Decline, was Re: [HP-Agilent-Keysight-equipment] new File called App notes
On 4/19/20 7:38 PM, Bob Albert via groups.io wrote: I must say that I saw a pattern in my professional life.? Everywhere I
went, including the military, I was told that things were really nice a
while back, and I should have been there then.? Perhaps nostalgia isn't
what it used to be. This didn't just happen at random. This, along with another major problem, software bloat, can be traced to just about the same time and the same type of attitude. Sometime in the 1970s, I think it was, some clueless economics professor in some ivory tower said something to the effect of "the sole purpose of any corporation is to make money by any means possible," all other considerations be damned. Suits all over the world took this as if they'd just been released from some sort of prison (where many of them arguably belong) and they went absolutely wild. It was then that the decline of these corporations, and the rise of extreme levels of sleaze at the executive level, began. Enron, Worldcom, etc. Crime no longer need take place in dark alleys and crack houses, it moved to the comfort of the boardroom! We all get screwed daily by the result of this. Also sometime in the 1970s, another moron, probably related to the one described above, said "programmer time is more valuable than processor time". This similarly caused the laziest programmers to act as if they'd be unchained, and the decline of computing efficiency, and caring about same, began. This is why modern OSs require multi-GHz clock speeds and billions of bytes of memory just to boot, much less get any work done. If I ever get my hands around the neck of either of these men, they will have a difficult day. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Agilent 8753es Option 11 and TDR Measurements...
John,
That's become a way of life in the Los Angeles area with the TV re-pack going on and a lot of FM antennas having to be relocated and re-tuned - even in the daytime hours.? :)
Burt, K6OQK
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Re: new File called App notes
First, it was William Hewlett, a fine engineer who was affiliated with Terman, who helped him design the 200 oscillator.
I must say that I saw a pattern in my professional life.? Everywhere I went, including the military, I was told that things were really nice a while back, and I should have been there then.? Perhaps nostalgia isn't what it used to be.
Bob K6DDX
On Sunday, April 19, 2020, 04:32:13 PM PDT, Andy ZL3AG via groups.io <zl3ag@...> wrote:
On 20/04/20 11:25 am, Richard Knoppow wrote:
>? ?? I worked for -hp- a million years ago. While whatever expertise I had is probably completely obsolete it remains the best company I ever worked for.
"HP, as it was then, remains the best company I ever worked for"
FIFY, in case someone glances over that sentence and thinks HP2020 is anything like the fabulous company it was 40+ years ago.
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Re: new File called App notes
On 20/04/20 11:25 am, Richard Knoppow wrote: ?? I worked for -hp- a million years ago. While whatever expertise I had is probably completely obsolete it remains the best company I ever worked for. "HP, as it was then, remains the best company I ever worked for" FIFY, in case someone glances over that sentence and thinks HP2020 is anything like the fabulous company it was 40+ years ago.
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Re: new File called App notes
True. They don't make 'em like they used to. I've worked for quite a few companies that were much greater places to work in bygone days...
Jim Ford
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------ Original Message ------ From: "Richard Knoppow" <dickburk@...> To: [email protected]Sent: 4/19/2020 4:25:28 PM Subject: Re: [HP-Agilent-Keysight-equipment] new File called App notes Thanks Paul, I was afraid I was teaching my grandmother to suck eggs. Its not from being a newby so much as being an oldby. I grew up on -hp- Ap Notes and Bench Briefs (which are not underwear for the shop).
I worked for -hp- a million years ago. While whatever expertise I had is probably completely obsolete it remains the best company I ever worked for.
On 4/19/2020 1:16 AM, Paul Bicknell wrote:
RE: [HP-Agilent-Keysight-equipment] new File called App notes
Hi Richard
Thank you for your input butIthink theDave'swerehaving a laugh at myexpenseasIhade reducedApplicationnotes to a shortenedversion
Regarding being lost in time its meaning has changed to mean smallexecutableprogrammesas used on smartcell phones
Perhapsthe(apps on phones)executableprogrammesshould have been called EP¡¯snowIthink that would have confused thenewbie¡¯s
BestRegards Paul
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: 19 April 2020 05:14
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] new File called App notes
App notes mean Application notes. Publications that explained
how to use instruments. They varied from a single sheet to
practically a book. -hp- had some very good app notes on spectrum
analysis and impedance mesurement. General Radio also published
ap notes on various techniques such as sound measurement. These
publications were often ahead of any text book.
I don't mean to take this away from Dave but its an example
to me of how once perfectly obvious meanings have been lost with
time.
On 4/18/2020 1:56 PM, ArtekManuals wrote:
Paul I am not sure what you mean by an app note ..please give an example. In my world an App is just another word ( millennial speak) for a "program". A lot like Hz replaced Cycle. Since 95% of those on this list are old enough to remember cycles do you want us to load equipment related programs uyo your App folder? Dave PS: I sent you another private email earlier today to which you didn't respond ? On 4/18/2020 4:35 PM, Paul Bicknell wrote: new File called App notes
Hi all
Recently I have beenlookingat app notes for equipment
andrealisedwe do not have acollectionon the site
SoIn the File section I have made a File called *App notes*
CouldIask you all to helpwithputtingany App notes you have in
PDF format into the new file
Best Regards Paul
--
Richard Knoppow
dickburk@...
WB6KBL
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.
-- Richard Knoppow
dickburk@...
WB6KBL
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Re: new File called App notes
Thanks Paul, I was afraid I was teaching my grandmother to suck eggs. Its not from being a newby so much as being an oldby. I grew up on -hp- Ap Notes and Bench Briefs (which are not underwear for the shop).
?? I worked for -hp- a million years ago. While whatever expertise I had is probably completely obsolete it remains the best company I ever worked for.
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On 4/19/2020 1:16 AM, Paul Bicknell wrote: RE: [HP-Agilent-Keysight-equipment] new File called App notes
Hi Richard
Thank you for your input butIthink theDave'swerehaving a laugh at myexpenseasIhade reducedApplicationnotes to a shortenedversion
Regarding being lost in time its meaning has changed to mean smallexecutableprogrammesas used on smartcell phones
Perhapsthe(apps on phones)executableprogrammesshould have been called EP¡¯snowIthink that would have confused thenewbie¡¯s
BestRegards Paul
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow
Sent: 19 April 2020 05:14
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] new File called App notes
App notes mean Application notes. Publications that explained
how to use instruments. They varied from a single sheet to
practically a book. -hp- had some very good app notes on spectrum
analysis and impedance mesurement. General Radio also published
ap notes on various techniques such as sound measurement. These
publications were often ahead of any text book.
I don't mean to take this away from Dave but its an example
to me of how once perfectly obvious meanings have been lost with
time.
On 4/18/2020 1:56 PM, ArtekManuals wrote:
Paul I am not sure what you mean by an app note ..please give an example. In my world an App is just another word ( millennial speak) for a "program". A lot like Hz replaced Cycle. Since 95% of those on this list are old enough to remember cycles do you want us to load equipment related programs uyo your App folder? Dave PS: I sent you another private email earlier today to which you didn't respond ? On 4/18/2020 4:35 PM, Paul Bicknell wrote: new File called App notes
Hi all
Recently I have beenlookingat app notes for equipment
andrealisedwe do not have acollectionon the site
SoIn the File section I have made a File? called *App notes*
CouldIask you all to helpwithputtingany App notes you have in
PDF format? into the new file
Best Regards Paul
--
Richard Knoppow
dickburk@...
WB6KBL
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.8048 / Virus Database: 4793/15886 - Release Date: 08/14/18
Internal Virus Database is out of date.
--
Richard Knoppow
dickburk@...
WB6KBL
|
Re: new File called App notes
Sad but true. :(? The HP name went with the computers, printers, servers, etc back in 1999, and Walter Hewlett fought it, but money talks.? Then the Agilent name (no great loss there; a former coworker who had worked there called it Agilen't!) went with the non-test-equipment part of the business in 2014.? Ironic that the group that started it all ends up getting marginalized time and again.? Almighty dollars and suits that can see only them once again.? Don't get me started about how HP Semiconductor became the abomination Avago Technologies, who swallowed up AT&T Microelectronics/Agere, LSI Logic, Broadcom (while I was there), and God knows what else.? God help us!? Bright side is, He will!
Jim Ford?
Sent from my Verizon, Samsung Galaxy smartphone
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-------- Original message -------- From: "Stuart Landau via groups.io" <stuartl73@...> Date: 4/19/20 3:05 PM (GMT-08:00) Subject: Re: [HP-Agilent-Keysight-equipment] new File called App notes
I suspect that most at Keysight have little or no idea of the legacy that came before them as Hewlett Packard and Agilent. They most likely couldn't care less. Stuart K6YAZ Los Angeles, USA
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Re: new File called App notes
On 4/19/20 6:00 PM, Stuart Landau via groups.io wrote: Well written application notes are some of the best educational tools
available; whether they are instrument specific or more general.
?
I prize the General Radio, Boonton, Wiltron and Hewlett Packard app
notes. They have been a source of a great deal of my practical education. Hmm, I don't think I've ever seen any Wiltron app notes. Got any pointers? (or maybe a tar file?) -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: new File called App notes
On 4/19/20 6:05 PM, Stuart Landau via groups.io wrote: I suspect that most at Keysight have little or no idea of the legacy
that came before them as Hewlett Packard and Agilent. They most likely
couldn't care less. I'm sure they don't. It's often said, and I've seen this borne out in company after company, that management and marketing types generally don't even have to know what the product is. And the higher up in the management hierarchy they are, the more they focus on the bottom line...meaning literally the line at the bottom, the profit margin. Anything else is incidental, a low-level detail for "lesser" people, and can just as easily (and probably should be) just be farmed out to China. One thing that we've forgotten in this society is that execute management is positions are *overhead* positions. Any sane organization seeks to minimize overhead, but that's not the way we do things anymore. Is it really any wonder that it's all going to shit? -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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HP-3421A Service Manual is required.
There is one HP-3421A that does not turn on (+15, -15, + 5V is dead).
The measured value of C708 where oscillation is occurring inside the capacitor is 495(0.205).
C708(25V, 470uF) was replaced.
And when you turn on the power, +16.9V is measured in TP700, +7V in RT700, and +6.6V on top, regardless of S502(Switch).
However, +15V, -15V, and +5V cannot be measured.
I suspect the U702(LM393N, Dual Differential Comparator), but it is not easy to analyze because there is no circuit diagram.
If the ¡°Wakeup Logic¡± on the left side of the figure can be related to S502, the problem is complicated, so I need a schematic.
Please tell me where to buy the service manual schematic(pdf, jpg). ?
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Re: Jacks added to 6623A System PSU
On Sun, Apr 19, 2020 at 11:09 AM, Michael Dunn wrote:
Does anyone know a source for pre-made ones
Well... I haven't seen (doesn't mean they don't exist)... but, I haven't seen the ones stamped out of sheet steel lately, and hardly the ones stamped out of brass ever. But Pamona makes what they call "Stackable Shorting Double Banana Plug" with the banana plugs centered at 0.75 inch... that fit my HP 6111A, et. al. power supplies. Jameco, and others sell them. See. Best regards.
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E4418B modification information for the stand by battery
Hi all
Can anyone help me with the modification information
for the E4418B
to stop the stand by battery from draining
?
I know it exists as I had it a few months
ago / last year but unable to find in my HP manuals
Regards Paul ?
?
?
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Re: new File called App notes
I suspect that most at Keysight have little or no idea of the legacy that came before them as Hewlett Packard and Agilent. They most likely couldn't care less.
Stuart K6YAZ
Los Angeles, USA
|
Re: new File called App notes
Well written application notes are some of the best educational tools available; whether they are instrument specific or more general.
?
I prize the General Radio, Boonton, Wiltron and Hewlett Packard app notes. They have been a source of a great deal of my practical education.
Stuart K6YAZ
Los Angeles, USA
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Re: Agilent 8753es Option 11 and TDR Measurements...
Burt,
Good distance resolution on TDR usually requires wide bandwidth, so you might upset some folks with significant out of channel power on a live antenna.
--John
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On Sun, Apr 19, 2020 at 07:43 AM, Burt K6OQK wrote:
John,
Thanks for you guidance, It helps a lot.
To give you a little background in how I've been using my 8753es and some of the hardware I have... I use it mostly for broadcast antenna measurements and antenna tuning. In many cases doing this on antennas in a high RF environment.? In order to do that I feed the RF out into an ENI 310L RF amplifier, which gives me about 10 watts out.? That feeds a (50 MHz to 1000 MHz) NARDA 3020A dual directional coupler through a 10 dB 50 watt attenuator to keep the amplifier happy.? The forward sample of the NARDA feeds the R input through a 20 dB pad, although I suppose I could feed the R input using a splitter directly off the RF out; one branch feeding the R input and the other branch feeding the ENI input.? The reflected sample feeds the A receiver via a 20 dB pad, and considering the return coupling I have about 40 dB of attenuation between the reflected and the A input.? I calibrate the system to the far end of my test cable using a Short', Open, and known 10 watt load that's sufficient for this frequency range.? Before I had the 8753es I used a spectrum analyzer with a tracking generator with the above stuffs as a Scalar Analyzer.? This method has worked out quite well.?
What do I want to be able to do?? I also want to be able to look at/sweep transmission lines, and typically with an antenna on the other end that's in a high RF environment.? Hence the need for the RF amp and a passel of attenuators to safely override what's coming back down the antennas from other stuffs - more of a "High Power" FDR system rather than TDR.? I have a Tek 1503C that I have used, but that requires disconnecting the transmission line at the top end, but that doesn't always show me what I'm looking for.?
Does my description make any sense to you?
Again, your guidance is sincerely appreciated.
Burt, K6OQK
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Re: new File called App notes
On 4/19/20 4:09 PM, Bill Perkins wrote: ????TRYING to d'load:
????App Note 123 - Floating Measurements and Guarding
from here:
????
I get the attached screen shot ?
????Furthering Keysight's endless teases these days one can pull down
from that same page the attached spreadsheet, promising much more info
but w/o a single working link.
????Do they have a bunch 20-somethings chugging Red Bull doing this
stuff anymore ? I expect it's more legions of dramatically underpaid (but willing) people in India. File sent off-list. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: new File called App notes
TRYING to d'load:
App Note 123 - Floating Measurements and Guarding
from here:
I get the attached screen shot ?
Furthering Keysight's endless teases these days one can pull down from that same page the attached spreadsheet, promising much more info but w/o a single working link.
Do they have a bunch 20-somethings chugging Red Bull doing this stuff anymore ?
Bill @ PEARL, Inc.
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Re: new File called App notes
Hi Bill thank you
It appears there are possibly 3 sites with application notes on just
requires the contents of each site for a listing off the application notes
it has
Then perhaps we can fill in the missing ones to each site
So I assume we can use your list to help fill in any missing ones for the
benefit of all Yes, go right ahead; and use anything else you'll find in that directory if you go up a level or two. I've made the server's file structure accessible exactly so that people can dig around as I have so. much. stuff I'll spend the rest of my days putting html in front of it all. TO THE LIST ADMIN: How do I change my subscription e-mail address ? Hit me off list if pls. Regards Paul Best, Bill @ PEARL, Inc.
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Re: VXI documentation, was Re: [HP-Agilent-Keysight-equipment] new File called App notes
On 4/19/20 2:58 PM, Don Bitters via groups.io wrote: Parts of the Agilent Technologies VXI business was sold to VXI
Technologies, just prior to the Agilent - Keysight split sometime? after
2003, so there may be info on their site about the Agilent VXI items.? I
believe Keysight kept everything that pertained to RF, Microwave, Power
measurement, DMM, O-scope technologies.? I think that most of the Some did, but not all. Many VXI modules are still currently sold by Keysight, including Slot 0 controllers, relay muxes, etc. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: VXI documentation, was Re: [HP-Agilent-Keysight-equipment] new File called App notes
Parts of the Agilent Technologies VXI business was sold to VXI Technologies, just prior to the Agilent - Keysight split sometime? after 2003, so there may be info on their site about the Agilent VXI items.? I believe Keysight kept everything that pertained to RF, Microwave, Power measurement, DMM, O-scope technologies.? I think that most of the switching matrix items went with VXI Technologies.
Don Bitters
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Dave McGuire
Burt K6OQK
Paul Bicknell
Liam Perkins
