The 8662A Synthesized Signal Generator derives RF performance from an indirect frequency synthesis technique that results in frequency resolution of 0.1Hz from 10kHz to 640MHz and 0.2Hz from 640MHz to 1280MHz. Output is available from +13 to -139.9 dBm with output level accuracy held to 1 dB using microprocessor correction, making the 8662A an ideal generator for performing precise receiver sensitivity tests either manually or in automated systems via the HP-IB interface. Also offers versatile phase-locked AM/FM using either internal 400Hz and 1kHz rates or externally applied modulating signals, which can be either DC or AC coupled.