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Key Path
Related Functions
Remote
Commands
Function Reference
Log Math F=C–D
Log Math F=C
–
Subtracts Trace D from Trace C point by point, then stores the results in Trace
F in logarithmic units. If Trace C is in View On mode, this function is continu-
ous and occurs every sweep. Results of the subtraction are referenced to 0 dB.
This often requires a reference level adjustment. For example, if the reference
level is set at –40 dBm, Trace D is at –50 dBm, and Trace C is at
–55 dBm, the F=C–D function places Trace F at –5 dB. Because this is off
screen, the reference level will need to be adjusted.
Traces > Trace Math OFF > Default Math Trace F > Log Math F=C–D
Log Math C=A–B, Log Math C=A+B
CALCulate6:MATH:EXPRession(TRC/TRD)
3-36
D
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