[evlatests] ea02 report
Jim Jackson
jjackson at nrao.edu
Tue Jun 17 15:28:53 EDT 2008
The HVAC shut down in Ant 2 last night after a power glitch.
According to the archive, the L301-2 failed while the temperature was
high. It will be replaced tomorrow morning.
Jim
At 01:11 PM 6/17/2008, Ken Sowinski wrote:
>Antenna 2 is getting better. C band receiver cables are now properly
>connected. Pointing now looks good enough for an X band pointing run,
>which will likely happen next week after the north arm antennas are
>moved. Delays and focus have been set for all bands. All bands but
>P band have been tested and shown to work.
>
>Two problems remain. BD is not working at L and C bands. The
>problem looks like an L301. It does not lock when at C band and does
>not seem to be doing the right thing at L band. Rebooting it did not
>help. It worked properly yesterday.
>
>Correlated amplitude is less than expected in IF B at all bands. This
>is likely in the DTS, or the VLA T5 and sampler. One of Rick's
>very short integration time observations might point to the culprit.
>
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