[evlatests] Negative Switched Power!!!
Bruce Rowen
browen at nrao.edu
Fri May 27 17:49:50 EDT 2011
On May 27, 2011, at 3:37 PM, Rick Perley wrote:
>
> How sure are we that the 'on' and 'off' durations are precisely
> equal?
The noise diode is modeled on the station boards. The board is
provided an epoch, period, and phase for the noise diode switching.
This establishes a model 20Hz signal
which is used by the sub band filters to collect power integrations
and validity counts into noise diode on/off bins. Resolution of this
model is down to 1/256MHz.
-Bruce
>
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