The Advantest R3561L CDMA Test Source covers 50MHz to 2GHz frequency range, 1Hz resolution. The R3561L can be used to test base & mobile station for both cellular & PCS CDMA systems. The R3561L is used in combination with the R3465 / R3463 series modulation spectrum analyzers, CDMA test source control option (09) is necessary for the R3465 / R3463 , The R3561L outputs a modulated signal conforming to IS-95 to test the receiver characteristics of the base station.