The model TVT-321 is a single band Millvolt Meter for measuring AC voltage from 300uV to 100V in 12 ranges with bandwidth of 10Hz to 1MHz. Each range shares 10dB. The effective sensitivity at 300uV range is 30uV. This voltmeter is equipped with three scales for easy visual distinction, namely Volt. dB and dBm. As the result of employing high impedance buffer in the inner circuit of this instrument, the input impedance is 10M!
