[evlatests] antenna 24, C band

[Rob Long]

I assumed that this email was referring to ant 18.  I need to look into 
the specs on the optical mux that we installed vs the one I removed. 
The only difference (besides the 1 meter patch cables) is the different mux.

Rob

Ken Sowinski wrote:
> The C band recevier was installed yesterday and was shown
> to work today.  Delays and focus were set.  The F317 is
> jury rigged and the noise tubes are not switching yet.
> As was reported elsewhere the T5 for IF D was broken,
> it added a large constant to the SD measurement, and
> was replaced.
> 
> The work yesterday to prepare for the receiver installation
> had an interesting effect on delays.  There is a progression
> of about 40 ns more path length for each IF going from IF D 
> to IF A.  e.g.,
> A  -120
> B   -80
> C   -40
> D     0
> If it is true that each IF is at a higher (or lower)
> wavelength in the fiber then it behaves like a highly
> dispersive element has been added to the optical path.
> 
> 
> _______________________________________________
> evlatests mailing list
> evlatests at listmgr.cv.nrao.edu
> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests