Cumulative System performance
The cumulative system performance is
plotted for each receiver. The plots are limited to 2000
measurements. When something occurs that may change the gain
of the system (moving a horn, shimming the elevation rails) then a
new epoch will be started. The old data is moved to the old
system performance data page (the old data link points to
- The points plotted per page are limited to the 2000 most
recent points. This could make is so that the 1st multi
frequency page could cover less time than the individual
frequency pages. This constraint is not used for the az,za page
or the hour of day page (these include all of the data).
- dec17 note. so much data was taken with sbn,cb right after
maria (much with no td tracking) that they use up most of the
2000 points. to get previous data, look at the monthly page and
go back in time.
430 dome receiver
430 ch (linefeed) receiver
sband wide (2-3 Ghz)
sband high (3-4 Ghz)
cband (4-6 Ghz)
cbandHi (6-8 Ghz)
xband (8-10 Ghz)
Miscellaneous multi frequency
- 01mar03 thru lastModdate (reshimming of elevation
rails to - current date)
430 dome receiver ()
- 01mar03 thru lastModDate (reshimming rails to current
430 ch receiver () (top)
- 29jun09 thru lastModDate (cooled rcvr to - current
The data is first plotted with all pixels
together. Color is used to code the pixel number. After the combined
plot there are 7 more plots showing each pixel by itself. For these
plots color is used to distinguish the source used. The data
is 100 Mhz centered at 1420 Mhz.
- 01mar03 thru lastModDate (reshimming rails,new
rcvr to - current date)
- 29nov04 thru lastModDate (start alfa calibration
scans , to current date)
01mar03 thru lastModDate (ddmonyy reshimming of
elevation rails to - current date).
27feb12 to 04mar12 sbn pointing
model 18 .so pointing errors are large.
14may04 thru lastModDate (diode replacement) to -
04feb04 thru lastModDate (horn lowered .8 inches,new
cals - current date).
- 25may05 thru lastModDate ( new amps installed
to current date).
- 08feb04 thru lastModDate ( installation to
- 15mar04 thru last mod date. (newcals,amps,rcvr work
to current date)
vs lambda (all rcvrs) for data taken 2004
frequency performance after reflector adjustments.