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Chapter IV Spectrum Analysis Mode
This chapter mainly introduces relevant information of the spectrum analysis mode of S3302 series spectrum
analyzer, including some typical measurement functions and methods, so that the user that operates this instrument
for the first time can have a general knowledge on some typical applications and test operations of the spectrum
analysis mode after reading this section and get familiar with the operation of this mode.
All operations in this chapter are based on the spectrum analysis mode and not separately described below.
Due to rich measurement functions, the spectrum analysis mode of S3302 series includes a number of complex
parameters. In addition to basic functional parameters such as the frequency, amplitude, bandwidth average, trace,
sweeping and marker parameters, it also includes characteristic functional parameters such as the signal track,
noise marker, peak track, counter, list scanner, trigger, limit, field strength measurement, channel power, occupied
bandwidth, adjacent channel power, C/N, emission mask, IQ capture, audio monitor, etc.
 Signal Track
If the drift signal is tested, the active marker should be placed onto the peak point of the signal by the signal
tracking function of the spectrum analyzer. In this case, the marker peak will always be displayed at the center
frequency of the spectrum analyzer, thus facilitating measurement.
 Noise marker
The noise marker displays the noise power at which noise near the active marker is normalized to the 1Hz
bandwidth. When the noise marker is enabled, the detector is set into the “Sample” mode, and the amplitude scale
is set as “Log”, the marker reading unit will automatically change into dBm(1Hz) or dB/Hz. When the amplitude
scale is set as “Linear”, the marker reading unit will automatically change into V(1Hz) or %.
 Peak Track
When the peak tracking function is enabled, the peak will be searched once by the marker after each sweeping.
 Counter
When the frequency counter function is enabled, the marker reading will be made more accurate, which can help to
improve the accuracy of frequency measurement. The measurement accuracy is Class Hz, and the error within
10Hz.