| 摘要 |
PURPOSE:To test the effect of fluctuation of attenuation with time quickly and accurately, by providing a simulated attenuator in which the attenuation can be changed as time elapses, and simulating an actual radio communication system. CONSTITUTION:Simulated transmitters 6, 13 and simulated receiver 8, 13 are mutually connected via a simulated attenuator 12 controlled with a controller 11. The controller 11 inputs the attenuation and timing change the same as those taken place naturally through a program, allowing to change the attenuation of the simulated attenuator 12 timewise according to the specification of the program. Thus, since the simulated receivers 8, 14 can receive and reproduce signals of the level in response to the attenuation, the reception performance of the receivers 8 and 14 can quickly be tested. |
