25 Jan
2020
25 Jan
'20
8:46 p.m.
I was idly browsing some old electronics magazines on archive.org and saw this
Tektronix testing system from 1972 that clearly has an 11/20 and TU-56. Just curious
as to what the piece of gear is sandwiched between the two. It sort of looks like a
paper tape reader, but for the two white buttons or whatever they are at the lower right
and the white bit at top right.
It seems to be in a DEC bezel(?) It doesn't seem to match the bespoke Tek gear at
right
which looks quite different. I'm guessing it really is just a paper tape reader.
http://www.surfacezero.com/g503/data/4173/Tektronix_S-3260_automated_test_s…
Thanks in advance.
Steve
11:16 p.m.
On 1/25/2020 5:46 PM, Steve Malikoff via cctalk wrote:
I was idly browsing some old electronics magazines on
archive.org and saw this
Tektronix testing system from 1972 that clearly has an 11/20 and TU-56. Just curious
as to what the piece of gear is sandwiched between the two. It sort of looks like a
paper tape reader, but for the two white buttons or whatever they are at the lower right
and the white bit at top right.
It seems to be in a DEC bezel(?) It doesn't seem to match the bespoke Tek gear at
right
which looks quite different. I'm guessing it really is just a paper tape reader.
http://www.surfacezero.com/g503/data/4173/Tektronix_S-3260_automated_test_s…
Thanks in advance.
Steve
The top right unit is a Tektronix branded Remex paper tape reader/punch,
I have one.
The system is supposed to have a disk drive, possibly the middle unit is
part of one?
Bob
--
Vintage computers and electronics
www.dvq.com
www.tekmuseum.com
www.decmuseum.org
26 Jan
26 Jan
10:20 a.m.
Link to paragraph or two in a book citing the 3260 as a test system
for military requirements related to commercial devices.
https://books.google.com/books?id=-68mFnWum5kC&pg=PA1051&lpg=PA1051…
On Sun, Jan 26, 2020 at 7:48 AM Bob Rosenbloom via cctalk
<cctalk at classiccmp.org> wrote:
On 1/25/2020 5:46 PM, Steve Malikoff via cctalk wrote:
I was idly browsing some old electronics
magazines on archive.org and saw this
Tektronix testing system from 1972 that clearly has an 11/20 and TU-56. Just curious
as to what the piece of gear is sandwiched between the two. It sort of looks like a
paper tape reader, but for the two white buttons or whatever they are at the lower right
and the white bit at top right.
It seems to be in a DEC bezel(?) It doesn't seem to match the bespoke Tek gear at
right
which looks quite different. I'm guessing it really is just a paper tape reader.
http://www.surfacezero.com/g503/data/4173/Tektronix_S-3260_automated_test_s…
Thanks in advance.
Steve
The top right unit is a Tektronix branded Remex paper tape reader/punch,
I have one.
The system is supposed to have a disk drive, possibly the middle unit is
part of one?
Bob
--
Vintage computers and electronics
www.dvq.com
www.tekmuseum.com
www.decmuseum.org
5:43 a.m.
They demoed a system with an exotic sampling system similar to that in
that time frame at the university I went to.
Jon Elson may recall it.? Might have been as late as 73.
It had a dual ended CRT with what was essentially a high speed scope
shooting a silicon charged target from one side.
On the other side once a scan was made on the silicon target, which was
about the size of a scope tube display, the other side would
scan in a manner similar to how the printing process worked with the
storage tube terminals or displays, and the trace was either
printed or digitized.? The 11s were used for analysis software.
I just sold a Tektronix 11/34 last fall that was pulled from a much
later system, which was the computing element they supplied
with elaborate testing systems.
The systems for the most part are all scrap but for the cabinet with the
11/34.? A friend I know bought the 11/34 for me, an
passed on the analog crap in 4 other bays.? Most of it? is junk as they
were custom systems, with little trace of the operational
software, and it wasn't generic.
thanks
Jim
On 1/25/2020 5:46 PM, Steve Malikoff via cctalk wrote:
I was idly browsing some old electronics magazines on
archive.org and saw this
Tektronix testing system from 1972 that clearly has an 11/20 and TU-56. Just curious
as to what the piece of gear is sandwiched between the two. It sort of looks like a
paper tape reader, but for the two white buttons or whatever they are at the lower right
and the white bit at top right.
It seems to be in a DEC bezel(?) It doesn't seem to match the bespoke Tek gear at
right
which looks quite different. I'm guessing it really is just a paper tape reader.
http://www.surfacezero.com/g503/data/4173/Tektronix_S-3260_automated_test_s…
Thanks in advance.
Steve
12:09 p.m.
On 01/26/2020 04:43 AM, jim stephens via cctalk wrote:
They demoed a system with an exotic sampling system
similar to that in that time frame at the university I
went to.
Jon Elson may recall it. Might have been as late as 73.
It had a dual ended CRT with what was essentially a high
speed scope shooting a silicon charged target from one side.
Tek sold several storage oscilloscopes that used an image
conversion scheme. One type had a microchannel plate
with the traditional scope electronics on one side and an
NTSC video scanning tube on the other side. So, you could
take a single-shot event, store on the microchannel, and
then display on a black and white TV monitor for an amazingly
long time. It took like 10+ minutes for the image to degrade.
I think it was later they made an electron beam digitizer
storage scope. The scope tube created a fan beam that was
deflected by single-axis deflection plates. The target had
patterns of stripes that decoded the beam into a binary code
that was then recorded in a digital memory. So, the fan
beam of electrons and the target formed the ADC!
Jon
12:15 p.m.
I think it was later they made an electron beam
digitizer
storage scope. The scope tube created a fan beam that was
deflected by single-axis deflection plates. The target had
patterns of stripes that decoded the beam into a binary code
that was then recorded in a digital memory. So, the fan
beam of electrons and the target formed the ADC!
That family of tubes is called an electron bombardment semiconductor.
The target is actually a semiconductor wafer with an array of diodes
to sense the position of the deflected swept beam, arranged in a Gray
code. I did a video on one of the tubes sometime ago on my Youtube
channel "uniservo".
--
Will
8:50 p.m.
Thanks everyone for the comments. I think Jay's notion it might be a chart
recorder sounds plausible, and the images of vintage recorders Mr Google
has found for me seem to be types that might have fitted the upper right
rectangular area. I know it is not a good picture but it seems there might
be two pen needles at the the bottom edge of the rectangle.
As has been noted, cctalk brings out some great anecdotes. I'm glad it's back
up, I miss it when it's not.
Steve
1638
days inactive
1639
days old
8 comments
8 participants
participants (8)
-
bobalan＠sbcglobal.net -
bobsmithofd＠gmail.com -
elson＠pico-systems.com -
jwest＠classiccmp.org -
jwsmail＠jwsss.com -
steven＠malikoff.com -
tdk.knight＠gmail.com -
wdonzelli＠gmail.com