NF AC Voltmeter/Noise Meter M2174/M2177
 
 

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High Sensitivity Auto-ranging
M2174 M2177
10£gVrms fullscale (M2174)
30£gVrms fullscale (M2177)


Automatic range selection (M2177)

Maximum six types of filters can be built-in (for auditory weighting and other functions)

Indication response : true rms response, average response and quasi peak response

AC and DC output

Sensitivity adjustment (useful in dB and SN ratio measurements)

dB linear scale (option)

Voltage measurement range M2174 : 10µV to 100Vrms/F.S.
M2177 : 30µV to 100Vrms/F.S.
Frequency range 5Hz to 500kHz
Input impedance approx. 1M ohm 20pF max.
Max. inuput voltage 30mV to 100V range : AC ¡Ó DC peak value ¡Ó 250V
10µV to 10mV range : AC ¡Ó 5Vpeak, AC ¡Ó DC peak value ¡Ó 250V
Indication accuracy
(average reponse, reference to F.S.)
10µV range : 10Hz to 30kHz ¡Ó 10% (M 2174 only)
30µV range : 10Hz to 30kHz ¡Ó 5%
100µV range : 10Hz to 100kHz ¡Ó 5%
300µV to 100V range : 5Hz to 500kHz ¡Ó 10%
AC output 1V (F.S., no load), output impedance : approx. 50£[ typ.
DC output 1V (F.S., no load), output impedance : approx. 50£[ typ.
Meter Taut-band with mirror type
Weighting network Built-in 4 types filter * :
JIS-A (JIS C 1502A), JIS-C (JIS C 1502C),DIN-45405 (AUDIO), CCIR-ARM
Possible to add another 2 filters as option
Power requirements AC100V, 120V, 230V, switchable
Dimensions (mm) 140(W) X 177(H) X 300(D)
Weight approx. 3.5kg
* : Characteristics of weighting filters (built-in)
JIS-A (JIS-C1502A)
JIS-C(JIS-C1502C)
DIN45405 (AUDIO) CCIR (ARM)