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lbaops:lbaoct2016:v544a

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lbaops:lbaoct2016:v544a [2016/10/26 18:08]
vlbi postwiki.py
lbaops:lbaoct2016:v544a [2016/10/27 14:06] (current)
sellings
Line 41: Line 41:
  
 ==== Comments: ==== ==== Comments: ====
 +Hobart and Ceduna:
 +The 4 x 16 MHz bandpass setup requires feeding two separate LOs into IFP#1 and #2 on the DAS/​frequency translator. For both Hobart and Ceduna the LOs should be set to 706 MHz (IFP#1) and 206 MHz (IFP#2) for the 4 x 16 MHz setup and 495 MHz for the 2 x 16 MHz setup. For Hobart use 16.37 GHz as the Agilent frequency and for Ceduna use 17.47 GHz. For the 4×16 MHz setup 880.2 and 900.2 MHz should give coherence in IF#1 and IF#2 respectively,​ while for the 2×16 MHz use 888.64 MHz to check coherence (these tones apply for both Hobart and Ceduna).
  
 +The level into IF#2 will change significantly between the two setups. Set the level into the DAS so that it is within range for both setups. Setup the system temperature measurement so that it works for both IFs for the v490d.1cm setup - it doesn'​t matter if the system temperature measurement doesn'​t work for the second IF during the ICRF observations as these are only to calibrate the delay. Please don't change the attenuation into the DAS when the setup changes as that may change the delay.
 ==== Observing comments for each antenna: ==== ==== Observing comments for each antenna: ====
 | [[ v544aatlog | At]] | [[ v544amplog | Mp]] | [[ v544acdlog | Cd]] | [[ v544aholog | Ho]] | [[ v544apalog | Pa]] | | [[ v544aatlog | At]] | [[ v544amplog | Mp]] | [[ v544acdlog | Cd]] | [[ v544aholog | Ho]] | [[ v544apalog | Pa]] |
lbaops/lbaoct2016/v544a.txt · Last modified: 2016/10/27 14:06 by sellings