Keysight-Agilent 3400A

The 3400A True RMS Voltmeter covers the frequency range form 10Hz to 10MHz with voltage range of 1 mV to 300 V full scale (12 ranges). dB range is -72 to +52 dBm (0 dBm = 1 mW into 600-ohms). Meter accuracy is ?5% of full scale (10 to 50Hz), ?1% (50Hz to 1MHz), ?2% (1 to 2MHz), ?3% (2 to 3MHz), and ?5% (3 to 10MHz). Input impedance is 10 Mohms.

Keysight-Agilent 3400A datasheet & specifications