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Trace/Detector
reference is –25 dBm, then the destination trace is –15 dBm.
Example: If the first operand trace1 is at 60 dBuV, the second operand trace 2 is at 50 dBuV, and the
reference is 35 dBuV, then the destination trace is 45 dBuV.
See “More Information” on page 1324.
More Information
If a point in FirstTrace is equal to maxtracevalue, the resultant point is also maxtracevalue.
If a point in FirstTrace is equal to mintracevalue, the resultant point is also mintracevalue.
If neither of the above is true for a given point, then:
If that point in SecondTrace is equal to maxtracevalue, the resultant point is mintracevalue.
If that point in SecondTrace is equal to mintracevalue, the resultant point is maxtracevalue.
Off
Turns off Trace Math.
Key Path Trace/Detector, Math
Example :CALC:MATH TRACE1,LDIF,TRACE4,TRACE5,,–6.00
sets Trace 1 to
Log Diff trace math function, sets the First Trace operand (for
Trace 1) to Trace 4, sets the
Second Trace operand (for Trace 1) to Trace 5,
and sets the Log Difference reference for Trace 1 to –6 dBm.
Couplings Selecting a math mode other than Off for a trace (pressing the key or sending
the equivalent SCPI command) puts the trace in View (
Update On and
Display On)
, even if that math mode was already selected.
State Saved The Log Difference reference value for each trace is saved in Instrument State
Min Same as reference level
Max Same as reference level
Default Unit depends on the current selected Y axis unit
Initial S/W Revision Prior to A.02.00
Key Path
Trace/Detector, Math
Example CALC:MATH TRACE1 OFF turns off trace math for trace 1.
Notes See Trace “Math”.
State Saved The current trace math function is saved in Instrument State
Readback Off
Initial S/W Revision Prior to A.02.00