[time-nuts] Z3816a and newbie questions

[Alberto di Bene]

Rex wrote:

>>  Doesn't that number take into account also the possibility of an
>>  holdover?
>>    
>>
>Possibly. The manual I quoted from doesn't say more, other than phase
>noise numbers.
>
>I would think that the 10811 should do better than 1 x 10^-9 even
>without adjusting for drift in holdover. This strange documentation is
>one reason I asked my original question.
>  
>
You are right. From the HP 10811 D/E specs:

1.3.1.1      < 5 x 10-10 / day after 24 hour warm up when:
1.3.1.1.1    oscillator off time was less than 24 hours and
1.3.1.1.2    oscillator aging rate was < 5 x 10-10 / day prior to turn off.

1.3.1.2      < 5 x 10-10 / day in less than 30 days of continous operation for off
             time of greater than 24 hours.


73  Alberto  I2PHD