LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
768
User Manual 1173.9628.02 ─ 16
4.3.2.4
Power Settings
The following parameters configure the power settings of the LTE PRACH measure-
ment.
Fig. 4-17: Power settings
Dynamics > Statistic Count
Defines the number of measurement intervals per measurement cycle (statistics cycle,
single-shot measurement). This value is also relevant for continuous measurements,
because the averaging procedures depend on the statistic count.
For power dynamics measurements the measurement interval is completed when the
R&S
CMW has measured one preamble plus the preceding and the following power
OFF time.
The measurement provides independent statistic counts for modulation results and
power dynamics results. In single-shot mode and with a shorter modulation statistic
count, the modulation evaluation is stopped while the R&S
CMW still continues provid-
ing new power dynamics results.
Remote command:
High Dynamic Mode
Enables or disables the high dynamic mode.
The high dynamic mode is suitable for power dynamics measurements involving high
ON powers. In that case the dynamic range of the R&S
CMW may not be sufficient to
measure both the high ON powers and the low OFF powers accurately.
In high dynamic mode the dynamic range is increased by measuring the results in two
shots. One shot uses the configured settings to measure the ON power. The other shot
uses a lower "Expected Nominal Power" value to measure the OFF power results.
Disable the high dynamic mode to optimize the measurement speed, especially when
you are not interested in power dynamics results or measure low ON powers using a
low "Expected Nominal Power" setting.
While the combined signal path scenario is active, this parameter is not configurable.
Remote command:
4.3.2.5
Trigger Settings
The "Trigger" parameters configure the trigger system for the LTE PRACH measure-
ment.
GUI Reference
深圳德标仪器
135-1095-0799
