Method for automatically producing a service plan of a decoder box device, said decoder box device including a plurality of receivers (130.X) and recording the service plan produced in a configuration memory after implementation of the following steps: - distributing of the receivers into two groups, with each group being dedicated to a task: - a first group of receivers is dedicated to a task of exploring a frequency band to be explored, a band of which the lower limit and the upper limit are known, an instance of an exploration task supplies a list of frequencies carrying services, the exploration tasks instances are synchronised via a first semaphore protecting a value of the next frequency to be explored, an exploration task instance stops if the value of the next frequency to be explored is greater than the upper limit of the frequency band to be explored; - a second group of receivers is dedicated to an analysis task of the frequencies of the list of frequencies carrying services, an analysis task instance supplies a table of services, the analysis task instances are synchronised via a second semaphore protecting an identifier of a next frequency to be analysed, an analysis task instance stops if the list of frequencies carrying services is empty and if the value of the next frequency to be explored is greater than the upper limit of the frequency band; - creating (1030, 1040) of task instances according to the distribution of the receivers, with each receiver distributed being associated with a task according to the group thereof, the task instances are executed in parallel; - making available of the table of services produced for the updating of the configuration memory. - distributing of the receivers into two groups, with each group being dedicated to a task: - a first group of receivers is dedicated to a task of exploring a frequency band to be explored, a band of which the lower limit and the upper limit are known, an instance of an exploration task supplies a list of frequencies carrying services, the exploration tasks instances are synchronised via a first semaphore protecting a value of the next frequency to be explored, an exploration task instance stops if the value of the next frequency to be explored is greater than the upper limit of the frequency band to be explored; - a second group of receivers is dedicated to an analysis task of the frequencies of the list of frequencies carrying services, an analysis task instance supplies a table of services, the analysis task instances are synchronised via a second semaphore protecting an identifier of a next frequency to be analysed, an analysis task instance stops if the list of frequencies carrying services is empty and if the value of the next frequency to be explored is greater than the upper limit of the frequency band; - a first group of receivers is dedicated to a task of exploring a frequency band to be explored, a band of which the lower limit and the upper limit are known, an instance of an exploration task supplies a list of frequencies carrying services, the exploration tasks instances are synchronised via a first semaphore protecting a value of the next frequency to be explored, an exploration task instance stops if the value of the next frequency to be explored is greater than the upper limit of the frequency band to be explored; - a second group of receivers is dedicated to an analysis task of the frequencies of the list of frequencies carrying services, an analysis task instance supplies a table of services, the analysis task instances are synchronised via a second semaphore protecting an identifier of a next frequency to be analysed, an analysis task instance stops if the list of frequencies carrying services is empty and if the value of the next frequency to be explored is greater than the upper limit of the frequency band; - creating (1030, 1040) of task instances according to the distribution of the receivers, with each receiver distributed being associated with a task according to the group thereof, the task instances are executed in parallel; - making available of the table of services produced for the updating of the configuration memory.