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AC Micro Milli Volt Meter-401
Systronics AC Mcro/Milli Volt Meter 401 is a solid state precision instrument, measurng AC Voltages from 10µV to 500 V r.m.s. over a frequency range of 1Hz to 3MHz. Designed for easy operation, the instrument gives direct reading of voltage or dB on diital display.
The unit uses a stable, high gain AC amplifier, which delivers essentially, a hum free, low noise micro phony signal output. Operated on mains, this test instrument is sturdily constructed and is enclosed in an elegan metallic cabinet with a pair of rugged, plastic moulded, dual position stands.
Technical Specfications
Range
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Voltage: 2 mV to 2000 V Full Scale in
7 Decadc Range, (Max. 500 V)
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dB: 60 dB to + 60 dB in steps of 20 dB
(Reference: 0 dB corresponds to 1 mW across 600Ω) |
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Measuring Rane
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Voltage: 10 µV to 500 V
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dB: 95 dB to + 56 dB
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Measurement Accuracy
(AT 1KHz)
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Voltage Scale: +- 1% of Full Sclae +- 1 diit
dB Sclae: +- 0.5 dB
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Frequency Response
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(At 0.0 dB; 0.775 V)
+- 0.5 dB from 4 Hz to 1 MHz &
+- 3.0 dB from 1 Hz to 3 MHz
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Display
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Seven segment LED; 3.1/2 Digit
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Input mpedance
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For 2 mV & 20 mV Ranges: 5 MΩ // 50 pF (Approx.)
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Above 20 mV ranges: 5 MΩ // 20 pF (Approx.)
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Input Noise
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For 2 mV Range: 5 µV + 5 Least Counts
20 mV & Above: 5 Least Counts
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Amplifier
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The output is phase inverted, undistorted replica of input in
mV correspondin to displayed figure irrespective of range
with maximum 200 mV at full scale
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Maximum Safe Input
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For 2 mV & 20 mV Range: 250 V DC + 100 V AC
upto 20 KHz
Above 20 mV Range: 750 V peak AC + DC
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Power Supply
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230 V, 50 Hz +- 10%
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Dimension
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65 x 215 x 210 mm
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Weight
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@ 1.75 Kg.
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