Direct digital control complex (PU1, PU3)

Direct digital control complex is designed for operator to form telecontrol commands and to provide operator with the information about the controlled distant object’s condition. Direct digital control rack (SPU) and object interface block (BS) are the parts of PU complex. PU3 complex operates the work on three data link channels simultaneously, and PU1 complex on the one channel.

Technical characteristics
PU complex is meant:
- for serial circular condition polling of 40 units under test remote indication sensors, with the imaginary of every sensor’s on- and off-states with the help of indicating light;
- to specify 40 short or long button telecontrol commands;
- to specify 20 short or long standard button telecontrol commands;
- to specify 20 toggle telecontrol commands.