[evlatests] No switched power in antenna 12, S-band

[Chuck Kutz]

This is true, there is a work order open on it and we are looking into it.
If we have to bring it back to the lab, it will be early December at best. 
Until today, we were actively working on two S-bands in the lab. One new and
one in for a stubborn leak repair. 

We sent the new S-band out for a leak check yesterday, just informed this
morning that it passed. We will install it next week.

The one under repair activity is close to being completed. 


Chuck

  

-----Original Message-----
From: evlatests-bounces at nrao.edu [mailto:evlatests-bounces at nrao.edu] On
Behalf Of Ken Sowinski
Sent: Tuesday, November 23, 2010 2:45 PM
To: Rick Perley
Cc: evlatests at aoc.nrao.edu
Subject: Re: [evlatests] No switched power in antenna 12, S-band

On Fri, 12 Nov 2010, Rick Perley wrote:

>    Antenna 12 is showing essentially zero switched power (PDif) at
> S-band -- the values are measured in milli-counts, when they should be
> near 2.
>    The problem is in all four IFs -- but does not affect the other bands.

There is no switched power seen in the downconverters either.
Since the other bands are all OK, it must be a problem at the
S band receiver package or the F317.

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