We give the calibration and scientific performance parameters of the PlanckLow Frequency Instrument (LFI) measured during the ground cryogenic testcampaign. These parameters characterise the instrument response and constituteour best pre-launch knowledge of the LFI scientific performance. The LFI showsexcellent $1/f$ stability and rejection of instrumental systematic effects;measured noise performance shows that LFI is the most sensitive instrument ofits kind. The set of measured calibration parameters will be updated duringflight operations through the end of the mission.
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机译：我们提供了在地面低温测试活动期间测量的普朗克低频仪器（LFI）的校准和科学性能参数。这些参数表征了仪器的响应特性，并构成了我们对LFI科学性能的最佳启动前知识。 LFI表现出出色的$ 1 / f $稳定性和对仪器系统效果的拒绝；测得的噪声性能表明LFI是同类仪器中最敏感的仪器。整个飞行过程中，直到任务结束，都将更新这组测得的校准参数。
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