The 3400A True RMS Voltmeter covers the frequency range from 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.
Option included: Option 001 = Expands the dB scale by placing it on the top of the meter
Agilent / HP 3400A