Keysight Technologies N9321C User Manual page 179

Key Reference
Trace/Det
A+B-> C
Turn this softkey on to calculate variable A plus variable
B. The result will display as variable C when all the variables is set
to on. This function and A-B->C can not be set to on
simultaneously.
Math By
This softkey toggles the caculation type between power
and logarithmic power. When it is set to power, the variable A and
B will be calculated in power and the result variable C will display
in converted logarithmic power. When it is set to log power, the
variable A and B will be calculated in lograithmic power and the
result variable C will display in logarithmic power.
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