Date   

8568b YTO problem

Bill Riches
 

I have three 8568B SAs. One works fine, the other two have the same
problem.



8568B - 2503A01022.



Test FX = 441.0 Mhz -10db. (freq and cal readout are right on)



Span 1 Mhz ok - no jitter (pic 1mhz)

Span 1.1 Mhz - jitter (pic 1.1 Mhz) (no YTO Icon)

Span 20.0 no jitter

Span 20.1 Jitter and YTO icon. (pic 20.1Mhz)



https://www.dropbox.com/sh/nescko2lr1rymwu/AADlF682G54OGdOdHHDHFnrZa?dl=0



Pictures are on my dropbox - taken with Trace in "Max Hold" to show width
of jitter.



I have the complete set of manuals - Troubleshooting and performance tests.



Any suggestions on what section to start?



Any help would be appreciated!



73,



Bill, WA2DVU


Need to borrow 5L4N and 7L18 manuals to scan

Artekmedia <manuals@...>
 

HNY everyone !

I am looking for service manuals for the 5L4N and 7L18 spectrum analyzer plug-ins for the 5000 and 7000 series scopes respectively. What I need are the final full release versions of these service manuals. There are free downloads out there that of the "PRELIMINARY"  service manuals of both these units . I have my own scan of the prelim 7L18 and there is a copy of the prelim 5L4N on one of the better known free download sites. PLEASE DO NOT POINT ME AT THESE !  What I need is a OEM Paper copy of the full up final release of the manuals. I would like to borrow these to scan with the carrot of providing  a couple of free downloads from our web site as payment for the favor. In 18 years of doing this I have never lost or damaged a loaner manual so this should be a low risk proposition. Depending on your current point of view I am fortunately or unfortunately located in the USA so offers to loan me a manual if you live outside the USA while appreciated in sentiment are not financially practical.

May the gods of stagnate water smile favorably upon all of you and your offspring in the year to come

-DC
manuals@artekmanuals.com

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


7704A Mainframe Panel Lights No-Op

k6whp
 

(seems like this guy is rebelling against me or is deteriorating.)

The panel light for the controls in the front middle of the mainframe are dead. That is the button lights for the Vertical and Horizontal Mode buttons have gone out. (Scope still works.) Additionally, the A and B trigger Source lights no longer work as well. Before some worked and some did not. Now the whole thing is dark.

In looking at the service manual, I stumbled onto page 6-3 and note that there are four boards ("board 11", "board 12", "board 13", "board 14" which are Vertical Mode, Horizontal Mode, A Trigger Source, and B Trigger Source respectively.) and each of these is supplied with a "+5V Lights" source from the Calibrator Board 10 but the schematic shows no originating source and I have not been inside the uni yet to see what's what.

Anyone troubleshoot this problem and can offer advise and information?

Thanks in advance.
--
William, k6whp
"A friend told me to cheer up, things could be worse.
So I cheered up and, sure enough, things got worse!"


Re: First draft of the Tek knob visual index project

Michael A. Terrell
 

One of the scopes is damaged. I'll see if I have the part, when I dig them out of storage.

-----Original Message-----
From: Jeff Woolsey <jlw@jlw.com>
Sent: Jan 1, 2018 5:25 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] First draft of the Tek knob visual index project

On 12/31/17 2:31 PM, Michael A. Terrell wrote:
I have a couple of the 323/324 scopes if you'd like photos of those knobs. It will be a few weeks before I can dig them out to remove the knobs to photo.
Do you happen to have a souce for the horizonal VAR pot in a 323 scope? 
Mine seems to have a broken wiper.  It's a ganged pot, 20K/200K.

--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel. -Crow on solitaire




Michael A. Terrell


Re: First draft of the Tek knob visual index project

Jeff Woolsey
 

On 12/31/17 2:31 PM, Michael A. Terrell wrote:
I have a couple of the 323/324 scopes if you'd like photos of those knobs. It will be a few weeks before I can dig them out to remove the knobs to photo.
Do you happen to have a souce for the horizonal VAR pot in a 323 scope? 
Mine seems to have a broken wiper.  It's a ganged pot, 20K/200K.

--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel. -Crow on solitaire


Re: extender kit tek7xxx

Tryode
 

Hi Christian,
If your offer is still available I'm interested and please give me your email contact


Re: First draft of the Tek knob visual index project

Ravi Moghe
 

The problem is in the link.

The closing bracket has become part of the weblink.

If you copy all the text before closing bracket and open it in a new tab,
the page will open correctly. If you just "Click" on the weblink to open
page, it fails with 404 because the closing bracket gets included as part
of weblink.

--
With Warm Regards,

Ravi
(Sent from Personal A/c)


Re: PG-506 Calibrator and Power Module Compatibility

 

I agree that is probably what happened; the original design included
countersunk holes intending to be used with flat head screws but they
interfered with the alignment pins.

I wonder how mine ended up with flat head screws then and Tektronix
ones at that. There was no sign of previous repairs but it hardly
seems likely that someone was using it and removing the index pins
from the plug-ins.

On Sun, 24 Dec 2017 00:31:52 -0800, you wrote:

Hi David,
Yes, mine is the same but I would say it is clear from the unmarked paint in the countersinks that no flat-head screw (countersunk screw in the UK!) was ever fitted.

There is a curiously shaped - dished, almost a low 'top-hat' section - internally spiked lock washer then a dome nut on mine. The lock washer effectively bridges the countersunk hole and the dome washer is just for elegance I would think.

So I would contend that the holes were countersunk and only later did Tek realize there was an issue and found a solution that did not involve replacing the entire chassis? If I've understood this site, this should be a link a couple of pix: https://groups.io/g/TekScopes/album?id=13647


Re: First draft of the Tek knob visual index project

Chuck Harris <cfharris@...>
 

I have to wonder if the spurious 404 message problem
is due to the way the various website hosts handle low
volume websites. They all use virtualized servers, so
that each website appears as though it has a server all
to itself, but in reality, it is a virtual machine
running on a much more capable server, along with
thousands of other low volume websites.

But...

Most of these homemade websites get zero traffic the
majority of the time, so the virtualized website gets
parked off in cold storage on some disk until it is needed.

The first access after the website has been parked on disk
can take a very long time... 30 seconds to a minute before
any data makes it down the pipe. Perhaps somewhere along
the way some resource has decided that the site has taken
so long to respond that it must be missing, and takes it
upon itself to return a 404 to the request?

For a while after that initial request, the website will
be actually active, and subsequent requests will get quick
access... until the server decides the website is inactive
once again, and parks it in cold storage.

-Chuck Harris

Dale H. Cook wrote:

At 07:35 PM 12/31/2017, Dano wrote:

Link is no good, glorified 404 error.
I have noted, on some sites including my own, that one or two visitors get a 404 or other error where the vast majority of visitors are fine. My most recent case was a 403 error where the error was apparently occurring somewhere between the visitor and my site, as I use custom error screens and the visitor was seeing a plain text 403 message with wording entirely different from my 403 screen.

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html


Re: Sony/Tektronix 336 scope

kc0wox Leeper
 

I found a manual. Thanks anyway.
Leonard


Re: First draft of the Tek knob visual index project

Dale H. Cook
 

At 07:35 PM 12/31/2017, Dano wrote:

Link is no good, glorified 404 error.
I have noted, on some sites including my own, that one or two visitors get a 404 or other error where the vast majority of visitors are fine. My most recent case was a 403 error where the error was apparently occurring somewhere between the visitor and my site, as I use custom error screens and the visitor was seeing a plain text 403 message with wording entirely different from my 403 screen.

Dale H. Cook, GR / HP Collector, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcity/radios/index.html


Re: First draft of the Tek knob visual index project

 

Actually yes it is - groups.io do listen to feedback!

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Dano
Sent: 01 January 2018 03:44
To: TekScopes@groups.io
Subject: Re: [TekScopes] First draft of the Tek knob visual index project

Yep, can confirm, same issue with Safari on my Mac. (prior tests were all PC w/FF)

So, seems to pretty much be down to Groups.io. Oh well, not something we're gonna fix.

Again, sorry for the wasted bandwidth and cluttering of this thread. In the future, I'll start a new one for issues.

Cheers!

-Dano


Re: Sony/Tektronix 336 scope

 

Leonard:

I have excerpts from the service manual and some of the schematics that I have gleaned from the internet. I realize your request is from 10 years ago, but... I just joined this group and just saw your post. If you still need them, I would be glad to email them to you.

Gene
gwillard333@gmail.com


Re: SONY / Tektronix 336 Digital Storage Oscilloscope: Service Manual

 

Martin:

I have excerpts from the service manual and some of the schematics that I have gleaned from the internet. I realize your request is from 3 years ago, but... I just joined this group and just saw your post. If you still need them, I would be glad to email them to you.

Gene
gwillard333@gmail.com


Re: First draft of the Tek knob visual index project

Chuck Harris <cfharris@...>
 

I had a full set of links in the link I received.

Here it is:


<http://home.earthlink.net/~mike.terrell/Ephar.html>

With both links.

I pulled the copy out of the source text of the email, which
is what was given to the email program.

-Chuck Harris

Dano wrote:

Maybe it's my browser, but I think it's truly a bad link(s), and I suspect other browsers may be "fixing" it on the fly.

If you copy or hover over your links, they all have ">" at the end, but not at the beginning. Unequal brackets, is invalid. Hence, why I suspect some browsers may be fixing it automagically.

No big deal, long as its working!

Cheers,

-Dano


Re: First draft of the Tek knob visual index project

Michael A. Terrell
 

I use Mailwasher, and Firefox 57 too preview email. I've used this email address for almost 15 years, so it has landed on a lot of spam lists. I blacklist, then bounce the spam and any website that doesn't honor an unsubscribe requests. When the mailbox is about 95% full, I download it onto a compute running Seamonkey to archive what I want to keep. That way, I only have to fire up the other system every few months. The oldest messages are from early September, and I am at 50% of the 300MB limit.

Most of the spam messages are from 316KB to almost 2MB. That takes a lot of time to compress on Seamonkey, and increases the chances of causing an error. I have folders on the Earthlink folder for Ebay, HP, Tektronix, and Read Messages to presort them. I download in blocks of 200 messages at a time, when I empty the server. Some mornings I have over 50 pieces of blacklisted spam, a couple new sources and a dozen valid emails. It will take some time, but I will have to change close to 200 logins to a new web mail address. I am looking at paying for a domain name to get my own email server. Then I will give every login its own address. If I start getting spam from a new email address, I'll see if I really need to deal with whoever it was assigned to.

-----Original Message-----
From: Richard Knoppow <dickburk@ix.netcom.com>
Sent: Jan 1, 2018 12:39 AM
To: TekScopes@groups.io
Subject: Re: [TekScopes] First draft of the Tek knob visual index project

    I think there are some people who do not have a mail server that
Thunderbird or other mail clients can connect to. I agree its much
better to use a mail client for mailing lists and I happen to use
Thunderbird also.  I have a friend who is not very computer literate.
She uses computers at the library or university to access the web and
has a Yahoo mail account. I suppose there are members of this list in
the same boat. However I don't recommend it.
    Thunderbird is free and works pretty well but you need a mail
server. All the list systems will forward directly to an e-mail address,
some don't even have web sites. All decent mail clients have filters
which will direct incoming mail to folders. I have about twenty on this
machine. At least in T'bird they are easy to create.

On 12/31/2017 9:03 PM, Merchison Burke via Groups.Io wrote:
I don't mean to brag but for the benefit of those who have trouble
reading (or replying to) posts from "yahoogroups.com" and "groups.io",
I use Thunderbird (52.5.2) (32 bit) under Win 7 Pro (32 bit) and I
have set up "yahoogroups.com" and "groups.io" to send messages to my
e-mail client as they occur. I never use a browser to read any group
posts.

I have no problem linking from Thunderbird to Firefox (57.0.3) (32
bit) so that I can view the URLs, except on the rear occasion
Thunderbird won't link to Firefox. I then reboot my computer and the
links work.

I find that reading (or replying to) group posts in Thunderbird is far
easier than logging-in with a browser to read or reply to any posts.

On 2017-Dec-31 10:44 PM, Dano wrote:
Yep, can confirm, same issue with Safari on my Mac.  (prior tests
were all PC w/FF)

So, seems to pretty much be down to Groups.io.  Oh well, not
something we're gonna fix.

Again, sorry for the wasted bandwidth and cluttering of this thread. 
In the future, I'll start a new one for issues.

Cheers!

-Dano
--
Richard Knoppow
dickburk@ix.netcom.com
WB6KBL




Michael A. Terrell


Re: First draft of the Tek knob visual index project

Richard Knoppow
 

I think there are some people who do not have a mail server that Thunderbird or other mail clients can connect to. I agree its much better to use a mail client for mailing lists and I happen to use Thunderbird also.  I have a friend who is not very computer literate. She uses computers at the library or university to access the web and has a Yahoo mail account. I suppose there are members of this list in the same boat. However I don't recommend it.
    Thunderbird is free and works pretty well but you need a mail server. All the list systems will forward directly to an e-mail address, some don't even have web sites. All decent mail clients have filters which will direct incoming mail to folders. I have about twenty on this machine. At least in T'bird they are easy to create.

On 12/31/2017 9:03 PM, Merchison Burke via Groups.Io wrote:
I don't mean to brag but for the benefit of those who have trouble reading (or replying to) posts from "yahoogroups.com" and "groups.io", I use Thunderbird (52.5.2) (32 bit) under Win 7 Pro (32 bit) and I have set up "yahoogroups.com" and "groups.io" to send messages to my e-mail client as they occur. I never use a browser to read any group posts.

I have no problem linking from Thunderbird to Firefox (57.0.3) (32 bit) so that I can view the URLs, except on the rear occasion Thunderbird won't link to Firefox. I then reboot my computer and the links work.

I find that reading (or replying to) group posts in Thunderbird is far easier than logging-in with a browser to read or reply to any posts.

On 2017-Dec-31 10:44 PM, Dano wrote:
Yep, can confirm, same issue with Safari on my Mac.  (prior tests were all PC w/FF)

So, seems to pretty much be down to Groups.io.  Oh well, not something we're gonna fix.

Again, sorry for the wasted bandwidth and cluttering of this thread.  In the future, I'll start a new one for issues.

Cheers!

-Dano
--
Richard Knoppow
dickburk@ix.netcom.com
WB6KBL


Re: First draft of the Tek knob visual index project

Merchison Burke
 

I don't mean to brag but for the benefit of those who have trouble reading (or replying to) posts from "yahoogroups.com" and "groups.io", I use Thunderbird (52.5.2) (32 bit) under Win 7 Pro (32 bit) and I have set up "yahoogroups.com" and "groups.io" to send messages to my e-mail client as they occur. I never use a browser to read any group posts.

I have no problem linking from Thunderbird to Firefox (57.0.3) (32 bit) so that I can view the URLs, except on the rear occasion Thunderbird won't link to Firefox. I then reboot my computer and the links work.

I find that reading (or replying to) group posts in Thunderbird is far easier than logging-in with a browser to read or reply to any posts.

On 2017-Dec-31 10:44 PM, Dano wrote:
Yep, can confirm, same issue with Safari on my Mac. (prior tests were all PC w/FF)

So, seems to pretty much be down to Groups.io. Oh well, not something we're gonna fix.

Again, sorry for the wasted bandwidth and cluttering of this thread. In the future, I'll start a new one for issues.

Cheers!

-Dano



---
This email has been checked for viruses by AVG.
http://www.avg.com


Re: TDS-520

jafinch78 .
 

I appreciate you dealing with the PITA issue. Thanks for your time. No hurry on my end as I am taking a break for the holidays to do more not as technical projects, plus I did find the manual though there is only volume 2 (070-8313-00). Any ideas on volume 1? At least volume 2 has A10 through A21 modules detailed. Man, schematics are a PITA on a laptop.

What is a strapping resistor... like a resistor placed to make a trace bridge basically so different models can use different values or "strap" directly?

Seems I read somewhere that in the firmware the scopes can determine what hardware model boot processes to load based on resistor configurations like you note.

Is that correct? I guess that would be the EPROM instructing the Firmware chips. Though aren't the Firmware chips on the firmware board for the TDS-520?

I am guessing later models use the NVRAM since looks like later model boards have two Dallas/Maxim NVRAM chips. Is that correct?

Seems I read somewhere in later models... that was changed so there are no firmware modules.

Thanks and I appreciate you taking the time to look into.

Happy Holidays!


Re: First draft of the Tek knob visual index project

Dano
 

Yep, can confirm, same issue with Safari on my Mac. (prior tests were all PC w/FF)

So, seems to pretty much be down to Groups.io. Oh well, not something we're gonna fix.

Again, sorry for the wasted bandwidth and cluttering of this thread. In the future, I'll start a new one for issues.

Cheers!

-Dano

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