| 摘要 |
PURPOSE:To shorten the time needed for tests of the receiving operation and the receiving sensitivity of a radio transmitter having plural frequency channels and to perform an evaluation test with a small measurement error. CONSTITUTION:The special codes are received from a transmitter device to show the frequency switching information and the frequency channel number information on the switching destination. There special codes are stored in a received data memory 3. Then the contents of a special code memory 4 storing previously the special code of the present station are read out and compared with each other. When the coincidence is confirmed, a control signal which switches the frequency channel to the designated one is given to a frequency switch 5 from a control part 6. Thus the reception frequency channel of a receiving part 1 is switched. |
