Memory Trace Function

For each data trace displayed on the screen a so-called memory trace can be created. The memory trace is displayed in the same color as the main data trace, but its brightness is twice lower4.

The data trace shows the currently measured data and is continuously being updated as the measurement goes on.

The memory trace is a data trace saved into the memory. It is created from the current measurement when the user is clicking the corresponding softkey. After that, the two traces become displayed on the screen – the data trace and the memory trace. The user can customize the trace indication.

The trace status field will indicate the following:

      • D&M – data trace and memory trace are displayed;
      • M – only memory trace is displayed;
      • OFF – both traces are not displayed
      • Empty field – only data trace is displayed.

The memory trace bears the following features of the data trace (which if changed, will clear the memory):

      • frequency range,
      • number of points,
      • sweep type.

The memory trace has the following settings common with the data trace (which if changed, modifies the both traces):

      • format,
      • scale,
      • smoothing,
      • electrical delay.

The following data trace settings (if changed after the memory trace creation) do not influence the memory trace:

      • power in frequency sweep mode,
      • frequency in power sweep mode,
      • measured parameter (S-parameter),
      • IF bandwidth,
      • averaging,
      • calibration.

The memory trace can be used for math operations with the data trace. The resulting trace of such an operation will replace the data trace. The math operations with memory and data traces are performed in complex values.

The following four math operations are available:

Data / Memory Divides the measured data by the data in the memory trace.
Data * Memory Multiplies the measured data by the memory trace.
Data – Memory Subtracts a memory trace from the measured data.
Data + Memory Adds the measured data to the data in the memory trace.

Saving Trace into Memory

The memory trace function can be applied to the individual traces of the channel. Before you enable this function, first activate the trace.

To save a trace into the memory, use the following softkeys:

Trace Display Setting

To set the type of data to be displayed on the screen, use the following softkeys:

Mathematical Operations

To access math operations, use the following softkeys:
4. The color and brightness of the data and memory traces can be customized by the user (See section 8.6). ↩