| 摘要 |
<p>PURPOSE:To generate a desired frame by the same circuit by constituting the frame by burst and dividing the frame for generating the different frame so as to switch a mode at the time of multiplexing data. CONSTITUTION:A transmission address counter 12 counts up from an initial value which is set in CPU with a frame pulse generated in a transmission frame pulse generation circuit 11 as a reference. An address decoder 14 generates a control signal required for constituting the frame by decoding (comparing) the output of the transmission address counter 12 by a value which can be set and changed by CPU 13. A data multiplex circuit 17 adds a synchronous word and overhead, which are generated from a synchronous word generation circuit 15 and an overhead generation circuit 16, by the control signal of the address decoder 14, generates data of frame constitution and transmits it to a satellite as the transmission frame through a transmission circuit 18.</p> |
