A Maxim MAX232 chip will do the conversion.
Bon, k1REM
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Richard W. Solomon
Sent: Wednesday, September 07, 2011 1:35 PM
To: time-nuts@febo.com
Subject: [time-nuts] Lucent RFTG-u-IIXO Quest
On 09/07/2011 08:42 PM, Bob Bownes wrote:
> The simplest method of all would be to put one on the X axis and one
> on the Y axis of an o-scope.
>
> What levels of precision/accuracy are you looking for?
I am envisioning s.th. like 10^-15 for Rb/Cs oscillators (=minute
timescale) - but I guess it
The simplest method of all would be to put one on the X axis and one
on the Y axis of an o-scope.
What levels of precision/accuracy are you looking for?
On Wed, Sep 7, 2011 at 11:36 PM, Ilja Gerhardt wrote:
> Hi time nuts -
>
> I am new to the list and have a trivial question on the comparison o
Hi time nuts -
I am new to the list and have a trivial question on the comparison of
two clocks: In principle it might be very easy to simply monitor the
relative phase-shift of two sine outputs of two clocks, e.g. of two
10MHz outputs.
For this, it would be ideal to have a very high frequency, s
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-
> boun...@febo.com] On Behalf Of John Petrich
> Sent: Wednesday, September 07, 2011 4:54 PM
> To: time-nuts@febo.com
> Subject: [time-nuts] Symmetricom OCXO ID
>
> I know this is one of those questions: I am tryin
I was playing with an Agilent 53132 counter, and noticed that
it measures "standard deviation" but doesn't seem to offer
what everyone really wants, ie, Allan deviation. According
to the textbooks, standard deviation won't work for oscillators
because the mean is not fixed and the deviation goes
> I was playing with an Agilent 53132 counter, and noticed that
> it measures "standard deviation" but doesn't seem to offer
> what everyone really wants, ie, Allan deviation. According
> to the textbooks, standard deviation won't work for oscillators
> because the mean is not fixed and the deviat
saidj...@aol.com wrote:
> Hi Rick,
>
> In my experience the 53132 is not good for ADEV measurements below 100s.
> It
> is just way too noisy.
Now I vaguely remember: the buffer circuit for the external reference
is a poor design, because the designers didn't know any better and
didn't ask for he
Hi Rick,
In my experience the 53132 is not good for ADEV measurements below 100s. It
is just way too noisy.
You can try longer measurement gate and averaging times, but theoretically
the SD value should be similar for 100s or 1000s SD measurements if what
you are measuring is actually th
I know this is one of those questions: I am trying to identify the voltage
requirements for the double oven heater elements to an HP 10811D (type)OCXO
from a Symmetricom GPS receiver. The HP s/n is 3505A22776. Both HP and
Symmetricom support cannot provide any data. The obvious heater leads
me
I was playing with an Agilent 53132 counter, and noticed that
it measures "standard deviation" but doesn't seem to offer
what everyone really wants, ie, Allan deviation. According
to the textbooks, standard deviation won't work for oscillators
because the mean is not fixed and the deviation goes t
I have a couple of EG&G units. Roughly 5" cubes. Sorry, I can't access the
data at present. I think they were made on the north shore of Boston,
Salem or Beverly, maybe. Data was available about 5-8 years ago.
-John
> Hi
>
> The "new" name for the location that made them is:
>
> Per
Perkin Elmer bought EGG Reticon. That is only one of many divisions. I
used to work there and can tell you we made no frequency references.
Other cool stuff though
The core of EG&G was a squat office building. Nothing was made there,
other than governance.
It is a full time job to keep u
Hi
The "new" name for the location that made them is:
Perkin Elmer Optoelectronics
35 Congress St #2921, Salem, MA 01970-7314
I've never seen a division or subsidiary name associated with the Rb's. The
part of the company that makes them is part of the original core of the
outfit.
I dont know whether it will be any use but the URL below is for the firm
that acquired EG&G
http://www.signalrecovery.com/InstManualLibrary.htm
Alan G3NYK
- Original Message -
From: "Skip Withrow"
To:
Sent: Wednesday, September 07, 2011 7:27 PM
Subject: [time-nuts] Looking for informat
Usually something from EG&G will come from a division of the company. Princeton
Applied Research for instance. If you could narrow it down to the actual device
builder, you may get better searches.
--Original Message--
From: Skip Withrow
Sender: time-nuts-boun...@febo.com
To: time-nuts@
I have just come across an EG&G TS-RFS Rubidium oscillator and have never
seen any information on it. There is a 16-pin connector that is relatively
well labeled, but some of the interface signals are still a mystery (like
what is the range of the 'DC light', and what is the interface to the 'lock
422 and 485 are balanced, but generally you can cheat and use them on
232. You will have to research the connector pin outs.
http://www.aviom.com/library/technical-resources/74_rs-232-rs-422-pinout-information.pdf
The unused input has a pull down resistor, so you can float it or ground
it. The
One of the output DB-9's says RS-422 on it. Is there a way to
convert it to RS-232 so I can use the Software package I found
for it ?
Thanks, Dick, W1KSZ
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On a visit to NIST Boulder (then known as NBS) many years ago (1978), I was
presented with a copy of NBS Monograph 155, "From Sundials to Atomic
Clocks" by one of the authors. I found it to be a fantastic read, it
answers all of those questions about Time & Frequency that you were afraid
to as
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