Transmission system and control method of same

A transmission system comprising:

• a plurality of active transmitters;
• a backup transmitter comprising a plurality of setting tables corresponding to the plurality of active transmitters each of which stores a setting value relating to a frequency and a level of a signal outputted from the active transmitter, a power amplifier to amplify an input signal and output an amplified signal, and a modulator/exciter which, based on the setting table corresponding to the active transmitter to be switched to the backup transmitter, converts the input signal into a modulation signal of a prescribed broadcast type in which nonlinear distortion by the power amplifier has been compensated;
• and
• a system controller which integrally controls the plurality of active transmitters and the backup transmitter, and at the time of adjusting the output level of any of the plurality of active transmitters, performs control of the backup transmitter so that content of the setting table corresponding to the active transmitter whose output level was adjusted becomes a setting value corresponding to the output level adjusted.

In a control method of a transmission system having an active transmitter, a backup transmitter provided with a power amplifier and a modulator/exciter, and a system controller which integrally controls the active transmitter and the backup transmitter, the control method of a transmission system comprising:

• storing, by the backup transmitter, a setting value relating to a frequency and a level of a signal outputted from the active transmitter in a setting table, which is used when an input signal is converted into a modulation signal of a prescribed broadcast type in which nonlinear distortion by the power amplifier has been compensated;
• performing control of the backup transmitter by the system controller so that, at the time of adjusting the output level of the active transmitter, content of the setting table becomes a setting value corresponding to the output level adjusted;
• and
• changing and storing by the backup transmitter so that, in accordance with the control of the system controller, the content of the setting table becomes the setting value corresponding to the output level adjusted.

In a control method of a transmission system having a plurality of active transmitters, a backup transmitter provided with a power amplifier and a modulator/exciter, and a system controller which integrally controls the plurality of active transmitters and the backup transmitter, the control method of a transmission system comprising:

• storing, by the backup transmitter, a setting value relating to a frequency and a level of a signal outputted from each of the plurality of active transmitters in each of a plurality of setting tables corresponding to the plurality of active transmitters, which is used when an input signal is converted into a modulation signal of a prescribed broadcast type in which nonlinear distortion by the power amplifier has been compensated;
• performing control of the backup transmitter by the system controller so that at the time of adjusting the output level of any of the plurality of active transmitters, content of the setting table corresponding to the active transmitter whose output level is to be adjusted becomes a setting value corresponding to the output level adjusted;
• and
• changing and storing by the backup transmitter so that, in accordance with the control of the system controller, the content of the setting table corresponding to the active transmitter whose output level was adjusted becomes the setting value corresponding to the output level adjusted.