Patent ID: 7761253
Filing Date: 2010-07-20
Classification: G01R

Abstract:
1. An error factor measurement device that, in a signal system comprising a first signal generator that includes a first signal source that generates a first signal, and a first output terminal that outputs the first signal; a second signal generator that includes a second signal source that generates a second signal, and a second output terminal that outputs the second signal; and a connection tool that connects the first output terminal and the second output terminal with each other, measures an error factor in the second signal generator based on a measurement result of the first signal and a measurement result of the second signal, the device comprising: a connection tool characteristic measurer that measures a characteristic of the connection tool based on the measurement result of the first signal and the measurement result of the second signal; a reflection-to-output ratio measurer that measures a ratio relating to a measurement result after the first signal is reflected inside the second signal generator and a measurement result before the first signal is reflected by the first output terminal, and a ratio relating to a measurement result after the second signal is reflected inside the first signal generator and a measurement result before the second signal is reflected by the second output terminal; an error factor recorder that records respective components of an error factor caused by frequency tracking of the first signal generator, and a product of respective components of an error factor caused by frequency tracking of the second signal generator; and an error factor deriver that derives the respective components of the error factor caused by the frequency tracking of the second signal generator based on the measurement result of the characteristic of the connection tool, the measurement result by the reflection-to-output ratio measurer, and the recorded content of the error factor recorder.