Monitoring Signal Characteristics
R&S
®
SMW200A
590User Manual 1175.6632.02 ─ 16
●
In non-MIMO configurations, enable "Fading > Summation Ratio A/B".
8.2.2.1 Why is a Power Level Surveillance Important
When routing the signal to the I/Q output connectors of the instrument, adding signals
from several baseband sources and/or applying baseband power offsets or fading the
signal, the signal power is an important parameter.
For example, when measuring the power after fading the peak and RMS power values
can fluctuate significant due to the varying channel state information (CSI) of the fading
process. The retrieving of correct measurement results for the faded signal requires
not only a suitable acquisition point but also a sufficient (long enough) measurement
time to allow the power results to converge reliable values for the long channel state
information. Similar situation and requirements apply when measuring the carrier
power and the carrier+noise power before and after an AWGN block.
Use the observed information for an evaluation and verification of the correct signal
processing throughout the instrument and for a correct adjustment of the power set-
tings at the connected device.
The power values observed in the "Baseband Power Simulation" dialog are suitable as
control mechanism. The values cannot be modified to influence the power and level
control in the instrument.
8.2.2.2 Defining Suitable Acquisition Points
The Figure 8-17 shows an overview of the possible signal acquisition points.
1
4
3
5
7
9
2
6
8
Figure 8-17: Overview of the acquisition points (source) and output points
Querying Information on the Baseband Power Levels
To Next Page
Loading...
