[evlatests] C-Band, 30 July

[Ken Sowinski]

On Tue, 31 Jul 2007, Rick Perley wrote:

>    All EVLA antennas outfitted at C-band fringe.  However, the latest
> to be outfitted -- antenna 21, needs some attention.  The amplitudes on
> IFs A and C are ten times too high, while on B and D they are 2 times
> too high.  More importantly, there are occasional very large jumps (by
> factors to 10 or more) in amplitude.    The phases are not affected by
> these jumps.

The reason for this is that the noise tubes are not switching.
The data looks perfectly fine with no T_sys correction applied.