CDMA2000 Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
723
User Manual 1173.9511.02 ─ 11
Trigger modes
A list mode measurement can either be triggered only once, or it can be retriggered at
the beginning of specified segments.
In "trigger once" mode a trigger event is only required to start the measurement. As a
result the entire range of segments (up to 200) is measured without additional trigger
event. The trigger is rearmed after the measurement has been finished. Specified ret-
rigger flags are ignored.
The "trigger once" mode is recommended for UL signals with accurate timing over the
entire range of segments.
In "segment" mode the retrigger flag of each segment is evaluated. It defines whether
the measurement waits for a trigger event before measuring the segment, or not. Ret-
riggering the measurement is recommended if the timing of the first subframe of a seg-
ment is inaccurate, e.g. because of signal reconfiguration at the UE. Furthermore ret-
riggering from time to time can compensate for a possible time drift of the MS. The ret-
rigger flag of the first segment of the measurement is always ignored (implicitly set to
ON).
In the example shown below the "Segment" mode is enabled. The retrigger flag is OFF
for the second segment and ON for the third segment. Thus the measurement stops
when the first and second segment have been captured and waits for a trigger event
before capturing the third segment.
In "Once" mode, the radio configuration is inherited from the multi evaluation measure-
ment, ignoring the radio configuration defined for the individual segments.
5.2.5 Reverse Signal Properties
This section provides the following background information, referenced from other sec-
tions.
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General Description
深圳德标仪器
135-1095-0799
