[evlatests] June 6th.

[vdhawan at aoc.nrao.edu]

EVLA state vector (matrix really), June 06.

I record some details for reference, though some are known or can be
deduced from knowledge of, e.g., 
* which antennas/IF's have new L302's; 
* which are expected to be dead/absent; etc.

The phase jumps upon change of band appear to be fixed at antenna 13,
on both L302's. On 14 and 16, L302-1 appears good, L302-2 not, though
its hard to be sure since there is missing data; 18 still has jumps,
based on even sparser data.

G  = Good = nominally same as VLA antenna

Gd = amplitude dropout on 10s, otherwise G.

W  = Weak fringes

D  = Data present, no fringes.

A  = Absent, no data.

-------------------------------------------------------------------

C BAND

ant	A	C	B	D

13	Gd	Gd	Gd	Gd

14	G	G	G	G
	
16	D	D	G	G

18	A	A	A	A

Closure errors from insufficient sideband rejection in T304 filter:
Not seen - declared fixed, subject to more stringent tests.

-------------------------------------------------------------------

K BAND

ant	A	C	B	D

13	G	G	G	G

14	W	W	W	W

16	W	W	W	W

18	A	A	A	A

on 14 & 16, IFs AC are weaker than BD. In addition, the strength is
variable, which could be poor pointing.

-------------------------------------------------------------------

L BAND

ant	A	C	B	D

13	G	A	D	D

14	G	G	G	G

16	A	A	G	G

18	G   	W	W	A	

-------------------------------------------------------------------

X BAND

ant	A	C	B	D

13	Gd	Gd	Gd	Gd

14	G	G	G	G

16	A	A	G	G

18	Gd	Gd	Gd	A

13: phase spins for a few seconds at scan start.

14: phase jump a few sec after scan start

16, 18: phases OK.

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