Hello Again group!
I've been testing this for a while, and I still have some delay minutes.
This is the PCB design I'm using and components.
*Components: *
·PIC16F1936
·CRYSTAL MS3V-T1R CRYSTAL 32.768 Khz.
·Capacitors ( used 6.0 ; 7.0 ; 9.0 & 12.5) pF as datasheet from crystal
recommend.
·R
Excellent!
~
*mcvei...@gmail.com *
On Sun, Jul 18, 2021 at 11:48 AM Instrument Resources of America <
iracosa...@hughes.net> wrote:
> It lives again. Beckman Berkeley model 7360 Events Per Unit Time
> (E.P.U.T.) meter and timer, that I recently restored to operational
> condition. See the ph
The capacitance you cite from the datasheet is not the recommended
capacitance for the external capacitors, it is the load capacitance of the
crystal - you must check your ordering document to see which crystal you
got unless you can read the information on the crystal itself if it is
laser pri
Nice!
I have one in my storage that needs some TLC - may I ask what you needed to
do to get it up and running?
I do believe I have a HP 521 or 522 too that needs TLC!
/Martin
On Sunday, 18 July 2021 at 20:48:11 UTC+2 Ira wrote:
> It lives again. Beckman Berkeley model 7360 Events Per Unit Ti
I'm glad someone is playing with one in original condition...I ended up
cutting up one of mine to make a digital clock, all vacuum tube operated. I
also recently got rid of the last one I had that still was mostly original,
worked last time I tried it.
https://www.youtube.com/watch?v=VM9TW6GcCQ
Sins of the past are here to haunt me.I personally junked at least 3 of
those about 40 years ago, and have a few parts remaining. I am truly amazed
you could get this thing to work. Well done !!!
If you could post an interior photo showing all of the vacuum tubes inside,
I'm sure some of th
+1 for an internal pic
On Sun, Jul 18, 2021, 7:11 PM gregebert wrote:
> Sins of the past are here to haunt me.I personally junked at least 3
> of those about 40 years ago, and have a few parts remaining. I am truly
> amazed you could get this thing to work. Well done !!!
>
> If you could pos
It is gaining time, or losing time ?
If it's losing time, could it be caused by execution delays in your
software ? I've seen some really bizarre things happening with my Raspberry
Pi based clocks because of the chaotic behavior of Linux, and I have even
seen metastability-related failures due
One question Ira;
How much power does it draw?
"If you have to ask, maybe you shouldn't buy it"...
~
*mcvei...@gmail.com *
On Sun, Jul 18, 2021 at 6:53 PM Instrument Resources of America <
iracosa...@hughes.net> wrote:
> And now Pic No 5. The 'piece de resistance'. Viewing the top side,
Anyone notice the flexible shaft from one of the front panel controls ?? I
never could figure out why they did this. Maybe they found a manufacturing
issue and did not want to re-manufacture a new set of front panels ??
On Sunday, July 18, 2021 at 8:16:44 PM UTC-7 martin martin wrote:
> One qu
I expect it was to keep the wires short, on that selector switch...pulse
stuff like this is kind of picky about wire lengths and crosstalk.
On Sunday, July 18, 2021 at 8:40:14 PM UTC-7 gregebert wrote:
> Anyone notice the flexible shaft from one of the front panel controls ?? I
> never could
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