search LTZ1000, LM399, and LH0070 at www.linear.com , also get app
notes AN42, AN82, and AN86 - and by the way, most big parts houses
have quit carrying these references - but they can be ordered direct
from Linear Technology.
The LTZ1000 is used in HP3458A multimeters and a lot of
Brian Kirby wrote:
search LTZ1000, LM399, and LH0070 at www.linear.com , also get app
notes AN42, AN82, and AN86 - and by the way, most big parts houses
have quit carrying these references - but they can be ordered direct
from Linear Technology.
The LTZ1000 is used in HP3458A
Hi Bruce (and others!) --
Thanks to all for the pointers.
No, Bruce, I'm not going quite that far. I've just acquired a couple of
pieces of voltage gear and don't really know the first thing about the
calibration process. I'm really looking to learn the basics (as they
were 20 years ago,
A good reference is the old Fluke publication Calibration -
Philosophy in Practice
by Steve Spang. (1975)
Be very carefull with standard cells! Never load a cell. Use the cells
only with
high ohm null detectors.
A loaded cell need a long time for regeneration (or come back never to
the old
b...@lysator.liu.se skrev:
Hi Brooke and Russel,
Meinberg does the same thing, but they send a 10MHz - nice choice!! - up
the coax to receive an IF of 35.4MHz.
http://www.meinberg.de/english/products/gpsant.htm
http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf
As I
Yes, never load a standard cell.
It's standard practice to put a jumper across the terminals of a
galvanometer for shipping, so the needle (or mirror) doesn't slam
around.
Some years ago, I got a standard cell from eBay. The terminals had been
shorted for shipping.
Bill Hawkins
-Original
Hi Bill.
I could use that DVM if no one else has spoken for it. Let me know and I'll
give you my address off list. My email address is after my signature.
Regards.
One of the lurkers,
Max. K 4 O D S.
Email: m...@maxsmusicplace.com
Transistor site http://www.funwithtransistors.net
Vacuum
Time to shrink the atomic clock
14 March 2009 by Anil Ananthaswamy
Magazine issue 2699. Subscribe and get 4 free issues.
ATOMIC clocks, currently the size of fridges, could shrink to the
microscale thanks to a new way of measuring the second. The technique
could also see aluminium displace
At 05:46 PM 3/15/2009, Thomas A. Frank wrote...
14 March 2009 by Anil Ananthaswamy
ATOMIC clocks, currently the size of fridges,
A 40 year old HP 5060A is smaller than a small refrigerator.
I challenge Anil to tell us what fridge he's thinking of which is the
size of an Efratom FRS. (Although
After several weeks of slow evening and hour here and hour there the FEI
5680a is performing on the bench. I was able to get the serial interface
to operate for a brief period. The 'S' and 'F' commands worked long
enough to change the divisor to produce close to a 10 MHx output, it was
7 Hz
On 3/15/09 2:46 PM, Thomas A. Frank ka2...@cox.net wrote:
Time to shrink the atomic clock
14 March 2009 by Anil Ananthaswamy
Magazine issue 2699. Subscribe and get 4 free issues.
ATOMIC clocks, currently the size of fridges, could shrink to the
microscale thanks to a new way of
this appears to be from the website/magazine New Scientist:
http://www.newscientist.com/article/mg20126994.900-time-to-shrink-the-atomic-clock.html
after reading several of his(Anil's) other articles:
http://www.newscientist.com/search?rbauthors=Anil+Ananthaswamy
none of them seem to be
At 07:54 PM 3/15/2009, Eric Garner wrote...
this appears to be from the website/magazine New Scientist:
Aha. Omni NG (without the credibility of Bob Guccione :-) ).
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
In a message dated 15/03/2009 15:27:52 GMT Standard Time, j...@febo.com
writes:
However, I have an old 893A here that I just powered up for the first
time in years. It seems to work (at least, the meter zeros properly) so
that gives me something to play with.
---
Hi
I spent quite a bit of time poking and prodding FE5680's.A while back, I
posted a piece about what I found. It covers some important details about
programming these units. The part about setting the frequency is at the end of
the piece. Dieder has it available on his site:
Well I for one am going to wade in and support this magazine.
I think it does an excellent job in presenting week after week the
discoveries in science. In fact it is sometimes hard to keep up with them.
They reference their sources so you can go in-depth if need be and generally
do an excellent
Mark,
Thank you for your work and your reply, I was able to disconnect the
output of the DDS board from the 1 second divider, the DDS board
produces a clean sine wave.
I thank you for your article, I have a couple of follow up questions:
1. Which pot is the C-field?
2. Did you ever
Hello Dan,
I think the C-field pot is the one accessible through the hole in the outer
cover. If you don't have the cover, it is on one side of the physics package
can near the top, center.
I never messed with the reset pin. The RS-232 interface works just fine.
Most of my units are the
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