Date   

1S1 repair news :-)

Michael Dunn <mdunn@...>
 

Yoohoo. I'm making progress repairing my 1S1 1GHz sampling plug-in. The biggest problem was a kaput power supply filter cap - totally dead - well, many, many kohms ESR. Replaced the big old can with a part about 1/6 the volume, yet almost twice the capacitance, and much better quality to boot! Semiconductors aren't the only technology that's improved in the last 35 years!

Also paralleled the smaller final power supply output stability caps with new ones, again much smaller, yet more C's!

As for the six missing GaAs diodes in the sampling bridge and elsewhere, I got some SMT Schottky diodes as hopeful subs. The unit is now working somewhat - there are some triggering and offset problems. But, with the right settings and input, I can get a valid trace!!! Whether these probs are a result of the Schottkys, I don't yet know. All I can say is, it's VERY cool to scroll over a 200MHz waveform at 35ps/div! (yes, 35ps. 0.035ns!) Though a bit useless, as the risetime of the thing is *only* about 300ps...


Re: 1S1 repair news :-)

Michael <mdd@...>
 

Sometime on Fri, 06 Oct 2000, you wrote:

-is now working somewhat - there are some triggering and offset
-problems. But, with the right settings and input, I can get a valid
-trace!!! Whether these probs are a result of the Schottkys, I don't
-yet know. All I can say is, it's VERY cool to scroll over a 200MHz
-waveform at 35ps/div! (yes, 35ps. 0.035ns!) Though a bit useless,
-as the risetime of the thing is *only* about 300ps...
Congratulations!
:)
Michael


Re: 453

Michael <mdd@...>
 

Hi again, :)

Sometime on Fri, 06 Oct 2000, you wrote:
-Michael wrote:
-> I second that. But I don't think I've ever seen one for sale... I wanted
-> to buy the one I was working with, and Peter wouldn't sell it to me...
-If you really want a 453, you can find them for sale of eBay and in various
-classified ads for used test equipment. Not everything on eBay sells for
-outrageous prices . . .
-Stan
I guess you're right. But I've just shelled out $600 for an "as new" 7603
(actually it was cheap!) (and it was "as new" until the post office broke
it...) and don't have any more "big" money left right now.

But later on, I will be looking out for a 453. :)

What I *would* like right now are some calibration standards...

Cheers,
:)
Michael

--

Michael VK2XMD 0404-478-205 http://members.dingoblue.net.au/~mdd/
I used to have a handle on life, but it broke ...


T&M Museum / New Release 1.10

stgraef <stgraef@...>
 

Hi there,

in between I reworked my online museum.
All visitors are welcome again at http://www.planet-interkom.de/stgraef .

You'll find there some service documents about Tek instruments. Maybe someone
(Stan ?!) can check for errors or so. I also have a large assortment
of spare parts (like the 556 final tubes) - but remember: I'm located in Germany.

I will not comment any replys as I'm on buisness trip for the next two weeks.

If someone has interesting material which should be published for all of us,
please let me know if you have no possibility for an own homepage.

-------------------------------------------------------------------------------------------------------------
To Stan:

Did you remember all the stuff about the 551/555 interconnection cable?
Do you have any backups? It would be a great help for me - otherwise
I have to check the whole stuff once more.
-------------------------------------------------------------------------------------------------------------

There is a friend of mine (who will also get this message) who obtains
an online Tek-only museum too. At the moment he scanned some of
his and mine Tek catalogs, and I will convert them to pdf files.
If the stuff is available on CD-ROM we'll let you know.

Check his collection at http://www.tekscope-museum.de

That's all for now. Have a good electron glow!

Stefan


Tek catalogs

Michael Dunn <mdunn@...>
 

At 2:52 PM +0200 2000/10/08, stgraef wrote:
At the moment he scanned some of
his and mine Tek catalogs, and I will convert them to pdf files.
If the stuff is available on CD-ROM we'll let you know.
I can burn CDs (and scan pages). I may also have access to some old catalogs. I'll check...

-----------------------------------------------------------------
Michael Dunn | Surround Sound Decoder & Stereo Enhancement
Cantares | Self-Amplified Speakers, Test Equipment
74 George St. | Ambisonic Surround Sound CDs and Recording
Waterloo, Ont. | (519) 744-9395 (fax: 744-7129)
N2J 1K7 | mdunn@...
Canada | http://www.cantares.on.ca/
-----------------------------------------------------------------


Re: Tek catalogs

Stan or Patricia Griffiths <w7ni@...>
 

I would be careful not to copy any Tektronix copyrighted material
without their written permission. When I wrote my book, I got official
written permission from Tektronix to use pictures from their old
catalogs in my book. Since their old catalogs are copyrighted, official
written permission is required.

It is true that there are individuals and companies who have been
copying Tek copyrighted material for years and getting away with it but
it is definitely not legal. On a few special occasions in the past, I
believe Tek has given permission to the U.S. Military to copy parts of
certain specific manuals, but I don't believe they have given permission
to any individual or company to ever copy entire manuals, catalogs, or
other technical materials that Tek produces.

I have also heard that some individuals have asked permission from Tek
to copy some of their Concept Books and they have been specifcally
denied permission to do the copies. Tek has shown more interest
recently in illegal copies of their stuff. I just wouldn't do it
without Tek's permission if I were you . . . and I would not accept
permission from the local Sales Office either. Real permission must
come from the Tektronix Legal Department in Beaverton, OR.

Stan
w7ni@...

Michael Dunn wrote:

At 2:52 PM +0200 2000/10/08, stgraef wrote:
At the moment he scanned some of
his and mine Tek catalogs, and I will convert them to pdf files.
If the stuff is available on CD-ROM we'll let you know.
I can burn CDs (and scan pages). I may also have access to some
old catalogs. I'll check...

-----------------------------------------------------------------
Michael Dunn | Surround Sound Decoder & Stereo Enhancement
Cantares | Self-Amplified Speakers, Test Equipment
74 George St. | Ambisonic Surround Sound CDs and Recording
Waterloo, Ont. | (519) 744-9395 (fax: 744-7129)
N2J 1K7 | mdunn@...
Canada | http://www.cantares.on.ca/
-----------------------------------------------------------------

To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...


Re: Tek catalogs

stgraef <stgraef@...>
 

Hi Stan,

of course you're right! I have a writed permission from Tek for non-profit
copying.
I also contacted all other companies mentioned at me homepage.
Most will understand the internet as a "copy-and-paste-all-free" collection.
But I thing all material should be published with permission from the
authors.
And most of them will agree for our purposes.

Stefan

-----Urspr�ngliche Nachricht-----
Von: Stan or Patricia Griffiths <w7ni@...>
An: <TekScopes@...>
Gesendet: Montag, 9. Oktober 2000 23:00
Betreff: Re: [TekScopes] Tek catalogs

I would be careful not to copy any Tektronix copyrighted material
without their written permission. When I wrote my book, I got official
written permission from Tektronix to use pictures from their old
catalogs in my book. Since their old catalogs are copyrighted, official
written permission is required.

It is true that there are individuals and companies who have been
copying Tek copyrighted material for years and getting away with it but
it is definitely not legal. On a few special occasions in the past, I
believe Tek has given permission to the U.S. Military to copy parts of
certain specific manuals, but I don't believe they have given permission
to any individual or company to ever copy entire manuals, catalogs, or
other technical materials that Tek produces.

I have also heard that some individuals have asked permission from Tek
to copy some of their Concept Books and they have been specifcally
denied permission to do the copies. Tek has shown more interest
recently in illegal copies of their stuff. I just wouldn't do it
without Tek's permission if I were you . . . and I would not accept
permission from the local Sales Office either. Real permission must
come from the Tektronix Legal Department in Beaverton, OR.

Stan
w7ni@...

Michael Dunn wrote:

At 2:52 PM +0200 2000/10/08, stgraef wrote:
At the moment he scanned some of
his and mine Tek catalogs, and I will convert them to pdf files.
If the stuff is available on CD-ROM we'll let you know.
I can burn CDs (and scan pages). I may also have access to some
old catalogs. I'll check...

-----------------------------------------------------------------
Michael Dunn | Surround Sound Decoder & Stereo Enhancement
Cantares | Self-Amplified Speakers, Test Equipment
74 George St. | Ambisonic Surround Sound CDs and Recording
Waterloo, Ont. | (519) 744-9395 (fax: 744-7129)
N2J 1K7 | mdunn@...
Canada | http://www.cantares.on.ca/
-----------------------------------------------------------------

To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...


To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...



Re: Tek catalogs

Stan or Patricia Griffiths <w7ni@...>
 

Hi Stephan,

It looks like you are doing all of the right things to get permission. I have
just never heard of Tektronix granting such permission. Has Tek actually
responded to you with written permission to publish some of their copyrighted
material on the web? I would be surprised if they did . . . If they have given
you written permission, I would certainly like to know since I have asked and
been denied permission for a few things I would like to publish.

Stan
w7ni@...

stgraef wrote:

Hi Stan,

of course you're right! I have a writed permission from Tek for non-profit
copying.
I also contacted all other companies mentioned at me homepage.
Most will understand the internet as a "copy-and-paste-all-free" collection.
But I thing all material should be published with permission from the
authors.
And most of them will agree for our purposes.

Stefan

-----Urspr�ngliche Nachricht-----
Von: Stan or Patricia Griffiths <w7ni@...>
An: <TekScopes@...>
Gesendet: Montag, 9. Oktober 2000 23:00
Betreff: Re: [TekScopes] Tek catalogs

I would be careful not to copy any Tektronix copyrighted material
without their written permission. When I wrote my book, I got official
written permission from Tektronix to use pictures from their old
catalogs in my book. Since their old catalogs are copyrighted, official
written permission is required.

It is true that there are individuals and companies who have been
copying Tek copyrighted material for years and getting away with it but
it is definitely not legal. On a few special occasions in the past, I
believe Tek has given permission to the U.S. Military to copy parts of
certain specific manuals, but I don't believe they have given permission
to any individual or company to ever copy entire manuals, catalogs, or
other technical materials that Tek produces.

I have also heard that some individuals have asked permission from Tek
to copy some of their Concept Books and they have been specifcally
denied permission to do the copies. Tek has shown more interest
recently in illegal copies of their stuff. I just wouldn't do it
without Tek's permission if I were you . . . and I would not accept
permission from the local Sales Office either. Real permission must
come from the Tektronix Legal Department in Beaverton, OR.

Stan
w7ni@...

Michael Dunn wrote:

At 2:52 PM +0200 2000/10/08, stgraef wrote:
At the moment he scanned some of
his and mine Tek catalogs, and I will convert them to pdf files.
If the stuff is available on CD-ROM we'll let you know.
I can burn CDs (and scan pages). I may also have access to some
old catalogs. I'll check...

-----------------------------------------------------------------
Michael Dunn | Surround Sound Decoder & Stereo Enhancement
Cantares | Self-Amplified Speakers, Test Equipment
74 George St. | Ambisonic Surround Sound CDs and Recording
Waterloo, Ont. | (519) 744-9395 (fax: 744-7129)
N2J 1K7 | mdunn@...
Canada | http://www.cantares.on.ca/
-----------------------------------------------------------------

To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...


To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...



To unsubscribe from this group, send an email to:
TekScopes-unsubscribe@...


Re: Parts needed

Thomas P. Gootee
 

Michael,

Do you know the Tek part number?
I know a guy who just bought an assortment of Tek pots.

Tom Gootee
tomg@...
http://www.fullnet.com/u/tomg

--- In TekScopes@..., Michael <mdd@d...> wrote:

Hi all,

I have just taken delivery of a 7603, and in transit, the
intensity/readout
controls were damaged. It needs a new ganged pot and concentric
knobs.

Can anyone recommend a supplier who takes Amex?

Thanks and regards,
:)
Michael


--

Michael VK2XMD 0404-478-205 http://members.dingoblue.net.au/~mdd/
I used to have a handle on life, but it broke ...


What's this Tek item?

Thomas P. Gootee
 

Hi, all. I just purchased a "Tektronix Multiplexer Control Unit",
for the huge sum of $2.25. (I guess no one else was paying
attention, at the time! (Ebay, last night!))

It includes 23 individual S-1 Sampling Heads plugins, which I think I
am somewhat familiar with.

But, it also includes 32 individual "S-3260/Mod 20 Compensator"
plugins. I have NO IDEA what these are, and can't seem to find ANY
information with web searches.

I am hoping to help finance my Tek scope lust, with this windfall. I
know the sampling heads are worth a little something. But I haven't
a clue as to the usefulness of the compensators...

Does anyone know what these are good for? (First good answer gets a
free Compensator plugin, post-paid...!)

Thanks!!

Tom Gootee
tomg@...


Re: What's this Tek item?

Stan or Patricia Griffiths <w7ni@...>
 

Wow, I need to pay more attention to eBay! You got a REAL STEAL on this
stuff, and yes, I know what it is.

The Tek S-3260 is a very large computer controlled system for testing
integrated circuits. It is vintage about 1975 or so. Some of the options
for the S3260 included a 568 scope with 3S6 and 3T6 sampling plugins for
making some very fast risetime measurements on the IC under test. The
S3260 was capable of handling large scale ICs with up to 64 pins in its
largest configuration (they may have even made larger ones than that). Any
way, the 568/3T6/3S6 is only a two channel sampling system so how do you
look at 64 IC pins with only two channels? The answer is that you multiplex
the two channels to all 64 pins. How do you do that without losing all the
fast capability of the sampling system? The answer is that you locate the
sampling heads (S1's in this case) as physically close to the IC pins as you
can and dedicate one S1 to each IC pin and multiplex the S1's to the two 3S6
channels. The multiplexing is done in groups of up to four sampling heads
plugged into a 286 Sampling Head Multiplexer. If your system needs more
than four sampling heads multiplexed, you can multiplex up to four 286's
with one 288, for a total of up to 16 sampling heads. Still not enough
sampling heads? OK, you can slave up to three 287's to one 288, each one
loaded with four 286's, with each of those 286's loaded with up to four
sampling heads, for a grand total of 64 sampling heads multiplexed. All of
this is explained with pictures on page 251 of your 1973 Tektronix Catalog .
. .

The multiplexers (286's, 287's, and 288's) are not particularily valuable
today (except as maybe an addition to my collection!) since they are only
one component of a large S3260 system and you don't have the rest of it,
like the DEC PDP-11 computer, the Tek 1340 Interface Units, and the
necessary software to control it all. The S1's however, are the gold at the
end of this rainbow! The 1989 Tek Catalog lists S1 Sampling Heads available
from Tek new at a cost of $1695 each! (And you got 23 of them for $2.25 . .
. ! ! not to mention the 286's, etc.) Anyway, those same sampling heads
are useful in the 3S2, 7S11, 7S12 and a few other sampling plugins. So, if
those sampling heads actually work, you should be able to get at least 1000
times your money back . . . but you would really need to check them out
first to expect that kind of return. You say you don't know how to check
them out? OK, so I will give you ten times your money right now and I'll
check them out . . . how about that! 8-)

I took a look at the picture of the stuff you bought and I actually counted
55 sampling heads in the picture. You could always complain to the seller
that you thought you were getting everything shown in the picture and you
expect to recieve all 55 sampling heads . . . ! ! (Then you should be able
to get 2000 times your money ! ! )

Surely this detailed explanation is worth one sampling head and not just a
crumby old useless S3260 compensator card, right?

Stan
w7ni@...

tomg@... wrote:

Hi, all. I just purchased a "Tektronix Multiplexer Control Unit",
for the huge sum of $2.25. (I guess no one else was paying
attention, at the time! (Ebay, last night!))

It includes 23 individual S-1 Sampling Heads plugins, which I think I
am somewhat familiar with.

But, it also includes 32 individual "S-3260/Mod 20 Compensator"
plugins. I have NO IDEA what these are, and can't seem to find ANY
information with web searches.

I am hoping to help finance my Tek scope lust, with this windfall. I
know the sampling heads are worth a little something. But I haven't
a clue as to the usefulness of the compensators...

Does anyone know what these are good for? (First good answer gets a
free Compensator plugin, post-paid...!)

Thanks!!

Tom Gootee
tomg@...


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TekScopes-unsubscribe@...


Re: Parts needed

Michael <mdd@...>
 

Hiya. :)

Sometime on Tue, 17 Oct 2000, you wrote:

-Do you know the Tek part number?
-I know a guy who just bought an assortment of Tek pots.
I'm expecting a copy of the manual shortly, I'll let you know and you can ask
if he has one if you don't mind.

Thanks and regards,
:)
Michael


--

Michael VK2XMD 0404-478-205 http://members.dingoblue.net.au/~mdd/
I used to have a handle on life, but it broke ...


Tek 11301/302/A Scopes

mhaubmann@...
 

Dear Listmembers!

I am interested if anyone knows if the vertical plugins like
7A19,7A24,... work also in the 11302(A) Scopes
(The calibration plugin does so)
and what disadvantages this would have except that they are not
programmable.

I am also searching the female 7k scopes plugin connector.
(I purchased a 7k rugged plugin extender which is missing the white
cover plastic strip and four contacts, but the photograph was taken
from the other side so the ..... was not visible to me)

Thank You very much

Michael B. Haubmann
mhaubmann@...


Re: Tek 11301/302/A Scopes

Stan or Patricia Griffiths <w7ni@...>
 

If you bought that 7K extender on eBay, I think you should file a complaint
against the seller for misrepresenting the item he was selling. Ebay does
not like that very much and will kick him off it it happens a couple more
times. I don't like it either and I take great pains to try to describe
everything I sell including details of anything minor that is missing or not
quite right . . . I also try to photograph the WORST side . . . or both
sides.

Stan
w7ni@...

mhaubmann@... wrote:

Dear Listmembers!

I am interested if anyone knows if the vertical plugins like
7A19,7A24,... work also in the 11302(A) Scopes
(The calibration plugin does so)
and what disadvantages this would have except that they are not
programmable.

I am also searching the female 7k scopes plugin connector.
(I purchased a 7k rugged plugin extender which is missing the white
cover plastic strip and four contacts, but the photograph was taken
from the other side so the ..... was not visible to me)

Thank You very much

Michael B. Haubmann
mhaubmann@...


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TekScopes-unsubscribe@...


Re: Tek Audio test set aa5001/sg5010

STEVE WILKINS <g7mdm@...>
 

Dear All,
is there any one out there who fixes the above in the Toronto area ?
The unit is used professionally and is in need of some TLC on the analyser
regards
Steve
_________________________________________________________________________
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Re: Parts needed

Michael <mdd@...>
 

Hiya. :)

Sometime on Tue, 17 Oct 2000, you wrote:

-Do you know the Tek part number?
-I know a guy who just bought an assortment of Tek pots.
Yep. Part number is: 311-1404-00

Hope you can help...

Thanks and regards,
:)
Michael

--

Michael VK2XMD 0404-478-205 http://members.dingoblue.net.au/~mdd/
I used to have a handle on life, but it broke ...


Free Tek 422 for parts/fixer upper

Chris Beck <europachris@...>
 

I have a clean Tek 422 but it does not work. I was told it was the power
supply and that there may be a flyback problem. I haven't verified either
problem, and just don't have the time or the desire to track it down. I
looked around in the power supply and didn't see any obvious signs of
distress, so who knows. The fellow who gave it to me is a chief engineer at a
TV station, so I would assume he knew what he was looking at.

I've got my big 535A anchor and a small Hitachi 40mHz scope for when I need
portablilty, so I'd rather see it go to a good home (USA, preferably) as a
parts donor or fixer-upper project.

The scope is REALLY clean, but the foam lining of the accessory area in the
front cover turned to goo long ago. It would need a bit of elbow grease to
clean it up and replace it. I think there may even be a probe and power cord
in there, I'll have to check.

So, it is free for the asking, all I ask is the "buyer" pay the shipping.
I'll box it up real well so it won't get wrecked.

Thanks,

Chris Beck
West Bend, Wis.

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CRT

Daniel Nespoulous <f1bud@...>
 

Hello, I am a new user of this list.
I am a French amatteur radio and I seek a CRT for the Tektronix 2215 PN 154-0838-00. If you ave an idea send me.
Thank you for your responce.


Re: Free Tek 422 for parts/fixer upper

Daniel Nespoulous <f1bud@...>
 

Thank you very much but I seek just the crt. The 2215 that I have in is very good state.

Thanks,

Daniel Nespoulous F1BUD


Hello everyone @ tekscopes

Stuart Hellier <sjhel@...>
 

I have been looking for other fans of vintage tektronix stuff for
ages! I have an old 545b unit with ca dual trace plug in module, but
I have a few problems with it & have not been able to find a service
manual.

I am a sound engineer from the U.K & no one seems to know much about
old tek gear (including tektronix U.K)! So if any of you guys could
lead me to any technical data or service manuals, it would be most
helpful.

I checked out the SND tube sales site the other day & discovered that
Tektronix used to make a valve curve tracer (the 570). I do quite a
lot of work on old valve equipment, (usually fixing guitar amps for
friends) & it would be great to test the valves I have to see how
well they match. Many amps that come in have an assortment of valves
where one has been replaced when it has finally expired instead of a
new matched set being fitted.

Thanks to stefan for the T & M museum, theres some useful &
interesting stuff in there, & I enjoyed looking through the exhibits.

Bye for now, I shall log on again soon!