| 摘要 |
A mass spectrometer, having an electron multiplier tube to serve as an ion detector, includes a voltage source for applying a suddenly rising voltage to the electron multiplier tube while no ions to be detected are being introduced and an inspecting apparatus for detecting the induced voltage generated in the electron multiplier tube when this suddenly rising voltage is applied. The condition of the wiring connections can be determined by analyzing the behavior of the measured induced voltage.
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