| 品牌 | 日本理音 | 型號(hào) | NC-74 |
| 類(lèi)型 | 聲級(jí)計(jì)校準(zhǔn)器 |
| 適用標(biāo)準(zhǔn) | JEC60942 cl1 JISC1515 cl 1 | |
| 校準(zhǔn)噪音計(jì) 麥克風(fēng)種類(lèi) | 1inch | IEC61094-1Te LS1P、 UC-27、UC-25、UC-34 |
| 1/2inch | IEC61094-1Te LS2aP、UC-57、UC-53A、 UC-52、UC-26、UC-30、UC-31、UC-3 | |
| 校準(zhǔn)信號(hào) | 94dB | |
| &plun;0.3dB | ||
| 頻率范圍 | 1KHz | |
| &plun;20Hz | ||
| 電源 | IECLR06×2 | |
| 尺寸及重量 | 49（H）×80（W）×74（D） 約200克 | |
| 附件 | 盒子一個(gè)；電池二節(jié)；1/2inch適配器NC-74-0021個(gè) | |
英文介紹：
•Compact dimensions and light weight
•Two alkaline batteries (IEC LR6) will power the unit for over 30 hours continuous use.
•No need for atmospheric pressure compensation.
| < Specification > | |
| Applicable standards | IEC 60942-1997 Cl1 |
| Applicable microphone | 1 or 1/2 inch |
| Nominal output sound pressure level | 94 dB &plun; 0.3dB |
| Frequency | 1000Hz |
| Power requirement | IEC LR6 (size AA) battery X 6 |
| Dimensions and weight | 8 X 7.4 X 4.9 cm Approx. 200 g (incl. batteries) |
