[time-nuts] Holding Phase constant

2012-06-26 Thread WarrenS
Two part question:

I'd like to test the effect of small signal level changes on the phase output 
of a high resolution linear phase detector at ADEV values below 1e-16 and tau 
1000 sec.
I'm looking for suggestions on how I can manually vary the signal amplitude of 
one of it's 10 MHz sine wave inputs by up to say 3 db with ~0.1 db step size,  
while keeping the signal's phase constant in the sub 0.1 picosecond range.

Is there any data available on how much the signal amplitude of a LPRO Rubidium 
Oscillator or a HP10811 class Oscillator changes over temperature and time when 
driving an exact constant resistive load?

ws
  
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Re: [time-nuts] Holding Phase constant

2012-06-26 Thread Azelio Boriani
Sub 0.1pS range for which time extension? Only during the amplitude change?

On Tue, Jun 26, 2012 at 8:58 PM, WarrenS warrensjmail-...@yahoo.com wrote:

 Two part question:

 I'd like to test the effect of small signal level changes on the phase
 output of a high resolution linear phase detector at ADEV values below
 1e-16 and tau 1000 sec.
 I'm looking for suggestions on how I can manually vary the signal
 amplitude of one of it's 10 MHz sine wave inputs by up to say 3 db with
 ~0.1 db step size,  while keeping the signal's phase constant in the sub
 0.1 picosecond range.

 Is there any data available on how much the signal amplitude of a LPRO
 Rubidium Oscillator or a HP10811 class Oscillator changes over temperature
 and time when driving an exact constant resistive load?

 ws

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