ATNF VLBI Wiki

Setup ra18cm2:

Ftp: ftp://ftp.atnf.csiro.au/pub/people/vlbi/radioastron/re07a

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

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”

• 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%

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Parkes onsource flagging
ATCA onsource flagging
Mopra onsource flagging
Mopra Tsys (plot)
Parkes Tsys

ATCA Weather
Mopra Weather
Parkes Weather

Mopra Tsys
Parkes Tsys
ATCA Tsys