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Hi, Miroslav,

* REPLY SEPARATOR *

On 07-Mar-04 at 23:08 Miroslav Pokorni wrote:

Oh, 2732 will work, just make sure that un-used address bit (A11, pin 21)
is
nailed down, so that it is lower half of PROM that is read. As for 2764,
that is a different proposition because it is 28 pin DIP (four pins more
than 2716 or 2732), but doing a jerry rig to translate pins would make it
usable.

You have also to watch programing voltage. Some of early PROMs used 21V,
then came 15 V, then 12 V. You can program 12V device on 15V programmer
setting, but there is no promise that device will not be damaged.

<g> Programming is the least of my worries. When Data I/O designed the Unisite, they designed it to be 'pin driven.' This means that each pin is, according to whatever algorithm you're using, automatically and accurately programmed for Vpp, Vcc, and a bunch of other alphabet soup as needed.

Thanks for the heads-up.


-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies --
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

Greetings,.....nuts!!!......just when I find an item that slipped
past most..........there will Miroslav bidding against me!!!!!
I have another good search secret tip.........but it's SECRET!!!
Dave

(I deleated the rest of the post below as to the "tip" Miroslav
responded to, in hopes that only he saw it.

--- In TekScopes@..., "Miroslav Pokorni"
<mpokorni2000@y...> wrote:

That is pretty good tip, I never tried it, but it is worth doing

it.

Regards

Miroslav Pokorni

Interesting and good price rare item lurking on eBay at the moment. A 7514
storage scope - I had no idea that Tek did split screen storage into the
7000 series until I saw this. 90MHz bandwidth.

Anyway with an interesting set of plug ins, he has it on for $75 buy-it-now.
Item number is 3802548425

Craig

Perhaps 35 years ago I received a letter >from a company field rep< in
which he misspelled it!

I worked for a company called Scientific Generics at one stage, and received
a letter from a pharmaceuticals company addressed to Cystic Genetics.
Sounded very painful to me...

Craig

I once saw a list composed by the Tektronix mail room of all the various
ways "Tektronix" had been spelled on letters that still made to
the company.
Unfortunately, I did not keep a copy of it. I just laughed a lot! There
are at least 30 ways to misspell it.

It seems even worse than my name. I've had main come to Sawyer, Saywer,
Saywers, Saunders, Swyear, Sowear etc etc. My off the cuff reply when
someone on the phone asks how to spell my name is to say "Like Tom, but with
an S on the end", but it seems that the adventures of Tom Sawyer isn't a
standard text at school these days...

Craig

Oh, 2732 will work, just make sure that un-used address bit (A11, pin 21) is
nailed down, so that it is lower half of PROM that is read. As for 2764,
that is a different proposition because it is 28 pin DIP (four pins more
than 2716 or 2732), but doing a jerry rig to translate pins would make it
usable.

You have also to watch programing voltage. Some of early PROMs used 21V,
then came 15 V, then 12 V. You can program 12V device on 15V programmer
setting, but there is no promise that device will not be damaged.

Another consideration is speed, but as densities went up, so did the speed.
If PCB is poorly decoupled, higher speed might work against you, but that is
not very likely to happen.

Regards

Miroslav Pokorni

That is pretty good tip, I never tried it, but it is worth doing it.

Regards

Miroslav Pokorni

Ata boy, no one in this group is like you, move right to the head of the
class.

Regards

Miroslav Pokorni

I once saw a list composed by the Tektronix mail room of all the various
ways "Tektronix" had been spelled on letters that still made to the company.
Unfortunately, I did not keep a copy of it. I just laughed a lot! There
are at least 30 ways to misspell it.

Stan
w7ni@...

OK, if you haven't caught on to this tip yet:

I have a favorite eBay search for (Techtronics, Tektronics,
Techtronix). These listings tend to go for less, since a lot of
potential buyers fail to search for mispellings. ;)

-Howard
P.S. They also forget to search for misspellings. :)

--- In TekScopes@..., "Christian"
<christianfletcher@b...> wrote:

Tektronix

I apologise for the obvious offence my ignorance and poor

spelling

has caused.

Best Regards

Christian Fletcher

Hi all

I'm building up a pair of flexible extenders for the 7000 series (because
the price is stratospheric on eBay), and was wondering why all but three
connections are made end to end when so few seem to be used by any one
plug-in.

Starting from the list on Mark Kahrs site, which has a lot of connections
listed as not used, I've built up a more complete picture. Most of the
seemingly not used connections are used for the GPIB interface for the
programmable plug-ins (7A16P, 7A29P and 7B90P), and for additional
+5.1V/-5.2V supplies.

Anyway, if anyone would like a copy of the file (Excel) let me know and I'll
pass it on.

Cheers

Craig

The manual has been spoken for

Dave

First email with a pledge of $1.50 to cover mailing gets a an original "Oscilloscope Camera System" manual part number 070-0383-02. Missing front cover and comb binding, the pages otherwise are in excellent condition.

Dave
NR1DX

With thanks to 'Greyhawk,' a pair of firmware image files for the 7B90P programmable timebase are now available. Note that these images are 2048 byte, meaning that they were most likely designed to program into a 2716. Considering that 2716's may be pretty hard to find, advice on whether they'll work in a 2732 or even a 2764 would be welcome.

Keep the peace(es).


-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies --
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal ports?"

Just given a solid state Phillips scope - good condx EXCEPT none of the
half-turn dzus type quick release fasteners that fasten the cabinet top and
bottom to the scope chassis work. The screw heads turn, but they don't
"grab" on anything...

If anybody on the list has any experience with Phillips scopes pls contact
me off-line...

Very best regards,

Tim Urban
N5IIT

Washington Council Ernst & Young


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Do not take a cue from Craig, his feathers get ruffled
too easily.

Not at all - it just sticks right in my craw to see others ridiculed in
front of 1000 strangers, smiley or no smiley.

And in answer to Fred's comment - in response to Christian's original post,
I sent him an off-list reply immediately his query hit the list.

Craig

I have a 100Mhz Hewlet Packard 1740A and one of the
new Fluke Digital combi scopes.

Hello Christian,
Someone said that you worked on car kits. I understand that is enough of a
punishment, you did not have to take on hp 1740A, you paid your dues with
kits. hp 1740 will give you good excercise in setting trigger level, somehow
that thing always wanders around.

Regards

Miroslav Pokorni

I am looking for all valve scope next. Since I am doing a lot of
work with high voltage power supplies and believe that valve
technology it a bit more tolerant than the modern stuff. I was
reading about the comments on lethality of high voltage. I used to
work on laser scanning systems but now in the rail industry. I often
worked on 15Kv and 450 Volts Dc. Don't get much chance of the MCB
tripping either since its rated a 44k Amp.

Best regards Christian.

Do not you have any sense of humor? That is much worse offence then miss
spelling. Do not take a cue from Craig, his feathers get ruffled too easily.

Pardon my curiosity, but with a name like yours I had to ask: are you a
resident of Pitcairn Island, by any chance?

Regards

Miroslav Pokorni

I will second that.

Regards

Miroslav Pokorni

Dear Fred

Thanks to you and the other members for the good advice. No need to
worry I have not been offended by the comments and am glad of the
correction. I have also corrected the spelling on the web site.

I have never used a Tek scope before. They were always out of my
price range when I was younger. So I had to make do with a
telequipment. I have a 100Mhz Hewlet Packard 1740A and one of the
new Fluke Digital combi scopes. I really don't like the Fluke
digital scope its for ever trying to be helpful by changing ranges,
but usually gets it wrong.

I am looking for all valve scope next. Since I am doing a lot of
work with high voltage power supplies and believe that valve
technology it a bit more tolerant than the modern stuff. I was
reading about the comments on lethality of high voltage. I used to
work on laser scanning systems but now in the rail industry. I often
worked on 15Kv and 450 Volts Dc. Don't get much chance of the MCB
tripping either since its rated a 44k Amp.

Best regards Christian.