The 8660C Synthesized Signal Generator mainframe utilizes a wide range of available plug-ins to make up a complete Signal Generator System (plug-ins sold separately). Offers direct keyboard entry of CW frequencies. Increased performance capabilities over the 8660A including digital sweep, frequency stepping, control of frequency with a tuning knob, and a ten-digit numerical display. Auto, Single, or manual digital sweep with selectable speeds of 0.1, 1, or 50 seconds. Features Direct keyboard entry of CW output frequencies 10kHz to 2600MHz (plug-in dependent, sold separately) Synthesizer stability and accuracy 1Hz resolution (2Hz above 1300MHz) Calibrated output over >140 dB range AM, FM, FM, or Pulse Modulation Fully TTL programmable