interested.
Thanks.
Maurizio
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Youtube video HP service center in the 90th
This is a promo video from HP about their service center in the Netherlands. With thanks to Frans Koek who provided the video.
Lots of equipment and computers have fun. ? -Rik ? ?
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Re: Agilent EPM measurement board EEPROM
Hi Lothar, ? Will this also work on the E4419A? If so, I¡¯m very interested! ? Thanks, Stan ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Lothar baier
Sent: Wednesday, March 16, 2022 9:08 PM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Agilent EPM measurement board EEPROM ? I got a few E4418A meters , those as many may know do not support the E9300 series sensors , Agilent offered a upgrade kit which contained EEPROM for the measurement board, i still got one set and making copies for my meters , i was wondering if there is any merit in saving the contents as a binary file and making it available via this group??
|
Re: HP YIG replacement 3-7GHz
Hello Guys I have been trying to adapt new Yigs to the 8560X series problem is The HP one need less current for Tuning the complete range. And the Loop in the 8560X series is allowing around 10Mhz of drift.
When needed for higher current the temperature diference is bigger meaning the Yig will drift more than 10Mhz. This leaves the unit either LO unlock ERR301 cold or? when hot.
Redesigning the loop for bigger drift is not an easy task and I did not succed yet.
I was using the Avantek Yigs that can be found on ebay rather cheap but it will not make a easy change
best regards Peter
Hi Everyone,
HP YIG's have been failing due to age and some reports of batch oscillator transistor faults.?
Luis Cupido -?CT1DMK did conduct repairs until his transistor stock ran out. There are plenty
of freebay units about, good luck , and there is one reputable repair service about, but they are refurbished units,?not new, thus life expectancy is not guaranteed beyond initial 12 months.
I have been researching a very close replacement for your typical 3-7GHz YIG like the HP 5086-7903 and possibly others to suit spectrum analysers from DC-2.9GHz, 85/86 series possibly others.
A very close equivalent?unit is available after months of effort contacting Teledyne, The Teledyne FS3013R. Data sheet and an updated comparison sheet version 3.0 can be found in the files
area ,YIG directory Paul created.
I recently received a quote from a Teledyne agent in Aus, a new FS3013R is approx. US$1,332 delivered to Australia. However, the greater the QTY the lower the cost. I would like to
see a cost per unit for around US$900 delivered.
There is a catch, it is not a simple drop in and all will be OK. Extensive research and effort is needed to integrate the FS3013R into the analyser and it's YIG driver circuit along with the Cal process, however it is a very close fit??
?
I would like to see a cost per unit less then US$900 delivered.?This brings me to a question without notice, is anyone interested in a large group buy, the?greater
the QTY the lower the cost?
I just need numbers for now, the formalities can come later if the enthusiasm is there.
Regards
Gerald
Vk3GJM
|
Re: Agilent EPM measurement board EEPROM
Hi Lothar
Yes it would be great--have two of them-sure want to upgrade.
Hardy
?
?
I got a few E4418A meters , those as many may know do not
support the E9300 series sensors , Agilent offered a upgrade kit which
contained EEPROM for the measurement board, i still got one set and making
copies for my meters , i was wondering if there is any merit in saving the
contents as a binary file and making it available via this group??
|
Re: Agilent EPM measurement board EEPROM
Hi Lothar,
I'm sure that will come in handy to someone, and they would be
very thankful.
Cheers,
Razvan
On 17/03/2022 06:07, Lothar baier
wrote:
toggle quoted message
Show quoted text
I got a few E4418A meters , those as many may know do not support
the E9300 series sensors , Agilent offered a upgrade kit which
contained EEPROM for the measurement board, i still got one set
and making copies for my meters , i was wondering if there is any
merit in saving the contents as a binary file and making it
available via this group??
|
Re: Test Downtime Costing You Money?
One interesting point is stated on page 6:
"95% of testing professionals need help every month"
It coincides with our experience. Only a few students are able to
acquiring knowledge using the available literature - it is easier to ask than
to read... (probably)
BR Stephan
toggle quoted message
Show quoted text
On Mittwoch, 16. M?rz 2022 23:28:03 CET you wrote: I found this email quite amusing. It appears to have from Keysight,
although I have not verified that.
I wish downtime in my company cost $100,00 per day.
...
|
The Analyser's last known address was Cambridge, England. Damp, but cooler than Florida ! I made a mistake in my previous posts. I'm working on an 8903A and the 8903B at the same time. After I discovered the goo in the 8903B I picked up and photographed the pcb screen from the 8903A. The 'A has brown sticky back foam which looks OK. But when I looked at the pcb screen from the 'B all was revealed. It has black foam with clear signs of oozing and movement. I've pulled it off. I found the best way to get rid of the residue left on the screen was to warm it with a heat gun and rub it off with paper towels. (IPA turns it into disgusting sticky rubbery balls that are hard to remove.) The pictures show the pcb screen from the 8903B. I wonder why HP went backwards in foam quality between the A and the B instruments. MK  
|
Re: Test Downtime Costing You Money?
Yes, I got it too!
I've clearly been seriously undercharging my customers all these
years!
On 16/03/2022 22:28, Dr. David Kirkby,
Kirkby Microwave Ltd wrote:
toggle quoted message
Show quoted text
I found this email quite amusing. It appears to
have from Keysight, although I have not verified that.
I wish downtime in my company cost $100,00 per
day.?
---------- Forwarded message
---------
From: Keysight
Technologies <keysight_uk@...>
Date: Wed, 16 Mar 2022 at 22:05
Subject: Test Downtime Costing You Money?
To: < drkirkby@...>
Mitigate costly downtime risks with priority support.
53%
reported
losing
$100,000 or
more per day
|
|
|
|
Dear?David,
If your
downtime costs
big money,
you¡¯re not
alone.
We
recently
commissioned a
survey of 305
test engineers
across
multiple
industries
that revealed
nearly every
company
experiences
delays related
to equipment
configuration,
training, or
maintenance.
53% reported
losing
$100,000 or
more per day
waiting to
resolve
critical
issues.
We can
help. Whether
you need fast
access to our
experts (¡Ü 2
business
hours) or
quick
turnaround
times on
calibration or
repair (¡Ü 5 to
7 business
days), will get
you up and
running again
more quickly.
We¡¯re
happy to share
the complete
survey results
if you¡¯re
interested.
Download the ¡°¡± report.
Sincerely,
Keysight
Technologies
|
|
?
|
|
|
|
|
|
|
| Keysight
Technologies -
|
|
|
| |
| ? |
|
|
|
|
|
|
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3
6DT, United Kingdom
|
Re: HP8858B attenuator switch question
Lothar,
I went ahead and checked mine again after putting it back together and I noticed that the 40db pad is intermittent again.? So, just for the heck of it, I exercised the lever that pushes the two pins in to activate the pad, and it seems to be reliable again.? So, I'm wondering if there's actually a 4th failure mode where the pins get sticky.? Or is this just a coincidence of some sort and it'll get intermittent again down the road.
On Wednesday, March 16, 2022, 11:51:42 PM CDT, Lothar baier <lothar@...> wrote:
There are 3 failure modes for this kind of attenuators beside of pads being burned up by too much RF , the first one is dirty contact pads on the attenuator TFC , this is easy to resolve by simply cleaning the pads with IPA , the second failure mode is a bit
more severe and not as easy to fix , the cam that actuates the plungers actually tends to warp and/or wear over time as a result the contacts no longer make good contact and thats it , finally the 3rd failure mode is fatigue of the contact leaves which usually
requires replacing the contacts !
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Re: HP8858B attenuator switch question
There are 3 failure modes for this kind of attenuators beside of pads being burned up by too much RF , the first one is dirty contact pads on the attenuator TFC , this is easy to resolve by simply cleaning the pads with IPA , the second failure mode is a bit
more severe and not as easy to fix , the cam that actuates the plungers actually tends to warp and/or wear over time as a result the contacts no longer make good contact and thats it , finally the 3rd failure mode is fatigue of the contact leaves which usually
requires replacing the contacts !
Before you take anything apart do a little check , take the attenuator set it to 0dB and measure the DC resistance between the 2 SMA center pins , it should be a really low value less than 1ohm , ?if this checks out attach a 50ohm load on one SMA connector
and measure the DC resistance between center and ground on the other SMA , step through the different attenuator settings ( technically you only need to do 10 20 and 40dB ) you should measure 50ohm for all settings, if you dont get a 50ohm reading for one
or multiple settings than you either have a bad pad or a dirty contact, if it checked ok than reverse the load and multimeter to the other connector and try again!
Dirty contacts usually act as a series cap which means DC will not pass , if you have a VNA you can also measure it and you will see a highpass type response?
toggle quoted message
Show quoted text
On Mar 16, 2022, at 23:31, Bob Stewart via groups.io <bob@...> wrote:
?
Alan,
You actually need to get into the other side of the assembly.? So, put the cover and end plate back on, but leave the screws a bit loose on the end plate.? Then remove the nuts from the two SMA connectors.? The aluminum model
plate should come off.? You may have to tap it against your hand.? Next mark the piece under the plate you removed with a magic marker to remind you which end is which.? Then remove the 10 Allen head screws while making sure the casting doesn't just fall off.?
Next *carefully* pull this assembly off as the three attenuator pads are attached to it.? There are a pair of thin plates that hold the pads on.? I wouldn't remove the pads except as a last resort.? Look things over very carefully under the scope and see if
you can see any reason for a problem.? Gentle is definitely the watchword!? It's safe to turn the knob, and you can see how the BeCu tabs move to short across each pad.? It goes without saying not to leave a fingerprint on the pads or BeCu tabs.
On Wednesday, March 16, 2022, 7:20:48 PM CDT, Alan Bain <alan.bain@...> wrote:
Thanks! I hadn't figured out how to dismantle the attenuator beyond the shaft with the cams and the little plungers. Will try further; I have stereo mircroscope, golf leaf but will have to find a smaller than usual burnisher!
Alan
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Dr. David Kirkby, Kirkby Microwave Ltd
maurit
Rik Bos