Monitoring Signal Characteristics
R&S
®
SMW200A
633User Manual 1175.6632.02 ─ 30
Both baseband signals are summed but the signal of "Baseband A" is 3 dB higher
than "Baseband B" in the second path.
8. Open the "Baseband Powers" dialog, select "Start", and compare the measure-
ment results.
The influence of both signals on the output RF signal is different; the measured val-
ues confirm that the signal of "Baseband B" is 3 dB lower than the signal of the
"Baseband A". The level of the sum signal is still -31.76 dBm + -34.76 dBm = -
30 dBm.
The measurements are performed once ("Run Mode > Single"); the measurement
time is determined by the selected "Duration".
The displayed measured values are accurate and differ from the theoretical nomi-
nal values.
The baseband power measurements consider enabled power offsets and signal
routing. With suitable acquisition points and method, you can measure the influ-
ence of an enabled fading simulator or detect the configured signal-to-noise value
in the AWGN generator.
To perform baseband power measurements on bursted signals using the gated
acquisition
The baseband power measurements using gated acquisition use marker signals to
determine the particular part of the signal to be analyzed. Perform the following set-
tings to generate a bursted WLAN 802.11n signal consisting of two frame blocks with
idle periods between them.
1. Press the PRESET key.
2. In the block diagram, select "Baseband A > IEEE 802.11" and perform the follow-
ing:
Querying Information on the Baseband Power Levels
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