Measurements and results
R&S
®
FSVA3000/ R&S
®
FSV3000
232
User Manual 1178.8520.02 ─ 08
defined for each power class according to the current "Sweep List" settings every time
the settings change. These limit lines are labeled "_SEM_LINE_<xxx>_ABS<0...3>"
and "_SEM_LINE_<xxx>_REL<0...3>", where <xxx> is an index to distinguish limit
lines between different channels.
The limit line defined for the currently used power class is indicated by a red line in the
display. The result of the limit check is indicated at the top of the diagram. Note that
only "Pass" or "Fail" is indicated; a "Margin" function as for general limit lines is not
available.
The indicated limit line depends on the settings in the "Sweep List" . Several types of
limit checks are possible:
Table 5-10: Limit check types
Limit check type
Pass/fail criteria
Limit line definition
"Absolute"
Absolute power levels must not
exceed limit line
Defined by the "Abs Limit Start"/ "Abs Limit
Stop" values for each range
"Relative"
Power deviations relative to the TX
channel power must not exceed limit
line
Defined by the "Rel Limit Start"/ "Rel Limit
Stop" values (relative to the TX channel
power), fixed for each range.
"Relative with
function f(x)"
If the power exceeds
both
the abso-
lute
and
the relative limits, the check
fails (see
below)
Defined by the maximum of the absolute or
relative start and stop limit values for each
range. Thus, the start or stop point of the limit
range, or both, are variable (since the maxi-
mum can vary).
Spectrum emission mask (SEM) measurement
