Agilent Technologies FieldFox N9913A User Manual

162 FieldFox User’s Guide
A memory trace is a live trace that has been stored in the FieldFox volatile
memory. It then becomes static, meaning it is not updated with measurements. It
can be displayed on the screen by itself, or with a data trace for comparison
purposes.
 In NA mode, memory traces are the same color as data traces, but muted
(duller).
 In CAT mode, the data trace is displayed in yellow and the memory trace is
displayed in blue.
How to display data and memory traces
 Press Trace 6.
 Then Data->Mem to store the current live trace into memory. A ‘beep’ sounds
to confirm the data trace has been saved to memory. There is no display
annotation that indicates that the memory trace has been stored.
o Press Data to view only the data trace.
o Press Memory to view only the memory trace.
o Press Data & Memory to view both the live trace and the stored memory
trace.
How to perform Trace Math
Trace math is performed between a live trace and a memory trace. When one of
the following math operations are selected, the yellow data trace displays the
current measurement with the selected trace math applied. The math operation
symbol indicated below in [brackets] is displayed on the lower left corner of the
screen.
 Press Trace 6.
 If not already stored, press Data->Mem to store the current live trace into
memory.
 Then Data Math.
 Then choose one of the following:
o Data + Memory [D+M] Current measurement data is added to the data in
memory.
o Data – Memory [D-M] Current measurement data is subtracted from the
data in memory.
o Data / Memory [D/M] Current measurement data is divided by the data in
memory.
o Math Off [Data] Displays trace data with NO math applied.
About Math Operations
Data / Memory and Data - Memory math operations are performed on complex
linear data before it is formatted. Because data is often viewed in log format, it is
not always clear which of the two math operations should be used. Remember:
dividing linear data is the same as subtracting logarithmic data. The following
illustrates, in general, when to use each operation.

Agilent Technologies FieldFox N9913A Specifications

General

Brand	Agilent Technologies
Model	FieldFox N9913A
Category	Measuring Instruments
Language	English