[evlatests] Ant 11

Tom Frost tfrost at nrao.edu
Thu Jul 19 13:35:15 EDT 2007


exactly *what* FRM problem???

are you referring to the problem we fixed
yesterday afternoon???...it wasn't talking
to the ACU/FRM MIB because of wiring issues
with the INTF BD conns wired "mirror image"

I was able to run FRM repeatibility tests
yesterday afternoon over the ethernet from
the Servo Shop....both axis passed tests...

BTW.....I was using Macks' very fine EVLA
software to run the tests...I *did* notice
that the 'regular' OPS screens showed numerous
FRM error messages, but it still ran correctly
& went to the commanded positions...

sounds like a software issue rather than a HW
issue....let us know if it doesn't seem to work
using the 'regular' OPS software....

Rob Long wrote:
> There is a problem with the FRM on ant 11 which the DCS group is 
> planning on looking into tomorrow.  So even though we should have 4 IFs 
> working by the end of the day, we may not be able to fringe until next week.
> 
> Rob
> 
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-- 

Tom Frost WA6OML
Technical Specialist II
National Radio Astronomy Observatory
VLA Site--Plains of San Augustin
New Mexico, USA








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