Date   
Re: Anyone have a Tek 555 interconnection cable for sale

Matt Russell
 

WIDGETHUNTER
I think I would be interested in the cable, what is the cost of your plug? I know some are selling them at " DEFENSE CONTRACT" pricing as one person on here had stated. I just gotta see if I can afford the asking price. Thank you very much for all the help

Re: Anyone have a Tek 555 interconnection cable for sale

Andre de guerin
 

Will check here.

On Friday, 1 February 2019, 22:47:43 GMT, Matt Russell <statesomattr@...> wrote:

I am happy to pay you. I am stressing about having to do anything other then what is in the units design! I really want to get this thing up and running and would be very grateful if you indeed have one that you can send my way! Thank you for your time  and help with this mater

CG5011 (sans head) spotted on eBay at $25 (so far).

 

7854 - yet another problem

 

The 7854 I'm trying to resurrect has a problem where the readout starts to
flicker a lot after it has been on for a short while.

If I them power off and power on I see all vertical mode lights on and CHOP
and B lit in the horizontal mode lights. This I understand is a "Real time
clock" failure.

So where do I find the darn RTC so I can try to fix it - a quick scan of the
friendly service manual didn't lead me to it ...

Thanks
Dave

Re: 7854 - yet another problem

Harvey White
 

On Sun, 3 Feb 2019 19:00:50 -0000, you wrote:

The 7854 I'm trying to resurrect has a problem where the readout starts to
flicker a lot after it has been on for a short while.

If I them power off and power on I see all vertical mode lights on and CHOP
and B lit in the horizontal mode lights. This I understand is a "Real time
clock" failure.

So where do I find the darn RTC so I can try to fix it - a quick scan of the
friendly service manual didn't lead me to it ...
If this is like some of the others, the CPU doesn't have an RTC
module, too old for that. I'd look for the battery, but I suspect you
may have a dallas RAM/ROM buried in there, some of them have/had RTC
modules.

Harvey


Thanks
Dave



3 more improved SG504 Leveling heads online now

 

Hi all:
3 more of my stub tuned SG 504 leveling heads are for up for sale on EBAY.
https://www.ebay.com/itm/132801983494

Thx
Ancel

Re: 3 more improved SG504 Leveling heads online now

Bruce Lane
 

...And I just bought one. Although I already have an 'official' Tek
leveling head for mine, I can't rule out the possibility of needing a
spare (or, simply, a more accurate version of the official head).

Thanks much!

On 03-Feb-19 13:51, Ancel wrote:
Hi all:
3 more of my stub tuned SG 504 leveling heads are for up for sale on EBAY.
https://www.ebay.com/itm/132801983494

Thx
Ancel
--
---
Bruce Lane, ARS KC7GR
http://www.bluefeathertech.com
kyrrin (at) bluefeathertech dot com
"Quando Omni Flunkus Moritati" (Red Green)

Re: Lots of literature on website

scskits
 

go up one level for more tektronix info, and up one more to get to information from other manufacturers.

Re: Lots of literature on website

John Williams
 

OMG I am blown away by the amount of material on that site. I think it surpasses BAMA even, at least for Tek. Thanks for the heads up. John

TDS 500 600 700 series calibration

Dan Fish
 

I used to calibrate the 500MHz scopes but got rid of the AT PC and GPIB card. Still have the TM500 series plugins in the equipment list. Recently bought a TDS 584 (1GHz) with a bad display, crinkled gel between color shutter and front glass. Fixed that by removing gel. Found I could pull a length of wire (jacketed) between the layers to separate for cleaning. After display fixed found that a previous owner had thrown #3 dip switch to skip processor tests at turn on. This masks the calibration failure due to Dallas NVROM battery run down. So I have a
nice pristine 1GHz DSO brick. I do have ability to copy the NVROM and put in a fresh one.

Does anyone know if the calibration procedure and equipment list for the 1GHz scopes is the same as the one I am familiar with for the 500 MHz scopes? I need to make a decision to gear up again for calibration or just put it up for sale.

Thanks, Dan

Re: TDS 500 600 700 series calibration

Mark Goldberg
 

On Sun, Feb 3, 2019 at 9:56 PM Dan Fish <defish1@...> wrote:

I used to calibrate the 500MHz scopes but got rid of the AT PC and GPIB
card. Still have the TM500 series plugins in the equipment list. Recently
bought a TDS 584 (1GHz)

Does anyone know if the calibration procedure and equipment list for the
1GHz scopes is the same as the one I am familiar with for the 500 MHz
scopes? I need to make a decision to gear up again for calibration or
just put it up for sale.

Have you checked with any calibration labs? I have a modern MDO3024 scope
and the calibration is apparently fully automated. Cost is only $134 for an
accredited local third party lab to do it and provide me a cal sticker. My
HP 8642A signal generator costs more than twice as much to calibrate. I
believe much more labor is required. Maybe this scope is new enough to be
easy and not too expensive to calibrate.

Regards,

Mark

Re: TDS 500 600 700 series calibration

Stephen Hanselman
 

Since I still calibrate the 540 series I have the software up and running, I don’t think the software supports the 584 but I will check on Monday

Regards,

Stephen Hanselman
Datagate Systems, LLC
3107 North Deer Run Road #24
Carson City, Nevada, 89701
(775) 882-5117 office
(775) 720-6020 mobile
s.hanselman@...
www.datagatesystems.com
a Service Disabled, Veteran Owned Small Business
DISCLAIMER:
This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.

On Feb 3, 2019, at 21:13, Mark Goldberg <marklgoldberg@...> wrote:

On Sun, Feb 3, 2019 at 9:56 PM Dan Fish <defish1@...> wrote:

I used to calibrate the 500MHz scopes but got rid of the AT PC and GPIB
card. Still have the TM500 series plugins in the equipment list. Recently
bought a TDS 584 (1GHz)

Does anyone know if the calibration procedure and equipment list for the
1GHz scopes is the same as the one I am familiar with for the 500 MHz
scopes? I need to make a decision to gear up again for calibration or
just put it up for sale.

Have you checked with any calibration labs? I have a modern MDO3024 scope
and the calibration is apparently fully automated. Cost is only $134 for an
accredited local third party lab to do it and provide me a cal sticker. My
HP 8642A signal generator costs more than twice as much to calibrate. I
believe much more labor is required. Maybe this scope is new enough to be
easy and not too expensive to calibrate.

Regards,

Mark


Re: TDS 500 600 700 series calibration

Stephen Hanselman
 

Mark unfortunately the TDS 5,6,7 series while purporting to allow a full automated alignment. The software calls out a voltage standard and a SG 504 and 505. None of which are remote controllable.

Regards,

Stephen Hanselman
Datagate Systems, LLC
3107 North Deer Run Road #24
Carson City, Nevada, 89701
(775) 882-5117 office
(775) 720-6020 mobile
s.hanselman@...
www.datagatesystems.com
a Service Disabled, Veteran Owned Small Business
DISCLAIMER:
This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.

On Feb 3, 2019, at 21:13, Mark Goldberg <marklgoldberg@...> wrote:

On Sun, Feb 3, 2019 at 9:56 PM Dan Fish <defish1@...> wrote:

I used to calibrate the 500MHz scopes but got rid of the AT PC and GPIB
card. Still have the TM500 series plugins in the equipment list. Recently
bought a TDS 584 (1GHz)

Does anyone know if the calibration procedure and equipment list for the
1GHz scopes is the same as the one I am familiar with for the 500 MHz
scopes? I need to make a decision to gear up again for calibration or
just put it up for sale.

Have you checked with any calibration labs? I have a modern MDO3024 scope
and the calibration is apparently fully automated. Cost is only $134 for an
accredited local third party lab to do it and provide me a cal sticker. My
HP 8642A signal generator costs more than twice as much to calibrate. I
believe much more labor is required. Maybe this scope is new enough to be
easy and not too expensive to calibrate.

Regards,

Mark


Re: 3 more improved SG504 Leveling heads online now

tekscopegroup@...
 

Just to understand, the function of this head is to level off any output variations that the generator might have in its frequency range? Will this work on other generators with 50 ohms output, or only specifically for the SG504? Thanks.
Alex

Inappropriate language

 

Our archives are readable by members of the general public. Recently a
message was posted with inappropriate language that is not a reflection of
the other 7,500 members of TekScopes. The individual who posted this message
was warned previously about similar posts but did it anyway.



I have taken the extraordinary step of deleting his message from the
archives, and removing this members posting privileges and daily summaries.
Additional messages by other members that quote or refer directly to the
language in the original post will also be deleted from the archives.



TekScopes Group Description is:

"All about classic Tektronix test equipment, its use, repair, and
collecting."



This would be a good time to remind everyone of what TekScopes is not about.
Inappropriate language and posts about the following topics were best stated
by Stefan Trethan who said it better than I could:



"No politics, no religion, no sports, simple as that. This has been the
golden rule for groups for a long time, because it works."



My apologies go out to all of the TekScopes members who received the
original post before it could be removed from our site.



Dennis Tillman W7PF

Re: TDS 500 600 700 series calibration

Stephen Hanselman
 

I don't have a definitive answer for you, both the 063-2774-01 and 063-3289-01 discs have an "IDX" file for the TDS 580C and TDS580 C&D respectively. They also have a specific file for the 784. The software is fairly parochial about talking to the proper model so I just don't know, but maybe.....

If you know anything about the innards of the software that would be a big help.

Steve

-----Original Message-----
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Mark Goldberg
Sent: Sunday, February 3, 2019 9:13 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] TDS 500 600 700 series calibration

On Sun, Feb 3, 2019 at 9:56 PM Dan Fish <defish1@...> wrote:

I used to calibrate the 500MHz scopes but got rid of the AT PC and
GPIB card. Still have the TM500 series plugins in the equipment list.
Recently bought a TDS 584 (1GHz)

Does anyone know if the calibration procedure and equipment list for
the 1GHz scopes is the same as the one I am familiar with for the 500 MHz
scopes? I need to make a decision to gear up again for calibration or
just put it up for sale.

Have you checked with any calibration labs? I have a modern MDO3024 scope and the calibration is apparently fully automated. Cost is only $134 for an accredited local third party lab to do it and provide me a cal sticker. My HP 8642A signal generator costs more than twice as much to calibrate. I believe much more labor is required. Maybe this scope is new enough to be easy and not too expensive to calibrate.

Regards,

Mark

Re: TDS 500 600 700 series calibration

Stephen Hanselman
 

I keep wondering about the actual use of the NVRAM on the control PCA in these scopes. I have been extracting the NVRAMS and reading them so I have a fair selection on the dumps. I have run the units without the NVRAM (except the ones that have the Timekeeper/NVRAM and they seem to function fine. However I have moved an initialized(cold start) Acquisition pca between units and the "initialized" status follows the Acq pca. I wonder if the cal data is really stored in the NVRAM. From looking at the dumps it looks to be used mostly for storing screen grabs.

Having said that I could be way off base

Regards,

Stephen Hanselman
Datagate Systems, LLC
3107 North Deer Run Road #24
Carson City, Nevada, 89701
(775) 882-5117 office
(775) 720-6020 mobile
s.hanselman@...
www.datagatesystems.com
a Service Disabled, Veteran Owned Small Business
DISCLAIMER:
This e-mail and any attachments are intended only for use by the addressee(s) named herein and may contain legally privileged and/or proprietary information. If you are not the intended recipient, any dissemination, distribution or copying of this e-mail and any attachments is strictly prohibited. If you have received this e-mail in error, please immediately notify me and permanently delete the original and all copies and printouts of this e-mail and any attachments.

-----Original Message-----
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of Dan Fish
Sent: Sunday, February 3, 2019 8:56 PM
To: TekScopes@groups.io
Subject: [TekScopes] TDS 500 600 700 series calibration

I used to calibrate the 500MHz scopes but got rid of the AT PC and GPIB card. Still have the TM500 series plugins in the equipment list. Recently bought a TDS 584 (1GHz) with a bad display, crinkled gel between color shutter and front glass. Fixed that by removing gel. Found I could pull a length of wire (jacketed) between the layers to separate for cleaning. After display fixed found that a previous owner had thrown #3 dip switch to skip processor tests at turn on. This masks the calibration failure due to Dallas NVROM battery run down. So I have a nice pristine 1GHz DSO brick. I do have ability to copy the NVROM and put in a fresh one.

Does anyone know if the calibration procedure and equipment list for the 1GHz scopes is the same as the one I am familiar with for the 500 MHz scopes? I need to make a decision to gear up again for calibration or just put it up for sale.

Thanks, Dan

Re: Inappropriate language

Dave Daniel
 

Dennis,

Thank you.

Dave

Sent from a small flat thingy

On Feb 4, 2019, at 13:07, Dennis Tillman W7PF <@Dennis_Tillman_W7PF> wrote:

Our archives are readable by members of the general public. Recently a
message was posted with inappropriate language that is not a reflection of
the other 7,500 members of TekScopes. The individual who posted this message
was warned previously about similar posts but did it anyway.



I have taken the extraordinary step of deleting his message from the
archives, and removing this members posting privileges and daily summaries.
Additional messages by other members that quote or refer directly to the
language in the original post will also be deleted from the archives.



TekScopes Group Description is:

"All about classic Tektronix test equipment, its use, repair, and
collecting."



This would be a good time to remind everyone of what TekScopes is not about.
Inappropriate language and posts about the following topics were best stated
by Stefan Trethan who said it better than I could:



"No politics, no religion, no sports, simple as that. This has been the
golden rule for groups for a long time, because it works."



My apologies go out to all of the TekScopes members who received the
original post before it could be removed from our site.



Dennis Tillman W7PF







Re: 46x Analogue Storage Calibration

Fabio Trevisan
 

Hello Colin,
I won't be able to help you, but I join you in your frustration.
While trying to calibrate my 464, I had exactly same feelings and frustration about the instructions (and by just looking to the samples you given, it seems the instructions for the 464 were very similar to yours).
My 464's CRT was clearly worn-out so, at some point I realized I would never be able to get the Fast storage up "to spec" so I eventually gave up. Eventually I adjusted it the best that I could and gave it to a friend of mine.
Like you, I also noticed a gross mismatch between the pre-adjustments that were asked for the Front Mesh and Fast prep, and the final adjustments that can get you to a minimally operating Var Persistence mode.
When you start fiddling with the adjustments... (and only a few of them are relevant to the Var Persistent mode, which limits drastically the number of possible combinations), soon enough you realize that that the only possible settings to those adjustments to get the Var Persistence working at least minimally, completely disagree to the initial settings, so.... couldn't ever understand the rational of it all.

Back then I also asked for advice from anyone in the group who had practical experience on calibrating those beasts, and no heads up...Seem like not much people is familiar with this calibration procedure.

Since my CRT was so worn out, I was never able to tell if all the disagreements I was seeing was because the CRT was way off the specs... or if I just couldn't get the instructions right...

That's not to say your CRT is worn out... I suppose that if yours is so worn-out as mine was, you would know it "on-the-spot". On mine, trace was very dim at 50ns/div, and if I would use at 5ns (x10 engaged), I could only see the trace under complete darkness (and yet, quite dim).
So, if your CRT is not worn out, and you're still seeing the same inconsistencies that I saw during calibration, it probably means that either both our scopes share a similar defect, or that the instructions really don't make sense.

I wish I could help you more (by comparation of results) but I don't have the scope anymore.

Rgrds,

Fabio

Re: TDS 500 600 700 series calibration

 

On Mon, Feb 4, 2019 at 07:25 PM, Stephen Hanselman wrote:


I wonder if the cal data is really stored in the NVRAM. From looking at the
dumps it looks to be used mostly for storing screen grabs.
As far as I know they are in flash ROM on the Acq board and other than screen grabs
(or Waveforms) the NVRAM also contains stored settings.

/Håkan