Date   

Re: OT: A Spring trip!

Richard R. Pope
 

Hello all,
BTW: Reedsburg area includes Chicago, Milwaukee, Madison, Minneapolis, Dubuque, or any other towns or cities within 300 miles.
GOD Bless and Thanks,
rich!

On 11/6/2019 9:22 PM, Richard R. Pope wrote:
Hello all,
I am looking for someone in the Reedsburg, WI area that would like to take a road trip out West come this spring. Say sometime in late May or early June. If you are interested please let me know. Non-smoker only.
GOD Bless and Thanks,

Richard R. Pope
1230 19th Street #5
Reedsburg, WI 53959, USA
1-608-768-7448
mechanic_2@...




OT: A Spring trip!

Richard R. Pope
 

Hello all,
I am looking for someone in the Reedsburg, WI area that would like to take a road trip out West come this spring. Say sometime in late May or early June. If you are interested please let me know. Non-smoker only.
GOD Bless and Thanks,

Richard R. Pope
1230 19th Street #5
Reedsburg, WI 53959, USA
1-608-768-7448
mechanic_2@...


Re: TDS3044B repair

Tom B
 

Hello All,

I am just catching up on this thread.

There is a youtube video on replacing the CCFLs with LEDs here https://www.youtube.com/watch?v=iVU0YPIeovM

The part number for the TDS3000 (no letter) display is listed in the service manual as an NEC NL6448AC20–06.  These displays are available on ebay and other places for about $60US.   I think the part number for the B model is NL6448BC20-08, but I am not 100% sure of that.  These displays are running about $80-$100US. The only difference I can find in the in the datasheets between NL6448AC20–06 and the NL6448BC20-08 is that the -08 model has higher luminance.

Can anyone verify the part number on the TDS3000B display?

I will check for the for the signals that Harvey mentioned when I have time.  The pins that go to the display are really hard to get to because of the way this thing is built.   There are the test points on the main board, but the service manual makes no mention of what they are for.

Tom Bryan
N3AJA

On 11/6/2019 10:58 AM, Harvey White wrote:
This is the first item that came up when searching for CCFL LED replacements

https://urldefense.com/v3/__https://www.ccflwarehouse.com/__;!b9GWhakWANQ!1VZO1N_UzGPrK5tvZk-sSIE3W2ulp1zapXqXmDScqYhd9jWmbO6SGjvZhNdA$
no idea if they have anything that will fit.

I have made CCFL replacement strips for some odd displays, the older Optrex DSTN color displays and the FG0800 8 inch VGA display.

Due to the lack of 12 volts in a battery operated project, all of them are designed to run the LEDS in parallel, at about 15 ma per led, about 9 per 4 inch strip.  The strips are designed to be stacked, resulting in parallel operation.

Whether or not the lamps can be reasonably replaced depends on the manufacturer.  In the Optrex displays, remove a screw, swing a shield aside, and pull out the tube.  In the FG0800, it's more involved (and takes 4 strips), even more if you wanted the side. The silly tube is a top, left, and bottom assembly.

The replacement should be made to run off the (suspect 12 volts) supply, and a simple PWM would easily replace the inverter.  I'm sure it varies wildly.

I know there's a market out there, and the more common the display, perhaps the easier it is to find the LED replacement,  or even the tube itself (which I'd recommend unless you want to go LED).

I went LED because the power consumption in battery operated equipment goes down by 50 to 75%, and I'm not happy with 1600 volts running around an experimental setup.

So give these people a try, they seem to be going laptop, so no idea what else they do.


You might also want to look here:

https://urldefense.com/v3/__https://www.plazmo.com/collections/raw-ccfl-lamps/products/ccfl-backlight-for-tds3000-oscilloscope__;!b9GWhakWANQ!1VZO1N_UzGPrK5tvZk-sSIE3W2ulp1zapXqXmDScqYhd9jWmbO6SGtNxwsuf$
10 dollars.

Harvey


On 11/6/2019 10:03 AM, David Kuhn wrote:
" there are commercially
available LED backlight kits to replace the CCFL lamps.  "

I would be in your dept if you could point me to an LED replacement for the
fluorescent tubes in the NEC displays like that are used in the TDS3000
series (no bloody A, No bloody B or C).  I'll get the actual NEC LCD part
number and reply again later.  I wonder if the LED replacement is made to
run off the fluorescent tube inverter supply?  I ask that because that
supply has software control line to control the brightness.  LET is
probably off or on, unless it is designed to run off the inverter or a
software equivalent inverter is available (retrofitting old equipment not
designing new stuff).

dave

On Tue, Nov 5, 2019 at 2:31 PM Harvey White <madyn@...> wrote:

On 11/5/2019 1:59 PM, David Kuhn wrote:
Sorry for the response delay.

I am in Lewistown, PA.  How cheap are the displays and where are you
finding them?  I have found the ones, used in the Ultrasonic instruments
I
mentioned, on Alliexpress, and EBAY (haven't ordered any from either
one),
but I can not find the backlight tubes, which I find is usually the
problem
with the displays.  The displays may be just slightly different than in
the
TDS3032, but if so, only mechanically.  The connectors are the same, and
I
really think the part numbers are the same.  It's not a real easy
replacement in those TDS scopes.  It looks easy, but it's a pain in the
butt.
Depending on the manufacturer of the display, there are commercially
available LED backlight kits to replace the CCFL lamps.
You may want to buy the TDS3GV on EBAY.  I can't use a TDS3032 without
one,
but I have written a lot of service software in VBA and VB6 that
automatically sets up the scopes and gets data from them.  I can also
project my TDS3032 to the 32" TV mounted on the wall above it (an older
Sceptre with VGA input) and that's pretty cool.

Again, if the cables are seated well, I doubt the LCD is bad with an
all-white display.  My thoughts are a main PCB issue. A TSD3GV could
prove
me wrong.
If you find an all white display, then depending on the type of display
(positive or negative) you'd suspect no signals to it, or improper signals.

The display is likely to take either 5 or 3.3 volts, recent ones that I
have take 3.3.  Older STN displays can take 5.  The white is the result
of the backlight working, but no active pixels at all (hence no
polarization, etc....).

Like a CRT display, you'll be looking for a horizontal sync (at perhaps
30 Khz), vertical sync (say 60 or so Hz), a DE (likely at horizontal
rate and active high), and a pixel clock at about 25 or so Mhz.  You'd
also expect supply voltages to be somewhere on the display. If the
timing is right and the voltages are there, then the display ought to be
showing something.  If not, then look at the other pins, they should be
R,G,B digital signals, either in 565 (for a 16 bit panel) or 666 (for an
18 bit panel).  If there's any activity on them, then with the right
sync signals, they ought to be giving something on the display.

Harvey



Dave

On Tue, Oct 29, 2019 at 10:55 PM Tom B <tbryan@...> wrote:

Hi Dave,

I  tried the "B Trig" and nothing happened.  Displays are fairly cheap
but I don't want to buy one unless I have to.

Thank you for the offer.  I would be a long while before I make it up
that way.

What town are you in?

Tom

On 10/29/2019 4:52 PM, David Kuhn wrote:
I'm in central, PA, about 3 hours from you if you ever want to come up
and
try it here with one of my VGA/GPIB modules.

Before that.  Power it up while holding in the "B TRIG" button (might
be
different on the TDS3014), which on my TDS3032's causes a RESET.  I've
had
that fix display issues after replacing the battery NVRAM in in the
scope.
The display in the TDS3032, is the exact same LCD used in the GEIT
Phasor
XS and USN60 instruments.  I have worked on many.  I have never seen
the
LCD fail on those instrument where it's all white.  Typical, if not
broken,
is smeary displays that lines seems to go out of sync.  Dim, of course
with
broken backlight tubes.

Dave

On Mon, Oct 28, 2019 at 10:50 PM Tom B <tbryan@...> wrote:

Hi Rich (?),

Thanks. I am located in Maryland near Washington DC.

If anyone in the Washington DC area has a TDS3GV that I could come
over
and quickly test my scope with, I would appreciate it.

Tom Bryan
N3AJA


On 10/28/2019 10:29 AM, Oz-in-DFW wrote:
I'd still remove and reseat both ends.

Where are you in the world?  I have a VGA/serial/GPIB card in my 3014
that we might be able to mate with your scope briefly.








Re: A few pics from a new-to-me exhibit in the National Museum of Nuclear Science and History

@0culus
 

On Sat, Nov 2, 2019 at 01:10 AM, battyhugh wrote:


If you are in Minneapolis - on the S side of the bridge across the river on
the W side (if I remember correctly) - there is another relic - you have to
decend about 6 stories down - there are masses of HB spec analysers and a
rather large Van de Graffe generator - - very strange (I saw it in early 90's)
- A Dr Weiblen was working at that time on using high voltage pulses to bust
up moon rock. It would be rather interesting to document the remaining
residues of the 50's and 60's (on the marshes near Palo Alto is an old radio
transmission facility - might be interesting... but wait.. there's more!
Hmmm, is it an abandoned site or is someone taking care of it?


Re: A few pics from a new-to-me exhibit in the National Museum of Nuclear Science and History

@0culus
 

On Fri, Nov 1, 2019 at 06:02 PM, J Mcvein wrote:


Put on your Atomic Age bucket list a visit to the Hanford 'B'reactor.  Some
vintage Tek in a 1968 time capsule.  Also themost extensive thermocouple
crosspoint switching system around.
JimMc
Oh, that would be awesome. Will definitely keep it in mind when I find my way up that direction.

Sean


Re: So long...

evan foss
 

On Wed, Nov 6, 2019 at 2:40 AM John Griessen <@jgriessen> wrote:

On 11/5/19 6:51 PM, Craig Sawyers wrote:
it is
finally time to sign off.
OK, but come back if you miss the conversation.
thirded
and thanks for all the posts. some of them have really helped me.



--
https://github.com/evanfoss

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Re: So long...

bobkrassa
 

Craig, your breadth of knowledge of so many fields, and your willingness to explain your reasoning, have been very helpful to me and made our mutual interest in Tektronix and related areas of physics and engineering more enjoyable. I also have appreciated that you speak in a direct, straight forward way. That has largely gone out of style but used to be the way people who respect each other talk. I will miss your contributions to this forum.

Bob Krassa ACØJL


Re: I personally don’t think Craig should quit

Jamie Ostrowski
 

Also, I don't hear anyone reaching out to Peter Gotleib, who simply shared
a short story about his 7000 series scope. He seemed like a very nice
fellow and I appreciated his contribution! Do you think we made him feel
welcome?

On Wed, Nov 6, 2019 at 8:09 PM Jamie Ostrowski via Groups.Io
<jamie.ostrowski=gmail.com@groups.io> wrote:

I am not sure I understand what anyone said to make him feel unwelcome.
People disagreed with his viewpoint, and I didn't notice anyone being rude.
Do we all need to agree with each other all the time on every topic?

On Wed, Nov 6, 2019 at 7:45 PM John Williams <books4you@...> wrote:

Craig: Since the beginning of the broo-haha I have a voided commenting.
However the more I think about it the more I want to chime in. I know you
have contributed a lot over the years. I don’t know that the dog pilers
have. But that is irrelevant. Everyone deserves to say what they think
on a
forum like this. If someone doesn’t like it, they are welcome to express
their view. Everyone should be cut a lot of slack when it comes to
criticism. We avoid politics, religion and such topics beyond reason.
But I
hope no one is made to feel unwelcome. So in my opinion I would ask you
to
stay. Please remember that those posts do not represent the hundreds of
other members. Tektronix instruments are becoming a thing of the past. We
need everyone to help keep them alive including you. God bless.






Re: I personally don’t think Craig should quit

Jamie Ostrowski
 

I am not sure I understand what anyone said to make him feel unwelcome.
People disagreed with his viewpoint, and I didn't notice anyone being rude.
Do we all need to agree with each other all the time on every topic?

On Wed, Nov 6, 2019 at 7:45 PM John Williams <books4you@...> wrote:

Craig: Since the beginning of the broo-haha I have a voided commenting.
However the more I think about it the more I want to chime in. I know you
have contributed a lot over the years. I don’t know that the dog pilers
have. But that is irrelevant. Everyone deserves to say what they think on a
forum like this. If someone doesn’t like it, they are welcome to express
their view. Everyone should be cut a lot of slack when it comes to
criticism. We avoid politics, religion and such topics beyond reason. But I
hope no one is made to feel unwelcome. So in my opinion I would ask you to
stay. Please remember that those posts do not represent the hundreds of
other members. Tektronix instruments are becoming a thing of the past. We
need everyone to help keep them alive including you. God bless.




Tek collapsible viewing hoods

Craig Cramb
 

While checking stock for another user, found I have some 016-0180-00 and
016-0566-00 viewing hoods available if anyone has a need for these parts.
Contact offline,,@Manfromtrane

Craig


I personally don’t think Craig should quit

John Williams
 

Craig: Since the beginning of the broo-haha I have a voided commenting. However the more I think about it the more I want to chime in. I know you have contributed a lot over the years. I don’t know that the dog pilers have. But that is irrelevant. Everyone deserves to say what they think on a forum like this. If someone doesn’t like it, they are welcome to express their view. Everyone should be cut a lot of slack when it comes to criticism. We avoid politics, religion and such topics beyond reason. But I hope no one is made to feel unwelcome. So in my opinion I would ask you to stay. Please remember that those posts do not represent the hundreds of other members. Tektronix instruments are becoming a thing of the past. We need everyone to help keep them alive including you. God bless.


DPO7054 question about Edge button

 

I’ve got a DPO7054 here and notice that the Edge (trigger) button doesn’t light up when pushed. Is it supposed to?

Manuel Maseda


Re: So long...

Robert Simpson
 

Craig,
Thank you for all your posts and the many times you have helped me.
Bob


575 in Texas (CL)

John Griessen
 


Re: Tektronix Spectrum Analyzers

fiftythreebuick
 

You are so right, Jim!

On Tue, Nov 5, 2019 at 02:42 PM, Jim Ford wrote:


Well, to each his own.  Keeps things interesting! ;)JimSent from my Verizon,
Samsung Galaxy smartphone


Looking for a Tek collapsible viewing hood, part number 016-0260-00

@0culus
 

As the title says, I'm looking for one of these viewing hoods that fit in 7000 series mainframes. I need another one for my 7104 (already have one for my 7904A) so I don't have to move it around.

Feel free to email me off list.

Thanks!

Sean


Re: Can anyone in the Seattle area copy a 2764DC EPROM PROBLEM SOLVED

Mark Huffstutter
 

That's a familiar name, was He the fellow who owned Blue Feather Technologies
some time back? If it is, You sure found the right Guy!

Mark

Bruce Lane will read the EPROM for me. He is nearby.
Dennis Tillman W7PF

-----Original Message-----
From: Dennis Tillman W7PF
Sent: Tuesday, November 05, 2019 3:09 PM
Subject: [TekScopes] Can anyone in the Seattle area copy a 2764DC EPROM

I need to get a 2764DC EPROM copied to a text file in (preferably) BIN
Format.
It contains the Version 2.0 executable code for the 7000 series
021-0374-00
GPIB Decoder Plugin.
These GPIB Decoder plugins are extremely rare and it would be valuable to
have a copy of this version of the EPROM software for our archives.
They are used to control the 7xxxP programmable plugins in the 7912AD,
7912HB, and 7854.
Pictures of this plugin can be seen on TekWiki at:
http://proxy.w140.com/tekwiki/wiki/021-0374-00

I'm in Bellevue on the Eastside.
If you are nearby contact me OFF LIST at dennis at ridesoft dot com.
Dennis Tillman W7PF



--
Dennis Tillman W7PF
TekScopes Moderator




Re: 453 HV Transformer Rewind SUCCESS

Dave Wise
 

SUPPLEMENT 7

Official Tektronix recipe for 120-0360-00:

Pri 1 1-2: 3T #26 AWG
Pri 2 3-4: 2T #26
Sec 1 11-12: 3T #26
Sec 2 5-9-7: 0-542-1100T #38
Sec 3 6-10: 582T #38
Sec 1 insulated to 2KVDC
Sec 2 and Sec 3 bifilar, machine wound using 0.312" cam


Re: vintageTEK scanned transformer drawings for 120-0998-01 and up ( 120-197 )

Dave Wise
 

Thank you!

Dave Wise
________________________________________
From: TekScopes@groups.io <TekScopes@groups.io> on behalf of Kurt Rosenfeld <kurt.harlem@...>
Sent: Tuesday, November 05, 2019 3:43 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] vintageTEK scanned transformer drawings for 120-0998-01 and up ( 120-197 )

Here is the 120-0360-00 drawing:

http://w140.com/tekwiki/images/9/97/Tek_120-0360-00.pdf


Re: vintageTEK scanned transformer drawings for 120-0998-01 and up

Dave Brown
 

The drawings for the -197 and -360 have been added to the file.

Dave