Stan,
I own a SR620 as well and mine behaves the same (while with a different
number of counts) so your's is surely not defective! My understanding a
few years ago when I acquired the counter was that this bias is not due to a
adjustment in the normal sense but to set a parameter in the counter's
Stanley Reynolds wrote:
hope my email client will not mess up the link:
www.n4iqt.com/efratom8084008/eeratom_model_frs_lamp_assembly_repair.pdf
I think the last paragraph is most interesting as it relates to the lamp
itself.
Cheers,
Magnus
___
Gentlemen,
in http://www.elektronik-kompendium.de/public/schaerer/pll4046.htm
which unfortunately is available in German language only (the illustrations
however speak for themselves!) the author makes an in depth analysis of the
self biasing amplifier circuitry of the 4046's input pin 14 and
Hi Ulrich,
Thanks for the insight! I tried manually adjusting the value of CalByte 50
(as per Magnus' suggestion), but it did not make the problem go away. There
is interaction between this adjustment and the CalByte 4 adjustment for
timebase accuracy, and when all was said and done, I didn't
Stan,
I believe I made it with calbyte 4 as described on page 71 of the manual.
Best regards
Ulrich
-Ursprungliche Nachricht-
Von: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] Im Auftrag von Stan
Gesendet: Montag, 28. September 2009 14:46
An: time-nuts@febo.com
Ulrich,
Ulrich Bangert wrote:
Stan,
I believe I made it with calbyte 4 as described on page 71 of the manual.
How does that explains the shift with time-base?
I think it is the wrong way around for a time-bias like this. Tweaking
the time-base will maybe fix it for one of the time-bases,
Very interesting link.
I'd add one cautionary note, the Rb lamp emitts UV light so you should avode
looking at the lamp without eye protection. Most plastic safety glasses will
stop harmful UV, or use sunglasses or an acrylic (perspex, lucite) shield.
Robert G8RPI.
--- On Mon, 28/9/09, Magnus
In message 731009.13735...@web27105.mail.ukl.yahoo.com, Robert Atkinson write
s:
I'd say the most interesting quote is:
[...]that causes failure to more then 99% of the 20 units[...]
I think my kinds math teacher would flunk that...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
Poul,
Maybe the last one was 20% functional? :-)
Dave
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Poul-Henning Kamp
Sent: 28 September 2009 21:09
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts]
No... 20% non-functional ;)
David C. Partridge escribió:
Poul,
Maybe the last one was 20% functional? :-)
Dave
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Poul-Henning Kamp
Sent: 28 September 2009 21:09
To: Discussion of
The lamp in the LPRO may have a significant difference from the other
lamps.
The pictures of lamps on Tom's ? page show that each of them has a
side arm
which is most helpful for filling.
The side arm is left out in the cold so any excess rubidium condenses
there
as a reserve supply. The
Was right, 20% functional... after a war day against an OLED display and
a Blackfin PPI, I ended not distinguishing between RGB and BGR ;)
Regards,
Javier
Javier Herrero escribió:
No... 20% non-functional ;)
David C. Partridge escribió:
Poul,
Maybe the last one was 20% functional? :-)
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