EXAMINATION MEASUREMENT INSTRUMENT AND TRIGGER METHOD

摘要

PROBLEM TO BE SOLVED: To provide a flexible examination measurement instrument and method whereby trigger can be generated for frequency and phase information.

SOLUTION: An examined radio frequency signal is received with an input terminal 110 of the examination measurement instrument 100, and the radio frequency signal is digitalized with an analog digital converter 108. A down-converter 115 generates I (in-phase) and Q (orthogonal phase) base band component information from the digitalized radio frequency signal. A power detector 145 obtains a power level by using the I and Q base band component information. A demodulator 145 generates a time domain trace for the I and Q bases when the power level obtained by the power detector exceeds a predetermined threshold value.

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