开云体育

Hello Miro

Best deal is to use an activated flux (acid) you need so little flux on the tip of the solder that you can't even see it. Just tin the nickel plate or stainless of the cell and finish the job with the usual 63/37. The stainless conducts so poorly that it takes practically no heat (in calories) to get the job done. The admonishment not to solder to nicads must have been started by a guy who tried to do it with a 500 watt iron and rosin core solder, will never happen that way. Acid core solder doesn't work very well by the way but the flux that tastes like lemon juice (we use it on our SMT line) works great.

Eric

Do not forget lubricant, it is amazing what a little bit of grease can do
for sliding. I am not sure what would be the best or recommended grease for
those switches, but I would try (thick) silicon grease, I do not think that
you can go very wrong with that choice. Spray silicone would not give you a
durable solution and there is a chance that vehicle in spray (solvent) can
attack plastic.

Regards

Miroslav Pokorni

--- In TekScopes@..., "zenith5106" <hahi@t...> wrote:

--- In TekScopes@..., "Cliff Carrie" <cliffcarrie@h...>
wrote:

I picked up a Tek 017-086 TD pulser a while back.
Does anyone have a manual or data sheet for this pulser? I'm

curious about

flatness and aberrations. What product family was it intended

for?

It's

faster than most of the pulsers I've seen, except for my Tek 284,

and much

more convenient.

Regards,
Cliff

---------
I have browsed through the cataloges from the time (1965 - 1968)

and

have not found it mentioned anywhere. I do have a datasheet but
unfortunately it's only schematic and parts list and no specs. It's
available at .
/Zenith

The link should be (no dot at the
end).
/Zenith

--- In TekScopes@..., "Cliff Carrie" <cliffcarrie@h...>
wrote:

I picked up a Tek 017-086 TD pulser a while back.
Does anyone have a manual or data sheet for this pulser? I'm

curious about

flatness and aberrations. What product family was it intended for?

It's

faster than most of the pulsers I've seen, except for my Tek 284,

and much

more convenient.

Regards,
Cliff

---------
I have browsed through the cataloges from the time (1965 - 1968) and
have not found it mentioned anywhere. I do have a datasheet but
unfortunately it's only schematic and parts list and no specs. It's
available at .
/Zenith

Hello everyone,

Does anyone have an experience with spot welding tabs on a subC size NiCd
batteries? I have a stack of ten batteries which were connected with nickel
plated iron (?) tabs, welded at four spots at each end of tab, but a tab
came loose on one cell.

I was thinking of using large cap (10,000 mictoF or so), charged to 50 V or
so, a suitable switch (perhaps mercury displacement) and short, thick and
solid wires as electrodes. I need to make only four welds, so 'electrodes'
can be consumable.

I do not intend to break any new grounds, looking for someone's prior
experience.

Thank you in advance,

Miroslav Pokorni

Did you notice also all of the duplicate so called positive entries?

Do comments from Victorias_Big_Secrets count? He has got more from her than
anyone else. Most of his feedback is for buying on e bay, rather than
selling.

Regards

Miroslav Pokorni

"(Shown with optional external display.)" Shown where??
-----Original Message-----
From: xaos [mailto:xaos@...]
Sent: Tuesday, March 16, 2004 10:04 AM
To: TekScopes@...
Subject: [TekScopes] This guy must be kidding!


The guy selling this item (TEK TLA612-2P):

has to be either the most incompetent seller or the biggest fraud.
And he has a feedback profile of 75% on 10 items. You must be kidding!

He is also an idiot if expects anyone to bid on this.

-George N2FGX



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Service.

067-0529-00 Calibration Fixture, 1000:1 divider w/switch, BNC(M)clamp
fitting and BNC(F) on ends.

The application for this fixture, that I know of, is gain setting for
differential plug-in 7A22.

Regards

Miroslav Pokorni

I picked up a Tek 017-086 TD pulser a while back. It is self contained and about twice the size of its GR connector. Power is from 2 internal coin cells. Risetime printed on it is <.2ns (200ps). It turns on automatically when a 50 ohm termination is present. I put it together with a GR to BNCm 50 ohm feedthru termination. Plugs directly into a scope input. Of course it can be put on a probe end with suitable adapters.

No muss, no fuss, no 100 volt input pulses needed.

Does anyone have a manual or data sheet for this pulser? I'm curious about flatness and aberrations. What product family was it intended for? It's faster than most of the pulsers I've seen, except for my Tek 284, and much more convenient.

Regards,
Cliff

_________________________________________________________________

Hello Ed,

Here is what I have on TU-5, a data sheet that I got on this list. I have a
hulk of a TU-5 and it does have BNC connectors; perhaps in earlier version
this unit had UHF connectors.

Be careful when connecting the unit to the signal source. What looked
intuitive connector polarity to me, is actually wrong and I connected 10 V
pulses directly to tunnel diode, so now I have a hulk of a TU-5.

Regards

Miroslav Pokorni

Any other test equipment fans going to Dayton? Maybe we can organize
a collective? (I saw Stan there two years ago in the ever dependable
rain)

(And I promise to update my 7K pages, Real Soon Now)

Hi, gang,

With thanks to Guido Kueppers, the following additional file(s) is/are now available on the Blue Feather FTP archive at ftp.bluefeathertech.com.

File name: 12RC11_U140.bin

Path: /pub/electronics/testgear/Tektronix/firmware/124x/ROMS

Version: Unknown

Purpose: This is the image from the EPROM in the parallel communications COMM Pack for the 1240 and 1241 series logic analyzers.

As always, please keep the following restrictions in mind when accessing the archive: (1), There is a five-user limit for anonymous logins at any one time. (2), Download speed is capped at 128Kbps.

Both of these limits are designed to maximize availability of the archive for all, taking into account the limits of my DSL pipe. Regrettably, I cannot yet afford a T1 or F-T1 line.

Access to the archive is best made with a real FTP client program as opposed to a web browser. This is because transfers made through a web browser are often slower, due to translation between the HTTP and FTP protocols. There are plenty of freeware and low-cost shareware FTP clients available. My personal favorite is WS_FTP, by IPSwitch Software, widely available from download sites all over the planet (including Tucows.com and ftpplanet.com).

When logging in, be sure to specify 'anonymous' (spelled out, no quotes) as your user ID. Your E-mail address is preferred as the password, but it is not a requirement (really, just about anything that contains printable ASCII characters will work).

CONTRIBUTIONS: Further contributions to the archive are always welcome, subject to the following conditions.

(1) Whatever you submit must be firmware or software that is NO LONGER SUPPORTED OR SOLD by Tektronix, or it must be directly related to equipment that is no longer supported or sold. Firmware or software relating to CURRENT Tektronix equipment WILL NOT be posted for download unless Tektronix makes the same file(s) publicly available from their own site.

In other words, I don't want any legal troubles. Tektronix has been very generous in allowing me (mainly through not saying 'No') to make this archive available, and I will not do anything to endanger that.

(2) Contributions should be sent via E-mail attachment to 'splicer at bluefeathertech dot com,' and should be archived with any of the common compression utilities, such as Power Archiver, WinZip, Gzip, etc.

(3) The preferred format for EPROM or EEPROM image files is Absolute Binary (Data I/O #16). This helps to guarantee compatibility with the widest possible range of device programmers. HOWEVER -- Other formats, such as Intel Hex or Motorola S-record, may be submitted with a note indicating the format used.

(4) The preferred format for PAL or PLD image files is a standard JEDEC fuse map.

ACCESS NOTE: There are many ISPs who, judging by their behavior, simply do not care about how many spammers, crackers, or other network abusers they host. With this in mind, I maintain an extensive local blocking list, both at the mail server and at the router level, that serves to keep such nastiness out of Blue Feather's LAN.

The flip-side is that such blocking may prevent some of you from E-mailing me, or accessing the archive. I can and will white-list individual addresses, but I cannot do so if I do not know that you tried (and failed) to get through.

If you find that mail from you to me bounces, or that you cannot access the FTP archive, please try my backup address of kc7gr at qsl dot net. Include the error message you received, and I'll see what I can do for you.

Thanks to all for your contributions, your patience, and your interest.


-=-=-=-=-=-=-=-=-=-=-=-
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?"

--- In TekScopes@..., "Craig Sawyers" <c.sawyers@t...> wrote:

Risetime: 1 ns or less into 50 ohm

It uses 153-0038-00 tunneldiode which is a selected 152-0154-00 which
is also the reason Craig didn't have it his list.

That's interesting - thanks! I'll put that one on the list. The
152-0154-00 is used in a number of things, including the TU-5. The diode is
10mA/9pF, giving a switching speed of about 450ps, which is consistent with
the specification. Assuming wiring stray capacitance of 3pF, a composite
switching speed of 600ps comes out of the calculation.

Others interested in a roll-your-own might be interested that this diode is
also in the RM546, RM547, R544, R556, 1S1, 1S2, 21A, 22A, 544, 546, 547,
556, 7B70 and 7B71.

Craig

Didn't realize this stuff was so valuable.
I have a few items I could probably be bribed out of.

Self contained 30ps pulser works



transmission line from same, need to check the diode.


also have a 284 line somewhere in the attic.
its diode is definitely bad.
mike

Risetime: 1 ns or less into 50 ohm

It uses 153-0038-00 tunneldiode which is a selected 152-0154-00 which
is also the reason Craig didn't have it his list.

That's interesting - thanks! I'll put that one on the list. The
152-0154-00 is used in a number of things, including the TU-5. The diode is
10mA/9pF, giving a switching speed of about 450ps, which is consistent with
the specification. Assuming wiring stray capacitance of 3pF, a composite
switching speed of 600ps comes out of the calculation.

Others interested in a roll-your-own might be interested that this diode is
also in the RM546, RM547, R544, R556, 1S1, 1S2, 21A, 22A, 544, 546, 547,
556, 7B70 and 7B71.

Craig

--- In TekScopes@..., "jjartstor" <jj@m...> wrote:

Hello All,

I received a Tektronix Pocket Signal Generator 015-0580-00 with the
465 that I purchased. It has a scope connector on one side
and a short cable with a bnc connector on the other. I'd like to

know

what it's used for. I searched Google and found virtually no info

on

it - except a blurb in Japanese - which had no value to me.

I'm intrigued by it. If anyone knows how to use it, please clue me

in.

Best,
John

-------
John,
I have a couple of those too and I have never given it much thought
what they were used for, I would assume for demo purposes. Anyway I
find them pretty useless. First of all you must connect it to a
TEKPROBE interface (on 11k and most TDS's) to get power. I fired up
one of mine and out came a 5V squarewaves at appr. 32kHz and phase
shifted about 90 degrees.
/Zenith, Sweden

--- In TekScopes@..., "Edward Knobloch" <k4pf@j...> wrote:

Hi, Gang

I picked up a Tek 067-0554-00 tunnel diode pulser.
(There's one for sale on eBay now, it you'd like
to see a photo).

Does anyone have the specs for this unit?
I'd like to know the specified risetime of the tunnel
diode pulser output and the type of tunnel diode used.
There are only a few parts in the box, and should be easy to home-

brew.

Thanks,
Ed Knobloch

---------
Ed, the specs for your little box is:

Output:
Ampl: 200 mV +/-10% into 50 ohm
Risetime: 1 ns or less into 50 ohm
Abberations: +2%,-2% total 4% pp

Input:
+ or - 100 V squarewave capable of 10 mA at 1kHz

It uses 153-0038-00 tunneldiode which is a selected 152-0154-00 which
is also the reason Craig didn't have it his list. The info on the
selection I have says that it is selected with a 100 to 250 ohm
resistor to produce 200 mV pp waveform. Mail me off list if you want
a scan of the schematics and parts list.
/Zenith, Sweden

I've got a working R7844 dual beam mainframe up on eBay.

Maybe somebody on the list needs one.



Bill



__________________________________
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I picked up a Tek 067-0554-00 tunnel diode pulser.
(There's one for sale on eBay now, it you'd like
to see a photo).

It is a little box that goes between a 100 volt square wave
generator and the scope's vertical input, to test the risetime.
The effect of the tunnel diode is to "sharpen" the edge
of the square wave.

Does anyone have the specs for this unit?
I'd like to know the specified risetime of the tunnel
diode pulser output and the type of tunnel diode used.
There are only a few parts in the box, and should be easy to home-brew.

I think a Tek TU-5 tunnel diode pulser is the same thing,
except it uses UHF type connectors instead of BNC.
The manual for the 1A1 (Nuvistor input) plug-in, page 6-9
shows a TU-5 in use to check risetime.

Well, I'd like to say that I had the answer to that, having compiled lists
cross referencing TD's to Instruments to Specifications - but I draw a blank
on that one. I *think* that a later version was made for the PG506
calibration generator - that is called an 067-0681-01 and is specified at
<=125ps. The tunnel diode for this is a 152-0177-02 or -03. The -02 is
10mA, 3pF germanium. The switching time for a Ge TD is about C/(2I) ps so
in this case 3/0.02 = about 150ps, consistent enough with Tek's
specification. The -03 version of the TD might have lower capacitance, but
I don't have figures for this.

The fastest TD's that Tek used were the 152-0383-00, at 50mA, 1.5pF used in
the S51 and S52 TDR pulse heads - which should be capable of 15ps, but
actually do a bit slower than that, because circuit capacitance adds a pF or
two.

Another fast one was the 067-0513-00 pulser, which used a 152-0254-01 diode
with 100mA, 6pF characteristics. Theory says it should do 30ps, which is
what the pulser is capable of (I've measured mine with an S4 head, and even
that involves care and calculation to unravel what you see from the S4's
25ps rise).

As for making a roll-your-own, problem 1 is finding a TD with the right
capability. You could cannibalise an old 7B92 to harvest the right TD.
Next is making sure that the layout doesn't compromise the switching time -
stay capacitance and inductance is a killer.

Cheers

Craig

Brilliant,
Nice job, especially providing an index. If I ask really nicely can you crop the bottom of the pages so it all fills the full space?

Cheers

Robin
In message <c3cd97+kveb@...>, zenith5106 <hahi@...> writes

--
Robin Birch

Hi, Gang

I picked up a Tek 067-0554-00 tunnel diode pulser.
(There's one for sale on eBay now, it you'd like
to see a photo).

It is a little box that goes between a 100 volt square wave
generator and the scope's vertical input, to test the risetime.
The effect of the tunnel diode is to "sharpen" the edge
of the square wave.

Does anyone have the specs for this unit?
I'd like to know the specified risetime of the tunnel
diode pulser output and the type of tunnel diode used.
There are only a few parts in the box, and should be easy to home-brew.

I think a Tek TU-5 tunnel diode pulser is the same thing,
except it uses UHF type connectors instead of BNC.
The manual for the 1A1 (Nuvistor input) plug-in, page 6-9
shows a TU-5 in use to check risetime.

Thanks,
Ed Knobloch

Hello All,

I received a Tektronix Pocket Signal Generator 015-0580-00 with the
465 that I purchased. It has a scope connector on one side
and a short cable with a bnc connector on the other. I'd like to know
what it's used for. I searched Google and found virtually no info on
it - except a blurb in Japanese - which had no value to me.

I'm intrigued by it. If anyone knows how to use it, please clue me in.

Best,
John