Date   

Re: Advice about buying a 7904

 

Hi Sean,
The revised March 1988 7104 Operators Manual says the display of the 7D01 Hardware Logic Analyzer and the 7D02 Software Logic Analyzer can cause permanent reduction in CRT microchannel plate gain; consequently, a permanent reduction in writing rate. For more information refer to "Reduction of Display Gain with Display Output Change" in the 7104 Service Manual.

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of sdturne@q.com
Sent: Friday, May 29, 2020 10:09 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] Advice about buying a 7904

Reg,

To add to Harvey's excellent response, yes indeed most (all?) 7k plugins will work in any 7k mainframe. HOWEVER, there are at least a couple plugins (I cannot recall which ones right now, perhaps someone else knows off the top of their head) that explicitly must never be used in a 7104 because the way they drive the crt can cause damage to it. You absolutely could simply use the plugins you have for your 7104 in a 7904(A).

Sean

On Fri, May 29, 2020 at 05:53 PM, Reginald Beardsley wrote:


Please forgive me my ignorance, but for most of my life these things
were pure unobtainium for budgetary reasons. And as I was not an EE
and not allowed to touch the ones at work, there was no incentive to
torture myself by looking at catalogs of things I could not afford. Getting a 465 was a huge event for me.
And I don't mean all the work it took to repair it. I am acutely aware
of how fiddly adjusting the vertical amplifiers is. But when you get it right, wow!
Though in all honesty, I like my Dumont 1062 better as it does not have a fan.
It's only 60 MHz, but otherwise matches the 465 in features.

Can I use my 7104 plugins in a 7904 mainframe, albeit with reduced BW
and sweep speeds? That would greatly ease my concerns about using the
7104 on a regular basis. And make getting a 7904 mainframe pretty much a no-brainer.
Just a question of getting a good deal.

Is there a matrix which shows which plugins will work in which
mainframes? I'm really only interested in the vertical and horizontal
plugins. For the other stuff I have HP gear. I'm not aware of anything
Tek made that can compete with an 8566B or 8510C.

Thanks,
Reg




--
Dennis Tillman W7pF
TekScopes Moderator


Re: In Defense of the 7A19

Michael W. Lynch
 

Dennis,

I should also say that I have great respect for HP. No intention to insinuate that HP products were not good or not many times better than those of Tektronix. As you said, they make a huge range of excellent instruments. HP spectrum analyzers, frequency counters and test meters are superb. Your point that Tektronix has a much more narrow focus is spot on. This may have been one of the things that dragged TEK down in later years as they attempted to compete with HP and their wide range of products, instead of focusing on their strength, which was oscilloscopes, similar types of instruments (curve tracers) and graphic display terminals. I need to sit down and look at some of the points that you raised, this discussion has provided a larger window into this subject.

Michael Lynch

From My I-Phone

@mlynch002

479-477-1115

On May 31, 2020, at 11:23 AM, Dennis Tillman W7pF <@Dennis_Tillman_W7pF> wrote:

Hi Michael,
Your insights about the sales game explains a great deal about the motivation within the marketing department that produced this ad.
I think the marketing team that created it deserve an award for this ad for several reasons:
* The written copy in the ad follows all of the well understood advertising principles by describing the features and benefits of their scopes that should be at the top of your mind when you purchase your next scope.
* The ad never mentions the competition - there is only one company you should consider for your next scope and that is HP.
* What they deserve an award for is the picture of the contraption with bells and whistles. Nobody would have stopped to read the copy in this ad if it wasn't for the picture. When the typical engineer turned the page and saw that thing he probably would have laughed and read the ad to see what it was about.
* Another reason to reward the team that produced the ad is something else they did that is so subtle 99% of the people that saw the ad had no idea the headline and the picture were also intended as an insult to another company - Tektronix. Tek's success is due to their engineering excellence. Stable triggering is critically important for any scope. HP triggering was far superior to Tek's triggering. On-screen readout wasn't any good if you couldn't trigger at the right point on a signal. The hidden message in the ad, aimed squarely at Tek, was we have brilliant engineers and here is proof that we can design a better scope at a lower price than you can.

HP was famous for its very broad line of instruments that all had excellent specifications. Oscilloscopes are another instrument HP would also like to be known for. Unlike HP, Tek had a very narrow line of instruments and all of them were scopes of one kind or another. If HP could build a better scope at a lower price than Tek they were a very real threat. Even worse, HPs laboratory scope outdid the newest and broadest laboratory scope product line that the best minds at Tek could conceive. This was a huge accomplishment for HP. Companies spend a lot of money annually for oscilloscopes and HP was now a serious contender for Tek's most lucrative product line - their laboratory scopes The headline and photo in the ad was intended to send a message specifically to the management at Tek that HP intended to compete against them with a provably better scope at a lower price that Tek's newest and best lab scopes.

Dennis Tillman W7pF


-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Michael W. Lynch via groups.io
Sent: Saturday, May 30, 2020 8:57 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] In Defense of the 7A19

On Sat, May 30, 2020 at 01:18 AM, tek_547 wrote:


It didn't mention Tek but it mocked the new features of the 7K scopes
as irrelevant "bells and whistles". One of those bells and whistles
was Barrie Gilbert's revolutionary on-screen readout.
All:

I may not be a Electronics Genius, but I do know the "sales game". HP mocked TEK's "bells and whistles" because those were the most visible and attractive features, the ones that the engineering community (plus others) wanted and usually needed.. Competitive company's "Marketing Departments" almost always mock features that they really have no answer for, deflect and distract is the plan. Sales and Marketing are 90% BS and 10% knowledge.

It would appear to me that TEK established the on screen readout first, probably because it was the most difficult to implement as it was "new technology". Bells and whistles sell products, generally much quicker than "technical specs". You can always "fix" bandwidth, triggers and all that other stuff. TEK laid the cornerstone for the 7K series and built from there, they were playing the "long" game; however they certainly knew they were behind at the time. HP had a technically superior product, but only for that instant in time. After that, as Dennis stated, HP played catch up or just stopped playing.

For me personally, the HP scopes are just not attractive in their esthetics. No offense to those who like them, just my personal preference and opinion. I find that the earlier TEK scopes almost always had a more intuitive layout on their scopes and a more attractive panel design. In the categories of Esthetics and ergonomics, the devil is definitely in the details, TEK got it right most of the time. Either brand of scope is likely much more capable of performing than my poor old brain is in understanding.

Great piece of information and history from Dennis, Thanks Again
--
Michael Lynch
Dardanelle, Arkansas





--
Dennis Tillman W7pF
TekScopes Moderator


--
Michael Lynch
Dardanelle, Arkansas


Re: Tektronix Application Notes

 

Hi Neil,
It would be nice to see all of them organized in one place. Unfortunately there are logistic problems that make this very difficult.
As far as I know Tek rarely published application notes in the 1960s. Instead they published an extensive series of easy to read Concept Books which described all aspects of oscilloscopes in detail. Tek also separately published user oriented tutorials on oscilloscopes such as "The ABCs of Probes", and "The XYZs of Oscilloscopes". Many articles in TekScopes, which they published quarterly at first and then 6 times per year, were the equivalent of application notes.
That changed around 1970 when application notes were recognized as an important way to create demand for some of the more unusual or under-appreciated products. At that time Tek was constantly producing new and unusual products to respond to rapid changes in electronics. These new products could often be combined with other products to provide additional new capabilities. But those combinations were not always obvious. An app-note that showed how they worked together could be the answer to making a measurement that would be difficult or impossible up to then. In many cases the app-notes came from the same engineers that designed the products. So the app-notes appeared whenever you could coax an engineer to write about new capabilities that are possible with their product.
It seems like there was little appreciation by management of the app-notes and how important they were. Without some centralized management each product group published their own app-notes whenever they got around to it. This also meant it was hard to know what application notes there were.
By the 1980s someone must have recognized the importance of the app-notes and a group was formed to manage them. I believe one result of this was, on rare occasions, a list of app-notes might appear in an annual catalog when space permitted. For example there is an entry for Application Notes in the Functional Index on pg. 12 of the 1983 catalog. It says the portables app-notes are on pg. 311; the 7000 series app-notes are on pg. 236; and the 5000 series app-notes are on pg. 292 (they were actually on pg. 293). Unfortunately there was no mention of app-notes for the TTM5xx series. In another catalog I have a tear-out pre-paid Business Reply card with boxes you can check off for each application note you want.

It will not be easy to assemble all of the things that really are application notes that were published by various groups within Tek for numerous other purposes..

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of nj902
Sent: Friday, May 29, 2020 11:23 AM
To: TekScopes@groups.io
Subject: [TekScopes] Tektronix Application Notes

The Tek web site has a lot of newer material available but it's hard to find application notes from the classic era - which I define as roughly up to the marketing alliance with R&S and Advantest.

Up to that point, Tek made some of the most awesome spectrum analyzers available - it was sad to see the product line discontinued.

I remember a discussion about application notes on this list many years ago. At that time Stan Griffiths said he was still trying to secure permission from Tektronix to publish them.

I never saw a followup but I do see a few application notes on TekWiki so perhaps it would be OK now to create a collection of these before they are lost to time.

What I think would be great would be an itemized list by product lines: 5000, 7000, 11000, spectrum analyzers etc.





--
Dennis Tillman W7pF
TekScopes Moderator


Re: Nice Document Site with Tek manuals; New to me

Roy Thistle
 

On Sat, May 30, 2020 at 10:14 PM, tgerbic wrote:


I visited the opweb.de site in the past and they had a different link icon and
page when I originally saved the link.
Hi Tony, Dennis, .et al.:
Yes... I think I remember that... seeing the old site... and I've run across this newer? site many times... as a result of a DuckDuckGo search... but, I never trusted it because of the garish webpage layout... that IMO...is usually associated with a crude website exploit.
There is a ton of exploit sites that always turn up when searching for manuals/pdfs.
Best regards and wishes.
Roy


Re: In Defense of the 7A19

 

Well Hello Magnus!
You have been very quiet for a long time.
It is nice to hear from you.
I hope all is well.
Dennis

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of magnustoelle via groups.io
Sent: Saturday, May 30, 2020 12:28 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] In Defense of the 7A19

Good Day,
thank you for this great write-up and insights! , Dennus!The key take-aways from this are still absolutely relevant today.Think of the ongoing overkill of announcements of useless or irrelevant features in the Smartphone industry today or 8k-resolution TVs with a screen size simply too big for the average EU house... And then a competitor comes up with an online store that simply works. Cheers, Magnus


On Sat, May 30, 2020 at 01:18 AM, tek_547 wrote:


It didn't mention Tek but it mocked the new features
of the 7K scopes as irrelevant "bells and whistles". One of those bells and
whistles was Barrie Gilbert's revolutionary on-screen readout.
All:

I may not be a Electronics Genius, but I do know the "sales game". HP mocked TEK's "bells and whistles" because those were the most visible and attractive features, the ones that the engineering community (plus others) wanted and usually needed.. Competitive company's "Marketing Departments" almost always mock features that they really have no answer for, deflect and distract is the plan. Sales and Marketing are 90% BS and 10% knowledge.

It would appear to me that TEK established the on screen readout first, probably because it was the most difficult to implement as it was "new technology". Bells and whistles sell products, generally much quicker than "technical specs". You can always "fix" bandwidth, triggers and all that other stuff. TEK laid the cornerstone for the 7K series and built from there, they were playing the "long" game; however they certainly knew they were behind at the time. HP had a technically superior product, but only for that instant in time. After that, as Dennis stated, HP played catch up or just stopped playing.

For me personally, the HP scopes are just not attractive in their esthetics. No offense to those who like them, just my personal preference and opinion. I find that the earlier TEK scopes almost always had a more intuitive layout on their scopes and a more attractive panel design. In the categories of Esthetics and ergonomics, the devil is definitely in the details, TEK got it right most of the time. Either brand of scope is likely much more capable of performing than my poor old brain is in understanding.

Great piece of information and history from Dennis, Thanks Again
--
Michael Lynch
Dardanelle, Arkansas










--
Dennis Tillman W7pF
TekScopes Moderator


Re: Nice Document Site with Tek manuals; New to me

Paul Amaranth
 

I got tired up cutting and pasting schematics and picked up a inkjet
plotter/printer off of craigslist for $50. Now I can print things up
to 36 inches wide. It really helps sometimes to blow things up a bit
and tack them on the wall. Like everything I buy it did need a little
work, but not all that much.

You can use panorama software to stitch schematics back together, but
it's something of a pain.

I much prefer single scan schematics, they're much easier to manipulate.

Paul

On Sat, May 30, 2020 at 06:34:55PM -0700, tgerbic wrote:

Interesting comment on full-sheet scans. I will often do full sheet if it will fit on my scanner (scans up to 11.7 x 16.5), or will do overlaping 16.5 scans if over that. Most people cannot print these out and they are a bit small on most monitors so I have gotten feedback to break these up.

I provided the 410C alternative 1 and 2 manuals on the hparchive which are very clear but I did break up the schematics to make them large and legible. Are they unusable like that?

/Tony






!DSPAM:5ed309c8170021267330973!
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


Re: In Defense of the 7A19

 

Hi Michael,
Your insights about the sales game explains a great deal about the motivation within the marketing department that produced this ad.
I think the marketing team that created it deserve an award for this ad for several reasons:
* The written copy in the ad follows all of the well understood advertising principles by describing the features and benefits of their scopes that should be at the top of your mind when you purchase your next scope.
* The ad never mentions the competition - there is only one company you should consider for your next scope and that is HP.
* What they deserve an award for is the picture of the contraption with bells and whistles. Nobody would have stopped to read the copy in this ad if it wasn't for the picture. When the typical engineer turned the page and saw that thing he probably would have laughed and read the ad to see what it was about.
* Another reason to reward the team that produced the ad is something else they did that is so subtle 99% of the people that saw the ad had no idea the headline and the picture were also intended as an insult to another company - Tektronix. Tek's success is due to their engineering excellence. Stable triggering is critically important for any scope. HP triggering was far superior to Tek's triggering. On-screen readout wasn't any good if you couldn't trigger at the right point on a signal. The hidden message in the ad, aimed squarely at Tek, was we have brilliant engineers and here is proof that we can design a better scope at a lower price than you can.

HP was famous for its very broad line of instruments that all had excellent specifications. Oscilloscopes are another instrument HP would also like to be known for. Unlike HP, Tek had a very narrow line of instruments and all of them were scopes of one kind or another. If HP could build a better scope at a lower price than Tek they were a very real threat. Even worse, HPs laboratory scope outdid the newest and broadest laboratory scope product line that the best minds at Tek could conceive. This was a huge accomplishment for HP. Companies spend a lot of money annually for oscilloscopes and HP was now a serious contender for Tek's most lucrative product line - their laboratory scopes The headline and photo in the ad was intended to send a message specifically to the management at Tek that HP intended to compete against them with a provably better scope at a lower price that Tek's newest and best lab scopes.

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Michael W. Lynch via groups.io
Sent: Saturday, May 30, 2020 8:57 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] In Defense of the 7A19

On Sat, May 30, 2020 at 01:18 AM, tek_547 wrote:


It didn't mention Tek but it mocked the new features of the 7K scopes
as irrelevant "bells and whistles". One of those bells and whistles
was Barrie Gilbert's revolutionary on-screen readout.
All:

I may not be a Electronics Genius, but I do know the "sales game". HP mocked TEK's "bells and whistles" because those were the most visible and attractive features, the ones that the engineering community (plus others) wanted and usually needed.. Competitive company's "Marketing Departments" almost always mock features that they really have no answer for, deflect and distract is the plan. Sales and Marketing are 90% BS and 10% knowledge.

It would appear to me that TEK established the on screen readout first, probably because it was the most difficult to implement as it was "new technology". Bells and whistles sell products, generally much quicker than "technical specs". You can always "fix" bandwidth, triggers and all that other stuff. TEK laid the cornerstone for the 7K series and built from there, they were playing the "long" game; however they certainly knew they were behind at the time. HP had a technically superior product, but only for that instant in time. After that, as Dennis stated, HP played catch up or just stopped playing.

For me personally, the HP scopes are just not attractive in their esthetics. No offense to those who like them, just my personal preference and opinion. I find that the earlier TEK scopes almost always had a more intuitive layout on their scopes and a more attractive panel design. In the categories of Esthetics and ergonomics, the devil is definitely in the details, TEK got it right most of the time. Either brand of scope is likely much more capable of performing than my poor old brain is in understanding.

Great piece of information and history from Dennis, Thanks Again
--
Michael Lynch
Dardanelle, Arkansas





--
Dennis Tillman W7pF
TekScopes Moderator


Re: Nice Document Site with Tek manuals; New to me

tgerbic
 

Dennis,
I checked my links and see I visited the opweb.de site in the past and they had a different link icon and page when I originally saved the link. Guess that site has been around for at least a decade.

John,
I do the same thing with wide pages. I have an HP printer that can print out to probably 54 inches in length but I am just too lazy (cheap) to buy long paper. I tape them up too. This has made me learn to scan wide schematics with the save area preselected and just move the paper. When I print out 11X17 sheets, they can just be taped together in a convenient spot. However, I do tend to take the board layouts and charts and enlarge them to be sure they are really clear, and image edit the photos and waveform photos to make the contrast so you can read them clearly.

Berry,
The HP scans were intended to put on the HP Archive site but in the end they were intended to be high quality scans, with OCR, to be used by people like us fixing old test equipment. So I guess they are in a good spot. This is true for any scans besides HP as well.

I scan what I have and post in various places but there is still a lot of equipment out there with poor scans or no scans to be found. You should check out Artek Manuals if you can't find what you want on line. I have bought a few from the site and the prices are reasonable. Think about spending a week or month looking for a clean PDF verses spending about $8 to $12 to just get the manual and get back to troubleshooting.


Re: Nice Document Site with Tek manuals; New to me

John Ferguson
 

Stupid me.

I print them out and tape them together.  Sometimes this doesn't work too well because the scans are not all the same scale.  The print routine for our hp-Envy has a scaling function, which can save the day eventually when confronted with schematics are broken up where there are 30 runs which cross the joint between two scans which weren't done to same scale.


TLA711 Benchtop controller schematic needed

Jim Ford
 

Hi, everybody.

I'm looking for a schematic for the Benchtop Controller module that goes in the TLA711 logic analyzer mainframe. The Benchtop Controller says "039-0039-03" on it, and I have the service manual for it, 070-9778-03, but it doesn't contain schematics for the boards. opweb.de didn't have it, nor did BAMA. Anybody have one of these? I'd pay for one; <$100, else I'll just get a TLA704 on ePray.

Thanks.

Jim Ford
Laguna Hills, California
U.S.A.

------ Original Message ------
From: "Dennis Tillman W7pF" <@Dennis_Tillman_W7pF>
To: TekScopes@groups.io
Sent: 5/30/2020 5:03:19 PM
Subject: [TekScopes] Nice Document Site with Tek manuals; New to me

I just discovered a new (to me) source for documentation and I am scratching
my head wondering why it took me so long to stumble across it since he says
his archive has been available since 2007 and it contains over
11,000manuals.
At first glance it appears to have as much as The Boat Anchor Archive.
I haven't had a chance to explore what it offers us but there are 637
documents / manuals / etc listed for Tektronix.
It has a very nice, clean web interface.

The Tek documents start at
https://www.opweb.de/english/company/Tektronix

The home page is at
https://www.opweb.de/english/home

The owner is:
Oliver Poggensee
Zeppelinplatz 1
25335 Elmshorn
Germany

This is what Oliver says on the site's home page:
I am happy to welcome you on my site. This download archive has been
available since 2007. Starting with a few hundred manuals, there are now
well over 11,000, and new ones are added every month. I have designed these
pages to help all people who own and use old electronic devices. So that
they can be maintained, serviced and repaired more easily, quickly and
professionally. No matter if it is a radio, a television or a measuring
device. The main focus of these pages is on older devices, but you can also
find some technical documentation for newer devices here. With my own search
for good download possibilities I often found fake pages, where you can't
download the manual you are looking for, or dubious dealers selling the
manuals that are actually freely available, I want to counter this with my
site. I hope that you will use this offer actively and that it is useful for
you. All manuals here are completely free and can be downloaded directly
without any restrictions.

Do you have any manuals or images of your device, please upload it here and
share it with others .

I have taken the effort to collect all information available about the
respective manuals. There is for example a preview of the first page, the
page number, date of publication and many other information.

I don't want to compete with professional schematic services, most manuals
are of medium to low quality, not comparable to the high resolution scans of
professional service providers. All manuals have been provided by users from
various sources. I have attempted not to publish material from professional
service providers here, but if there is material from a professional service
here, I will delete it as soon as possible. For this purpose a short message
is sufficient.

Dennis Tillman W7pF



7854 ROM replacement issues

Martin Whybrow
 

My 7584 is suffering with ROM failure, so I decided to buy some 2364 to 2764 adapter boards and fit 2764s instead; however, the adapter boards are too long and overlap the adjacent ROM sockets. Given that this seems to be a popular mod, how have people managed to fit 2764s on adapter boards?


Re: Nice Document Site with Tek manuals; New to me

n4buq
 

Hi Tony,

The multipage scans are not exactly unuseful, but there is one for the 410C that is rather difficult to follow due to the number of lines that cross from one sheet to the next and seeing that on in a single sheet was rather nice.

I was referring mostly to the sheets where there's a schematic, a drawing of the board, and perhaps a table that are rather a bit more convenient on the same page. You're correct, though, in that most folks don't have a home printer capable of much more than an 8.5" x 11" size so even if there are full size scans, it's pretty much necessary to view them on the computer as opposed to printing them out.

I sure hope the work you did scanning manuals hasn't been used for some other purpose than it was intended.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "tgerbic" <tgerbic@...>
To: TekScopes@groups.io
Sent: Saturday, May 30, 2020 8:34:55 PM
Subject: Re: [TekScopes] Nice Document Site with Tek manuals; New to me

I am not sure if I am happy or disappointed about this site. I did a spot
check on the HP manuals ( I have a comprehensive list of over 100 I scanned
and uploaded) and found that every one I checked are scans I did for the
hparchive.com. The differences are that they have the acknowledgements
removed, some front/back covers removed, and in some cases a little cosmetic
work. Some have the color in the text removed. A good example is the HP
1704B Service or the 130B/BR.
I guess the upside is that the scans are being used, so they have some value.

I have been scouring the web for 20 years looking for Tek, HP, Heathkit, and
many other manuals and I cannot remember seeing this exact site with this
navigation/color. It looks a bit like another that had similar content. It
might have been there with a different web layout. Have to look back at my
saved links.

Interesting comment on full-sheet scans. I will often do full sheet if it
will fit on my scanner (scans up to 11.7 x 16.5), or will do overlaping 16.5
scans if over that. Most people cannot print these out and they are a bit
small on most monitors so I have gotten feedback to break these up.

I provided the 410C alternative 1 and 2 manuals on the hparchive which are
very clear but I did break up the schematics to make them large and legible.
Are they unusable like that?

/Tony





Re: Nice Document Site with Tek manuals; New to me

tgerbic
 

I am not sure if I am happy or disappointed about this site. I did a spot check on the HP manuals ( I have a comprehensive list of over 100 I scanned and uploaded) and found that every one I checked are scans I did for the hparchive.com. The differences are that they have the acknowledgements removed, some front/back covers removed, and in some cases a little cosmetic work. Some have the color in the text removed. A good example is the HP 1704B Service or the 130B/BR.
I guess the upside is that the scans are being used, so they have some value.

I have been scouring the web for 20 years looking for Tek, HP, Heathkit, and many other manuals and I cannot remember seeing this exact site with this navigation/color. It looks a bit like another that had similar content. It might have been there with a different web layout. Have to look back at my saved links.

Interesting comment on full-sheet scans. I will often do full sheet if it will fit on my scanner (scans up to 11.7 x 16.5), or will do overlaping 16.5 scans if over that. Most people cannot print these out and they are a bit small on most monitors so I have gotten feedback to break these up.

I provided the 410C alternative 1 and 2 manuals on the hparchive which are very clear but I did break up the schematics to make them large and legible. Are they unusable like that?

/Tony


Re: I missed some messages due to SPAM Filter Issues

EJP
 

Dennis

You can do this directly on the groups.io website without relying on email prompts. Just have a regular look at the Pending link you have on the left. Non-moderators don't see this.

EJP


Re: Nice Document Site with Tek manuals; New to me

n4buq
 

Nice! That's a really great site. First time I've seen a freebie for an HP 410C where the full schematics and parts layouts are on full-sheet scans.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Dennis Tillman W7pF" <@Dennis_Tillman_W7pF>
To: TekScopes@groups.io
Sent: Saturday, May 30, 2020 7:03:19 PM
Subject: [TekScopes] Nice Document Site with Tek manuals; New to me

I just discovered a new (to me) source for documentation and I am scratching
my head wondering why it took me so long to stumble across it since he says
his archive has been available since 2007 and it contains over
11,000manuals.
At first glance it appears to have as much as The Boat Anchor Archive.
I haven't had a chance to explore what it offers us but there are 637
documents / manuals / etc listed for Tektronix.
It has a very nice, clean web interface.

The Tek documents start at
https://www.opweb.de/english/company/Tektronix

The home page is at
https://www.opweb.de/english/home

The owner is:
Oliver Poggensee
Zeppelinplatz 1
25335 Elmshorn
Germany

This is what Oliver says on the site's home page:
I am happy to welcome you on my site. This download archive has been
available since 2007. Starting with a few hundred manuals, there are now
well over 11,000, and new ones are added every month. I have designed these
pages to help all people who own and use old electronic devices. So that
they can be maintained, serviced and repaired more easily, quickly and
professionally. No matter if it is a radio, a television or a measuring
device. The main focus of these pages is on older devices, but you can also
find some technical documentation for newer devices here. With my own search
for good download possibilities I often found fake pages, where you can't
download the manual you are looking for, or dubious dealers selling the
manuals that are actually freely available, I want to counter this with my
site. I hope that you will use this offer actively and that it is useful for
you. All manuals here are completely free and can be downloaded directly
without any restrictions.

Do you have any manuals or images of your device, please upload it here and
share it with others .

I have taken the effort to collect all information available about the
respective manuals. There is for example a preview of the first page, the
page number, date of publication and many other information.

I don't want to compete with professional schematic services, most manuals
are of medium to low quality, not comparable to the high resolution scans of
professional service providers. All manuals have been provided by users from
various sources. I have attempted not to publish material from professional
service providers here, but if there is material from a professional service
here, I will delete it as soon as possible. For this purpose a short message
is sufficient.

Dennis Tillman W7pF




Nice Document Site with Tek manuals; New to me

 

I just discovered a new (to me) source for documentation and I am scratching
my head wondering why it took me so long to stumble across it since he says
his archive has been available since 2007 and it contains over
11,000manuals.
At first glance it appears to have as much as The Boat Anchor Archive.
I haven't had a chance to explore what it offers us but there are 637
documents / manuals / etc listed for Tektronix.
It has a very nice, clean web interface.

The Tek documents start at
https://www.opweb.de/english/company/Tektronix

The home page is at
https://www.opweb.de/english/home

The owner is:
Oliver Poggensee
Zeppelinplatz 1
25335 Elmshorn
Germany

This is what Oliver says on the site's home page:
I am happy to welcome you on my site. This download archive has been
available since 2007. Starting with a few hundred manuals, there are now
well over 11,000, and new ones are added every month. I have designed these
pages to help all people who own and use old electronic devices. So that
they can be maintained, serviced and repaired more easily, quickly and
professionally. No matter if it is a radio, a television or a measuring
device. The main focus of these pages is on older devices, but you can also
find some technical documentation for newer devices here. With my own search
for good download possibilities I often found fake pages, where you can't
download the manual you are looking for, or dubious dealers selling the
manuals that are actually freely available, I want to counter this with my
site. I hope that you will use this offer actively and that it is useful for
you. All manuals here are completely free and can be downloaded directly
without any restrictions.

Do you have any manuals or images of your device, please upload it here and
share it with others .

I have taken the effort to collect all information available about the
respective manuals. There is for example a preview of the first page, the
page number, date of publication and many other information.

I don't want to compete with professional schematic services, most manuals
are of medium to low quality, not comparable to the high resolution scans of
professional service providers. All manuals have been provided by users from
various sources. I have attempted not to publish material from professional
service providers here, but if there is material from a professional service
here, I will delete it as soon as possible. For this purpose a short message
is sufficient.

Dennis Tillman W7pF


Re: Advice about buying a 7904

@0culus
 


465B

mtnredhed <mtnredhed@...>
 

The scope has been spoken for.

Glad to see it find a good home.

jim


Re: In Defense of the 7A19

magnustoelle
 

Good Day,
thank you for this great write-up and insights! , Dennus!The key take-aways from this are still absolutely relevant today.Think of the ongoing overkill of announcements of useless or irrelevant features in the Smartphone industry today or 8k-resolution TVs with a screen size simply too big for the average EU house... And then a competitor comes up with an online store that simply works. 
Cheers,
Magnus 


On Sat, May 30, 2020 at 01:18 AM, tek_547 wrote:


It didn't mention Tek but it mocked the new features
of the 7K scopes as irrelevant "bells and whistles". One of those bells and
whistles was Barrie Gilbert's revolutionary on-screen readout.
All:

I may not be a Electronics Genius, but I do know the "sales game".  HP mocked TEK's "bells and whistles" because those were the most visible and attractive features, the ones that the engineering community (plus others) wanted and usually needed.. Competitive company's "Marketing Departments" almost always mock features that they really have no answer for, deflect and distract is the plan.  Sales and Marketing are 90% BS and 10% knowledge.

It would appear to me that TEK established the on screen readout first, probably because it was the most difficult to implement as it was "new technology".  Bells and whistles sell products, generally much quicker than "technical specs".    You can always "fix" bandwidth, triggers and all that other stuff.  TEK laid the cornerstone for the 7K series and built from there, they were playing the "long" game; however they certainly knew they were behind at the time.  HP had a technically superior product, but only for that instant in time.  After that, as Dennis stated, HP played catch up or just stopped playing.

For me personally, the HP scopes are just not attractive in their esthetics.  No offense to those who like them, just my personal preference and opinion.  I find that the earlier TEK scopes almost always had a more intuitive layout on their scopes and a more attractive panel design.  In the categories of Esthetics and ergonomics, the devil is definitely in the details, TEK got it right most of the time.  Either brand of scope is likely much more capable of performing than my poor old brain is in understanding.

Great piece of information and history from Dennis, Thanks Again     
--
Michael Lynch
Dardanelle, Arkansas


Re: Advice about buying a 7904

Reginald Beardsley
 

I *never* am happy with *any* machinery noise. I find it extermely irritating and distracting. Probably because my brain is programmed to analyze noise.

Can someone post a link to a photo of the 7A19 fuse? I'm curious how hard it would be to make them

Reg