Date   

Wanted! 2215A Front Panel Cover

Clif Power
 

Still looking for Tek p/n 200-2520-00 Protective Front Panel Cover for
a 2215A. Anyone have one available that is in decent condition?
Thanks.
Clif


Re: Mysterious component in a Tektronix 547 trigger circuit

Stan & Patricia Griffiths <w7ni@...>
 

From the description you have given, I cannot identify the part. If you can
send me a picture of it maybe that would help. I am thinking it may not be
an original part installed by Tek.

Stan
w7ni@easystreet/com

----- Original Message -----
From: "Aur�lien Defrance" <aurelien.defrance@tiscali.fr>
To: <undisclosed-recipients:>
Sent: Monday, July 19, 2004 7:40 AM
Subject: Mysterious component in a Tektronix 547 trigger circuit


Dear Sir,

I would like to identify a bipolar component made up of a pearl (2 mm in
diameter) which comprises orange, gray and black colors. This component
is located in a Tektronix 547 trigger circuit. I never saw such a
component before !

Thank you for your assistance, yours sincerely.

M. Aur�lien Defrance

--
M. Aur�lien Defrance
9, rue de la Tour
Esc. A, Appt. 38
75116 Paris, France
Domicile : 01 45 20 34 23
Portable : 06 08 67 14 01
Courriel : aurelien.defrance@tiscali.fr


Re: Serial numbers

Stan & Patricia Griffiths <w7ni@...>
 

That serial number for a 575 sounds like one made in Japan, at
Sony-Tektronix . . . maybe . . .

Stan
w7ni@easystreet.com

----- Original Message -----
From: "Craig Sawyers" <c.sawyers@tech-enterprise.com>
To: "Tekscopes" <TekScopes@yahoogroups.com>
Sent: Monday, July 19, 2004 1:35 AM
Subject: [TekScopes] Serial numbers


Morris, that certainly must be the case. There's no way Tek built
anywhere near that many of them, and they predated the 'production
series' style Bxx + xxxx numbers.
With an odd and rather nice statistical quirk, my UK-built 575 curve
tracer
is serial number 100575.

Craig





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Re: 519 (Useful Equipment)

Stan & Patricia Griffiths <w7ni@...>
 

Hi Gang,

I was finally inspired to go check the 519 Mod Summary to see the highest
serial number they make reference to in that document. That number was
001630. The first 519 was 000101 so that means somewhere around 1550
instruments were built. I do not think any were built anywhere but
Beaverton. I can also confirm that a new front plate that goes in front of
the CRT screen was shipped with each replacement CRT. Each of these had the
measured risetime of the CRT and CRT serial number (I think) engraved (or at
least lettered in some way) on them. I can remember seeing these CRT's
being checked out in the Manufacturing Test Department specifically for
Customer Service stock to sell to customers as replacements. That CRT was
something like $1000 in 1961 which was considered a HUGE amount of money for
a CRT at the time.

Stan
w7ni@easystreet.com

----- Original Message -----
From: "Fred Olsen" <fwolsen@execpc.com>
To: "Tekscopes" <TekScopes@yahoogroups.com>
Cc: "Fred Olsen" <fwolsen@wi.rr.com>
Sent: Sunday, July 18, 2004 9:11 PM
Subject: Re: [TekScopes] Re: 519 (Useful Equipment)


Morris Odell wrote:
I just looked at the photo again and it is probable that the serial # in
the photo is just the CRT and not the scope. The scope photo shows one
of those serial number "slugs" on the upper right of the front panel.
Morris, that certainly must be the case. There's no way Tek built
anywhere near that many of them, and they predated the 'production
series' style Bxx + xxxx numbers.

Even so, 36137 is (to me anyway) a surprisingly high CRT S/N. My #398
has CRT S/N 920. I can't recall but there may be a note on the unit to
the effect that the CRT was replaced. If so I have no way to ascertain
if the data mask was also changed then as it should have been. One
could hope, since the rated deflection and rise time factor into
measurements.

Stan, if you copy, do you have any idea how many 519s there were?

(Uh oh; seems as though we're descending from trivia to minutiae again!)
;<))

Fred
--
NOTE: Email address will change as above effective 1 Aug 04.

<><
--
Outgoing checked by Norton AV






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Re: Useful Equipment, Not Just Museum Pieces or Collectors Items

Stan & Patricia Griffiths <w7ni@...>
 

That's an awfully high serial number for a 519. It is either a misprint or
someone has changed it along the line. During manufacturing, serial numbers
were often written directly on the front subpanel with a marking pen. This
info is not generally well-known but it was a way to identify a scope with
an obliterated or changed serial number. So if you want to remove the front
panel, you may discover something new and interesting about your 519 . . .

Stan
w7ni@easystreet.com

----- Original Message -----
From: "morriso2002" <morriso@vifm.org>
To: <TekScopes@yahoogroups.com>
Sent: Sunday, July 18, 2004 3:29 PM
Subject: [TekScopes] Re: Useful Equipment, Not Just Museum Pieces or
Collectors Items



Only useful as collector's items or museum pieces I would think.
Eh? Since when? Those should still be useful today.
Others have written very well about why the 519 is no general purpose
scope! An additional reason is the 125 ohm input impedance and the
special GR connectors it uses which are very rare. To avoid pulse
distortion or loss, any input would have to be matched to 125 ohms.

I would only add (pedantically) that the input is not connected
directly to the upper vertical distributed plates but through the
massive coiled aluminium delay line. The trigger pickoff is at the
input connector and the delay line is there to allow the timebase to
get going before the signal hits the CRT. The 519 is the only Tek
scope I know with asymmetrical deflection.

For the record, mine is S/N 36137. That's a very high number compared
to those that others have posted. I got it from a surplus dealer here
in Melbourne Australia. I've heard tales of "piles" of them appearing
at junk sales in Oz years ago but have never heard of anyone with
another one down here.

Nuclear testing in Australia was done by the British - maybe they
bought in 519s for the purpose but probably not. Having worked on it
occasionally, I like the idea of 1950s British electronics
(Solartron, Eddystone, Marconi etc) getting blown up when the gadget
went off :-)

Uncle Fester for President!
We want him too! - we're having an election soon :-)

Morris





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Re: Tektronix 317 Question (NE-23 vs NE-2 Neon Lamps)

Stan & Patricia Griffiths <w7ni@...>
 

Hi Carl,

The main difference between NE-2's and N-23's is that the NE-23's had a small dot of radioactive material painted on them during the manufacturing process to help them "fire". NE-2's tended to not "light" sometimes, even when the proper voltages were applied. So the switch from NE-2 to NE-23 in most applications was because of reliability. This means NE-2's will generally work just fine in place of NE-23's. I suspect today's extreme environmentalists dislike the radioactivity associated with NE-23's which is probably why you can't find them anymore.

Stan
w7ni@easystreet.com

----- Original Message -----
From: Carl E. Davidson
To: Stan Griffiths
Sent: Sunday, July 18, 2004 2:29 PM
Subject: Tektronix 317 Question (NE-23 vs NE-2 Neon Lamps)


Hi Stan:

Can you answer the following question about the 317:

NE-23 vs NE-2 Neon Lamps for Preventing Grid-to-Cathode Shorts
While looking through the 317 modification summary I
came across a mod (# 9464) where they're adding a
NE-23 neon lamp between the grid and cathode of V43A,
to prevent a possible grid-to-cathode short. I understand
how this works - my question is can a NE-2 be used in place
of an NE-23 in this application. NE-2s are still readily available
everywhere, but I have be unable to locate any NE-23s.

Regards,
Carl


Re: Type 519

Dave Brown <tractorb@...>
 

Given all the recent 519 related posts, here's the text of a possibly
related cross-post (from the GB list) someone may be interested in or
perhaps able to shed some light on?

*************
I found a piece of apparatus that has no tubes in it but was probably used
with a tube device, if nothing else than a CRT. The box has a rotary switch,
a bunch of adjustable coils, various BNC ports, sampling ports, adjustments
and a pair of "to CRT Forward Plates" leads with GR connectors on the ends.
The box reads "ROSSI INJECTION BOX, SCOPE-3344".

Surfing around for "Rossi", "CRT" and so on turned up a few government lab
hits which mention Rossi Analysis or Rossi Technique which evidently is used
in certain nuclear physics experiments (this thing must be ex-LLNL, maybe).
Box has an EG&G service sticker dated '76.

Anyone know ROSSI? what scope this was used with? Anyone NEED one such
injection box?

Brad
alihernlem@hotmail.com

****************

DaveB
Christchurch, NZ


Re: 485 CH1 bandwidth ?'s....

John Miles <jmiles@...>
 

I seem to remember there's a fuse, or a circuit breaker, or something like
that in the 50-ohm input circuitry of the 485. It may need to be replaced
or reset.

A 485 in good shape is probably my all-time favorite Tek scope.

-- john KE5FX

-----Original Message-----
From: Deane E. Kidd [mailto:dektyr@teleport.com]
Sent: Friday, July 23, 2004 1:58 PM
To: TekScopes@yahoogroups.com; knutt8039
Subject: Re: [TekScopes] 485 CH1 bandwidth ?'s....


Hi:
How are you measuring the bandwidth? What bandwidth are you getting?
----- Original Message -----
From: knutt8039
To: TekScopes@yahoogroups.com
Sent: Friday, July 23, 2004 8:26 AM
Subject: [TekScopes] 485 CH1 bandwidth ?'s....


I have a 485 that only fails CH1 bandwidth in the 50ohm range.
Everything else on the whole scope works great. Does anybody know
what is causing this problem and what I can do to fix it? Without
replacing whole assemblies? Is there an adjustment that the manual
does not mention? Any help would be most appreciated.

-Charles


Re: 485 CH1 bandwidth ?'s....

Deane E. Kidd <dektyr@...>
 

Hi:
How are you measuring the bandwidth? What bandwidth are you getting?

----- Original Message -----
From: knutt8039
To: TekScopes@yahoogroups.com
Sent: Friday, July 23, 2004 8:26 AM
Subject: [TekScopes] 485 CH1 bandwidth ?'s....


I have a 485 that only fails CH1 bandwidth in the 50ohm range.
Everything else on the whole scope works great. Does anybody know
what is causing this problem and what I can do to fix it? Without
replacing whole assemblies? Is there an adjustment that the manual
does not mention? Any help would be most appreciated.

-Charles


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Re: Type 519 scope S/Ns

Mattias Rickardsson
 

I wrote:

From: Jim Reese <nfeinc@yahoo.com>

I have 519 S/Ns 735 and 1394 in my collection if
anyone is keeping score. Both came from an old
electronics/lab supply wholesaler (Research Equipment
Inc.) in Dayton, Oh.
If I remember correctly, mine are all below #999.
(I'll check it out more precisely when I get back home.)
My Type 519 serial numbers are:

528 (scope), 2078 (CRT)
851 (scope), 33492 (CRT) (Quite high number for the CRT!)
157 (scope), _____ (CRT) (CRT serial not filled in!)


/mr


Re: Type 519 Gigahertz scope; Smithsonian?

Ashton Brown <ashton@...>
 

Heh..

Well, I think.. I have an idea of scoper's ID.. Or somebody else is practising advanced Fatherland Security pastimes :-�

Yup, in borrowed "mess dress" uniform + "In This Style 10/6";
'twas a gala with Nobelists galore. Small anecdote re Glenn Seaborg (discoverer of many trans-Uranics + much more, incl. Govt honcho status. Al Ghiorso remains the King of transuranics fabrication, however).

Feeling somewhat attuned to the idea of dismantling a [certain Other] warfare adventure du that jour.. I opined over the champagne ~
"Ja, Ich bin vom milit�rischen industriellen Komplex. Ve haf decided zat diese 'Heavy Ions' can make fine new weapons fir eine Blitzkrieg.."
Reply ~ "Yes, and you're only a little crazy" (with a bit of a twinkle).

{sigh} In that regard and the timing of this little snapshot's appearance here: deja vu all over again. Nostalgia AIN'T what it used to be :(


Ashton

PS
Let me put it this way, re a recent NPR commentator (author) about the fact that "'stupidity' can reside quite nicely within the demonstrably 'intelligent'":
when ya gotta yell at a er Nobelist about NOT putting hot targets in the (personnel) "beam shack" .. you know that the species is In Trouble.




Fred Olsen wrote:

scoper796 wrote:


Would you be this Ashton Brown?
http://george.lbl.gov/ImgLib/COLLECTIONS/BERKELEY-LAB/PEOPLE/INDIVIDUALS/index/97502093.html
No wonder the SI is (or isn't) interested!
Now THAT'S a picture! ;<) Nevertheless, he was surely in distinguished company at LBNL.
http://imglib.lbl.gov/cgi-bin/ImgLib/displaytag/BERKELEY-LAB/ACCELERATORS/BEVALAC/tags/97502283?both

I've come to the conclusion that there's quite an interesting group on this list; myself excluded, of course.

Fred

<><
--
Outgoing checked by Norton AV





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485 CH1 bandwidth ?'s....

knutt8039 <cswanson@...>
 

I have a 485 that only fails CH1 bandwidth in the 50ohm range.
Everything else on the whole scope works great. Does anybody know
what is causing this problem and what I can do to fix it? Without
replacing whole assemblies? Is there an adjustment that the manual
does not mention? Any help would be most appreciated.

-Charles


485 Died

ehsjr@...
 

Last nite my 485 was working fine - I set it up to monitor
a signal and went to bed. This morning, it's dead. No trace,
no scale illumination, no fan. Checked all the obvious stuff:
the fuse is good, wall receptacle has power, line cord measures
0 ohms on each wire to it's respective prong. I measured ~60 K
across the line cord prongs, with the switch on, open with it off.

I'm ordering a manual (on CD rom) which will take a few days
to get here. In the mean time, are there any known problems
that cause this? Any tips? An internal fuse or circuit breaker?

Ed


Re: Type 519 Gigahertz scope; Smithsonian?

Ashton Brown <ashton@...>
 

Heh..

You rang?

My first accelerator was the 340 MeV electron synchrotron (LBL). (Ed McMillan's baby.) On its retirement, the Smithsonian wanted to make a display of an "atom smasher". [Wood mockup of the heavy magnets, etc]. I borrowed a friend's Ampex then-prof. tape recorder to make an audio tape of the thump-thump noises of magnetostriction at 6 pps. They played this for some years, I'm told..

When I went by the Institution for usual reasons, I inquired about the 340 MeV. Exhibit long since mothballed :(
Don't suppose anyone -here- ever saw it ?? {sniff} (You'd remember the thumps, I wot)

But surprisingly.. on my enquiry, soon came along a umm researcher? Elevator; then led me through a maze of corridors Upstairs. Ha! - the Executive john at last..
He Wanted to Know about "operations", anecdotes and such (can you imagine? - decades after demise). Thought he was putting moi on .. but no .. He Was Taking Notes! er, cha cha cha

Anyway, I saw that I didn't 'understand' their MO / attitudes towards their stuff! And I still don't, but -- I hope that you approach someone there re first, a small education about the Old Tek; its [yes, perhaps] Uniqueness: the Standard of the World, and all over that world - in this niche, for a long time. And unlike all current bizness: maybe the last to earn State-of-Art in All Products, as appellation [?]

Our bias aside - I can't think of another mere 'Company' with such a heritage. I think many of the young can't imagine that there Was such a US Company, given their current bean-counter experience of that milieu.
(Just contrast the quite polarized "impression made by er 'Windows'" - also spread all over a different world, VS: Tek. QED)


Ashton
20 mins of Celebrity-time :-�


Stan & Patricia Griffiths wrote:

I have to admit that my last trip to the Smithsonian was about 30 years ago,
but at that time I did not see a SINGLE Tek scope on display there. Has
anyone here made a more recent trip and seen ANY Tek instruments in the
Smithsonian? I have actually thought about leaving my collection to the
Smithsonian but I have no indication what so ever that they would appreciate
it, even slightly.

I, however, have personally been on display in the Smithsonian! Yes, during
that trip, I went by the display of an operating ham station and noticed an
open operating position. I showed my license and was permitted to operate
the cw station that was on display there so I, personally, was a part of the
"live" display of ham radio.

They may not have a Tek scope for display, but they did, for a few hours,
have the one and only Stan Griffiths on display!

Stan
w7ni@easystreet.com

----- Original Message -----
From: "Ashton Brown" <ashton@vom.com>
To: "Tekscopes" <TekScopes@yahoogroups.com>
Sent: Thursday, July 15, 2004 10:54 PM
Subject: Re: [TekScopes] Type 519 Gigahertz scope; opinions & info & prices?



Welcome, Mattias

Perhaps you've already searched (?) and found on this list some
discussion of the circuitry, commentary and links to pix of the
internals of the 519. Believe this thread was ~ 2 years ago.

I've seen a 519 in use (probably one of a very few as could be afforded,
even at LBL). In addition to nuke tests, it was also of some use re
photomultiplier particle detectors at accelerators; to wit - at the
Bevalac complex. (6.2 GeV proton accelerator, later - heavy ions up to
2.1 Gev/c). Anything to see more BW, of course/./

You didn't mention -- any of yours operational or look like they might
become?

I understand that some, many? have been gutted for Ham-radio use of the
expensive RF triode; just as many 5xx series are - for their saleable
'Bugle Boy" Telefunken vac tubes, for audio use. Such is the zeitgeist.

I hope that the Smithsonian has at least one of these.


Ashton


Re: Type 519 Gigahertz scope; opinions & info & prices?

Stan & Patricia Griffiths <w7ni@...>
 

I have to admit that my last trip to the Smithsonian was about 30 years ago,
but at that time I did not see a SINGLE Tek scope on display there. Has
anyone here made a more recent trip and seen ANY Tek instruments in the
Smithsonian? I have actually thought about leaving my collection to the
Smithsonian but I have no indication what so ever that they would appreciate
it, even slightly.

I, however, have personally been on display in the Smithsonian! Yes, during
that trip, I went by the display of an operating ham station and noticed an
open operating position. I showed my license and was permitted to operate
the cw station that was on display there so I, personally, was a part of the
"live" display of ham radio.

They may not have a Tek scope for display, but they did, for a few hours,
have the one and only Stan Griffiths on display!

Stan
w7ni@easystreet.com

----- Original Message -----
From: "Ashton Brown" <ashton@vom.com>
To: "Tekscopes" <TekScopes@yahoogroups.com>
Sent: Thursday, July 15, 2004 10:54 PM
Subject: Re: [TekScopes] Type 519 Gigahertz scope; opinions & info & prices?


Welcome, Mattias

Perhaps you've already searched (?) and found on this list some
discussion of the circuitry, commentary and links to pix of the
internals of the 519. Believe this thread was ~ 2 years ago.

I've seen a 519 in use (probably one of a very few as could be afforded,
even at LBL). In addition to nuke tests, it was also of some use re
photomultiplier particle detectors at accelerators; to wit - at the
Bevalac complex. (6.2 GeV proton accelerator, later - heavy ions up to
2.1 Gev/c). Anything to see more BW, of course/./

You didn't mention -- any of yours operational or look like they might
become?

I understand that some, many? have been gutted for Ham-radio use of the
expensive RF triode; just as many 5xx series are - for their saleable
'Bugle Boy" Telefunken vac tubes, for audio use. Such is the zeitgeist.

I hope that the Smithsonian has at least one of these.


Ashton

Mattias Rickardsson wrote:

Hi all Tek fellows,
my first post to this list goes here:


By accident I happened to become the owner of some Tek 519 scopes
this wonderful monday. Since I know very little about it,
and as the web seems very scarce about this particular model,
I'm asking you instead:

Any opinions about this scope?

Are they very uncommon? (not many words about them on the web)

Are they generally desirable or unwanted / useful or unuseful?

What prices could be realistic for these scopes?


Related links:
http://www.pyromain.com/scopes/510/519.html
http://www.elecdesign.com/Articles/ArticleID/4016/4016.html


I'm thankful for all your feedback.


Best regards

Mattias Rickardsson
Gothenburg, Sweden




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Re: tek 4041 controller

Dave Wise
 

Sorry, I don't have what you want, but I do have a
small memory to share. I worked in T&D (Terminals
and Displays), which was near the department that
made the 4041. I gather they had a hard time getting
it through the final stages of the internal "Product
Shipment Release" review process, because one engineer's
cube sported a poster of the end of a marathon, exhausted,
sweat-dripping runners breaking the tape and collapsing.
Someone had taken a marker and captioned it: "4041 PSR".

Dave Wise

-----Original Message-----
From: ericapple2004 [mailto:elbicon@pandora.be]
Sent: Thursday, July 22, 2004 1:35 AM
To: TekScopes@yahoogroups.com
Subject: [TekScopes] tek 4041 controller

Hello group,

Anybody have experience with the 4041 controller?
I have one of the latest models , opt 1 and opt 10 and opt 30
so it has al the optional rom packs on board ,
however i do not have the rom drawer ,
I suppose it is needed to be able to program the 4041, and without it
it is run only .
I noticed a block of dip switches inside ?
Is there a way of programming this one without having the rom drawer?
or is there somewhere out there an image on file of the programming
roms ? and can they be inserted instead op the option pack , so
without the rom drawer ?

Just a hobby that's got out of hand ...

Many thanks,

Erik Paret






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tek 4041 controller

ericapple2004 <elbicon@...>
 

Hello group,

Anybody have experience with the 4041 controller?
I have one of the latest models , opt 1 and opt 10 and opt 30
so it has al the optional rom packs on board ,
however i do not have the rom drawer ,
I suppose it is needed to be able to program the 4041, and without it
it is run only .
I noticed a block of dip switches inside ?
Is there a way of programming this one without having the rom drawer?
or is there somewhere out there an image on file of the programming
roms ? and can they be inserted instead op the option pack , so
without the rom drawer ?

Just a hobby that's got out of hand ...

Many thanks,

Erik Paret


Re: Repair of Tek 2213s

Jeff W <vwthingy@...>
 

--- In TekScopes@yahoogroups.com, Mark KAHRS <kahrs@c...> wrote:

A certain friend of mine teaches at a certain university; their lab
has numerous Tek 2213s. He would like to refurbish a number of
these,
preferably on the cheap (new switches, new CRTs, etc). Can anyone
recommend a commercial establishment that might take 'em?

Unless you think this is of general interest, please reply
privately.

Thanks!
Hi Mark,

Don't know if anyone has replied, but it is not viable to refurbish
these scopes; they are virtually worthless even in good condition,
and you cannot get new parts for them anyway.

Both the 2213 and it's dual timebase brother the 2215 have a really
crappy power supply with a triac pre-reg. Tek made a mod kit years
ago to convert to a switched MOSFET prereg like the later 2213A and
2215A's, but you cannot buy this mod kit anymore. The triac prereg's
hummed loudly; really annoying.

The 2213A and 2215A's are much better scopes; they use the same
mainboard as the popular 2235. The 2215A is a great hobbyist scope
as they perform well, are reliable, and usually go pretty cheaply.

Jeff


2432 Codes

hex2pic <puddintain@...>
 

Hello Denis and Listers,
Many thanks!. OK, with that info you just posted, I swapped the CCD
modules and their respective modules that sit just ahead of them, as
a pair. Earlier I had swapped one module at a time, only. Bingo, the
problem remains exactly the same but swaps nicely over to channel 1
with the exact same error codes (after running self cal).. so it
seems the trouble does lie in the modules themselves and not the
circuit board. Hmmmm, I have a 2430 also, in non-complete condition
but it has these similar modules (albeit the utterly wrong part
numbers, etc) but I think maybe I'll pop those into this 2432
tomorrow and see what happens, just for the temptation of it!.. When
repairing this 2432 the first time I recall swapping a lot from the
2430 chassis for quick comparisons..no smoke then..(haha)
Thanks again for the information. You are certainly amazing!
Dave in Tucson


Re: 2432 codes

Denis Cobley <denis.cobley@...>
 

Hi Dave
No hidden numbers, just (at the time) bleeding edge technology.
The CCD's were individually matched to each channel and it's surrounding
components.
You needed to run special test software which tested all sorts of parameters
met specs.
There were only 2 adjustments for each CCD and the CCD performance window
was quite small to get them to pass all tests.
We normally had a dozen to swap and mix to find 2 that would be happy in
that particular board.
Each version of these scopes had different CCD's as well.
2430/2430A used 165-2074-00 to 05 (00 to 02 were used in 2430 pre an upgrade
which changed many parts to suit the improved CCD's (03-05).
The 2432 used 165-2206-00 and the 2432A/2440 used 165-2???-0? (this is from
memory and I can't recall that one)

Regards
Denis Cobley

----- Original Message -----
From: "hex2pic" <puddintain@hotmail.com>
To: <TekScopes@yahoogroups.com>
Sent: Thursday, July 22, 2004 12:35 AM
Subject: [TekScopes] 2432 codes


Hello!
There's a very, VERY good posting about interpreting the FAIL codes
on the 2430, 2432 DSOs from a group member (dennis.cob....) wherein
he also cautions that the codes 7000,8000,9000 probably point to a
bad CCD with very grim hope of fixing it. Based on that posting, I am
thinking this is because the chips have some embedded ID number that
is also stored in ROM somewhere at the time of mfg?...that is my take
on it. If this is correct then you can't just swap that chip from one
channel to the other for diagnostics because the computer will reject
it immediately. If this ID is stored in ROM, couldn't the particular
ROM chip be externally copied and then rewritten with edited code
bearing the 'new' serial number from a replacement chip? Is there any
way to do this job properly or improperly (get scope working without
serious calibration, just get it working for general purpose)? I
suppose the other half of the problem would be finding out the ID
number of the replacement chip is too..

I've got a 2432 and channel #2 started failing on powerup test,
intermittently and then worse, and now after a couple weeks it seems
permanently out with the 7000,8000, and 9000 FAIL codes on channel
#2. It crept in rather than just popping up bad one day.. maybe it is
not the CCD? I'm hoping someone will have a comment or idea to kick
around on this topic.
Thanks for Reading!
Dave, in Tucson





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