Abstract: An embodiment of a digital rate meter is connected to a digital detection unit that measures radiation based on a detector signal output from a radiation detector and transmits, for each transmission period, a transmission signal including a count value. The digital rate meter has a reception section that receives the transmission signal including the count value; a count extraction section that extracts, for each transmission period, the count value and outputs an extraction count value; a pulse generation section that converts, for each transmission period, the extraction count value output into a pulse train of a corresponding pulse number and outputs the obtained pulse train; a rate calculation section that performs rate calculation based on the extraction count value to calculate a dose rate; and a recorder output section that outputs the dose rate.