| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a test of a high-performance GSM terminal 2 including a packet communication to be executed, only by adding a simple oscillator 29. <P>SOLUTION: Control data 7 and communication data 9 are prepared, a time-division synthesis is performed to the data according to a time slot, an oscillation frequency is switched between the first and second frequencies f<SB>1</SB>and f<SB>2</SB>by a single oscillator 23, the frequencies of the control data 7 and the communication data 9 to which the time-division synthesis is performed are respectively set to the first and second frequencies f<SB>1</SB>and f<SB>2</SB>to obtain a transmission signal 24. A dummy signal 30 having the first frequency f<SB>1</SB>from the second oscillator 29 is prepared, the transmission signal and the dummy signal are added to be transmitted to a GSM terminal 2 which is a test object as a down test signal 3b. Thus, the dummy signal 30 is prepared in another system independent from the preparation of the control data and the communication data, thereby actualing a price reduction of a circuit arrangement. <P>COPYRIGHT: (C)2007,JPO&INPIT |
