Date   

Re: Tekwiki.org down?

Paul McClay
 

On Thu, Jan 20, 2022 at 10:08 AM, Carsten Bormann wrote:

http://tekwiki.org/ works, that redirects to w140.org, which has a valid cert.
...
Now, if you start with https://tekwiki.org/ , it breaks:
Can confirm. I wasn't conscious of that hazard. Thanks for posting.

So the target of a URL could be accessible but hidden by a combination of over-specified protocol + imperfect host maintenance. Which seems not unlikely for aging info about premillennial relics.

I wonder if that's a reason to purposefully avoid ”https://” but use ”http://”, or no scheme prefix, when making links for reference to other information. When link rot is a greater risk than fraud. ?.


just bought a 2245A scope and have a few questions...

jdm
 

hi all:

new user here. i recently retired from intel, having also worked for a couple tek spinoffs starting in 1982: Sidereal and Graphics Software Systems. i had my own contracting company '91-'95 (before joining intel) and did a few projects for tek in wilsonville.

anyway, I just bought a lightly-used 2245A for $200 and have a few questions even before it arrives next week:
- curious, about what did these cost new, starting in 1989?
- the scope is in good working order, but likely hasn't been cal'd in a while and probably not recapped in a while, either, which is probably more urgent. I have the service manual, but any tips from old pros RE what to pay extra attention to, would be very welcome. I plan to pop the case and eyeball the 'lytics when I get it, even tho it is in working condition.

why did I buy the beast? nostalgia, mostly. yes, I have a very capable digital scope, but they're just not quite as fun, IMHO, at least for the analog audio stuff I'm doing. i'll trot out the digital when I need the stuff it's good for, but I just love the organic-ness of an analog scope on analog circuits.

thanks in advance,

-- jdm


Re: Tek Lab Cart Model 3

Tomas Alori
 

The plastic parts are missing as well!


Re: Tek Lab Cart Model 3

 

Tomas,

Is it just the bar that's missing, or are you also missing the plastic parts?

-- Jeff Dutky


Re: TM5006 GPIB interface board.

Andy Warner
 

The connector I was looking at using is the NorComm part (
112-024-213R001) that
Ke-Fong suggested.
It is available, reasonably priced, and has 4-40 threaded panel mounting
screws that match the M3.5 jack-screws that are available.

https://www.norcomp.net/rohspdfs/SCSI-050Ribbon/11Y/112/112-YYY-213R001.pdf

The only differences I can see in the connector footprints between that and
the part you specified are the setback from the PCB edge and the diameter
of the PCB mounting holes.

Appreciate the offer, Jared - please only do this if you have the time to
spend for someone half a world away.
I can make/find the footprint and spin a PCB, but I'm grateful if you are
willing and able.

On Thu, Jan 20, 2022 at 10:26 AM Jared Cabot via groups.io <jaredcabot=
protonmail.com@groups.io> wrote:

I just made the gerbers tonight actually. They are a direct copy of the
Tek part (slightly modified to use the specified GPIB connector) so they
will work fine. If you want to use a different connector, link me to a
datasheet and I'll make another gerber tomorrow.

Regards,
Jared

On Fri, Jan 21, 2022 at 12:41 AM, Andy Warner wrote:


Thanks for the tried and tested gerbers, Jared - appreciate knowing I'm
nothing like the first to follow this path.

The 3M jack screw part 3341-3 also crosses to TE/AMP 5552633-3, both of
which are available - so thanks for that pointer Albert.

I can only find 4-40 / M3.5 jack screws, no 6-32 ones, so I will likely
choose a connector that has 4-40 natively, such as the NorComp part
Ke-Fong
suggested - time to check if the footprint matches the gerbers Jared
posted...

Thanks for all the info, exactly the jump start I needed, much
appreciated.

On Thu, Jan 20, 2022 at 9:10 AM Jared Cabot via groups.io <jaredcabot=
protonmail.com@groups.io> wrote:

Here's the photos and a couple gerbers of a reproduction board I
whipped
up, copied almost exactly from the board in my TM5006.
There is a PCB and a rear plate. Just order the rear plate as usual
for a
normal PCB, but choose white solder mask with black silk screen so it
looks
nice.

Use connector part number 5554923-1 for the GPIB connector (Lots at
Digikey) and a standard shrouded right-angle 20-pin 0.1" (2.54mm) pitch
rectangular connector for the other side.
You'll have to get a little creative for the standoffs, The threads in
the
connector are 6-32 UNC-2B according to the datasheet.

https://groups.io/g/TekScopes/files/TM500x%20GPIB%20Adapter%20Board

GPIB connector to use:

https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/5554923-1/1121495





--
Andy




--
Andy


Re: TM5006 GPIB interface board.

Jared Cabot
 

I just made the gerbers tonight actually. They are a direct copy of the Tek part (slightly modified to use the specified GPIB connector) so they will work fine. If you want to use a different connector, link me to a datasheet and I'll make another gerber tomorrow.

Regards,
Jared

On Fri, Jan 21, 2022 at 12:41 AM, Andy Warner wrote:


Thanks for the tried and tested gerbers, Jared - appreciate knowing I'm
nothing like the first to follow this path.

The 3M jack screw part 3341-3 also crosses to TE/AMP 5552633-3, both of
which are available - so thanks for that pointer Albert.

I can only find 4-40 / M3.5 jack screws, no 6-32 ones, so I will likely
choose a connector that has 4-40 natively, such as the NorComp part Ke-Fong
suggested - time to check if the footprint matches the gerbers Jared
posted...

Thanks for all the info, exactly the jump start I needed, much appreciated.

On Thu, Jan 20, 2022 at 9:10 AM Jared Cabot via groups.io <jaredcabot=
protonmail.com@groups.io> wrote:

Here's the photos and a couple gerbers of a reproduction board I whipped
up, copied almost exactly from the board in my TM5006.
There is a PCB and a rear plate. Just order the rear plate as usual for a
normal PCB, but choose white solder mask with black silk screen so it looks
nice.

Use connector part number 5554923-1 for the GPIB connector (Lots at
Digikey) and a standard shrouded right-angle 20-pin 0.1" (2.54mm) pitch
rectangular connector for the other side.
You'll have to get a little creative for the standoffs, The threads in the
connector are 6-32 UNC-2B according to the datasheet.

https://groups.io/g/TekScopes/files/TM500x%20GPIB%20Adapter%20Board

GPIB connector to use:

https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/5554923-1/1121495





--
Andy


Tek Lab Cart Model 3

Tomas Alori
 

Hi, I aquired a Tek Lab Cart Model 3 for my 7704A mainframe. Super rare find here in Uruguay. It is missing the 'holding bar' that holds the oscilloscope in place, however. Here is a picture of the part: https://i.imgur.com/LYWCPQp.png

Does anybody know where can I get that part from? That would complete mi 7704 + Cart setup!

Thank you!
Tomás


Re: Tekwiki.org down?

Carsten Bormann
 

On 2022-01-20, at 16:15, ken chalfant <kpchalfant@...> wrote:

FWIW I just tried tekwiki.org <http://tekwiki.org/> and it works properly for me. Mac OS Safari 12.1.2 visited at: 08:14 MST 20-JAN-2022.
http://tekwiki.org/ works, that redirects to w140.org, which has a valid cert.

$ curl -I http://tekwiki.org/
HTTP/1.1 302 Found
Location: http://w140.com/tekwiki

Now, if you start with https://tekwiki.org/, it breaks:

https://www.ssllabs.com/ssltest/analyze.html?d=tekwiki.org

Grüße, Carsten


Re: TM5006 GPIB interface board.

Andy Warner
 

Thanks for the tried and tested gerbers, Jared - appreciate knowing I'm
nothing like the first to follow this path.

The 3M jack screw part 3341-3 also crosses to TE/AMP 5552633-3, both of
which are available - so thanks for that pointer Albert.

I can only find 4-40 / M3.5 jack screws, no 6-32 ones, so I will likely
choose a connector that has 4-40 natively, such as the NorComp part Ke-Fong
suggested - time to check if the footprint matches the gerbers Jared
posted...

Thanks for all the info, exactly the jump start I needed, much appreciated.

On Thu, Jan 20, 2022 at 9:10 AM Jared Cabot via groups.io <jaredcabot=
protonmail.com@groups.io> wrote:

Here's the photos and a couple gerbers of a reproduction board I whipped
up, copied almost exactly from the board in my TM5006.
There is a PCB and a rear plate. Just order the rear plate as usual for a
normal PCB, but choose white solder mask with black silk screen so it looks
nice.

Use connector part number 5554923-1 for the GPIB connector (Lots at
Digikey) and a standard shrouded right-angle 20-pin 0.1" (2.54mm) pitch
rectangular connector for the other side.
You'll have to get a little creative for the standoffs, The threads in the
connector are 6-32 UNC-2B according to the datasheet.

https://groups.io/g/TekScopes/files/TM500x%20GPIB%20Adapter%20Board

GPIB connector to use:

https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/5554923-1/1121495





--
Andy


Re: Tekwiki.org down?

ken chalfant
 

Greetings,

FWIW I just tried tekwiki.org <http://tekwiki.org/> and it works properly for me. Mac OS Safari 12.1.2 visited at: 08:14 MST 20-JAN-2022.

Regards,

Ken

On 19Jan, 2022, at 10:58 PM, Bruce Lane <kyrrin@...> wrote:

Well... I couldn't get to tekwiki.org for some reason (something about a security certificate). However, I have uploaded the TDS field adjustment software collection I have to KO4BB's site. I don't know how long it'll take Didier to make it available, but at least he has it as well.

Keep the peace(es).

--
Bruce Lane, ARS KC7GR
kyrrin@...
"Quando Omni Flunkus Moritati" (Red Green)






Re: TM5006 GPIB interface board.

Jared Cabot
 

Here's the photos and a couple gerbers of a reproduction board I whipped up, copied almost exactly from the board in my TM5006.
There is a PCB and a rear plate. Just order the rear plate as usual for a normal PCB, but choose white solder mask with black silk screen so it looks nice.

Use connector part number 5554923-1 for the GPIB connector (Lots at Digikey) and a standard shrouded right-angle 20-pin 0.1" (2.54mm) pitch rectangular connector for the other side.
You'll have to get a little creative for the standoffs, The threads in the connector are 6-32 UNC-2B according to the datasheet.

https://groups.io/g/TekScopes/files/TM500x%20GPIB%20Adapter%20Board

GPIB connector to use:
https://www.digikey.com/en/products/detail/te-connectivity-amp-connectors/5554923-1/1121495


Re: TM500-series extender ?

 

I agree 100%, a TM502A without the cover IS the perfect fix for doing TM500 module repairs, it's what I use
when I have to do any serious module work. I also have extenders for quick adjustments,
so some choices are very useful.

I do have a couple of the Tek frame mating connectors left if anybody needs one for an extender.

all the best,
walter (walter2 -at- sphere.bc.ca)
sphere research corp.


Tek 603 tub smashed during transport - new tube wanted!

Mattis Lind
 

I tried to buy a Tek 603 over Ebay but it unfortunately was broken during transport. Not much visible damages to the parcel though but nevertheless the neck was broken off.

Anyone has a spare tube 154-0634-10 but I think any tube 154-0634-xx would be fine since I guess that the xx isjust the phosphor type.

I think that the same tube can be found in Tek 5111 if anyone has a parts-5111 that could donate a tube.

/Mattis


Re: TM5006 GPIB interface board.

Ke-Fong Lin
 

Thanks for the pointer to a non-expensive right-angle connector.
I made a mistake, for the TM5006, that should be part 112-024-213R001, the "female" version of the connector.
As for the screws, "jack screws" will probably do. And in a hobby/bench environment, it's not critical to secure everything with screws.


Re: Does anyone have any TDS500/600/700 Software?

 

On Wed, Jan 19, 2022 at 10:03 AM, Jared Cabot wrote:


I'm interested in any software at all for these machines
Does that include only official Tek softwares ?
If not these might be of interest:
http://www.hakanh.com/dl/TDSErrLog.htm
http://www.hakanh.com/dl/TDS_pv.htm

/Håkan


Re: TM500-series extender ?

 

TM502, TM501... you can even use a TM503!!

A bit more bulky, of course, but no need to cut down anything. I often use the rails to stabilize my hands when probing components.

cheers
Martin


Re: TM5006 GPIB interface board.

Albert Otten
 

On Thu, Jan 20, 2022 at 12:02 AM, Andy Warner wrote:


The available connectors themselves all seem to have threads that are not
M3.5, meaning that I either need to drill them out, or use standoffs with
an inch male thread and a metric female thread. I was asking if there was a
well known source of those, instead of drilling the connector.
Perhaps suggested already: 3M 3341-3. I used these "jack screws" (called so by Farnell) in my P7001 GPIB project.
Albert


Re: TM5006 GPIB interface board.

Jared Cabot
 

I have three TM5006 mainframes here, I haven't checked if they have the GPIB boards, and I unfortunately can't offer any boards for sale, but I can take some high resolution photos to upload to the TekWiki if that will help, once I have my desk cleared of the PC I'm currently repairing.


Re: Tekwiki.org down?

Jean-Paul
 

Bonjour, All SSL certs expire periodically. These is a bug in the timing of many browser that do not account for the expiration and renewal in every time zone.

At 08.30 GMT Tekwiki.org works fine.

Most browsers warn if a new or changed SSL cert is used in an HTTPS site.

You just accept the new cert if you trust the site.

My site host i the horrible SITE5 and this happens to our site every 60 days!

A note to the site admin to renew the SSL cert usually solves this.

Jon


Re: Which deserves to live, 2445 or 2465?

Don N3DEB
 

Upon checking my 2445 it has 155-0241-02 and my 2465 155-0241-01.
Deal killer?

4101 - 4120 of 193792