| 摘要 |
A multi-port switching apparatus (104) comprises a first port (204) and a second port (210) for coupling respectively to a device under test (300). The apparatus (104) also comprises an analyser port (108) for coupling to a signal analyser (102) and a switching unit (200) coupled to the first port (204), the second port (210) and the analyser port (108). The switching unit (200) is controllable so as to couple, when in use, the analyser port (108) to the first port (204) for a first duration. After the first duration, the analyser port (108) is coupled to the second port (210) substantially instead of the first port (204) for a second duration.
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