[time-nuts] 35601A as stand-in for 11848A ?

[Bruce Griffiths]

Bruce Griffiths wrote:
> Phase noise calibration standard.
>
> Oops, since the lower frequency limit of a hybrid combiner doesn't
> extend to dc (a low frequency limit of 2-4KHz is possible) a resistive
> power summing circuit would actually be required for low frequency offsets.
>
> Bruce
>
>   
Correction #2

To evaluate the effect of the PLL its actually necessary to add the
gaussian noise to the output of one of the OCXO's in the stnadard PLL setup.
Using a single source to drive both mixer ports (with and without noise)
will not measure the effect of the PLL.

Bruce