| 摘要 |
PROBLEM TO BE SOLVED: To monitor the power of a transmitter in a simple constitution by comparing an integrated output in each prescribed time with a detected output value, and outputting alarm when it is beyond a set value. SOLUTION: Output signals 1A, 1B, to 1N from each transmitter 1 which is set only for the necessary number of transmission is synthesized by a synthesizer 2, and distributed as a monitor signal 3C by a distributor 3 at a constant ratio for monitoring. This signal 3C is detected by a detector 4, obtained as a signal 4D, and inputted to an integrator 5. The integrator 5 integrates this input at each constant time interval and obtains an output signal 5E for monitoring. A comparator 6 compares the signal 5E from the integrator 5 with a reference signal, and when the integrated output is below the reference value, the comparator 6 judges that failure has been generated in any of the transmitter or synthesizer 2 and operates a power alarm processing. In this case, a controller 7a obtains the compared result, and monitors and controls power alarm communication or the like. |
