[en] The input complex of SETS programs designed for work in the on- line system of processing images from track chambers is considered. The complex ensures receipt unpacking and normalizing data coming from the PSP-2 divice in a BESM-6 computer. The SETS complex enables to organize such mode of work when data exchange occurs not only with a M-6000 computer but also with a BESM-4 computer. The given complex is directed to the use of the DD-75 dispatcher. The relations between the processing time of a sheet and some image averaged parameters. It is established that for normal work of the SETS complex the necessary number of buffer sheets should by less than 16, the admissible range of scanning steps begins from the value of 54 μ. The above given values of averaged parameters are obtained, processing time of one sheet being 0,82s