v190c - Parkes update
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From: <John.Reynolds_at_email.protected>
Date: Wed, 23 Aug 2006 12:07:15 +1000 (EST)
Chris,
Problem found, i think: I had set the first (lower) frequency incorrectly
- it was set to 1650.100 MHz instead of 1650.000 MHz.
This means that for the entire fringe-test and for v190c up to 02:00:34 UT
the first frequency will be offset by exactly 100kHz.
This presumably explains why you found fringes only on one band, although
it should have been the lower frequency that was affected, not the higher.
does this make sense?
Apologies for the stuff-up - I'm assuming that 100kHz frequency offset can
be handled in s/w (though not necessarily in the online checker)?
Cheers,
John R
On Wed, 23 Aug 2006, Chris Phillips wrote:
>I suggest everyone stop the recorder and setup ready for 11am (01:00 UT
>start).
>
>Please don't run diskclean for the moment - I am still trying to run the
>frimge checker.
>
>Cheers
>Chris
>
Received on 2006-08-23 12:07:39
Date: Wed, 23 Aug 2006 12:07:15 +1000 (EST)
Chris,
Problem found, i think: I had set the first (lower) frequency incorrectly
- it was set to 1650.100 MHz instead of 1650.000 MHz.
This means that for the entire fringe-test and for v190c up to 02:00:34 UT
the first frequency will be offset by exactly 100kHz.
This presumably explains why you found fringes only on one band, although
it should have been the lower frequency that was affected, not the higher.
does this make sense?
Apologies for the stuff-up - I'm assuming that 100kHz frequency offset can
be handled in s/w (though not necessarily in the online checker)?
Cheers,
John R
On Wed, 23 Aug 2006, Chris Phillips wrote:
>I suggest everyone stop the recorder and setup ready for 11am (01:00 UT
>start).
>
>Please don't run diskclean for the moment - I am still trying to run the
>frimge checker.
>
>Cheers
>Chris
>
Received on 2006-08-23 12:07:39