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Comparing Traces/Performing Data Math
• Overview
• Performing Data Math Operations
Other topics about Data Analysis
Overview
Each of the traces for which measured data is displayed is provided with an
additional trace, called a memory trace, that temporarily stores measured
data. You can use the memory trace to compare traces on the screen or to
perform complex data math between the memory trace and measured
data.
The following data math operations are available:
Value Description
Data /
Memory
Divides the measured data by the data in the memory trace.
This function can be used to evaluate the ratio of two traces
(e.g., evaluating gain or attenuation).
Data *
Memory
Multiplies the measured data by a memory trace.
Data -
Memory
Subtracts a memory trace from the measured data. This
function can be used, for example, to subtract a vector error
that has been measured and stored (e.g., directivity) from
data subsequently measured on a device.
Data +
Memory
Adds the measured data and the data in the memory trace.
Performing Data Math Operations
1. Press Channel Next/Channel Prev keys and Trace Next/Trace Prev keys
to activate the trace to be stored in memory.
2. Press Display key.
3. Press Data -> Mem to store the measured data in memory.
4. Press Data Math.
5. Select the data math operation to perform.
6. Press Display.
7. Select the type of data to display on the screen.
8. Send the trigger to make measurements.
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