Rohde & Schwarz SMW200A - Carrier Power, Signal Power; Noise Power (System Bandwidth), Interferer Power

Simulating Fading, Adding Noise and Predistortions, and Impairing the Signal
R&S
®
SMW200A
401User Manual 1175.6632.02 ─ 16
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The power of the noise signal is derived from the selected E
b
/N
0
and displayed with
the parameter "Noise Power" in the units of the useful signal.
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The power of the useful signal is displayed with the parameter "Carrier Power".
This indication corresponds to the "Level" value in the "Status bar".
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The power of the output signal is displayed as "Carrier + Noise Power".
See also Figure 5-3.
Remote command:
[:SOURce<hw>]:AWGN:ENRatio on page 1008
Carrier Power, Signal Power
(Additive Noise and CW Interferer)
The name of this parameter depends on the selected output Show Powers for Output.
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In "Reference Mode > Carrier": sets the carrier power. This indication corresponds
to the "Level" value in the "Status bar".
The power of the noise signal is derived from the selected C/N or S/N value and
displayed with the parameter "Noise Power" in the units of the useful signal.
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In "Reference Mode > Noise", indicates the carrier power as derived from the
entered C/N or S/N value. This indication corresponds to the "Level" value in the
"Status bar".
The noise power can be set with the parameter "Noise Power".
Note: The peak envelope power (PEP) displayed in the "Status bar" corresponds to
the PEP value of the carrier. The parameter "Carrier+Noise (PEP)" indicates the PEP
value of the overall signal.
See also Figure 5-3.
Remote command:
[:SOURce<hw>]:AWGN:POWer:CARRier on page 1008
Noise Power (System Bandwidth), Interferer Power
Displays the power of the noise signal in the system respectively the total bandwidth in
"Noise Only" and "Additive Noise" mode.
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"Noise Only" mode
Sets the power of the noise signal. This indication corresponds to the "Level" value
in the "Status bar".
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"Additive Noise" mode
– "Reference Mode > Noise"
Sets the power of the noise signal. The power of the carrier is derived from the
entered C/N or S/N or Eb/N0 value.
– "Reference Mode > Carrier"
Displays the power of the noise signal in the system bandwidth. The power of
the noise signal is derived from the entered C/N or S/N or Eb/N0 value.
The carrier power is selected with "Carrier Power"; respectively the signal
power is displayed by "Signal Power".
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"CW Interferer" mode
– "Reference Mode > Noise"
Sets the power of the interfering signal. The power of the carrier is derived from
the entered C/N or S/N value.
– "Reference Mode > Carrier"
Adding Noise to the Signal