원래 이름 기록: UNIVERSAL SCIENTIFIC INDUSTRIAL ( SHANGHAI ) CO., LTD.

An operation voltage method and a communication are provided. The operation voltage detection method is configured to use a test apparatus or a test program to detect a plurality of operation voltages of a power amplification circuit in a device under test. The power amplification circuit includes a plurality of gain modes. Each of the gain modes includes a plurality of operation frequency bands. Each of the operation frequency bands includes a plurality of operation voltage intervals. The operation voltage detection method detects each test passing voltage of each of the plurality of operation voltage intervals of each of operation frequency bands of each of the gain modes.