Features: Frequency range: 100 kHz to 990 MHz <35 ms frequency switching speed ±1 dB level accuracy Amplitude offset and phase adjust capabilities 150 millisecond frequency switching speed Versatile simultaneous modulation including DC FM Fully HP-IB programmable The Agilent 8656B provides frequency coverage from 0.1 to 990 MHz (with underrange to 10 kHz). This wide range covers the IF and LO frequencies as well as the RF frequencies of most receivers. It also allows testing in a variety of communication systems including the 800 MHz FM mobile band. Frequency resolution of 10 Hz allows convenient setting of increments including narrow channel spacings, while characterization of phase sensitive devices is made easier with the help of the phase increment/decrement feature. The Agilent 8656B provides precise output control. In addition, its modulation capabilities include simultaneous and mixed modulation modes from internal (400 Hz and 1 kHz tones) and external sources. These features create a versatile signal generator for use in a variety if applications.

Option	Description
001	High-stability timebase
002	Rear-panel connections
003	Pulse modulation (8657B only)