Date   

Re: Tek 2467b test 05 error

Chuck Harris
 

And my apologies for getting hot under the collar.

-Chuck Harris

Sscandizzo@... wrote:

My apologies, Chuck. Consider the behavior corrected.

-Stefan


Re: Tek 2467b test 05 error

Sscandizzo@...
 

My apologies, Chuck. Consider the behavior corrected.

-Stefan


Re: 310A scope : serial number oddity ? Ideas ?

Vincent Trouilliez
 

On Sun, Aug 26, 2018 at 08:03 AM, Artekmedia wrote:

The serial number location  key is in the 2nd or 3rd page of the Instruction or Service manual.
Thanks. Had a look at my 310A and 317 and 2232 manual, no luck there. However n my 5111A manual, indeed on the second page it gives a list :

B : Beaverton
1 : Guernsey, Channel Islands
2 : The UK
3 : Tektronix / Sony, Japan
7 : Holland / The Netherlands

Also, unless there is a typo on this manual, it looks like US units had a 6 digits SN when all other/foreign plants used only 5 digits number.
Which seems odd since there is a single S sequence common to all plants, from what I understand (the part list changes imply so, anyway, they only give SN )

Still doesn't say what '0' means, though. Maybe some manual does tell....

It is not uncommon for European built units to have slight circuit and mechanical differences compared to the their USA half brothers.
Ah, OK. Thanks for that. There is no mystery left about my scope's SN then, all sorted.... :-)


Vincent Trouilliez


Re: 310A scope : serial number oddity ? Ideas ?

Vincent Trouilliez
 

On Sun, Aug 26, 2018 at 07:45 AM, Dave Daniel wrote:

My 310A has serial number 015467 and was made for or customized for IBM
What does the zero in the S/N mean as far as here it was built? I might assume that "0" indicates Beaverton.
Interesting. Yeah if it's for IBM I guess it was made in the US, so Beaverton. Maybe the '0' was used for custom built equipment that was only sold to a particular customer and therefore didn't make it to the general products catalog...


Also, where do y'all get the information about serial number dating? From the service manual?
Yes.If you look at any Tek parts list (be it electrical or mechanical), for each individual component, if there has been a change at some point, you will have two consecutive lines for the same component designator. Each line specifies the SN range for which it is valid.



Vincent Trouilliez


Re: 310A scope : serial number oddity ? Ideas ?

ArtekManuals
 

The serial number location  key is in the 2nd or 3rd page of the Instruction or Service manual. Not all manuals contain all serial number location keys. Some manuals have no serial location key at all. there is every possible permutation and combination you can think of.

It is not uncommon for European built units to have slight circuit and mechanical differences compared to the their USA half brothers. In many cases (but not always) a separate  European manual was printed. At least over here on the west shore of the pond European printed manuals are relatively rare. Most of the digital copies of Tektronix manuals you will find are scanned from the USA version (including 99.8% of the ArtekManuals.com manuals). This is a sheer function of the number of units loose in the wild over here compared to Europe

Dave
manuals@...

On 8/26/2018 10:45 AM, Dave Daniel wrote:
My 310A has serial number 015467 and was made for or customized for IBM (I think this mostly meant that some special accessories were made available; mine came with a leather carrying case and a probe selector).

What does the zero in the S/N mean as far as here it was built? I might assume that "0" indicates Beaverton.

Also, where do y'all get the information about serial number dating? From the service manual?

Thanks

DaveD


On 8/26/2018 5:31 AM, David C. Partridge wrote:
Yes, Guernsey plant serial numbers start with a 1

Dave

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Vincent Trouilliez
Sent: 26 August 2018 03:52
To: TekScopes@groups.io
Subject: [TekScopes] 310A scope : serial number oddity ? Ideas ?

Hi Gents,

So is the leading " 1 " a valid plant number ?




--
Dave
Manuals@...
www.ArtekManuals.com


Re: 310A scope : serial number oddity ? Ideas ?

Dave Daniel
 

My 310A has serial number 015467 and was made for or customized for IBM (I think this mostly meant that some special accessories were made available; mine came with a leather carrying case and a probe selector).

What does the zero in the S/N mean as far as here it was built? I might assume that "0" indicates Beaverton.

Also, where do y'all get the information about serial number dating? From the service manual?

Thanks

DaveD

On 8/26/2018 5:31 AM, David C. Partridge wrote:
Yes, Guernsey plant serial numbers start with a 1

Dave

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Vincent Trouilliez
Sent: 26 August 2018 03:52
To: TekScopes@groups.io
Subject: [TekScopes] 310A scope : serial number oddity ? Ideas ?

Hi Gents,

So is the leading " 1 " a valid plant number ?


Re: Tek 2467b test 05 error

Chuck Harris
 

Just in case anyone wonders: Every time those of you that use
the groups.io website to post, post, and then see a mistake and
edit your post, and submit that change, and see a mistake and
edit your post, and submit that change, and see an error and
edit your post, and submit that change, and seen another error
and edit your post, and submit that change...

We who get this group by email, which is virtually all of us,
get another nearly identical copy of your post, with the words
[Edited Message Follows] affixed to the top.

Food for thought.

-Chuck Harris

Sscandizzo@... wrote:

[Edited Message Follows]

Hi Guys,

Update time. Finally got in (stripped torx heads are no fun - drilled it out.)

I went to J119 and checked the voltages. Two points failed:
J119-5 (-4.965 to -5.035) measured -4.53
J119-11 (-7.88 to -8.12) measured -6.30

To answer Siggi's question, I'm comfortable around old computers (6504's and 8086/88's) and replacing both chips and discrete components.

I don't think I am properly measuring total p-p ripple; my values seem significantly less than (a factor of 10) the tolerances. AND I have no clue how to measure the p-p at 2x line frequency. I suspect it's obvious, but I'm at a total loss.

All the boards appear to be from 1987 and populated with late '88 chips & hybrids. Not a single smd to be found (correction, a small daughter card about 0.5" x 2" near the top right of the main board).

-Stefan




Re: 310A scope : serial number oddity ? Ideas ?

Vincent Trouilliez
 

Thanks Dave.

So my scope is indeed SN 1239, very early unit then, and should have therefore come with UHF not BNC... or maybe the plant manager in Guernsey decided on his own to switch early to BNC because he felt BNC was in wider use in Europe at the time, than it was in the US at the same period. Who knows...



Vincent Trouilliez


Re: Looking for ...

Vintage Test
 

I scrapped a couple of 7603s a while ago and think I probably have the HT modules in my spares bin. Let me confirm this and I’ll contact you tomorrow.

Cheers,
Mel
--
you can never have enough oscilloscopes, DMMs, valve testers or soldering irons . . .


Re: scanned: Common Parts Design Catalog #6, Wire, Insulation, and Power Supplies, May 1988

 

I uploaded all of them to ko4bb.com so you'll find them there... Most are in the Tektronix directory, some may still be in the recent uploads directory.

Dave

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Gary Robert Bosworth
Sent: 26 August 2018 04:16
To: TekScopes@groups io
Subject: Re: [TekScopes] scanned: Common Parts Design Catalog #6, Wire, Insulation, and Power Supplies, May 1988

Please tell me a web address where I can see all of these catalogs listed.
Thank you.

Gary

On Fri, Aug 24, 2018 at 3:27 PM Dennis Tillman W7PF <@Dennis_Tillman_W7pF>
wrote:

Hi Leon,

Originally Tek produced 6. If you look at the back cover of the bound ones
it shows abbreviated contents for each of the six.

I have been told by one person that at some later date Tek produced a 7th
one but I haven't seen it.

They were not published at the same time as a set, but rather individually
as necessary. So the dates on them are usually different. I do not know if
newer dated ones eliminated parts from earlier ones that might be obsolete
at the time it was created. If that is the case then it would be valuable
to find as many older versions of these parts catalogs to give us all the
information possible to use when tracking down part numbers.

Dennis Tillman W7PF


-----Original Message-----
From: Leon Robinson
Sent: Thursday, August 23, 2018 6:59 PM

Kurt,
I'm curious how many of these Catalogs are there?
Leon Robinson K5JLR



--
Dennis Tillman W7PF
TekScopes Moderator



--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247


Re: 310A scope : serial number oddity ? Ideas ?

 

Yes, Guernsey plant serial numbers start with a 1

Dave

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Vincent Trouilliez
Sent: 26 August 2018 03:52
To: TekScopes@groups.io
Subject: [TekScopes] 310A scope : serial number oddity ? Ideas ?

Hi Gents,

So is the leading " 1 " a valid plant number ?


Re: 7000 series white plug-in connector

Vintage Test
 

Hi Jim,

I scrapped a couple of 7603s a while ago and still have the rear interface panels (with connectors), which you’re welcome to. I’m in Scotland, where are you?

Cheers,
Mel

--
you can never have enough oscilloscopes, DMMs, valve testers or soldering irons . . .


Re: scanned: Common Parts Design Catalog #6, Wire, Insulation, and Power Supplies, May 1988

Gary Robert Bosworth
 

Please tell me a web address where I can see all of these catalogs listed.
Thank you.

Gary

On Fri, Aug 24, 2018 at 3:27 PM Dennis Tillman W7PF <@Dennis_Tillman_W7pF>
wrote:

Hi Leon,

Originally Tek produced 6. If you look at the back cover of the bound ones
it shows abbreviated contents for each of the six.

I have been told by one person that at some later date Tek produced a 7th
one but I haven't seen it.

They were not published at the same time as a set, but rather individually
as necessary. So the dates on them are usually different. I do not know if
newer dated ones eliminated parts from earlier ones that might be obsolete
at the time it was created. If that is the case then it would be valuable
to find as many older versions of these parts catalogs to give us all the
information possible to use when tracking down part numbers.

Dennis Tillman W7PF


-----Original Message-----
From: Leon Robinson
Sent: Thursday, August 23, 2018 6:59 PM

Kurt,
I'm curious how many of these Catalogs are there?
Leon Robinson K5JLR



--
Dennis Tillman W7PF
TekScopes Moderator



--
Gary Robert Bosworth
@grbosworth
Tel: 310-317-2247


310A scope : serial number oddity ? Ideas ?

Vincent Trouilliez
 

Hi Gents,

Just got meself a 310A, such a cute little thing, I just love it :-)

I have only just received/unpacked it today, but I noticed immediately something a bit odd/weird regarding its serial number, maybe the grey beards among you can shed some light :-)

Here goes : the SN on the face plate of the scope is a 6 character string : 101239
I thought the first character was supposed to be a letter, which indicates the manufacturing plant, B for Beaverton/US, and I don't know the other codes...

So is the leading " 1 " a valid plant number ? According to the face plate, the scope was made in Europe/Guernsey plant (makes sense, I am in France).
So is Guernsey coded with a " 1 ", a digit, rather than a letter ? Sounds a bit odd to me no ? Confusing at the least..

Also : my scope comes with a "modern" BNC connector rather than the old style UHF, which means it must be fairly recent, mid -60's or so, right ?
My problem : in the mechanical parts list of the 310A service manual, it does specify the change point for the UHF/BNC thing. BNC were fitted starting with SN 19120.

All the SNs I see in the service manual are 5 digits not 6. So this means the leading ' 1 ' in my SN should be discarded, so I am left with " 01239 ", or 1239, which is a very low SN and therefore the scope should have come with a UHF connector not BNC. I doubt anyone would have bothered retrofitting a BNC connector ?!....

Sorry for thinking out loud.. to sum it up :

- Is ' 1' a valid code for Guernsey plant ? If not, how to make sense of my SN ?
- How comes the scope was fitted with a BNC if its SN is as low as (0)1239 ?

I am trying to make sense of all this, but it all looks a bit weird... help ! :-)


Regards,

Vincent Trouilliez


Re: 7000 series white plug-in connector

Dave Seiter
 

I had to laugh, that is so true!





I third the JB Weld. That stuff could hold the space shuttle together.


Re: Tek 2467b test 05 error

Sscandizzo@...
 
Edited

Gotcha, stereo vision has it's advantages. I was starring right at them but couldn't see the pins!

They are both spot on.
TP2420 1.362
TP2421 -1.250


Re: Tek 2467b test 05 error

Siggi
 

On Sat, Aug 25, 2018 at 17:12 <Sscandizzo@...> wrote:

Thanks, Siggi.

What points should I use to find the reference voltages?

This may take some hunting, depending on your A5 board version. On some
they’re brought out to TP2420 and TP2421, on others you may need to find
them on the schematic and measure on a suitable pin.


Re: Tek 2467b test 05 error

Sscandizzo@...
 

Thanks, Siggi.

What points should I use to find the reference voltages?

-Stefan


Re: Tek 2467b test 05 error

Siggi
 

On Sat, 25 Aug 2018 at 16:15 <Sscandizzo@...> wrote:

I went to J119 and checked the voltages. Two points failed:
J119-5 (-4.965 to -5.035) measured -4.53
J119-11 (-7.88 to -8.12) measured -6.30
Oh, goody, maybe you just have some power supply issues to work through.


I don't think I am properly measuring total p-p ripple; my values seem
significantly less than (a factor of 10) the tolerances.

Is this using the settings specified in the service manual (see below)?

AND I have no clue how to measure the p-p at 2x line frequency. I suspect
it's obvious, but I'm at a total loss.
The service manual specifies using a 1X probe, AC coupling, 2mV/DIV, LINE
trigger, 5ms/DIV and 20MHz bandwidth limit on. This is what the LINE
trigger is for, pretty much, this way the ripple on the rail will stand
still on your trace.
I'm guessing total ripple would be the largest excursions you see on an
analog scope of the time - not sure how to reproduce that on your cheap
digital scope :).


All the boards appear to be from 1987 and populated with late '88 chips &
hybrids. Not a single smd to be found (correction, a small daughter card
about 0.5" x 2" near the top right of the main board).
I've never heard of the DAC reference going bad in anything but the SMD
version of the A5 board, so scrap that whole angle :).
You still may want to measure the 1.36 & -1.25V reference voltages, as they
can indicate trouble elsewhere as well.


Re: Tek 2467b test 05 error

Sscandizzo@...
 
Edited

Hi Guys,

Update time. Finally got in (stripped torx heads are no fun - drilled it out.)

I went to J119 and checked the voltages. Two points failed:
J119-5 (-4.965 to -5.035) measured -4.53
J119-11 (-7.88 to -8.12) measured -6.30

To answer Siggi's question, I'm comfortable around old computers (6502's and 8086/88's) and replacing both chips and discrete components.

I don't think I am properly measuring total p-p ripple; my values seem significantly less than (a factor of 10) the tolerances. AND I have no clue how to measure the p-p at 2x line frequency. I suspect it's obvious, but I'm at a total loss.

All the boards appear to be from 1987 and populated with late '88 chips & hybrids. Not a single smd to be found (correction, a small daughter card about 0.5" x 2" near the top right of the main board).

-Stefan