The 400EL AC Voltmeter is a versatile meter which can also be used as an AC/DC converter and a wide-band amplifier. This is a compact, solid-state unit with log voltage scales from 1 mV to 300 V in 12 ranges.
Frequency response from 10Hz to 10MHz. The AC amplifier offers an output of 150 mV rms for full scale indication and the AC/DC converter provides an output of 1 VDC for full scale indication. For take-anywhere operation, external battery operation is also provided.