SUPERVISORY EQUIPMENT OF TIME DIVISION MULTIPLE ACCESS RADIO COMMUNICATION SYSTEM
PURPOSE:To measure a transmission frequency and power of each slave station at a master station by providing a means generating an extraction signal in the burst timing of a designated slave station and a means supervising a reception frequency and power in synchronizing with the extracted signal to...
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Sprache: | eng |
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Zusammenfassung: | PURPOSE:To measure a transmission frequency and power of each slave station at a master station by providing a means generating an extraction signal in the burst timing of a designated slave station and a means supervising a reception frequency and power in synchronizing with the extracted signal to the master station respectively. CONSTITUTION:A frequency measuring circuit 3 and a power measurng circuit 4 are connected to the master station 1 arranged for slave stations 21-2n. The extracted signal in synchronizing with the burst timing of a designated slave station by a TDMA circuit is transmitted from the frequency measuring circuit 3. Moreover, a sample and hold circuit 8 holds an output of an LPF7 from the extracted signal and a DC output corresponding to the transmission frequency of the designated slave station is obtained from the output. On the other hand, the power measuring circuit 4 detects 13 the amplitude of the reception signal and supplies it to the sampled and hold circuit 8 controlled by the extracted signal. This output is compared with a reference voltage to supervise the transmission power. Thus, the transmission frequency and power of each slave station are measured remotely. |
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