Memory Math Functions; Setting Display Intensity - Agilent Technologies 8719D User Manual

Memory Math Functions

Two trace math operations are implemented:
(Note that normalization is :NA%@lNN not &W-NNN .) Memory traces are saved and recalled
and trace math is done immediately after error-correction. This means that any data processing
done after error-correction, including parameter conversion, time domain transformation
(Option OlO), scaling, etc, can be performed on the memory trace. You can also use trace math
as a simple means of error-correction, although that is not its main purpose.
All data processing operations that occur after trace math, except smoothing and gating, are
identical for the data trace and the memory trace. If smoothing or gating is on when a memory
trace is saved, this state is maintained regardless of the data trace smoothing or gating status
If a memory trace is saved with gating or smoothing on, these features can be turned on or off
in the memory-only display mode.
The actual memory for storing a memory trace is allocated only as needed. The memory trace
is cleared on instrument preset, power on, or instrument state recall.
If sweep mode or sweep range is different between the data and memory traces, trace math is
allowed, and no warning message is displayed. If the number of points in the two traces is
different, the memory trace is not displayed nor resealed. However, if the number of points for
the data trace is changed back to the number of points in the memory, the memory trace can
then be displayed.
If trace math or display memory is requested and no memory trace exists, the message
CAUTION: NO VALID MENORY TRACE is displayed.

Setting Display Intensity

the &) QD keys, or use the numerical keypad to set the intensity value between 50 and 100
percent. Lowering the intensity may prolong the life of the LCD.
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Application and Operation Concepts 6 4 7