The nicest optical bench I've ever seen in person, was in one of our
labs many years ago. It was a huge, precisely flat polished granite slab
about 6-8" thick, about 4x8' or maybe 5x10', mounted on active-leveling
pneumatic bladders. It was loaded with thousands of threaded inserts,
uniformly
In my youth I worked for a time in my dad's automotive machine shop. We did a
lot of work on medium-sized industrial engines, Cummins V-12s, GMC V16-71s,
International TD-24s, etc. To handle these we bought a Van Norman crankshaft
grinder, a sizable machine, which I operated. The shop was in
I'll check my 5372A manual to see if
I can be of any help.
Don
W4WJ
On Sunday, June 28, 2020 ed breya wrote:
I have a 5372A, and way back when I got it, I of course looked for the
manual and think I got the pdf. As I recall, this was from the era where
HP still provided full "real"
Lester,
I think looking at the parts list in the Service manual from Artek it’s a
bought out all in one unit. If I recall the BOM has one line item.
Have you checked with Walter at Sphere? He has the next PN in the sequence
which is a Sony Color display. Or check with Newscope for a LCD
I have a 5372A, and way back when I got it, I of course looked for the
manual and think I got the pdf. As I recall, this was from the era where
HP still provided full "real" manuals with all the schematics etc. The
exception sometimes is if the entire display is an OEM unit, treated as
a
I am trying bring HP5370B back to life. It is missing power supply board and
display interface board. If anyone has a spare or a junk machine and
interested in selling, please let me know.
Display interface board is the one second from the left. Power supply card is
by itself, close to banks
Steve:
I probably will be reduced to stealing the two assemblies from a 71 to go
into the 72
Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y
les...@veenstras.com
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Yes, but no schematics visible.
Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y
les...@veenstras.com
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of Dave
Miller
Sent: Sunday, June 28, 2020 11:31 AM
To: Discussion of precise time and frequency
Lester,
Might that be a 5372A?
I have it’s brother, the 5371A. I turn it on every few months to make sure it’s
still working. I’m going to be away for at least a week but will look for my
documentation when I return. My 5371A is on the disposal list as I start my
downsizing.
Steve
WB0DBS
"You can get a bitmap of the screen using "INTERFACE;PSOURCE,DISPLAY;PRINT",
but it is not particularly fast and comes with gratis PCL escapes, but it
does work."
Interesting, I will look into it as a way to get a starting point, atleast
for initial tests and diadnostics
I assume you mean HP-5372A---Yes, of course. Mind not fully in control
Lester B Veenstra K1YCM MØYCM W8YCM 6Y6Y
les...@veenstras.com
452 Stable Ln (HC84 RFD USPS Mail)
Keyser WV 26726
GPS: 39.336826 N 78.982287 W (Google)
GPS: 39.33682 N 78.9823741 W (GPSDO)
Telephones:
Home:
Lester,
All I can find is the PN 2090-0209 for the whole assembly.
Dave
VE7HR
On Sun, Jun 28, 2020 at 7:29 AM Lester Veenstra via time-nuts <
time-nuts@lists.febo.com> wrote:
>
>
> TimeNuts:
>
>
>
> I have a HP 5732A with a defective CRT driver board. Since this (A17)
> is undocumented (as
Dr David Kirkby Ph.D C.Eng MIET
Email: drkir...@kirkbymicrowave.co.uk Web:
https://www.kirkbymicrowave.co.uk/
Kirkby Microwave Ltd (Tel 01621-680100 / +44 1621-680100)
Stokes Hall Lodge, Burnham Rd, Chelmsford, Essex, CM3 6DT.
On Sun, 28 Jun 2020 at 12:44, Tom Van Baak wrote:
> About slabs
Lester Veenstra via time-nuts writes:
I assume you mean HP-5372A and not 5732A ?
> I see good H and V sync inputs as well as the ZMod (Video data) into the
> board, bur the drive for the two deflection coils is not what I would
> expect.
The 5372 uses a weird video-format, 19KHz
TimeNuts:
I have a HP 5732A with a defective CRT driver board. Since this (A17)
is undocumented (as no repairable) I am of course trying to work my way
around it to see if the defect is findable.
Any A17 boards loose out there, or even better, documentation?
I see good H and V
Tom Van Baak writes:
> Note the unknown mystery support technique underneath.
No mystery at all.
Such supports are standard equipment for a lot of "nano" kit, such
as optical tables, SEM microscopes and similar.
Google "optical table vibration isolation" and you will find
lots of
From: Dave B via time-nuts
[]
Also, has anyone tried this? (An alternative to Meinberg on Windows
perhaps...)
https://elpromatime.com/downloads/I'd take a look, but I don't run
Windows here any more.
Cheers n beers.
Dave G8KBV
Dave,
It's the
Once I get my OSA 8607 back I plan on mounting it along with a FRK/M100 RB in a
HP chassis. Attached a picture of a vibration mount for the OSA. Very soft.
Can not be used for the Rb because of weight but also vibration mounted. The Rb
is fan cooled with a Sunon MagLev 80X80x15 30db(A)
Interesting ...
They quote - “At the other end of the scale, gravity dominates over very long
distances, while quantum effects vanish entirely at these distances.”
I thought quantum entanglement was valid over any distance - Einstein’s “spooky
action at a distance”. Thus offering the
Through the mysteries of business consolidation and the resulting asset
transfers, I have in my Virginia basement a rather nice Zeiss metallurgical
microscope (which I have absolutely no use for but I couldn't stand to see
consigned to a dumpster), which is perched on its original mount, a
A funny looking "SMA" ended cable
https://elpromatime.com/portfolio_page/time-server-nts-pico/ (Scroll down.)
Also, has anyone tried this? (An alternative to Meinberg on Windows
perhaps...)
https://elpromatime.com/downloads/ I'd take a look, but I don't run
Windows here any more.
https://arstechnica.com/science/2020/06/tiny-pendulum-may-reveal-gravitys-secrets/
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Neville Michie writes:
> An old trick I learned from an Australian standards lab was to make a
> vibration free
> table with a 2 foot by 2 foot by 2 inch paving slab supported by a partly
> inflated
> wheel barrow inner tube.
Yes, that works surprisingly well, because the toroid shape
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