Measurements and Results
R&S
®
FSVA3000/ R&S
®
FSV3000
214
User Manual 1178.8520.02 ─ 01
Relative limit line functions
A new function allows you to define limit lines whose start or end points (or both) are
variable, depending on the carrier power. Thus, the resulting limit line can change its
slope within the range, depending on the carrier power. Common relative limit lines are
calculated once for the defined start and end points and maintain a constant slope.
If the relative limit value function is used in combination with the "Abs and Rel" or "Abs
or Rel" limit check types, an additional condition is considered for the limit check (see
).
Limit check results in the result summary
For each range, the peak measured value and the deviation of these values from the
limit line are displayed in the result summary. If the limit check is passed for the range,
the deviation represents the closest value to the limit line. If the limit check is passed
for the range, the deviation represents the closest value to the limit line. If the limit
check for the range fails, the deviation represents the maximum violation against the
limit line. Furthermore, the absolute power levels and the relative deviation of the
peaks from the TX channel power are displayed. Values that exceed the limit are indi-
cated in red and by an asterisk (*).
Although a margin functionality is not available for the limit check, a margin (threshold)
for the peak values to be displayed in the Result Summary can be defined. (In the "List
Evaluation" settings, see
Chapter 7.6.5.7, "List Evaluation (Results Configuration)"
7.6.4.3
Fast SEM Measurements
To improve the performance of the R&S
FSV/A for spectrum emission mask measure-
ments, a "Fast SEM" mode is available. If this mode is activated, several consecutive
ranges with identical sweep settings are combined to one sweep internally, which
makes the measurement considerably faster. The displayed results remain unchanged
and still consist of several ranges. Thus, measurement settings that apply only to the
results, such as limits, can nevertheless be defined individually for each range.
Prerequisites
"Fast SEM" mode is available if the following criteria apply:
●
The frequency ranges are consecutive, without frequency gaps
●
The following sweep settings are identical (for details see
–
"Filter Type"
–
"RBW"
–
"VBW"
Spectrum Emission Mask (SEM) Measurement
