Bruce Griffiths wrote:
> Jim Robbins wrote:
>
>> My SR620 fails in its Self Calibration routine at "Cal Error 07". The Users
>> Manual describes this error as a problem with the "Start TAC" (Time to
>> Amplitude Converters) and indicate that this flags a Hardware problem in the
>> circuits w
Hi:
Recently the Datum 4065 has developed a major fault.
Cesium fault numbers 3 & 5.
Cs fault 3 is Zeman Pedestal >160 mv
Cs fault 5 is C-Field Current > 20.0 ma
Status 3 menu sows the C-Field current at 20.2 ma.
Status 4 menu shows the C-Field Adjust at +1785 and it should be between -50
and +5
Jim Robbins wrote:
> My SR620 fails in its Self Calibration routine at "Cal Error 07". The Users
> Manual describes this error as a problem with the "Start TAC" (Time to
> Amplitude Converters) and indicate that this flags a Hardware problem in the
> circuits which perform the analog interpolat
My SR620 fails in its Self Calibration routine at "Cal Error 07". The Users
Manual describes this error as a problem with the "Start TAC" (Time to
Amplitude Converters) and indicate that this flags a Hardware problem in the
circuits which perform the analog interpolation between the 90 MHz cloc
My SR620 fails to complete its Self Calibration Routine by showing "Cal
Error 07". It won't proceed beyond that point, although at times it will
jump to Cal 13-16 programs. Cal Error 07 is listed as flagging "hardware
problems" in the "Start TAC" (Time to Amplitude Converters) which are "the
cirs
Bruce Griffiths wrote:
> Brooke Clarke wrote:
>
>> Hi Bruce:
>>
>> The Ref Output on the front panel of the SR620 is derived (1/10,000) from
>> the
>> EXT IN on the rear panel. So when you apply a 10 MHz signal to EXT IN you
>> get
>> a 1 kHz REF OUT. Appendix B in the PSR10 Rubidium sourc
Brooke Clarke wrote:
> Hi Bruce:
>
> The Ref Output on the front panel of the SR620 is derived (1/10,000) from the
> EXT IN on the rear panel. So when you apply a 10 MHz signal to EXT IN you
> get
> a 1 kHz REF OUT. Appendix B in the PSR10 Rubidium source manual describes
> how
> to use this
At 06:11 PM 10/8/2008, Robert Darlington wrote...
>Hello all,
>
>Would any of you happen to know where I can find a mating connector
>for the
>Efratom FRS-C rubidium standard? I see one eBay ad via a Google
>search
>listing it as a "Cannon P/N DAM11WIS", but searches on the ITT/Cannon
>website d
- Forwarded Message
From: Brooke Clarke <[EMAIL PROTECTED]>
To: Discussion of precise time and frequency measurement
Sent: Thursday, 9 October, 2008 10:43:07 AM
Subject: Re: [time-nuts] What is the best counter for a Time Nuts?
Hi Bruce:
The Ref Output on the front panel of the SR62
High voltage power lines subject to lightning strikes have reclosing
breakers that allow the fault arc to extinguish before reclosing.
Last I knew (1968) the reclosing delay was 30 cycles or 1/2 second.
Since the breaker recloses into a system of thousands of generators,
there is no phase change,
Sorry, I guess I'm having one of those days. I managed to find it with a
partial part number search. The correct (as far as I can tell) part number
is DAM11W1S, and Newark part number 14C7745. They're going for $4.20 each
but don't know for sure if it comes with pins!
-Bob
_
The part number is 11W1S (one instead of letter i). Mouser has several
connectors with 11W1 contact arrangement, and surely that some are
adequate for the FRS-C. Try exploring this link:
http://www.mouser.com/Search/Refine.aspx?FS=TRUE&Ntt=*11w*&Ne=3977227+1447464&N=3977227+1323038&Ntx=mode%2bma
Hi Bob:
I think you have almost the correct part.
The Stanford Research PRS10 uses the same connector, see:
http://www.prc68.com/I/PRS10.shtml
The ITT Cannon web page shows many stocking distys for it and the coax insert:
http://www.ittcannon.com/support/stockcheck_result.asp
Have Fun,
Brooke C
Hello all,
Would any of you happen to know where I can find a mating connector for the
Efratom FRS-C rubidium standard? I see one eBay ad via a Google search
listing it as a "Cannon P/N DAM11WIS", but searches on the ITT/Cannon
website don't turn up any hits.Is this a valid part number?
Than
Hi Bruce:
The Ref Output on the front panel of the SR620 is derived (1/10,000) from the
EXT IN on the rear panel. So when you apply a 10 MHz signal to EXT IN you get
a 1 kHz REF OUT. Appendix B in the PSR10 Rubidium source manual describes how
to use this along with the arming function to ave
Tom Van Baak wrote:
> Hi Ulrich,
>
> My understanding is that 1) the 53132A has a single-shot
> resolution of about 150 ps, but also 2) it can do something like
> 200,000 phase measurement per second for CW RF inputs.
>
> In frequency mode, the frequency computed and displayed
> each second is the
Tom Van Baak wrote:
>> Big question: If the single shot resolution is only 3-4 times better
>> that that of the 53131 and much inferior to the 20 ps of my SR620, how
>> does the 53132 manage to be THAT GOOD A PERFORMER? Magic? Black art?
>>
>
> Hi Ulrich,
>
> My understanding is that 1) the 5
> Big question: If the single shot resolution is only 3-4 times better
> that that of the 53131 and much inferior to the 20 ps of my SR620, how
> does the 53132 manage to be THAT GOOD A PERFORMER? Magic? Black art?
Hi Ulrich,
My understanding is that 1) the 53132A has a single-shot
resolution of
Ulrich Bangert wrote:
> Gentlemen,
>
> up to now I have been thinking that I am pretty well informed about
> current counter technology but some experiences of the last days make me
> doubt. The following applies to frequency measurements of a 10 MHz
> signal.
>
> I have received some data measured
> On this latter point, let's say that a clock driven by the mains is
> correct to within 10 seconds/day (about 1e-4), but in the longer term
> accuracy is improved. To reach even 1ppm level, you need to accumulate
> time for 100 days. What chance is there of accumulating for 100 days
> without a p
Ulrich,
> up to now I have been thinking that I am pretty well informed about
> current counter technology but some experiences of the last days make me
> doubt. The following applies to frequency measurements of a 10 MHz
> signal.
>
> I have received some data measured with an Agilent 53131 count
Gentlemen,
up to now I have been thinking that I am pretty well informed about
current counter technology but some experiences of the last days make me
doubt. The following applies to frequency measurements of a 10 MHz
signal.
I have received some data measured with an Agilent 53131 counter from
Murray,
Having somewhat started this topic, I'd like to say thank you for this
interesting post. Indeed, I believe that it is probably possible to
gain some form of freq standard from the mains, although it would have
to be over a long term period and it does not appear that there is any
statutory
Hello all,
I'm playing around with an NTP server using a Blackfin processor and
uClinux, and a Oncore M12M-Timing. The board is our H8606,
http://www.hvsistemas.com/en/prod/H8606.html , with the standard crystal
oscillator replaced with a FOX924B TCXO,
http://www.foxonline.com/pdfs/fox924.pdf
24 matches
Mail list logo
