| 摘要 |
PURPOSE:To specify a channel economically at the test of a mobile radio set, by executing the channel specification at the time of the test by dialing a telephone set. CONSTITUTION:When a channel to be used for the test is specified by depressing dialing keys on a telephone set 1 manually through the operating part 1-1 of the telephone set 1, a channel specifying signal is sent to an operation processing part 2-1 in the body 2 of the mobile ratio unit. Receiving said signal, the operation processing part 2-1 presets a programmable divider in a frequency synthesizer 2-2 and starts to program in accordance with the channel specifying signal. Consequently, a transmitting part 2-3 and a receiving part 2-4 receive the local oscillation frequency of the specified channel from the synthesizer 2-2 to transmit/receive signals at the specified channel. The operation processing part 2-1 returns signals such as the field information of the channel sent from the transmitting and receiving parts and the signal of the specified channel number to the operation processing part 1-2 and the operation processing part 1-2 processes the returned signal and sends the result to the operating part 1-1. |
