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Millivolt Meter

DAVM - 200

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True RMS A.C. Millivoltmeter, Model DAVM-200  is based on AD536. This is a completely monolithic integrated circuit which performs true rms-to-dc conversion of any waveform. The true rms value of a wave-form is more useful quantity than average rectified value, since it relate directly to the power of the signal. The crest factor compensation scheme of the AD536 allows measurement of highly complex signals with wide dynamic range.
Voltage Range : 0.2V, 2V, 20V& 200V
Frequency Range : 10Hz to 200KHz
Input Impedance : 1MW shunted by 25pf on all ranges.
Accuracy : ± 1% in the range 10Hz-100KHz
Display : 3½ digit, 7 segment LED (12.5mm height) with decimal and overflow indication.
Power Supply : 230V ± 10%, 50Hz
  • Measurement of low signal like microphone outputs e.g. in r.m.s. sound level monitoring.
  • Amplifier frequency response well beyond audio ranges.
  • RMS voltage measurements of modulated signals.
  • Power measurements with external standard resistance.



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