[time-nuts] Of rubidium life and piggy-bank anemia....
didier at cox.net
Sat Dec 1 00:56:46 EST 2007
Maybe quasi-simultaneously is adequate, using a switch to sample the 3 pairs
The HP59307A can be used for that under GPIB control.
I would think the main reason for doing it simultaneously is so that
whatever source of error exists (temperature, vibration, etc) will affect
the 3 oscillators the same way. The switch won't help with vibration, but it
will help with temperature and other slow changing variables, such as time
> -----Original Message-----
> From: time-nuts-bounces at febo.com
> [mailto:time-nuts-bounces at febo.com] On Behalf Of Bruce Griffiths
> Sent: Friday, November 30, 2007 11:00 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Of rubidium life and piggy-bank anemia....
> Magne Mæhre wrote:
> > Ulrich Bangert wrote:
> >> Use the three-cornered-hat method to rank your clocks!
> > The literature seems to say that you need to do the measurements
> > simultanously to get good results from the TCH method. I
> guess most
> > of us have only one TIC at home, so I wonder how the
> results will be
> > affected by taking them one at a time ?
> > --Magne
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> So use a gate array to implement a multichannel time stamp device.
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