The 8642A Synthesized Signal Generator is a high performance, programmable generator for use in demanding RF measurements. Frequency range: 100kHz to 1057.5MHz 1Hz frequency resolution Output level: +15 dBm to -140 dBm High accuracy attenuator and output level Non-harmonic spurious below -100 dBc (to 1GHz) Low SSB phase noise of -134 dBc/Hz at 1GHz (20kHz offsets) Provides AM, FM, Pulse and Phase modulatio