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Tek 545A-- piffle! See this Tek wonder...

G

George R. Gonzalez

Jan 1, 1970
0
Posted to alt.rec.radios.binaries --

A REAL Tek scope -- the 567 with sampling plug-ins, plus the 6R1A digital
time/voltage readout.

Still works perfectly-- actually better than specs, can show a 300ps
risetime, spec is 400ps or better.

Still cool and light enough for general use in the shop-- you just wouldnt
want to carry it around
to do TDR cable testing at the top of a pole....
 
K

Kevin Carney

Jan 1, 1970
0
Was the 519, the scope, with the small viewing area (3cm x 8cm) on the CRT ?

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is done in a particular way, and why it is done at
all, and why it can't be done more efficiently,
if it must be done at all."-- T.J.Watson

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A

A E

Jan 1, 1970
0
George R. Gonzalez said:
Posted to alt.rec.radios.binaries --

A REAL Tek scope -- the 567 with sampling plug-ins, plus the 6R1A digital
time/voltage readout.

Still works perfectly-- actually better than specs, can show a 300ps
risetime, spec is 400ps or better.

Still cool and light enough for general use in the shop-- you just wouldnt
want to carry it around
to do TDR cable testing at the top of a pole....

When you say 'see', do you have any pictures? I've often wondered about the 6R1
and what it could do. I don't have my reference manual nearby, is this the
plug-in that also auto-ranges the scope's settings by pressing a button on the
probe?
A 1S1 sampler in a 547 gives about 350pS rise-times, not too shabby I'd say. You
can send the equivalent-time vertical output to a PC A/D and you get a luverly
system that way.
 
J

John Larkin

Jan 1, 1970
0
Was the 519, the scope, with the small viewing area (3cm x 8cm) on the CRT ?

Right. Huge scope with a tiny P11 screen. It was mainly used for
photography of single-shot nuclear events.

John
 
M

Michael Black

Jan 1, 1970
0
John said:
Right. Huge scope with a tiny P11 screen. It was mainly used for
photography of single-shot nuclear events.

John
Was it a one-shot scope, like those single-use cameras they have now?

John W. Campbell, of science fiction fame, once wrote an article in
CQ Magazine about a wide-bandwidth scope, this was in the late fifties.
It used no vertical amplifier, and the lack of sensitivity was made
up by a reduced high voltage. If I'm recalling, he varied the high voltage
to vary the sensitivity, instead of an attenuator which would interfere
with bandwidth for the average builder. The tradeoff was a dim and tiny
display, but he talked in terms of low lighting in the room, and a magnifying
glass. I gather he'd got the idea from Bell Labs (he had some connection
there, it might have been his father), and they were blowing their own
tubes specifically for this use.

This was all in an attempt at getting wider bandwidth scopes at a time
when the average scope had relatively little bandwidth (due to the
vertical amplifier).


Michael
 
D

Dave VanHorn

Jan 1, 1970
0
John Larkin said:
CRT ?

Right. Huge scope with a tiny P11 screen. It was mainly used for
photography of single-shot nuclear events.

I guess you'd really be ticked if your Weller WTCPR station clicked and
triggered the scope a second early! :)
 
J

John Larkin

Jan 1, 1970
0
When you say 'see', do you have any pictures? I've often wondered about the 6R1
and what it could do. I don't have my reference manual nearby, is this the
plug-in that also auto-ranges the scope's settings by pressing a button on the
probe?
A 1S1 sampler in a 547 gives about 350pS rise-times, not too shabby I'd say. You
can send the equivalent-time vertical output to a PC A/D and you get a luverly
system that way.

OK, a couple of pics (from the manual) are posted to a.b.s.e. I
especially like the bootstrap sweep generator, using only the plate
capacitance of a 4CX250 as the sweep capacitor.

Oh, it only weighed 99 pounds.

John
 
J

Jim Thompson

Jan 1, 1970
0
On Fri, 01 Aug 2003 11:08:34 -0700, John Larkin

[snip]
OK, a couple of pics (from the manual) are posted to a.b.s.e. I
especially like the bootstrap sweep generator, using only the plate
capacitance of a 4CX250 as the sweep capacitor.

Oh, it only weighed 99 pounds.

John

ISTR that the definition of "portable" was "under 100 pounds" ;-)

There was an edict at Motorola in the 1960's that said "if you hurt
your back while attempting to move equipment *by yourself*, you will
be fired".

...Jim Thompson
 
P

Paul Burridge

Jan 1, 1970
0
There was an edict at Motorola in the 1960's that said "if you hurt
your back while attempting to move equipment *by yourself*, you will
be fired".

Ah, a company that obviously cares about its workers' health. :)
 
J

Jim Thompson

Jan 1, 1970
0
Ah, a company that obviously cares about its workers' health. :)

Naaah! It was a firmness that guaranteed at least two men to the task
of picking up a 'scope.

Worker's health was the best ever back then... cheap health insurance
that actually paid benefits ;-)

...Jim Thompson
 
N

N. Thornton

Jan 1, 1970
0
Quite a change from the old 2MHz I worked with.

Regards, NT
 
D

ddwyer

Jan 1, 1970
0
Michael Black said:
Was it a one-shot scope, like those single-use cameras they have now?

John W. Campbell, of science fiction fame, once wrote an article in
CQ Magazine about a wide-bandwidth scope, this was in the late fifties.
It used no vertical amplifier, and the lack of sensitivity was made
up by a reduced high voltage. If I'm recalling, he varied the high voltage
to vary the sensitivity, instead of an attenuator which would interfere
with bandwidth for the average builder. The tradeoff was a dim and tiny
display, but he talked in terms of low lighting in the room, and a magnifying
glass. I gather he'd got the idea from Bell Labs (he had some connection
there, it might have been his father), and they were blowing their own
tubes specifically for this use.

This was all in an attempt at getting wider bandwidth scopes at a time
when the average scope had relatively little bandwidth (due to the
vertical amplifier).


Michael
I recall CRTs with fibreoptic plates to convey every photon to the film
 
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