From: Michelle.Storey_at_EmailProtected
Date: Wed Aug 07 2002 - 14:35:27 EST
Dear Eileen
Thanks for the plot! When the receiver moves to a new frequency, and before
it takes a signal strength measurement at the new frequency, it is important
for the receiver to pause for a while, so that its internal electronics can
settle. The time for which it pauses is the dwell time. This should always
be set to at least 50ms, as we have found that this gives enough settling
time so that results are consistent. You may like to experiment with this
yourself. Set a very short dwell time and do a couple of scans and see how
consistent the results are, compared to using a longer dwell time. (Some
variations will be real variations in signal strength between scans, of
course). Actually, this may not be possible, as Oliver (our software
engineer) may have set a minimum dwell time in the software - I'll check on
my setup when I get the chance.
I look forward to seeing you in Kimba next week!!
Best regards
Michelle
Dr Michelle Storey
SKA Outreach Project Officer and
Managing Editor, PASA
CSIRO ATNF
PO Box 76
Epping NSW
AUSTRALIA 1710
Chair, International Astronomical Union Working Group on Publishing
email: Michelle.Storey_at_csiro.au
Phone: +61 2 9372-4590
Fax: +61 2 9372-4310
Read the latest papers on the PASA site:
http://www.publish.csiro.au/journals/pasa/
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