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3. Power（A+B）: Calculating the power sum of operands A and B and stored it the target trace. During
the sweep, the following calculation is performed for each point:
A/10
Trace=10log（10
+10
In the above formula, the parameter unit is the decibel value of logarithmic power. If the value of A or B
point is the maximum trace value, then the sum result is also the maximum trace value.
4. Log （A-B+Offset） : With the logarithmic difference function, the operand A is subtracted the operand B
and add the offset, and then store the result in the target trace. During the sweep, the following
calculation is performed for each point:
Trace=A-B+offset
In the above formula, the unit of trace data is dBm.
5. Log（A+Offset）: calculating the sum of operand A and offset and store the result in the target trace.
During the sweep, the following calculation is performed for each point:
Trace=A+offset
In the above formula, the unit of trace data is dBm.
Note
Trace arithmetic functions are mutually exclusive, when an arithmetic function is applied to a trace, it will
turn off the last selected arithmetic function.
Operand A: Set operation trace 1 in the operation function. Trace 1, trace 2, trace 3, trace 4, trace 5 and
trace 6 are available for selection.
Operand B: Set operation trace 2 in the operation function. Trace 1, trace 2, trace 3, trace 4, trace 5 and
trace 6 are available for selection.
Offset: Set logarithmic offset in the operation function, unit is dB. User can change the offset by using
the numeric key, rotary knobs, direction key or touch panel menu.
Marker
Press [Marker] key to access marker menu to select type and amount of marker. Marker is a
rhombic icon, as shown in the Figure 4-1.
）.
B/10
4-1
Figure
Reading of Marker Cursor
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