Re: [Discuss-gnuradio] Reference Clock power level for Ettus N210

[Attila Kinali]

On Wed, 23 Apr 2014 17:37:44 +0200
Attila Kinali <address@hidden> wrote:

> For all else. Using a good quartz oscillator is more than good enough
> and you dont need to care about anything but having approximately the
> right signal levels. 

Let me give you a bit more information here.
According to the N210 schematics, the clock's PLL has a BW of 3kHz.
This means that noise beyond 3kHz is dominated by the VCXO on board.
Noise blow 3kHz is dominated by the reference clock. This means, that
if you can keep the noise of the reference clock low at frequencies lower
than 3kHz, then you will have good performance.

Depending on what you use as refernce clock, you have to identify the
noise sources and their properties and then work on those that have
most impact on your performance.

                        Attila Kinali

-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
                -- Tirin, The Dispossessed, U. Le Guin