RIGOL
Chapter 2 Functions of the Front Panel of GPSA
2-30
RSA3000E User Guide
Load the stored data to trace.
Trace data are cleared by the trace clear function.
When inactive trace is displayed, the trace will not be zoomed in or out based on
the setting of X-axis, but will move up and down based on the changes of Y-axis
values.
When the trace is shifted from inactive to active state, the trace is cleared, the
average timer is reset, and a new sweep is restarted.
Math Function
Trace math functions perform mathematical operations between traces
and, in some cases, user-defined offsets.
1.
Op1-Op2
Calculates the power difference between Operand 1 (Op1) and Operand 2 (Op2),
and saves it to the destination trace. During the sweep, the following formula is
executed for each point:
)
10
10log(10
Trace
10)
(Op2
10)
(Op1
result
−
=
(2-10)
In the above formula, the parameter unit is dB. If a point in Op1 is a maximum
trace value, the difference (the result of the subtraction) is also a maximum
trace value; if the difference is less than or equal to 0, the resultant point is the
minimum trace value.
2.
Op1+Op2
Calculates the power sum between Operand 1 (Op1) and Operand 2 (Op2), and
saves it to the destination trace. During the sweep, the following formula is
executed for each point:
)
10
10log(10
Trace
10)
(Op2
10)
(Op1
result
+
=
(2
-
11)
In the above formula, the parameter unit is dB. If a point in Op1 or Op2 is a
maximum trace value, the sum (the result of addition) is also a maximum trace
value.
3.
Op1+Offset
Calculates the sum between Operand 1 (Op1) and the offset, and saves it to the
destination trace. During the sweep, the following formula is executed for each
point:
Offset
Op1
Trace
result
+
=
(2-12)
In the above formula, the parameter unit is dB.
4.
Op1-Offset
Calculates the difference between Operand 1 (Op1) and the offset (Offset), and
saves it to the destination trace. During the sweep, the following formula is
executed for each point:
