开云体育

Apologies, typo.

Bernie !!

rick

hi Bob,

Yes, thank you, I saw that link.

But I could not locate any .pdf manuals for the 6126M there !

My mainframe arrived without the SG503.

r

Yes, but I don't think I'm going to be able to buy from eBay.de from Charlotte, NC. I don't understand enough German to be able to decypher the listing anyway.
________________________________
From: [email protected] <[email protected]> on behalf of Myname <pudu1@...>
Sent: Wednesday, November 28, 2018 1:14 PM
To: [email protected]
Subject: Re: [TekScopes] AVR Scope Clock

Or that sort?

HTH

pudu51

Sort of. More like this, though:





________________________________
From: [email protected] <[email protected]> on behalf of Craig Sawyers <c.sawyers@...>
Sent: Wednesday, November 28, 2018 12:44 PM
To: [email protected]
Subject: Re: [TekScopes] AVR Scope Clock

I've seen these XY oscilloscope clocks out there before and wanted to pick one up. Unfortunately,
the
Dutchtronix website shows "out of stock." Does anyone know if these kits are still being made, and
if
so, where I can pick one up? I sent an email to the address on the website but got no response so I
thought I'd see if anyone here knows anything about them or where I could get one.

Thanks,
John

This sort of thing?

Craig

Or that sort?

HTH

pudu51

I've seen these XY oscilloscope clocks out there before and wanted to pick one up. Unfortunately,
the
Dutchtronix website shows "out of stock." Does anyone know if these kits are still being made, and
if
so, where I can pick one up? I sent an email to the address on the website but got no response so I
thought I'd see if anyone here knows anything about them or where I could get one.

Thanks,
John

This sort of thing?

Craig

I've seen these XY oscilloscope clocks out there before and wanted to pick one up. Unfortunately, the Dutchtronix website shows "out of stock." Does anyone know if these kits are still being made, and if so, where I can pick one up? I sent an email to the address on the website but got no response so I thought I'd see if anyone here knows anything about them or where I could get one.

Thanks,
John

Hello Tek fanatics!

I have an MSO 3012 and I lent it to a friend. That was the last time it leaves the house!
It came back with the message: something is wrong... Well you can say that again!

I've done some tests and I've put the story on the "official" (and completely dead?) Tek forum:

I don't know how he did it. But somehow two resistors, which are in series with the
incoming signal, were burned out. I've put in two 47 Ohm resistors for test in parallel
and the scope seems to work well then. The input impedance was nicely 1Meg again instead of oc.

In the meanwhile I've checked and confirmed that these resistors need to be 50.0 Ohm.
(At my work was a 4 channel version, and I've checked it there) I've replaced the
resistors with thin film 50.0 Ohm resistors. All ranges are working normal again.

But I have some questions left...

What happened here? I think it had a huge over voltage/HF power. Probably
some crowbar construction with the 50 Ohm resistors protected the scope?
If there is a protection circuit, I would like to know if that is still working well.

Are there any schematics available on these MSO 3012 scopes?

Thanks in advance!

Thanks for the advice :-)
Dave

Do you have the specific message from the error log?
--Eric
Sent from my Samsung Galaxy smartphone.

I got a good "new" Dallas DS1742W-150 from NAC in St. Petersburg, Florida.

I had ordered some low profile pin carrier matching sockets, guaranteed to
be here by today, but the Post Office lost track of them after they hit the
PO in Dallas, TX. I had also bought two ZIF sockets, but those will NOT
fit on the TDS3032 board.

So, I used individual, old fashion, lead carrier pins that I had on-hand.
I had to sacrifice two 16 pin lead carrier "sockets" to make on 24 pin
socket. When the carriers are removed, it all individual pins sticking out
of the board, so it takes careful work to keep them all straight and
aligned.

The scope booted up the first time with no errors!!! ...except the
background color was red instead of blue. It was rather stunning actually,
but I knew that wasn't right. I re-booted holding in the "B-TRIG" key to
perform a cold boot. That worked. The scope is looking good again.

It appears to be holding its GPIB address, the time and date, and the SPC
calibration.

Now that it works, I can dremmel in to the old Dallas chip and find the
battery and try to create an external battery for this chip. That way when
this "new" chip dies, or the one in my backup TDS3032 dies, I will have a
better solution.

Thanks to everyone that had suggestions on here on in the EEVBlog Forum,
that helped to eventually lead me to this fix. it's great to have my old
buddy back in the test setup again! Happy days are here again!

Dave

I have the same problem too.

Do you have any clue to solve this 320 error ?


Thanks
Simon

hi Bruce,

I just acquired a Ballantine 6126M Oscilloscope Calibrator and its associated Time/Div. module in a browns Ballantine mainframe.

My unit has some issues, and I would really appreciate having the .pdf manuals so that i can repair it.

-- if you have the manuals, would you be able to email (off-line, Private ) them to me ?

thank you,
rick
Tekscopes

Recent arrival:
old Ballantine 6126M Oscilloscope Calibrator + a Ballantine Time/Div. module (model # ??),
+ a Tek DM 501 + an empty slot (?) in a brown (6-slot) Ballantine mainframe.

a) Looking for the Ballantine 6126M + the Time/Div. manuals in .pdf form !
-- If anyone has these .pdf manuals would they email them to me, off-line (Private) ?

b) The Time/Div. module has problems with the 1 uS selection.
--Any ideas what the problem might be (dried up capacitor or transistors ) ?

Also:
c) -- What might have been in the single empty slot in the Ballantine mainframe ?
- another Tektronix module ?

d) -- Is the brown Ballantine 6-slot mainframe the same as a Tek TM-506 mainframe ??

thank you,
rick

Older version of the PG 506 arrived with an ~ 1/2" dented-in front panel at the LED - Variable Amplitude knob juncture.
Looks like it took a nose-dive to a concrete floor !

a) The Grey/Black-Red Amplitude knob is shattered and incomplete.
That switch itself seems to turn correctly when gently grasped with cardboard stock held in a vice grips.
-- Does anyone have a plastic knob that would suitably work ?
-- Please contact me via Private e-mail.

b) Question:
Have not tried to power up the PG 506 yet, due to the bent-in front panel + broken bezel.
Any hints:
-- Is there anything right behind that area that could be shorted or physically broken ?
-- What is a procedure to open-up/bend-back the front panel without damage ?

thank you,
rick

If you have to turn it CCW to see anything, but it is sweeping then the problem is obviously DC offset. First of all, how does it act in XY mode ?

In the XY more if it is still offset to the right then look to the output amps. My copy of the print doesn't have it, it is in the one labelled "missing pages". If it is centered with the position pretty much in the middle of range then look to the sweep generators or switching.

After a certain point in the chain everything is differential so center the position control and try to see where the voltage imbalance starts.

Sounds like one side of the Horiz amp has a bad transistor.Is the horiz position knob skewed all the way to one side or the other ?If so, swap corresponding transistors until you see the trace skew to the other side of the screen.You could also short the case of corresponding transistors to each other to see if the display centers up.
HankC, Boston, WA1HOS

Hello,
Thanks Brad, Craig, Tim and Rogers for your heads up and sorry for the long delay in answering. Past was a busy and crazy week.

In the end, I only wasted the bandwidth and your time because it wasn't the mains fuse what was blowing.
I only assumed it, because even the power pilot light wouldn't turn on, but I realized only later that the power light on this scope is powered from the +5V.

The net result however, was almost like if the mains fuse had blown, because the scope ***almost*** didn't have any power... Only the -50V was there... all the others were collapsed.

I found a blown 150mA fuse on the 130V P.S.
I found the resistance of the +130V to ground to be only about 20 Ohms, something that couldn't be right for a 130V rail that's limited to 150mA (tops).
After some chasing, I foundthree 2N5551 short-circuited, all three of them belonging to the +50V supply and all were being either fed by the +130V or referenced to it and, being shorted, they were blowing the +130V fuse.
After a thorough check of all components around those three trannies, to rule-out they could have been blown by something else, and having found nothing else blown or even drifted, I simply replaced the three trannies and the fuse and scope is now back on track.

Curious fact is that, although almost all LVPS of this scope are over-current protected, the +130V is the only one that is protected by a fuse (I don't count the H.V. power supply fuse, because that is on the unregulated side), and almost all the other supplies rely directly or indirectly on the +130V rail to operate so, a +130V rail fuse blown brings the whole scope down.

That's the closing for this topic.
Thanks again for those who took the time to answer... This report goes for you.

Rgrds,

Fabio

Don't forget Alan's freebie down in Brighton, if you fancy a repair:

"I have a Tektronix Model 2215 to give away. It’s a 60MHz dual trace ‘scope, but it has a PSU fault, so it doesn’t power-up correctly. Probably an easy fix, but I just haven’t had time to look at it and in the meantime I bought a Rigol, which suits my purposes better.

Sorry it’s collection only, first come first served. I’m in the Brighton area of the UK.

Email direct to g4gnx AT g4gnx.com

Regards,

Alan. "