| 摘要 |
PURPOSE:To attain each kind of test without especially preparing a testing device by providing a means which branches the output of a transmitting part, and connects it with a receiving part, and providing a means which measures the output signal level of the transmitting part detected through the means which connects the output of the transmitting part. CONSTITUTION:This device is equipped with a distributing and synthesizing part 20 which branches the output of a transmitting part 1, and connects it with a receiving part 2 by a control, and a level measuring circuit 14 which measures the output signal level of the transmitting part 1 detected through the distributing and synthesizing part 20. And also, the device is equipped with a distortion detecting circuit 9 which detects the distortion of a radio signal, and the distortion is reduced by a signal adding circuit 4 based on the detection signal. And also, at the time of adapting the device as the base station of a mobile communication, the device is equipped with a test signal transmitting part 17 which applies a test signal according to a call processing protocol to the input of the transmitting part 1, and a control part 18 with a testing function which fetches the test signal transmitted through the distributing and synthesizing part 20 to the output of the receiving part 2, executes the pseudo execution of the call processing of a mobile station, and judges the validity of the operation of the call processing. |
