[evlatests] More on 12.5 MHz noise

[Rick Perley]

    Ken says all this is possible -- *in principle*. 

    I've just reloaded some 1995 'PA', 12.5 MHz BW, data, and calibrated 
it.  The results are simply perfect.  All histograms are identical, and 
correct, for all combinations and correlators.  The only differences 
between these data and the current sets are the correlator controller, 
the Modcomps, and the integration time. 

    Only one of these can be modified now, so I'm right now trying a 
test where I vary the integration time. 

    Rick

Jim Ulvestad wrote:
> Hi all,
>
> Forgive me if this is figured out--I'm just reading a
> daily digest.
>
> There's a lot of discussion about the effective integration
> time being less.  BUT I don't see that discussion combined
> with the fact that the cross-hands show normal sensitivity.
> Thus one would need a cause that throws away ~75% of the
> RR and LL data, but passes through all the RL and LR data,
> right?  Are the recirculators doing something different
> with the cross-hand data compared to the parallel-hand?
> Could one imagine that the parallel-hand data is somehow
> getting 50 MHz that includes 12.5 MHz of signal and
> 37.5 MHz of pure noise?
>
> Jim
>
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