The Wiltron 6647B is a microprocessor controlled, .01-20 GHZ, sweep generator offering both broadband and narrow band sweeps, as well as discrete CW frequencies. Features Frequency range: 10 MHz - 20.0 GHz Frequency resolution: 1 MHz Frequency accuracy: ±10 MHz Output range: >+10 dBm to -20 dBm Level accuracy: ±1.0 dB Spurious signals: <-60 dBc External AM, FM, phase, pulse modulation inputs N(f) Connector GPIB (IEEE-488) interface