[evlatests] EVLA status today.

Vivek Dhawan vdhawan at aoc.nrao.edu
Thu Jan 19 17:55:06 EST 2006


			Jan 19.

A short run was done to check for aliasing or closure errors,
after the new T304 filters were put in. Aliasing was gone, at
least at the cursory level. More extensive tests will follow.

However, new mutations have arisen. Intelligent design, anyone?


	C-band, MST 11:45-12:00

Ken reported all antennas working at all expected IF's and bands
just before this time.

14 and 16 working OK. 16 has warm receiver, lower amplitudes.

The signature of closure errors was amplitude and phase modulation
on timescales of a few seconds. This was not seen any more.


	X-band, 12:00-12:10

13 A: good data for about 1 minute, absent otherwise. 13 C fine.

14 and 16 no fringes at any IF.


	K-band, 12:10-12:20

14, 16 working OK all IFs.

	
	L band, 12:20-12:30

14, 16 OK. 13 A absent. 13 C present, no fringes.

Vivek.






More information about the evlatests mailing list