On Wed, Mar 21, 2012 at 9:55 PM, Perry Sandeen sandee...@yahoo.com wrote:
One, can I safely double the capacitance of the filter capacitors? (I plan
on using the 105C 10K hour high reliability Nichicon or Panasonic units.)
A possible problem is in rush current. When you first turn on the
On Wed, 21 Mar 2012 12:18:21 -0400
Ben Gamari bgam...@physics.umass.edu wrote:
On Wed, 21 Mar 2012 09:44:14 -0500, David davidwh...@gmail.com wrote:
I am surprised it is not more accurate and precise. Even old discrete
designs can get down to 10ps or better. I wonder what market it is
On 03/22/2012 10:51 AM, Attila Kinali wrote:
Review of methods for time interval measurements with picosecond resolution
by Jozef Kalisz, 2003, http://ztc.wel.wat.edu.pl/kalisz/met4_1_004.pdf
A very detailed, but broad overview of the methods that are used in todays
TIM/TDC applications.
Hi,
I wouldn't be concerned if the replacements were oscon or nichicon. The trick
is to avoid those crappy Chinese caps that have caused mobos to fail.
I'm more concerned why the device smoked in the first place.
___
time-nuts mailing list --
Moin,
On Thu, 22 Mar 2012 11:20:10 +0100
Gerhard Hoffmann dk...@arcor.de wrote:
On 03/22/2012 10:51 AM, Attila Kinali wrote:
Review of methods for time interval measurements with picosecond
resolution
by Jozef Kalisz, 2003, http://ztc.wel.wat.edu.pl/kalisz/met4_1_004.pdf
A very
On Wed, 21 Mar 2012 21:55:39 -0700 (PDT)
Perry Sandeen sandee...@yahoo.com wrote:
So two questions. One, can I safely double the capacitance of the
filter capacitors? (I plan on using the 105C 10K hour high reliability
Nichicon or Panasonic units.)
That depends on the circuit. Be aware
On Wed, 21 Mar 2012 22:33:49 -0700
John Miles jmi...@pop.net wrote:
I did this for a while, but I eventually realized that new
computer grade electrolytic capacitors no longer have the same
quality levels that they must have had in the 1970s and 1980s.
Back then, orders of magnitude more of
Perrier thats because its not really a modification to the 3586.
The 3586 can take any appropriate external reference into the bnc on the
back and lock.
Granted if you have a 3586 that does not have an internal oven (Pretty
common since they get snitched and the 3586 tossed) you could quite easily
Thank you very much for your response. This is amazingly helpful.
Attila Kinali att...@kinali.ch writes:
On Wed, 21 Mar 2012 12:18:21 -0400
Ben Gamari bgam...@physics.umass.edu wrote:
On Wed, 21 Mar 2012 09:44:14 -0500, David davidwh...@gmail.com wrote:
I am surprised it is not more
On Wed, 21 Mar 2012 18:52:33 -0400 (EDT), saidj...@aol.com wrote:
Alternatively, if you want to design your own, you could use a
time-expander. It only requires a small micro with counter/timer, and a
little bit of
external circuitry for charging/discharging a precision cap. You charge
John wrote:
Replacing known good filter capacitors is a zero-sum exercise at
best. New aluminum electrolytics are relatively expensive, and
you'll be replacing parts that are probably near the bottom of their
bathtub-shaped reliability curves with parts that are definitely on
the left side
I just went through this exercise with a pair of Tektronix PS503A
power supplies which differed in manufacturing date by 10 years.
On Wed, 21 Mar 2012 21:55:39 -0700 (PDT), Perry Sandeen
sandee...@yahoo.com wrote:
The other day I had my second HP 3586B power supply board smoked. It burned
both
On Thu, 22 Mar 2012 12:04:30 +0100, Attila Kinali att...@kinali.ch
wrote:
On Wed, 21 Mar 2012 22:33:49 -0700
John Miles jmi...@pop.net wrote:
I did this for a while, but I eventually realized that new
computer grade electrolytic capacitors no longer have the same
quality levels that they must
Hi
Be careful as you dig through the TDC stuff. Different people do their 10
ps different ways. An average bin likely is smaller than a one sigma
and that's likely significantly smaller than a largest bin. Where one lsb
fits in might be anywhere in that range.
Since different approaches yield
Best run yet, 3 solid days of operation and I was able to log various local
references as compared to a HP3801 and Tbolt.
Only 2 stations generally on the air. 89700 Master and X, but an
unidentified one came up for a short bit in the 4th position
Regards
Paul
WB8TSL
More interestingly the FS700 reacquired automatically! Never seen that
before.
On Thu, Mar 22, 2012 at 4:53 PM, paul swed paulsw...@gmail.com wrote:
Interesting just fired up a general coverage rcvr and LORAN C can be heard
but not that strong.
It does appear to be 89700 still as the austron
On Thu, 22 Mar 2012 11:12:40 -0400
Ben Gamari bgam...@physics.umass.edu wrote:
If you are really going to build your own design, then i suggest you
read these papers:
Thank you very much for this list. While I have already stumbled upon a
few of the FPGA papers, I'm largely ignorant of
Interesting.
My FS700 also automatically reacquired.
But the Austron 2100 and 2100F had to be manually reset to acquire again,
after the short outage.
How did you determine there was a short lived other station in the chain ?
Other than manually going to the screen that shows the additional
My experience is you always have to reacquire on the austrons 2100 series.
I think its either the period they were made or a choice, that you
reacquire on loss.
It was pure luck I caught the additional station by logging the screen info.
I have mentioned several times I have not heard the other
On the 2100Fs it reacquires and locks, if the power has not been
interrupted, but you have to manually set thye Mode to compute the
frequency error. Otherwise, it just indicated microseconds.
A power failure and you have to reenter tye GRI.
-John
==
My experience is you always
On the 2100Fs it reacquires and locks, if the power has not been
interrupted, but you have to manually set thye Mode to compute the
frequency error. Otherwise, it just indicated microseconds.
A power failure and you have to reenter tye GRI.
-John
==
My experience is you always
Attila Kinali att...@kinali.ch writes:
On Thu, 22 Mar 2012 11:12:40 -0400
Ben Gamari bgam...@physics.umass.edu wrote:
If you are really going to build your own design, then i suggest you
read these papers:
Thank you very much for this list. While I have already stumbled upon a
few of
Thanks John
I'll have to see what I can do on the tracking.
At 0037 EST the stations dropped while I was listening and watching.
100KC is totally quite right now.
Regards
Paul
On Thu, Mar 22, 2012 at 5:50 PM, J. Forster j...@quikus.com wrote:
On the 2100Fs it reacquires and locks, if the power
On 3/22/2012 7:41 PM, paul swed wrote:
Thanks John
I'll have to see what I can do on the tracking.
At 0037 EST the stations dropped while I was listening and watching.
100KC is totally quite right now.
Regards
Paul
My 2100r continues to receive in north west Illinois.I assume this is
the Dana
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