Goal of the Gain Calibration procedure is to calibrate the noise generator by performing several Total Power measurements on a set of radio sources with radio flow known from the literature. Therefore, for each radio source, these Total Power measurements can be recorded:
ON source (on the radio source, with noise generator OFF)
OFF source (off radio source with noise generator OFF)
CAL (off radio source with noise generator ON)
Measurements recorded in every step can be used to calibrate the noise generator and the radio telescope and this will allow to record antenna temperature and flux measurements. NSGen noise generator for absolute calibration comes with noise generator (1), connection cable for H142-Pro receiver (2), metallic clamps for installation (3).