Instructions

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:
)1010log(10Trace
10)(Op210)(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:
)
1010log(10Trace
10)
(Op210)(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:
OffsetOp1Trace
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: