| 摘要 |
PURPOSE:To obtain a cheap apparatus for measuring CN ratio. CONSTITUTION:The CN ratio measuring apparatus comprises a measuring band designating section 3, a display section 4 producing a spectral display of measuring level within a designated band, first and second noise measuring frequency designating sections 6, 7, a transmission channel selecting section 5, and a CN ratio operating section 8 for predicting noise level of carrier in a selected transmission channel and operating a CN ratio. |
