Chapter 7 Transmission Operation
Setting up the trace
9102 Handheld Spectrum Analyzer Software version 5.31
129
Selecting the trace
mode
The 9102 has five different modes to display a trace:
– In actual mode, the 9102 shows a complete new measurement in
each trace. Subsequent traces are independent of each other.
– In hold mode, the last measurement is kept on the display;
measurements continue but are not displayed.
– In max hold mode, the 9102 takes new measurements and, for
each frequency point, compares the new measurement with the
previous result. If the new measurement value is higher than the
previous result, the new measurement value becomes the new
result value; otherwise the old result value is kept. This way, the
highest result since the start of the Max hold measurement (or a
parameter change) is kept and displayed.
– Similarly, in min hold mode, the 9102 takes new measurements
and compares the new measurement with the previous result. If the
new measurement value is lower than the previous result, the new
measurement value becomes the new result value; otherwise the
old result value is kept. This way, the lowest result since the start of
the Min hold measurement (or a parameter change) is kept and
displayed.
– In average mode, the new measurement and previous ones are
averaged for each frequency point displayed. The 9102 uses a
recursive algorithm for averaging.
To select whether you want to view an actual measurement, stop and
hold the last measurement, see the lowest or highest data for each
frequency or an average value, proceed as follows:
1 In the main menu, select
Trace.
2 Select the trace you want to modify (
Trace A or Trace B) using the
horizontal softkeys.
3 Select the trace mode with the vertical softkeys (
Actual, Hold, Max
hold, Min hold, Average
).
The trace mode is shown at the left-hand side of the vertical axis,
e.g. A (ACT).
NOTE
For fastest valid results it is advisable to briefly activate the actual
mode before selecting any other mode.
NOTE
When the trace is on hold, the measurement and failure counters
continue counting. A second trace, if active, continues updating.
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