Monitoring Signal Characteristics
R&S
®
SMW200A
602User Manual 1175.6632.02 ─ 16
1a,
1b
= Baseband A is 6 dB higher than baseband B (in the current routing, both signals are summed
("Baseband B > Gain = -3 dB") and the baseband B is added to this sum product ("Fading A >
Signal Routing (non-MIMO) > A to A&B, B to A&B")
4a,
4b
= The signal at the output of the "Fading A" is 3 dB higher than the one at the output of the "Fad-
ing B" ("Summation Ratio A/B = 3 dB")
5 = The signal at the input of the "AWGN A" is the sum product of the two output signals after the
fading blocks; the level at that point corresponds to the output level because the "AWGN A >
State > Off"
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:
a) Select "IEEE 802.11 WLAN > Frame Blocks > Append", configure "Frame
Block#2 > Boost = -5 dB" and "Frame Block#2 > State = On"
b) Select "IEEE 802.11 WLAN > General > State > On".
Querying Information on the Baseband Power Levels
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