SPA-900 Series User Manual 38
2.2.2 Trace
The sweep signal is displayed as a trace on the screen.
2.2.2.1
Select Trace
Spectrum Analyzer allows for up to four traces to be displayed at the same time. Each trace has its
own color (Trace 1 - Yellow, Trace 2 - Purple, Trace 3 - Light blue and Trace 4 - Green). All traces
can be set parameter independently. As a default, spectrum analyzer will choose Trace A and set
the type of the trace as Clear Write
2.2.2.2
Trace Type
Set the type of the current trace or disable it. The system calculates the sampled data using a
specific operation method according to the trace type selected and displays the result. Trace types
include Clear Write, Max Hold, Min Hold, View, Average and Bank. The corresponding icon of the
trace type will be displayed in the status bar at the left of the screen. Take Trace 1,2,3,4 as an
example and the icons are as shown in the figure below.
Figure 2-5 Trace Type
1. Clear Write
Erases any data previously stored in the selected trace, and display the data sampled in real-time
of each point on the trace.
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