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Continuous calibration

Modified 13:54, 5 Jun 2015 by vicente | Page History

    Version as of 18:41, 23 Nov 2024

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    Table with the current status of the EVN stations for the continuous calibration (band dependent)

     

    Current status of the continuous calibration implementation at the stations

     
      L Band C band M band X band K band Q band Last updated
    Ar              
    Bd              
    Ef              
    Hh              
    Jb              
    KVN              
    Mc              
    Mh              
    Nt              
    On              
    Sr              
    T6              
    Tr              
    Sv              
    Wb              
    Ys - 80 Hz 80 Hz 80 Hz 80 Hz No 5-06-2015
    Zc              

     

    • The DBBC allows to detect synchronously an 80 Hz signal integrating the power from the cal off and cal on phases.
    • The 80 Hz signal can be obtained from output "Cont Cal".
    • Continuous cal can be enabled by typing:
      • cont_cal=on (at the FS)
    • In some cases the signal is inverted and you can get negative Tsys. This is a pending issue to be solved. It can be solved by patching the FS, but this solution should be avoided in the future and look for a cleaner one. The DBBC allows to invert the signal but this does not work at V105 version yet.
    • station.prc should be ready to switch between continuous calibration for some bands and traditional calibration for others.