Agilent/HP / VSA Series Transmitter Tester / E4406A RF input 7 to 314 MHz and 329 MHz to 4 GHz Baseband IQ inputs 5 Hz to 5 MHz(Baseband I or Q inputs) 10 Hz to 10 MHz(Composite I/Q) Frequency resolution 1 Hz Maximum measurement power +30 dBm (1W)