Ceyear 4051 Series, User Manual

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4. Operating Instruction
4.2 Advanced operation guide
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Step 6. Adjust the output frequency of the signal generator by 100kHz step: the observable center
frequency of the Series Signal Analyzer also changes by the stepped frequency of 100kHz, where the step
signal is always in the center of the screen display. As shown in Fig. 4.38.
Fig. 4.38 Measurement of drift signal by signal tracking
4.2.8 Improvement of amplitude measurement accuracy by amplitude correction function
4.2.8.1 Definition of amplitude correction
The amplitude correction function aims to improve the accuracy of amplitude measurement. Due to many
factors including the losses of adapter and cables, the flatness of the system is often impacted. Therefore, the
amplitude correction is used for the unified disposal for the system, so as to eliminate the influence on the
measurement results. Run the amplitude correction function after the paired frequency/amplitude correction
data are input into the Series Signal Analyzer, and the analyzer will conduct the real-time correction for the
measurement results via the revised data. The amplitude correction functions of 4051 Series Signal/Spectrum
Analyzer include: user correction, antenna gain correction and cable correction, and the user can select the
correction menu in need.
4.2.8.2 Available functions of Series Signal Analyzer
The Section will describe the function of amplitude correction where the application method of input and
editing functions regarding the amplitude correction data is given for the convenience of inputting the
frequency and amplitude correction data pair. A pair of data can be stored and reused once input.
4.2.8.3 Measuring steps for amplitude correction
The amplitude correction function is used to measure and calibrate the flatness changes of the system.
Providing that the Series Signal Analyzer is applied for the measurement of one device, and the output signal
frequency ranges from 1GHz to 3GHz. It is necessary to use cables and connector to connect the device and
the analyzer. So the amplitude correction function can correct the measuring errors arising from the losses of