156 Chapter 2
Front-Panel Key Reference
MEASURE
Burst Power Measures the average power in zero-span mode for the captured burst.
This measurement is primarily for use with time domain modulated
signals (Bluetooth™, GSM/Edge, and NADC). The burst width, if not
user defined, is determined by finding the peak in the captured data,
then searching for the first place that the trace is higher than the
threshold level. This is considered to be the start of the burst. The stop
of the burst is the first position in the trace that falls below the
threshold level. The mean carrier power is calculated based on the
burst width and the threshold level. Refer to Figure 2-7 for clarification
of these parameters.
Figure 2-7 Burst Power Measurement
The burst power measurement acquired data from the “Measured Area”
above when a radio standard is chosen or when
Meas Setup, Meas
Method
, Measured Burst Width is selected. When Meas Setup, Meas
Method
, Above Threshold Lvl is selected, the “Measured Area” extends
the burst width delimiter lines to the start and stop points.
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