Intro:

• 25MHz 4096 channels polA, polB in sbc1,2
• 12.5MHz 4096 channels polA,polB in sbc 3,4
• 1 second dumps
• 300 secs on,off source, 60 secs on , of calibrator.

• average onsrc, offsrc, onbp,offpb
• compute onsrc-offsrc, onbp-offbp
• compute on/off= (onsrc-offsrc)/(onbp - offbp)
• there is a 422 to 440 MHz rf filter in the system. Ignore the results outside of this range.
• For the plots:
•  black is pola, red is polB.
• top frame is the 25 MHz spectra, bottom frame is the 12.5 MHz spectra.
• The vertical scale is in units of the calibrator flux. This makes is a little hard to compare different sources. You should probably compare the amplitude of the ripple with the baseline noise.
  

• 27jul11:
  
• double position switch processed data for each source (.ps) (.pdf)
• There are 14 sources
  
• source 8 and 9 show the largest ripple in polA.
  
• 29jul11:
• double position switch processed data for each source (.ps) (.pdf)
• 5 sources
• source 4 is the worse
  
• over plot polA, polB 300 sec off source avg (.ps) (.pdf)
• The 300 sec off source positions for each dataset are overplotted.
• black is polA, red is polB
• Page 1 over plot all 5 sources (with an offset for display)
• page 2-6 over plot polA,B for each source separately.
• There is a lot more structure in the polA bandpass.
• 30jul11:
• double position switch processed data for each source (.ps) (.pdf)
• 14 sources
• 01aug11:
• double position switch processed data for each source (.ps) (.pdf)
• 5 sources

• 17mar12: ripple continues in polA