[Premium-Rx] Fw: Measurements on Racal 9400 OCXO

[Michael O'Beirne]

----- Original Message ----- 
From: "Michael O'Beirne" <michaelob666 at ntlworld.com>
To: "Stein-Olav Lund" <stein.olav.lund at hist.no>
Sent: Tuesday, April 21, 2009 10:22 PM
Subject: Re: [Premium-Rx] Measurements on Racal 9400 OCXO


> Hi there
>
> The change in power taken by an ovened oscillator as it warms up from cold 
> is entirely normal.  As an example I recently acquired a mains power 
> monitor to find out what it was costing to run my test gear as I tend to 
> run my frequency standards continuously.  I did some measurements on my 
> HP105 crystal reference oscillator.  This is probably one of the most 
> stable ovened crystal oscillators ever made.
>
> The initial power consumption was 76 watts dropping to 15 watts after 10 
> minutes.
>
> The frequency response also shows the characteristics of a typical ovened 
> oscillator - it rises then drops and slowly comes to the nominal 
> frequency.
>
> 73s
> Michael
> G8MOB