50
/
78
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:
Trace=10log
（
10
A/10
+10
B/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.
Figure
4-1
Reading of Marker Cursor
