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We are using E5052B to measure the output phase noise of a DDS module. At 300.01MHz output the measured Phase Noise at 10 KHz offset is -142dBc/Hz. However, when I configure the DDS module for 300MHz Output, phase noise will increase to -130dBc/Hz (12dB Difference). The only difference between these two tones is several near-carrier spurs (less
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About crosstalk or isolation. When performing a two-port calibration, the user has the option of omitting the part of the calibration that characterizes crosstalk or isolation. The definition of crosstalk is the signal leakage between test ports when no device is present. Crosstalk can be a problem with high-isolation devices (e.g., switch in open