1xEV-DO Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
248
User Manual 1173.9511.02 ─ 11
Fig. 3-2: Example: Sequence with four segments with different lengths, power and frequencies.
The R&S
CMW supports up to 8192 measured 1xEV-DO slots, with up to 1000 slots
per segment. In list mode the R&S
CMW can measure channel power, modulation and
spectrum results. It is possible to enable or disable the measured quantities individually
for each segment. Depending on the measured quantity, additional statistical values
(average, minimum, maximum and standard deviation) are calculated for an adminis-
trable number of slots (statistical length) at the beginning of the segment. The "current"
result of a segment refers to the last measured slot of the statistical length in that seg-
ment (see figure
).
Fig. 3-3: Example: Segment with a configured segment length of 15 slots and different statistical
length for spectrum and modulation measurements.
If two consecutive segments are measured at different RF frequencies or expected
powers, the R&S
CMW changes the analyzer settings in the last slot of the first seg-
ment. This usually impairs the accuracy of the measurement results for this last slot
(see segments 1, 3 and 4 in figure
). It is recommended to exclude these slots from
the statistical length.
segment 2 and segment 3 have the same analyzer settings, so that the
last slot of segment 2 can be measured accurately.
If a slot cannot be measured accurately because of overflow (third slot of segment 1 in
figure
), low signal or synchronization error and "Measure On Exception" is
Off
), the results of the
entire segment are
INValid
. The error cause is reported by the reliability indicator
and the return code included in the measurement results.
General Description
深圳德标仪器
135-1095-0799
