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lbaops:lbamay2012:re07a [2012/05/10 09:55]
chris.phillips
lbaops:lbamay2012:re07a [2015/12/18 16:38] (current)
Line 33: Line 33:
 ^DAS Mode           | Mark5 | ^DAS Mode           | Mark5 |
  
-Ftp: [[ftp://ftp.atnf.csiro.au/pub/people/vlbi/re07/re07a]]+Ftp: [[ftp://ftp.atnf.csiro.au/pub/people/vlbi/radioastron/re07a]]
 ---- ----
  
Line 49: Line 49:
 ====  Disabling Noise Cal ==== ====  Disabling Noise Cal ====
  
-Disabling Noisecal 
  
 ATCA:  type "set diode off"  in caobs ATCA:  type "set diode off"  in caobs
Line 56: Line 55:
  
 Parkes:  pkmc -> "Cal Control Unit" -> select current Rx on matrix and set to "off" 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%
 +
  
  
lbaops/lbamay2012/re07a.txt · Last modified: 2015/12/18 16:38 (external edit)