[evlatests] Array Status

Rick Perley rperley at nrao.edu
Wed Dec 4 19:05:33 EST 2024


With all the problems with the switches ongoing, I ran a 1-hour test run this afternoon which changes band every 30 seconds.  All Cassegrain bands were cycled through.  Antennas 9, 12 and 17 were out of the array at the time.

I used the 8-bit samplers.

Below is a summary of the results.

L-band:  All good on AC side.  ea10 dead in LCP on BD side
S-band:  All good on AC side.  ea10 deadin LCP on BD side.
C-band:  All good on AC, and BD sides, although ea15 was intermittent in LCP on both.
X-band:  ea15 dead on AC side in LCP.  All good on BD side.
Ku-band:  ea19 dead on AC side in RCP.  All good on BD side.
K-band:  ea07 dead in LCP on AC side.  ea23 dead on RCP on BD side.  ea02 erratic on both sides.
Ka-band:  Same as for K-band.
Q-band:  Same as for K-band, except ea02 was very weak on all IFs —pointing, perhaps?

That's the quick summary.  I'll look more closely tomorrow.

Rick





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