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TPA3137D2 規格書中Gain測試 & SNR 測試疑問

Other Parts Discussed in Thread: TPA3137D2

在TPA3137D2的規格書中第六頁,顯示的Gain和SNR如下圖

這兩項參數應該如何測試?是否符合規格書定義呢?

應該需要什麼樣的設備才可進行該兩項參數的測試?