WCDMA Generator
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
927
User Manual 1173.9657.02 ─ 11
Trigger pulses are generated for pattern execution, not for reaching a precondition.
Configuring measurements for single trigger pulses
In order to use a trigger signal providing only one single trigger pulse ("Once" trigger)
to trigger a measurement, you must configure the measurement so that it measures
only one measurement interval - which is then triggered by the single trigger pulse.
If you configure more than one measurement interval, the second interval results in a
trigger timeout.
Configuring only one measurement interval means setting the statistic counts to 1 and
performing a single shot measurement.
6.2.8.6
Preconditions and Pattern Execution
For some measurements it is useful to command the UE to a specific precondition, e.g.
the UE must transmit at maximum power.
Possible preconditions are:
●
Min. Power: The UE is commanded to reach its minimum power.
●
Max. Power: The UE is commanded to reach its maximum power.
●
Alternating: An alternating bit sequence is transmitted. The UE power is kept con-
stant (for algorithm 1 alternating increase/decrease by one power step).
In order to reach the precondition of the active setup you can press the "Precond." but-
ton. But this is only required in exceptional situations. For maximum speed and con-
venience the precondition is reached automatically whenever possible. For buttons and
configuration see
chapter 6.3.6, "DPCCH Settings"
The pattern execution (and trigger pulse generation) can be started by pressing the
"Execute" button. If the precondition of the active TPC setup has not been reached
when the "Execute" button is pressed, the precondition is reached first, then pattern
execution is started. For TPC setups without precondition the pattern execution starts
automatically whenever possible.
Events:
●
When the generator is switched on (generator state changes from OFF to ON):
If the active TPC setup has a precondition, the precondition is reached automati-
cally.
If the active TPC setup has no precondition, pattern execution is started automati-
cally.
●
When the precondition of the active TPC setup is changed (generator state = ON):
The new precondition is reached automatically (if it is set to "None", pattern execu-
tion is started).
●
When the active setup is changed (generator state = ON):
If the new TPC setup has a precondition, the precondition is reached automatically.
If the new TPC setup has no precondition, pattern execution is started automati-
cally.
General Description
深圳德标仪器
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