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lbaops:lbamay2012:re07b [2012/05/18 11:16]
chris.phillips
lbaops:lbamay2012:re07b [2015/12/18 16:38] (current)
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 ===== Comments: ===== ===== Comments: =====
 +
 +**//NOTE NOTE NOTE NOTE//**
 +
 +This is a non-standard setup including
 +
 +  *  USB/LSB DAS profile
 +  *  **Turn noise cal off**
 +  *  **Turn DAS Gain loop off**
 +  *  Turn phasecal off if present
 +
 +====  Disabling Noise Cal ====
 +
 +
 +ATCA:  type "set diode off" ​ in caobs
 +
 +Mopra: In attest under "​noiscl",​ select "​LSNoise"​ to off .   (to confirm with Tasso)
 +
 +Parkes: ​ pkmc -> "Cal Control Unit" -> select current Rx on matrix and set to "​off"​
 +
 +====  Disabling Noise Cal (ATNF DAS GUI) ====
 +
 +  *  Adjust external attenuation so that the IF level is approx mid band
 +  *  Select "​Details"​ under "​Monitor View"
 +  *  Monitor the "​Level"​ value for IFP#1 and IFP#2 and estimate a time averaged value (Tid only needs to worry about one IFP)
 +  *  Record the two average level values
 +
 +  *  Under "​Config Sftw" select "​Filters --> Band Spliter"​
 +  *  Set "Gain Control"​ to Manual for both IFP  (in the lower right region under "​Statistics"​
 +  *  Set the two Gain levels to  4*(255-Level) ​ where level is the value to measured above
 +  *  Click the "​Config Hdw" button
 +
 +  *  On the "​Details Monitor view' display check the Level is ~ 128
 +  *  Adjust the attenuation if the level wanders away too much from 128 - each number is ~ 0.1dB.
 +  *  Monitor VLBI sampler statistics stay around nominal 17.3%/32.7%
 +
  
 ===== Observing comments for each antenna: ===== ===== Observing comments for each antenna: =====
lbaops/lbamay2012/re07b.1337303816.txt.gz · Last modified: 2015/12/18 16:38 (external edit)