Hi Luciano --
Thanks for posting that. There's a subtle point about the noise floor
that's forever been on my list of things to investigate: the noise floor
should be lower in timestamp mode than in time interval (A->B) mode.
That's because in timestamp mode there is jitter contribution only from
a single measurement, whereas in time interval mode there is a
measurement from each channel so you have two jitter components. So a
guess is that the floor should be about sqrt(2) lower in timestamp mode.
Someday I will test that theory.
John
----
On 1/8/19 12:38 PM, [email protected] wrote:
.gif of the TICC noise floor.
Luciano
Da "time-nuts" [email protected]
A [email protected]
Cc
Data Tue, 8 Jan 2019 18:31:02 +0100
Oggetto Re: [time-nuts] Short term 10MHz source
Hi Paul,
here the TICC noise floor.
Regarding the GPS/TICC versus a good Rubidium standard like the HP5065A ,
you cannot apreciate the Rubidium ADEV stability lower than 10Kseconds.
Luciano
Da "time-nuts" [email protected]
A "Discussion of precise time and frequency measurement"
[email protected]
Cc
Data Sat, 5 Jan 2019 12:35:26 -0000
Oggetto Re: [time-nuts] Short term 10MHz source
Hi All sorry for a new be question but what is a TICC regards Paul B UK
-----Original Message-----
From: time-nuts [mailto:[email protected]] On Behalf Of Chris
Burford
Sent: 02 January 2019 03:56
To: Time Nuts List
Subject: [time-nuts] Short term 10MHz source
I have a situation in which I have access to a GPSDO 10MHz source but for
only about 10-12 hours at a time. My current residence does not allow a
permanent GPS antenna therefore I am limited in its use.
I do realise that the long term stability of the GPSDO is somewhat superior
to a Rubidium source. I'm planning on using my TICC to validate both my
GPSDO and RFS. I'm aware that such a short "power on" period is somewhat
counterproductive but I have no other options. I'd like to know if a 6-8
hour window for the GPSDO is sufficient for use as a 10MHz source for the
TICC.
I appreciate any and all comments.
Regards, Chris
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