Keysight-Agilent 3406A

The 3406A RF Voltmeter has an extremely wide 10kHz to 1.2GHz bandwidth with high impedance. Signals as small as 50 ?V can be resolved on the Voltmeter's linear scale. Full Scale sensitivity from 1 mV to 3 V is selected in eight 10 dB steps and may be read directly from -62 dBm to +23 dBm for power measurements. Full scale accuracy is within 3% over the greatest part of the band, and within 5 to 13% from 10kHz to 100kHz and 100MHz to 1.2GHz. Maximum input is ? 100 V DC, 30 V peak to peak and meter response time is < 3 S. Other features include a DC recorder output, sample hold output for connection to scopes (>200 kohms load with < 1000 pF output is 0.316 V full scale), and peak or true RMS voltmeters if other absolute average measurements are required.