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Planck-LFI CPV: DAE tuning and verification

Date Issued
2009
Author(s)
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Davis, Richard
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Wilkinson, Althea
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Franceschet, Cristian
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GREGORIO, Anna
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Leonardi, Rodrigo
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Lowe, Stuart
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Meinhold, Peter
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Mendes, Luis
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Poutanen,Torsti
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Tomasi, Maurizio
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Zonca, Andrea
Abstract
In this report, we show the results of the DAE calibration activity performed during the CPV test phase of the Planck/LFI instrument. The activity has the purpose of finding the best gain and offset values for the 44 ACA implemented in the LFI, and characterizing the so-called “offset problem”, i.e. a spurious offset that the DAE applies to scientific data under some conditions. During the CPV phase, the DAE calibration has been repeated twice, because after the first calibration a new configuration for the LFI ACA biases has been loaded and the absolute voltage levels fed to the DAE have changed consequently. This document shows the results for both calibrations.
Volume
PL-LFI-PST-RP-069
Uri
Rights
open.access
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PL-LFI-PST-RP-069-1.0-dae-calibration.pdf

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Planck-LFI CPV: DAE tuning and verification
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