Ceyear 4041 Series, User Manual

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Chapter IV Spectrum Analyzer Mode
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Chapter IV Spectrum Analyzer Mode
This chapter mainly introduces relevant information of the Spectrum Analyzer mode of 4024 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 Analyzer mode after reading this section and get familiar with the operation of this mode.
All the operations in this chapter are based on the condition that the Spectrum
Analyzer mode has been selected and will no longer be described separately
hereinafter.
Since the 4041 series Spectrum Analyzer mode has many measurement functions, it contains various complex
parameters, such as frequency parameter, amplitude parameter, average bandwidth parameter, trace parameter,
scan parameter and marker parameter and other the most basic function parameters. In addition, it contains many
other special function parameters, including signal tracking, noise marker, peak tracking, counter, List sweep,
trigger, limit line, field strength measurement, channel power, occupied bandwidth, adjacent channel power,
carrier-to-noise ratio, emission mask, IQ capture, tune&listen, etc.
Signal track
If the measured signal is a drift signal, the signal tracking function of spectrum analyzer is enabled and the
activated marker is placed on the signal peak the marker peak will always be displayed at the center frequency of
spectrum analyzer, which is convenient for measurement.
Noise marker
The noise marker displays the noise power that normalizes the noise to 1 Hz bandwidth near the activated marker.
With the noise marker enabled and the detector set to sampling detection mode, if the amplitude adopts
logarithmic scale, the unit of marker reading will switch to dBm (1 Hz) or dB/Hz automatically, and if the
amplitude adopts linear scale, the unit of marker reading will switch to V (1 Hz) or % automatically.
Peak track
When the peak tracking function is enabled, the marker will perform peak search once at the end of each scan.
Counter
When the frequency counter function is enabled, it will make the marker reading more accurate, which is
beneficial to improve the accuracy of frequency measurement. The measurement accuracy can reach Hz level,
with an error of ±10 Hz.
List sweep
The List sweep function enables the user to edit the scan frequency band, and the spectrum analyzer scans by the
set frequency range and other parameters based on the edited list.
Trigger
Select the trigger mode of scan or measurement, which includes [Free Run], [Video], [External], [Slope] and
[Delay]. The user can select proper mode according to different requirements. A new scan or measurement will be
initiated if the trigger mode is set to free trigger after last continuous scan or single scan. Set the trigger mode to
CAUTION