| 摘要 |
PURPOSE:To decide the optimum arrangement position of a master set by grasping sequentially quantitatively a reception electric field strength between the master set and each slave set. CONSTITUTION:A master set 200 and a slave set 300 are set to a 1st test mode to discriminate a slave set which is not available and a transmission section 3 is set to a prescribed talking channel and sends a carrier. The slave set 300 receives a test signal from the master set 200 and an electric field strength measurement section 107 measures the electric field and when the measured value is lower than a prescribed reference value, it is alarmed and informed to the user. Then the master set and the slave set are set to a 2nd test mode to discriminate the communication state and the test data is sent/received between the slave sets sequentially, and the master set obtains a 1st measurement of the received electric field strength from each slave set. The slave set obtains a 2nd measured value from the test data sent from the master set and sends it to the master set. A control section 2 of the master set discriminates the communication state with respect to each slave set to decide the optimum arrangement position. |
