3 Spectrum Analyzer Mode
3.4 Occupied BW Measurement
Note that putting a trace into Display=OFF and/or Update=OFF does not restart the
sweep and does not restart Averaging or Hold functions for any traces.
3.4.10.3 Math
Lets you turn on and configure Trace Math functions.
Math Function
Trace Math functions perform mathematical operations between traces and, in
some cases, user-specified offsets. When in a Trace Math function, the indicated
function is performed during the sweep with the math function used in place of a
detector. The trace operands for the math function are set using the "Operand 1 /
Operand 2" on page 1750 controls.
–
See "How trace math is processed" on page 862
Remote Command For option details, see "Trace Math Options" on page 860
For Swept SA Measurement (in SA Mode):
:CALCulate:MATH <trace_num>, PDIFference | PSUM | LOFFset | LDIFference |
OFF, <trace_num>, <trace_num>, <real>,<real>
:CALCulate:MATH? <trace_num>
where <trace_num> is any one of:
TRACE1|…|TRACE6
For all other measurements:
:CALCulate:<meas>:MATH <trace_num>, PDIFference | PSUM | LOFFset |
LDIFference | OFF, <trace_num>, <trace_num>, <real>,<real>
:CALCulate[:<meas>]:MATH? <trace_num>
where:
<meas> is the identifier for the current measurement, and
<trace_num> is any one of:
TRACe1|TRACe2|TRACe3
Note that the format of the TRACe<n> parameter differs from that for the Swept SA Measurement
Example
:CALC:MATH TRACE3,PDIF,TRACE1,TRACE2,0,0
Sets Trace 3 to Power Diff trace math function, and sets the First Trace operand (for Trace 3) to Trace
1 and the Second Trace operand (for Trace 3) to Trace 2
:CALC:MATH TRACE3,PSUM,TRACE1,TRACE2,0,0
Sets Trace 3 to Power Sum trace math function and sets the First Trace operand (for Trace 3) to Trace
1 and the Second Trace operand (for Trace 3) to Trace 2
:CALC:MATH TRACE3,LOFF,TRACE1,TRACE2,-6.00,0
858 Spectrum Analyzer Mode User's &Programmer's Reference
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