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The Keysight (formerly Agilent) 8656B is a programmable synthesized signal generator that combines performance, quality, and economy, covering the 0.1 to 990 MHz frequency range. Offering /-1 dB level accuracy and 0.1 dB resolution with calibrated output levels over the 13 to -127 dBm range, the Keysight (formerly 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.