The 3403C True RMS Digital Voltmeter measures noise, multiplexed signals, modulated waves and signals with high harmonic content. Full range display of 10 mV (AC only), 100 mV, 1 V, 10 V, 100 V, and 1000 V. Functions include DC, AC, and AC + DC, 3 1/2-digit display. Frequency response from DC to 100MHz. Response times of 1 sec and 10 sec. Manufacturer's Standard Accessories Floating Adapter-Banana to BNC Manufacturer's Options Option 001 = Autoranging Option 003 = Remote Control + Digital Output + Autoranging Option 006 = dB Display