Hi Dave,
Thanks for the link, I already have this setup working but the problem
is that it does not have the necessary Java component to make the
Truetime web system work and I have not taken the time to see if this
could be engineered in. Regarding running it under Firefox with SUN
Java on
Bob (Fluke.1) has some GPS16HVS's at a decent price. Very short (cut
off) leads though. I have two of them (one just in case) and am about
to graft on cable extensions to test them.
These are units that do have real RS232 and 1PPS output as standard,
work from an 8 to 40V supply, for a
Regarding the effect of solar eclipse on timekeepers,
The obvious variables of gravity and temperature can be monitored,
but what about neutrino flux?
There is quite a lot of neutrino energy passing through the planet
and it would take a lump like the moon to make a significant change
in the
John,
I have a 5061A and 5061B and both have a position on their front panel MODE
switch that is CS OFF. When in this position the CS OVEN is off, the OSC
OVEN is on, the ION PUMP is working and there is signal out (10 MHz, 5 MHz,
1 MHz, 100 KHz, as appropriate) as measured by the CIRCUIT CHECK
Guys,
after a lot of help coming from Australia (thank you Hal and Kit) there is a
stable version of my Z38XX utility available. It handles the Z3801, the
Z3805, the Z3815 and the GCRU.
It is available from the usual place. Enjoy!
Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross
I tried to take this off list but no one answered.
Answers to prior questions:
Good cosmetic condition
Can deal with checks
Do not remember the antenna it has preamp and is conical in shape
It is changed to RS-232
I have a 8 channel replacement sat RX to make an update
I have a power supply to
Neville Michie wrote:
Regarding the effect of solar eclipse on timekeepers,
The obvious variables of gravity and temperature can be monitored,
but what about neutrino flux?
There is quite a lot of neutrino energy passing through the planet
and it would take a lump like the moon to make a
What is your asking price?
John
--
From: Don Garlick d...@k7tsv.com
Sent: Friday, July 10, 2009 10:23 AM
To: time-nuts@febo.com
Subject: [time-nuts] FW: For Sale HP Z3801A
I tried to take this off list but no one answered.
Answers to prior
Hi Ulrich,
any chance you could send me a list of commands you utility uses as a
minimum command-set so I can cross-check against our Fury/FireFly GPSDO's?
There are lots of folks on this list that have our units, and it would be
great if we could get it up and running for our interface
This really more about frequency than time but I thought it might be of
interest. The Agilent 8920 series of instruments have an A15 module, the
reference, which takes an external 10 MHz input and locks an internal TCXO
to it then producing 1 GHz, 500 MHz, 20 MHz, 10 MHz, 1 MHz or 200 KHz
outputs.
One is do crystal oscillators change frequency when they
are turned. The answer to that is yes. This gravitational
acceleration effect is rather huge, parts in ten to the 9th
or so, and anyone can see this. This is why you never
touch, bump, or move, or rotate a laboratory frequency
standard
Hello Tom,
this plot looks very similar to our standard double oven units. We
have our low-g option, which reduces the deviation to about 2- 3E-10
per g, they work great but do cost more than standard units..
Coincidentally they also reduce sensitivity to vibration and tapping
by 5x to
Hi Said Tom,
The below url links some low-g-osc papers.
http://www.freqelec.com/tech_lit.html
Said, did you contemplate adding a cheap 3d-accelerometer and try to teach
your holdover algorithms use the accelerometer measurements in the same
way as your temperature measurements?
--
Hi Said Tom,
The below url links some low-g-osc papers.
http://www.freqelec.com/tech_lit.html
Said, did you contemplate adding a cheap 3d-accelerometer and try to teach
your holdover algorithms use the accelerometer measurements in the same
way as your temperature measurements?
Björn,
The candle that burns twice as bright, burns half as long...
Are both your units the high-performance version? These units get their
performance boost by doubling the beam current... at the expense of half the
life. As a side benefit of the increased beam current, you can get
increased
You're right, at 11 ua, that 5071A is pretty much hosed. I'd be surprised
if it knows what day it is. You'd better cut your losses and send it to me
before it gets any worse. Cesium is a hazardous material, not that there's
much left in this particular unit, and you don't want to be stuck
The candle that burns twice as bright, burns half as long...
Are both your units the high-performance version? These units
get their performance boost by doubling the beam current... at
the expense of half the life. As a side benefit of the
increased beam current, you can get
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