Ceyear 4051 Series, User Manual

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4. Operating Instruction
4.2 Advanced operation guide
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Step 12. Modify the X-axis scale to 1 dB to optimize special measurement:
 Press [Span/X-Axis], [Scale/Div].
Set the X-axis scale to 1 dB, as shown in Fig. 4.73.
Fig. 4.73 Modify the X-axis Scale
4.2.14 Burst Power
4.2.14.1 Basic concept
Burst power is an accurate method to measure specific burst average power. It is the average power of the
pulse captured by measurement under zero bandwidth. The measurement is mainly used to measure the pulse
modulated signal and burst signal in the time domain. If there is no user-defined, pulse width can be obtained
in this way: identify peaks in the captured data, and then find the first position above the threshold on the trace
as the starting point of the pulse, while the terminal point of the pulse is the first point below the threshold on
the trace. The average carrier power can be calculated by pulse width and threshold.
4.2.14.2 Measurement Example
This section mainly describes how to carry out burst power measurement of a pulse modulated signal of 1.0
GHz frequency.
Step 1. Set signal source as below:
 Set up a pulse modulated signal.
 Set frequency on signal source to 1.960GHz.
 Set up the period of pulse modulation signal as 100 us.
 Set signal amplitude to -10dBm.
Step 2. Connect the radio frequency output port of the signal source to that of the analyzer. As shown in
Fig. 4.74: