噪音計/聲級計校準(zhǔn)器 NC-72的詳細(xì)信息
麥克風(fēng)種類1, 1/2 or 1/4 inch校準(zhǔn)信號114 dB ± 0.2 dB (at 1 atmospheric pressure) Tolerance: ±0.15 dB±0.15dB頻率范圍250 Hz ± 1 %, Distorsion: < 3 %±20Hz電源IECLR06×2尺寸及重量Approx. 44 (L) X 62 (W) X 170 (D) mm Approx. 740 g 附件盒子一個；電池二節(jié)；1/2inch適配器NC-74-0021個英文介紹：1. Sound pressure level 114 dB at 250 Hz2. Standard sound source for laboratory studies3. High accuracy and stability4. Class 0L IEC 60942: 1988Specification Applicable standardsIEC942-1988 class0LApplicable microphone1, 1/2 or 1/4 inchNominal output sound pressure level114 dB ± 0.2 dB (at 1 atmospheric pressure) Tolerance: ±0.15 dBFrequency250 Hz ± 1 %, Distorsion: < 3 %Power requirementIEC R6 battery X 6 Battery life: LR6 (alkaline) approx. 13 hDimensions and weightApprox. 44 (L) X 62 (W) X 170 (D) mm Approx. 740 g (incl. batteries)
麥克風(fēng)種類1, 1/2 or 1/4 inch校準(zhǔn)信號114 dB ± 0.2 dB (at 1 atmospheric pressure) Tolerance: ±0.15 dB±0.15dB頻率范圍250 Hz ± 1 %, Distorsion: < 3 %±20Hz電源IECLR06×2尺寸及重量Approx. 44 (L) X 62 (W) X 170 (D) mm Approx. 740 g 附件盒子一個；電池二節(jié)；1/2inch適配器NC-74-0021個英文介紹：1. Sound pressure level 114 dB at 250 Hz2. Standard sound source for laboratory studies3. High accuracy and stability4. Class 0L IEC 60942: 1988Specification Applicable standardsIEC942-1988 class0LApplicable microphone1, 1/2 or 1/4 inchNominal output sound pressure level114 dB ± 0.2 dB (at 1 atmospheric pressure) Tolerance: ±0.15 dBFrequency250 Hz ± 1 %, Distorsion: < 3 %Power requirementIEC R6 battery X 6 Battery life: LR6 (alkaline) approx. 13 hDimensions and weightApprox. 44 (L) X 62 (W) X 170 (D) mm Approx. 740 g (incl. batteries)
