M2174 M2177 交流電壓表/噪聲電平表
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| 高靈敏度 | 自動量程切換 | |
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| M2174 | M2177 | |
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 高靈敏度M 2174：10µV滿刻度 M2177：30µV滿刻度自動量程切換（M2177）聽覺矯正濾波器4種濾波器標準內置，通過追加最多可內置6種檢波方式 真實有效值檢波、平均值檢波、准尖頭值檢波可以切換背面裝有交流輸出/直流輸出端子裝有靈敏度調整器備有分貝(dB)線性刻度測試儀(選購件） |
| 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 ± DC peak value ± 250V 10µV to 10mV range : AC ± 5Vpeak, AC ± DC peak value ± 250V |
| Indication accuracy (average reponse, reference to F.S.) |
10µV range : 10Hz to 30kHz ± 10% (M 2174 only) 30µV range : 10Hz to 30kHz ± 5% 100µV range : 10Hz to 100kHz ± 5% 300µV to 100V range : 5Hz to 500kHz ± 10% |
| AC output | 1V (F.S., no load), output impedance : approx. 50Ω typ. |
| DC output | 1V (F.S., no load), output impedance : approx. 50Ω 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) |
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