User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
299User Manual 1178.3370.02 ─ 03
Figure 7-26: Behavior for overlapping masks
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For the ranges in which multiple limit lines are significant, a range-specific function
determines the behavior of the limit check
Limit calculation for individual ranges
For each range a function can be defined that determines the behavior of the limit
check if there are multiple limit lines:
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"NONE" : In reference ranges no limit check is performed;
Reference ranges always use the function "NONE" .
For other ranges, see the combinations for overlapping ranges below.
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"SUM" : sum of the two limit lines (calculated for linear powers) is used
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"MAX" : maximum of the two limit lines is used
This leads to the following combinations for overlapping ranges:
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"MAX" + "MAX" : maximum of the two limit lines is used
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"MAX" + "SUM" : maximum of the two limit lines is used
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"SUM" + "SUM" : sum of the two limit lines (calculated for linear powers) is used
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"NONE" + "MAX" / "NONE" + "SUM" : limit line (and parameters) of the "NONE"
range are ignored
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"NONE" + "NONE" : depends on the position of the overlapping ranges in relation
to the mid-frequency between the two neighboring sub blocks:
– Overlap is completely below the mid-frequency: limits and parameters of the
left sub block are used
– Overlap is completely above the mid-frequency: limits and parameters of the
right sub block are used
– Overlap crosses the mid-frequency: new subranges are created: one to the left
of the mid-frequency, one to the right of the mid-frequency. The left subrange
uses the limits and parameters of the left sub block, the right subrange uses
the limits and parameters of the right sub block.
Measurements and Results