Date   

Re: DSA 602 "partial enhanced accuracy" at each startup

 

I forgot: both DSAs have the 4C option.


Re: DSA 602 "partial enhanced accuracy" at each startup

 

Hi all,

I re-checked both my DAS602 (without A, unfortunately):

#1 (doing partial enhanced accuracy at each startup)
Executive 2.2, Digitizer 2.2, Display 2.3
11A34 with F3.3
11A72 with F2.11
11A33 with F2.4
all checks passed on all modules

#2 (immediate measurement after startup)
Executive 2.23, Digitizer 2.23, Display 2.3
11A72 with F2.11 and "fuse test failed"
11A33 with 2.4 OK
no module in right slot

Before the NVRAM-Battery-message I thought that one of the two other batteries was flat making the scope forget its configuraton. But they all tested fine.
Would the module throw an error message if its Dallas-chip-battery is gone?

cheers
Martin


Re: Switching a Tek TDS 5204 to 50 Ohms input impedance - Strange!

Ed (SCSKITS)
 

When the photo diode output is connected to 50 ohms vs 1megohm, I would expect the voltage to drop unless there is an amplifier in line. And even if there is, it would have to have a low output impedance to drive 50 ohms with the same voltage as 1 megohm.

ed


4041 System Controller Service ManualS.

Egge Siert
 

Hi to All,

A reply of Hakan Hintze on an earlier Post:

" FYI, a newer 2 volume Service Manual which replaced 070-3919-00 was
available from March 1988. P/N 070-6965-00 and 070-6966-00.
/Håkan "

Greetings,

Egge Siert


Re: DSA 602 "partial enhanced accuracy" at each startup

Egge Siert
 

Hi,

My DSA602A (B051047) with FW 2.2 does the same during Start-Up. Till now I thought is has to do with the missing extra NVSRAM. But now it seems it doesn't. Modules are fine.

Greetings,

Egge Siert


Re: Tek 11000 Series Scope

n4mf_sc
 

Yes I have a 11402 and a 11401 and I can fit the 11A34, 11A52, 11A72 and 11A71 between the 2 as needed.

Mitch
N4MF


Re: Some interesting Nuvistor information

stevenhorii
 

I am replying in this thread as I have some recollection that the Tek 567
had Nuvistors in it. Do any of you have experience with a 567? I've heard
stories that some that turned up for low prices were purchased by those
looking for Nixie tubes! I know this happened with the Hewlett-Packard 5245
and 5248 counters. I still use an HP 5248M. I also have several time code
generators (Astrodata, Eeco) that use Nixie tubes. They can get dim, but
they last a long time.

Steve H.


On Sun, Jun 14, 2020 at 10:06 PM snapdiode via groups.io <snapdiode=
yahoo.com@groups.io> wrote:

I've been (virtually) leafing through the issues of the RCA Engineer

https://worldradiohistory.com/ARCHIVE-RCA/RCA-Engineer/1964-04-05.pdf

Some details on the Nuvistor on page 8 of the magazine, page 10 of the PDF.




Some interesting Nuvistor information

snapdiode
 

I've been (virtually) leafing through the issues of the RCA Engineer

https://worldradiohistory.com/ARCHIVE-RCA/RCA-Engineer/1964-04-05.pdf

Some details on the Nuvistor on page 8 of the magazine, page 10 of the PDF.


Re: Tek 4041 GPIB Controller

Gary Robert Bosworth
 

Monty: Please let me know when you have the 4041 DDU manuals and let me
know how much it will cost to purchase one. An e-mail copy would be easiest
for me.

Gary

On Sun, Jun 14, 2020 at 4:23 PM Monty McGraw <mmcgraw74@gmail.com> wrote:

I'm still waiting for the donation price - and the DDU scan. I've asked
for all the 4041 service manuals, including the DDU.

Monty

On Sun, Jun 14, 2020 at 5:35 PM Gary Robert Bosworth <grbosworth@gmail.com
wrote:

Monty: Is there any way I can get a copy of your 4041 DDU manual? I
never
did get one and I have been winging it for years.

Gary

On Sun, Jun 14, 2020 at 10:11 AM Gary Robert Bosworth via groups.io
<grbosworth=gmail.com@groups.io> wrote:

Thank you for the information Monty.

Gary

On Sat, Jun 13, 2020 at 8:06 PM Monty McGraw <mmcgraw74@gmail.com>
wrote:

Gary,

The DDU manual does not have a power supply schematic - it just says
contact Power One :(

I found this website - he indicates most Power One supplies have a
very
similar schematic as they are typically linear supplies:

https://www.djerickson.com/p1hack/




--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247



--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247





--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247


Re: Am I doing it right?

Harvey White
 

Let me disagree with the model, but not the concept.

My experience is that if it has a hard drive, it's LOTS nicer than one that is running off floppies.  I've had the 1631D, the 1650 and 1651, the 16500 B (has hard drive), the 1661, and the 16702A and 16702B.  These are all HP models.

Tektronix scopes I love, HP scopes (except the later digital ones) drive me up a wall (the 170x models specifically).  HP logic analyzers I like, the Tektronix logic analyzers (and I do have a 308) are annoying, at best.  Granted, I haven't tried the later ones.

If a logic analyer has a hard drive, I like it better.

I've used the kinds of logic analyzer (and HP did both) that had either a keyboard or a touchscreen.

I personally prefer a touchscreen.

Given an option, I'd also go with color, because, seriously, it's nicer.

Whose interface, Tek or HP,  is up to you.  However I'd go for color if possible, and touchscreen.  Since you want inverse assemblers that's yet another matter

Harvey

On 6/14/2020 5:43 PM, Jan Weber via groups.io wrote:
If you're willing to sacrifice the space on your bench you should consider
a HP1652B.

For my taste it has some advantages. You can load disassemblers into the
machine by floppy. You do not need to mess around with ROM packs. It has a
built in digital scope.

https://www.rudiswiki.de/wiki9/CategoryLogicAnalyzer

Regards

Jan

Jim Ford <james.ford@cox.net> schrieb am So., 14. Juni 2020, 22:43:

Jan Weber is correct about space. I've sent you a private message on
this and other stuff.

Jim Ford

------ Original Message ------
From: "Ondrej Pavelka" <info@vintageaudiorepairs.eu>
To: TekScopes@groups.io
Sent: 6/14/2020 1:24:18 PM
Subject: Re: [TekScopes] Am I doing it right?

So I'll need to find the chassis and two acquisition card and build the
superpack and buy the probes.
The initial cost looks low but by the time I add probes acquisition cards
etc I'm on several hundred dollars. The microprocessor support is really
great, it covers everything I use and good 95% with only two acquisition
cards.
Still were talking about 100EUR for chassis 100 EUR per acquisition card
and similar 100EUR for probes. Then there is so many other probes and
varieties one can easily throw 1000 at it and still not be done with it.
On
the other hand if could sit nicely on the top of the 2445B

On Sun, 14 Jun 2020, 21:51 Jan Weber via groups.io, <jancarlweber=
googlemail.com@groups.io> wrote:

A Tektronix 1241 is not exactly space-saving...

Regards

Jan Weber

Ondrej Pavelka <info@vintageaudiorepairs.eu> schrieb am So., 14. Juni
2020,
21:19:

> Roy,
> I noticed I made a typo it is DS2072 not 2272
>
> On Sun, 14 Jun 2020, 21:04 Ondrej Pavelka, <
info@vintageaudiorepairs.eu>
> wrote:
>
> > Yes I have unlocked it to gain all features and more speed
> >
> > On Sun, 14 Jun 2020, 21:00 Roy Thistle, <
roy.thistle@mail.utoronto.ca>
> > wrote:
> >
> >> On Sun, Jun 14, 2020 at 06:33 AM, Ondrej Pavelka wrote:
> >>
> >> >
> >> > I have Rigol 2272
> >> >
> >> Hi Ondrej:
> >> Rigol had the 2000 series 2Gs scopes, from 70 MHz bandwith up to
300
> >> MHz... what's a 2272?.... I'm speculating you have an unlocked
2272A?
> >> Regards and best wishes.
> >> Roy
> >>
> >>
> >>
> >>
>
>
>
>






Re: Encouraging beginners: What are we accomplishing?

petertech99h
 

Hi all,
I agree with 'Sdturne@q.com' completely! We are lucky in a democracy that equipment can trickle down to ordinary folks at a goodprice or we can buy when most gear is new if that's what we want! Lots of countries restrict the populace to servitude.

I worked in many factories in my day, sometimes the rush of production took away the pride of making something in America becuase we had no idea what the future held!

Helping beginners keeps our hobby and our history alive as mentioned earlier:

"ANY time you bring in fresh blood, it's better for everyone.  Every time.  No exceptions.  A rising tide floats all boats."
73
Pete

On Wednesday, May 27, 2020, 2:43:46 p.m. EDT, <sdturne@q.com> wrote:

"What are we accomplishing"...quite simple really, keeping the hobby, and some of the highest quality stuff ever bestowed the label "Made in USA", alive! Newcomers are lifeblood, and sour old men scaring them away with rhetoric like post this accomplishes nothing positive. It's gatekeeping, pure and simple. Instead, why not pass on your knowledge and be happy in knowing that it isn't going to die when you do. Sorry to be blunt, but that's really important. Given proper care, a lot these Tek scopes will probably last several more decades in good service to the hobbyist, but only if younger folks have an appreciation for them and a desire to preserve them.

This is a fantastic group for preserving that knowledge base, and I thank Dennis for working hard to provide it and keep it that way.

Sean


Tekniques Vol. 4 No 8, Pages 10, 11, 16

 

Does anyone have any issues of Tekniques publication?
I'm looking for Tekniques Vol. 4 No 8, Pages 10, 11, 16.

TekWiki only has a few issues so they may be interested in copies of what
you have.
Contact me off list if you have the issue I need.
Thanks,
Dennis Tillman W7pF


Re: Tek 4041 GPIB Controller

Monty McGraw
 

I'm still waiting for the donation price - and the DDU scan. I've asked
for all the 4041 service manuals, including the DDU.

Monty

On Sun, Jun 14, 2020 at 5:35 PM Gary Robert Bosworth <grbosworth@gmail.com>
wrote:

Monty: Is there any way I can get a copy of your 4041 DDU manual? I never
did get one and I have been winging it for years.

Gary

On Sun, Jun 14, 2020 at 10:11 AM Gary Robert Bosworth via groups.io
<grbosworth=gmail.com@groups.io> wrote:

Thank you for the information Monty.

Gary

On Sat, Jun 13, 2020 at 8:06 PM Monty McGraw <mmcgraw74@gmail.com>
wrote:

Gary,

The DDU manual does not have a power supply schematic - it just says
contact Power One :(

I found this website - he indicates most Power One supplies have a very
similar schematic as they are typically linear supplies:

https://www.djerickson.com/p1hack/




--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247



--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247




Re: Tek 4041 GPIB Controller

Gary Robert Bosworth
 

Monty: Is there any way I can get a copy of your 4041 DDU manual? I never
did get one and I have been winging it for years.

Gary

On Sun, Jun 14, 2020 at 10:11 AM Gary Robert Bosworth via groups.io
<grbosworth=gmail.com@groups.io> wrote:

Thank you for the information Monty.

Gary

On Sat, Jun 13, 2020 at 8:06 PM Monty McGraw <mmcgraw74@gmail.com> wrote:

Gary,

The DDU manual does not have a power supply schematic - it just says
contact Power One :(

I found this website - he indicates most Power One supplies have a very
similar schematic as they are typically linear supplies:

https://www.djerickson.com/p1hack/




--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247



--
Gary Robert Bosworth
grbosworth@gmail.com
Tel: 310-317-2247


Re: A Drop-In Replacement for the U800 (2400 scopes)

victor.silva
 

Some of the U800s are repairable especially the ones that fail by the horizontal creeping slowly to the left as the scope warms up.

I posted a thread back in 2013 about three U800s that I baked:
https://groups.io/g/TekScopes/message/82320

Three of them were resurrected. In fact I put one of them in my bench 2465B in 2013 and it's still working fine to this day!

--Victor


Re: Tek 11000 Series Scope

 

Hi Larry,
I have an 11403A.
Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Larry McDavid
Sent: Friday, June 12, 2020 10:57 PM
To: TekScopes Mail List (New: groups.io) <TekScopes@groups.io>
Subject: [TekScopes] Tek 11000 Series Scope

Does anyone here have a Tek 11000 series scope in use?

--
Best wishes,

Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)





--
Dennis Tillman W7pF
TekScopes Moderator


Re: Am I doing it right?

victor.silva
 

It is a large unit also I would not buy all these components separately.
If you do you will spend hundreds of dollars.

I found my unit for less than $100, fully loaded with boards, probes, clips and a few ROM packs.
It does require time, so if you need it right now, waiting may not be an option.

--Victor


Re: Am I doing it right?

Jan Weber
 

If you're willing to sacrifice the space on your bench you should consider
a HP1652B.

For my taste it has some advantages. You can load disassemblers into the
machine by floppy. You do not need to mess around with ROM packs. It has a
built in digital scope.

https://www.rudiswiki.de/wiki9/CategoryLogicAnalyzer

Regards

Jan

Jim Ford <james.ford@cox.net> schrieb am So., 14. Juni 2020, 22:43:

Jan Weber is correct about space. I've sent you a private message on
this and other stuff.

Jim Ford

------ Original Message ------
From: "Ondrej Pavelka" <info@vintageaudiorepairs.eu>
To: TekScopes@groups.io
Sent: 6/14/2020 1:24:18 PM
Subject: Re: [TekScopes] Am I doing it right?

So I'll need to find the chassis and two acquisition card and build the
superpack and buy the probes.
The initial cost looks low but by the time I add probes acquisition cards
etc I'm on several hundred dollars. The microprocessor support is really
great, it covers everything I use and good 95% with only two acquisition
cards.
Still were talking about 100EUR for chassis 100 EUR per acquisition card
and similar 100EUR for probes. Then there is so many other probes and
varieties one can easily throw 1000 at it and still not be done with it.
On
the other hand if could sit nicely on the top of the 2445B

On Sun, 14 Jun 2020, 21:51 Jan Weber via groups.io, <jancarlweber=
googlemail.com@groups.io> wrote:

A Tektronix 1241 is not exactly space-saving...

Regards

Jan Weber

Ondrej Pavelka <info@vintageaudiorepairs.eu> schrieb am So., 14. Juni
2020,
21:19:

> Roy,
> I noticed I made a typo it is DS2072 not 2272
>
> On Sun, 14 Jun 2020, 21:04 Ondrej Pavelka, <
info@vintageaudiorepairs.eu>
> wrote:
>
> > Yes I have unlocked it to gain all features and more speed
> >
> > On Sun, 14 Jun 2020, 21:00 Roy Thistle, <
roy.thistle@mail.utoronto.ca>
> > wrote:
> >
> >> On Sun, Jun 14, 2020 at 06:33 AM, Ondrej Pavelka wrote:
> >>
> >> >
> >> > I have Rigol 2272
> >> >
> >> Hi Ondrej:
> >> Rigol had the 2000 series 2Gs scopes, from 70 MHz bandwith up to
300
> >> MHz... what's a 2272?.... I'm speculating you have an unlocked
2272A?
> >> Regards and best wishes.
> >> Roy
> >>
> >>
> >>
> >>
>
>
>
>








Re: DSA 602 "partial enhanced accuracy" at each startup

 

On Sun, Jun 14, 2020 at 10:34 PM, David DiGiacomo wrote:


Definitely a bummer when the final firmware version has a serious bug :(
Strange ..... I have two DSA602 non-A with 2.23 and neither of them do this unless the plugins
has been changed during power off.
/Håkan


Re: Am I doing it right?

Jim Ford
 

Jan Weber is correct about space. I've sent you a private message on this and other stuff.

Jim Ford

------ Original Message ------
From: "Ondrej Pavelka" <info@vintageaudiorepairs.eu>
To: TekScopes@groups.io
Sent: 6/14/2020 1:24:18 PM
Subject: Re: [TekScopes] Am I doing it right?

So I'll need to find the chassis and two acquisition card and build the
superpack and buy the probes.
The initial cost looks low but by the time I add probes acquisition cards
etc I'm on several hundred dollars. The microprocessor support is really
great, it covers everything I use and good 95% with only two acquisition
cards.
Still were talking about 100EUR for chassis 100 EUR per acquisition card
and similar 100EUR for probes. Then there is so many other probes and
varieties one can easily throw 1000 at it and still not be done with it. On
the other hand if could sit nicely on the top of the 2445B

On Sun, 14 Jun 2020, 21:51 Jan Weber via groups.io, <jancarlweber=
googlemail.com@groups.io> wrote:

A Tektronix 1241 is not exactly space-saving...

Regards

Jan Weber

Ondrej Pavelka <info@vintageaudiorepairs.eu> schrieb am So., 14. Juni
2020,
21:19:

> Roy,
> I noticed I made a typo it is DS2072 not 2272
>
> On Sun, 14 Jun 2020, 21:04 Ondrej Pavelka, <info@vintageaudiorepairs.eu>
> wrote:
>
> > Yes I have unlocked it to gain all features and more speed
> >
> > On Sun, 14 Jun 2020, 21:00 Roy Thistle, <roy.thistle@mail.utoronto.ca>
> > wrote:
> >
> >> On Sun, Jun 14, 2020 at 06:33 AM, Ondrej Pavelka wrote:
> >>
> >> >
> >> > I have Rigol 2272
> >> >
> >> Hi Ondrej:
> >> Rigol had the 2000 series 2Gs scopes, from 70 MHz bandwith up to 300
> >> MHz... what's a 2272?.... I'm speculating you have an unlocked 2272A?
> >> Regards and best wishes.
> >> Roy
> >>
> >>
> >>
> >>
>
>
>
>




8681 - 8700 of 176755