¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date

Re: Best way to ship a Tek 7904 mainframe?

 

Hi,
as far as i know the size limit of USPS shipping to Germany (Europe?) is as
follows

2 x width + 2 x height + length < 108"

where width and heigth are the smaller dimensions, length the largest. This
means you can ship a big 19" rack, if the package doesn't add more than 2" on
each side. This is possible using massive styrofoam sheets, not bubble wrap
or chips (is too soft). A 7904 should fit, too. Also it should have GLAS
written on it in thick letters!

Cost of USPS economy parcel post (surface) for a heavy 19" device can be US $
70, which is a lot cheaper than UPS and Fedex. You have to be patient though,
since it takes 4 to 6 weeks to arrive. And some sellers don't like to go to a
post office and deliver it there. Maybe you have to share the savings!

Hope this helps.

Regards
Dieter Teuchert


tomgootee wrote:

Jose,

The $295 is not too far off. I do know that UPS is usually a little
cheaper than FedEx. I shipped a 7854 from here (Indiana, USA) to
Portugal, once, and it cost $255, using UPS, by air. Someone else
mentioned Airborne being significantly cheaper than that. I plan to
check that out, the next time I ship overseas. I do know that for
many items, the US Postal Service (USPS) is often way cheaper than
UPS and FedEx (about 1/2?), when shipping overseas by air. But there
are some size limits. It's possible to ship asomething like a 475
scope overseas/air via USPS. But I think that may be about the limit.
You can check out the shipping prices, etc, at www.ups.com,
www.fedex.com, and www.usps.com.

The box size can make a large difference in the shipping cost, since
they use the larger of weight and "dimensional weight". Obviously,
they have to charge for space as well as weight, since there's
limited space in an aircraft... (For the 7854, I used a box that was
36x18x18 inches. Using the method below, it arrive in perfect
condition.)

You mentioned that the scope was already professionally packed. I
guess the quality of the packing job would depend on exactly who the
professionals were. A heavy instrument, with fragile, protruding
front-panel parts, is quite a challenge, when trying to insure that
no damage can occur in transit. Foam-in-place MAY be the best way to
go. But most individuals don't have access to that, anyway. When I
ship large scopes (and I ask for this whenever I'm having one shipped
to ME), I always very-securely tape large pieces of relatively thin,
very rigid foam-board to the sides of the scope, so that they
protrude farther to the front and rear than any of the scope's parts.
If you imagine the box being dropped and landing on the front-panel
end, it's easy to see how even a thick pad of bubble-wrap could break
parts that protrude from the panel. The foam-board method is cheap,
quick, and easy, which also helps when I'm requesting it of a seller.
Of course, after applying the foam-board, I also wrap the entire
scope in my usual 3+ inches of bubble wrap, and then fill any voids
with foam peanuts.

Good luck with that 7904!

Tom Gootee



--- In TekScopes@y..., "JOSE V. GAVILA (EB5AGV/EC5AAU)" <eb5agv@c...>
wrote:
Hello!

I have located a very nice Tektronix 7904 / 7B92 / 7A16A / 7A13
system but
have the _small_ problem of shipping it from USA to Spain. It is
already
professionally packaged but quoted price is $295 (by FedEx). I
wonder if
there is any other way to send such an item to Spain, without
incurring in
so large expenses. Perhaps some of you have experiences sending
items
overseas?

Thanks!

JOSE
--------------------------------------------------------------------
--
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN)

EB5AGV Vintage Radio Site:

European Boatanchors List:



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



Your use of Yahoo! Groups is subject to


Re: Tek 571 curve tracer

 

I can't seem to verify it, but my recollection is the 571 is a Sony Tek
product. Comments?


Re: Tek 571 curve tracer

Phil (VA3UX)
 

At 05:59 AM 1/26/2002 -0800, you wrote:
Yep. I said that and I was WRONG! There it is in my 1993 Tek Catalog. This
was a new one on me. I left Tek in 1989 and I suspect this instrument was
introduced after I was gone. I've never seen one.
Well don't feel bad. I'd never heard of one either and it seems strange that they would use a 570-series product number in the 1990's. Oh well. Now we all know.

Phil




Stan
w7ni@...

"Phil (VA3UX)" wrote:

You guys were talking about a type 571 curve tracer a few days back. I
think someone said that there was no type 571 (if I'm remembering this
wrong, my apologies).

I ran across this type 571 curve tracer on eBay :



Phil





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



Your use of Yahoo! Groups is subject to


Re: Best way to ship a Tek 7904 mainframe?

 

Jose,

The $295 is not too far off. I do know that UPS is usually a little
cheaper than FedEx. I shipped a 7854 from here (Indiana, USA) to
Portugal, once, and it cost $255, using UPS, by air. Someone else
mentioned Airborne being significantly cheaper than that. I plan to
check that out, the next time I ship overseas. I do know that for
many items, the US Postal Service (USPS) is often way cheaper than
UPS and FedEx (about 1/2?), when shipping overseas by air. But there
are some size limits. It's possible to ship asomething like a 475
scope overseas/air via USPS. But I think that may be about the limit.
You can check out the shipping prices, etc, at www.ups.com,
www.fedex.com, and www.usps.com.

The box size can make a large difference in the shipping cost, since
they use the larger of weight and "dimensional weight". Obviously,
they have to charge for space as well as weight, since there's
limited space in an aircraft... (For the 7854, I used a box that was
36x18x18 inches. Using the method below, it arrive in perfect
condition.)

You mentioned that the scope was already professionally packed. I
guess the quality of the packing job would depend on exactly who the
professionals were. A heavy instrument, with fragile, protruding
front-panel parts, is quite a challenge, when trying to insure that
no damage can occur in transit. Foam-in-place MAY be the best way to
go. But most individuals don't have access to that, anyway. When I
ship large scopes (and I ask for this whenever I'm having one shipped
to ME), I always very-securely tape large pieces of relatively thin,
very rigid foam-board to the sides of the scope, so that they
protrude farther to the front and rear than any of the scope's parts.
If you imagine the box being dropped and landing on the front-panel
end, it's easy to see how even a thick pad of bubble-wrap could break
parts that protrude from the panel. The foam-board method is cheap,
quick, and easy, which also helps when I'm requesting it of a seller.
Of course, after applying the foam-board, I also wrap the entire
scope in my usual 3+ inches of bubble wrap, and then fill any voids
with foam peanuts.

Good luck with that 7904!

Tom Gootee



--- In TekScopes@y..., "JOSE V. GAVILA (EB5AGV/EC5AAU)" <eb5agv@c...>
wrote:
Hello!

I have located a very nice Tektronix 7904 / 7B92 / 7A16A / 7A13
system but
have the _small_ problem of shipping it from USA to Spain. It is
already
professionally packaged but quoted price is $295 (by FedEx). I
wonder if
there is any other way to send such an item to Spain, without
incurring in
so large expenses. Perhaps some of you have experiences sending
items
overseas?

Thanks!

JOSE
--------------------------------------------------------------------
--
73 EB5AGV / EC5AAU - JOSE V. GAVILA
La Canyada - Valencia (SPAIN)

EB5AGV Vintage Radio Site:

European Boatanchors List:


Re: Tek 571 curve tracer

Stan or Patricia Griffiths
 

Yep. I said that and I was WRONG! There it is in my 1993 Tek Catalog. This
was a new one on me. I left Tek in 1989 and I suspect this instrument was
introduced after I was gone. I've never seen one.

Stan
w7ni@...

"Phil (VA3UX)" wrote:

You guys were talking about a type 571 curve tracer a few days back. I
think someone said that there was no type 571 (if I'm remembering this
wrong, my apologies).

I ran across this type 571 curve tracer on eBay :



Phil


Re: Warning - Military Manuals

Stan or Patricia Griffiths
 

Congratulations Lynn,

You are the second person to get this permission that I know of (I was the
first). This is almost exactly the same letter that I got and from the same guy
(John Winkleman). I really was not going to publish his name since I did not
want him to get buried in copy requests . . . but the cat is out of the bag now
and I certainly hope John does not regret doing this for us . .

I noticed that John granted you permission to make copies of the documents that
you described in your letter to him. You did not tell us what those documents
were . . . manuals, I assume . . .

Stan
w7ni@...

Lynn Lewis wrote:

Tektronix Copyright is not a problem. I checked with both the Army and with
Tektronix before I distributed any PDF files.
Here are my questions and the answers provided by the Army:

* * * * * * * * * *
text missing here.


Re: Warning - Military Manuals

Stan or Patricia Griffiths
 

Hi Jim,

I think you are way off base on this one, Jim. I have to admit I am not a
copyright attorney, but even if you bought a book, you did not buy the
copyrights for it. How could buying a piece of equipment grant you the
copyrights to its documentation? You probaly got a copy with the equipment
and that is what you have . . . ONE copy. That is what copyright protection
is all about . . . you DO NOT have the right to make copies. If you buy one
copy of a software program, for example, you certainly do not have permission
to make and sell more copies of it . . . Same goes for manuals, books,
music, artwork, etc, etc.

Stan
w7ni@...

jcastanton wrote:

Jim,

We had a long discussion about copyright last year. If we were to
have a private library for anything not specifically in the public
domain we should have no copyright problems. If you own the
instrument you probably purchased the copyright to the documentation
with it, so you are entitled to the information.

John Stanton

--- In TekScopes@y..., "Jim Nunn" <jimnunn0000@e...> wrote:
I have an underused FTP site, so if you would like to place your
complete manuals on it and make it a group resource, let me know
(atjstanton@v...).
John

Setting up a library of Tek manuals on the web would be extremely
useful to
the Tek collector community assuming that we do not break any
copyright
laws. Perhaps Tektronix would grant us permission for the older
manuals
that they no longer support.

I would be happy to scan my manuals,500 series and plugins and
supply them
in PDF format for your web page.

Jim Nunn

jimnunn0000@e...

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



Your use of Yahoo! Groups is subject to


Re: Warning - Military Manuals

Stan or Patricia Griffiths
 

jcastanton wrote:

Jim,

I have an underused FTP site, so if you would like to place your
complete manuals on it and make it a group resource, let me know (at
jstanton@...).

I have some PDF manuals I can share as well.

Regards

John Stanton
Hi John,

I would recommend caution in making this offer. Virtually ALL Tektronix
manuals are copyrighted and in my conversations with a Tek Patent and
Copyright Attorney (currently working at Tek), he does not think ANY Tek
manuals are in the "public domain" even if the U.S.Government thinks they
are. Tek DID grant various branches of the U.S. military permission to copy
parts of certain Tek manuals for inclusion in military manuals with the
limitation that the copies were for military use only. I have seen a
statement to that effect in copies of military manuals that I have seen. It
actually says that parts of the info in those manuals is copyrighted and
reprinted with permission of Tektronix.. Some people choose to interpret
that statement to mean that it is now OK for the world to copy that
copyrighted material. When I suggested this to my Tek Copyright Attorney
friend, he actually laughed outloud! He certainly does not believe any of
Tek's copyrighted material, including manuals, those parts of military
manuals copied from Tek by the various branches, Tek catalogs, concepts
books, etc are in the public domain, with the possible exception of some
stuff done over 50 years ago, which means before 1952. The copyright notice
in those military manuals should be taken as a notice that portions of that
manual ARE COPYRIGHTED by Tek. Just because Tek recently granted ME
permission to copy their obsolete manuals (just like they granted this same
permission to the military) does NOT mean that I have the right to grant this
permission to you or anyone else. This essentially means that the military
does not have the right to grant YOU permission to copy Tek's still
copyrighted materials, despite what certain military spokespeople might try
to tell you . . . Tek still owns all of this stuff.

Having said that, I have been working for a few years to obtain permission
from the Tek Legal Department to copy and sell copies of early manuals and
other publications. I now have that written permission in my hand in the
form of a letter on Tek letterhead from the Tektronix Legal Department. I
believe I am the only individual or company to ever obtain such sweeping
permission from Tektronix. I plan to start making copies of Tek manuals and
other documents on CD ROM in the near future but I also plan to include a
copy of the official Tek "Modification Summary" for each instrument whose
documentation I offer on CD.

It is apparent that Tek does not seem to care much if people copy and
distribute obsolete manuals that can no longer be purchased from Tek, even
though this violates Tek's copyrights. There is one guy offering the TDS3000
manual on CD ROM on eBay right now and the Tek Attorney seemed very
interested in THAT . . . I thinkTek still sells the TDS3000 manuals . . . so
this guy could be cutting into Tek's revenue.

The other issue of interest is that most sellers of old Tek manuals on CD are
using eBay to make their sales. eBay has a very strict policy about selling
copyrighted materials on eBay and you can lose your eBay priviliges if they
catch you doing it. So, if you are thinking of getting into the business of
copying and selling old Tektronix documentation, I suggest you start where I
did . . . get permission from the Tektronix Legal Department. If you don't,
it amounts to theft of Tek's intellectual property.

One guy showed me a copy of a letter he got from a low-level Tektronix
Manuals Manager permitting him to make copies. I am sorry, but this
permission can only come from Tek's Legal Department. Low level managers
simply do not have the authority to bind Tek to agreements like that . . .

Stan
w7ni@...

PS For those of you who own copies of my book about early Tek scopes, take a
look on the back side of the first page of the book. There you will find my
own copyright statement but, more important, you will see that I received
official permission from Tektronix (Legal Department) to use photos of
instruments that I cut and pasted from old Tek Catalogs. I have the letter
of permission on file, if anyone doubts it. Getting permission is the
correct way to do this . . .


Re: Question for the experts

Lynn Lewis
 

Thanks Dieter, I appreciate it.

-----Original Message-----
From: Dieter Teuchert [mailto:dieter@...]
Sent: Saturday, January 26, 2002 2:26 AM
To: TekScopes@...
Subject: Re: [TekScopes] Question for the experts


Lynn,
the 7D11 digital delay plugin is very interesting, too. You sometimes see
them
go at ebay for $ 20.
It contains a 500 MHz oszillator phase locked to a good 5 MHz quartz and a
complete divider chain down to 1 Hz. You can run this unit with your own
+/- 15V
and +5V power supply and get all the signals needed to calibrate the
timebase of
your scopes.
I have the service manual, in case you need some schematic.
Regards
Dieter Teuchert


Re: Question for the experts

 

Lynn,
the 7D11 digital delay plugin is very interesting, too. You sometimes see them
go at ebay for $ 20.
It contains a 500 MHz oszillator phase locked to a good 5 MHz quartz and a
complete divider chain down to 1 Hz. You can run this unit with your own +/- 15V
and +5V power supply and get all the signals needed to calibrate the timebase of
your scopes.
I have the service manual, in case you need some schematic.
Regards
Dieter Teuchert

Lynn Lewis wrote:

I would like to get to the point where I can calibrate my own
oscilloscopes. To keep this question within reasonable limits, let's say (1)
analog only and (2) 500MHz or less. Rather than buy all this specialized
equipment, some of which seems to go with one scope and not with another,
can I buy generic equipment with minimum specifications that I can use to
calibrate any scope within those limitations? If yes, what do you recommend?



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



Your use of Yahoo! Groups is subject to


Re: repairing a 454

Craig Sawyers
 

Try Deane Kidd - he seems to have just about everything I've asked him for.
His e-mail is dektyr@...

Good luck

Craig

anyone have a schematic of the sweep circuit and the board layout for
a 454 scope. The serial # is B256125. Been looking for a manual for
it and not having any luck.


repairing a 454

 

anyone have a schematic of the sweep circuit and the board layout for
a 454 scope. The serial # is B256125. Been looking for a manual for
it and not having any luck.


Tek 571 curve tracer

Phil (VA3UX)
 

You guys were talking about a type 571 curve tracer a few days back. I think someone said that there was no type 571 (if I'm remembering this wrong, my apologies).

I ran across this type 571 curve tracer on eBay :



Phil


Re: Question for the experts

Phil (VA3UX)
 

Lynn, at least a constant amplitude signal generator, a time-mark generator and perhaps a square wave generator.

For the constant amplitude sig generator the Tek type 191 goes to 100 Mhz. The Tek "calibration fixture" type 067-0532-01 is another constant amplitude sig generator that covers 65 - 500 Mhz (the thing looks like it was actually made by GR).

For the time mark generator either the Tek type 184 or the type 2901.

An accurate voltage reference would also be needed but I wouldn't know what to suggest there. Fluke made that sort of thing but I don't know any model numbers. All of the stuff mentioned here can be used with any scope. I'm just a hobbyist so I think the real Tek guys will suggest even more than I have.

Phil

At 09:20 PM 1/25/2002 -0600, you wrote:
I would like to get to the point where I can calibrate my own
oscilloscopes. To keep this question within reasonable limits, let's say (1)
analog only and (2) 500MHz or less. Rather than buy all this specialized
equipment, some of which seems to go with one scope and not with another,
can I buy generic equipment with minimum specifications that I can use to
calibrate any scope within those limitations? If yes, what do you recommend?





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



Your use of Yahoo! Groups is subject to


Question for the experts

Lynn Lewis
 

I would like to get to the point where I can calibrate my own
oscilloscopes. To keep this question within reasonable limits, let's say (1)
analog only and (2) 500MHz or less. Rather than buy all this specialized
equipment, some of which seems to go with one scope and not with another,
can I buy generic equipment with minimum specifications that I can use to
calibrate any scope within those limitations? If yes, what do you recommend?


Re: Silly prices on eBay

Lynn Lewis
 

That's not a bad price. Is there any chance the 500 series extender can be
made to fit a 7000?

I had thought about taking a female from a backplane and a male from the
back of a junk card and making my own extender. The problem is that the
cards don't have print running to all the pins. I remember seeing something,
in MCM I think, where you could "paint" new print on a PCB. Has anyone here
ever tried that?

-----Original Message-----
From: Richard W. Solomon [mailto:w1ksz@...]
Sent: Friday, January 25, 2002 5:20 PM
To: TekScopes@...
Subject: RE: [TekScopes] Silly prices on eBay


Not that nuts - they are quite rare and very useful if you do a lot of
repair work.
Even the 500 series extenders go for $20-50.


Re: On screen display and other CRT items....

 

Craig,
The option is 122C and Tek calls it 'High Voltage Diode Check'. I do not
have that option on my 575 but I infer from manual that current capability
is less than 1 mA: manual recommends to set display current to 0.01mA/div
when using this option. If you really want to convert your 575, I have a
write up, but work appears quite messy. The major additions are a
transformer and sections to rotary switches and there are also some changes
to wiring.
Regards
Miroslav Pokorni

----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...>
To: <TekScopes@...>
Sent: Thursday, January 24, 2002 11:00 AM
Subject: RE: [TekScopes] On screen display and other CRT items....


I'm coming in late, so pardon if I'm responding
to a non-issue. Someone doesn't recognize the 571.
That was Tek's first transistor curve tracer.
Looks similar to its predecessor the 570 tube
curve tracer.
I think you're thinking of the 575, David. I have one just behind me as I
type. They do Tunnel Diodes too (with care), and mine will in due course
do
tubes as well (via an add-on box fed from the 175 connector on the back
and
the tranny sockets on the front). The only limitation for tubes is the
200V
maximum collector (anode) sweep. Those lucky ones who have an option (I
think 21?) have a 400V sweep, and that would clearly be even more useful.

Craig


Re: On screen display and other CRT items....

 

I have never heard of 571. But, Dave, I take exception to your leap to 576.
As a proud owner of a 575 I can not let it go by that you skip mentioning
the old transistor tracer stalwart.

Regards
Miroslav Pokorni

----- Original Message -----

From: "David Wise" <david_wise@...>
To: <TekScopes@...>
Sent: Thursday, January 24, 2002 10:34 AM
Subject: RE: [TekScopes] On screen display and other CRT items....


From: donlcramer@... [mailto:donlcramer@...]

My apologies Miroslav. Our curve tracer is I think a 576,
not a 571. A bad
I'm coming in late, so pardon if I'm responding
to a non-issue. Someone doesn't recognize the 571.
That was Tek's first transistor curve tracer.
Looks similar to its predecessor the 570 tube
curve tracer.

I used one in school, great instrument but
superseded by the 576 (smaller, looks more 7000-ish,
claims to do FETs as well as bipolars*) and I don't
know what-all since then.

* You can sort of do FETs on the 571 too, but it won't tell
you how.

Regards,
Dave Wise


Re: HP counter - off topic

 

Hello Craig,

You might want to consider using a wire-OR of 2-input open collector NANDs,
e.g. 74LS38. It is still a kludge but it is only one IC with few wires and a
flying resistor. If you place a socket on the circuit board and use one of
those 'discrete component adapters' you can do whole thing without cutting
original board.

While on the subject of strange ICs, does anyone know what are Tek's
155-0015-01 and 155-0038-01; the latter is used in 7M13, a Readout Unit, a
plug in that puts text on the screen of 7000 scope.

Regards
Miroslav Pokorni

----- Original Message -----
From: "Craig Sawyers" <c.sawyers@...>
To: <TekScopes@...>
Sent: Thursday, January 24, 2002 12:39 AM
Subject: [TekScopes] HP counter - off topic


Hi List

I *know* this is a Tek list - so this is off topic. However, I was so
pleased to have sorted out a problem on my HP 5328A timer I just had to
crow
a little.

Ever since I got it, some of the funtions didn't work well (like time
interval and ratio). However, when frequency and period measurement died
too it was clearly time to do something about it. Now this counter cost
me
???22 (around $30) on eBay, so it owed me nothing - but I'm a determined
cuss
and rarely admit defeat.

Followed around 3 days of diagnostics - derailed by errors in the manual
(the military version). Eventually it turned out to be a chip on the
Function Selector card - labelled Time Base Multiplexer. Now this was a
7454, now obsolete. So having dug out the chip, isolated the output pin
and
confirmed that it was indeed *that* chip (and not the one it was driving
holding its output low) I was then confronted with what to do.

Now the chip is a bunch of ANDs and a NOR that does /(AB + CD + EF + GH).
So it would have been possible to replace it with a 7400 and a 4-input
NOR -
except that there is no 4-input NOR in fast TTL, just in slow CMOS (and
this
chip has to handle a PLL synthesised 100MHz clock). So I transformed the
logic funtion to /(AB)./(CD)./(EF)./GH and used a 74F00 (quad 2-input
NAND)
and 74ALS21 (dual 4-input AND), strung together in place of the original
7454.

Works an absolute treat!

Cheers

Craig


Re: Silly prices on eBay

Richard W. Solomon
 

Not that nuts - they are quite rare and very useful if you do a lot of
repair work.
Even the 500 series extenders go for $20-50.

Regards,
Dick S.

-----Original Message-----
From: Craig Sawyers [mailto:c.sawyers@...]
Sent: Friday, January 25, 2002 8:51 AM
To: TekScopes@...
Subject: [TekScopes] Silly prices on eBay


This one really is nuts - 1692324316 - a Tek 7000 series card extender
closed at $162.50 after 9 bids.

Craig


Yahoo! Groups Sponsor


------------------------------------------------------------------------



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



Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.