The SG 504 provides a constant-amplitude sine wave over a frequency range from 245 MHz to 1050 MHz. Amplitude-reference sine waves of .05 MHz or 6.0 MHz (selected by internal switch) are provided. The output head has an output impedance of 50 ohms. The peak-to-peak voltage from the output head is adjusted by a calibrated five-turn potentiometer. The SG 504 Leveled Sine Wave Generator is designed for use in the TM 500 series power modules. The front-panel FREQUENCY MONITOR OUT connector provides at least a 0.3 V peak-to-peak signal at the selected output frequency (245 to 1050 MHz) for monitoring or external triggering. There is also a provision for frequency modulating the 245 to 1050 MHz output signal. When lit, the UNLEVELED light indicates a mismatched load or when the OUTPUT AMPLITUDE front-panel control should be turned counterclockwise. When the output head is disconnected from the front panel, the UNLEVELED light is also illuminated. Rear interface connections are provided for the FM INPUT, FREQUENCY MONITOR OUT, and amplitude control. If the rear interface is used, these front panel features must be disconnected. They cannot both be used at once.