Initially the inbuilt pump of RAD7 runs automatically for
5 min duration to aerate the sample and deliver the degassed
radon to the RAD7 measuring chamber.After this time period
the pump stops automatically and the system wait for another
5 min interval to start counting. After the 5 min of counting
period, the data along with the respective bar charts and cumulative
spectra of each sample are printed out on the printer
attached with the instrument.