R&S SGT100A User Manual page 161

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R&S SGT100A
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For "Reference Mode > Carrier ", this entry determines the noise power and hence
the power of the output signal, i.e. the carrier + noise signal. It does not affect the
power of the useful signal, i.e. the carrier power is kept constant.
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For "Reference Mode > Noise ", this entry determines the power of the useful sig-
nal, i.e. the carrier power. The noise power is kept constant.
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The power of the noise signal is derived from the selected E
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
nal
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The power of the output signal is displayed under
Noise Power (System Bandwidth) / Carrier + Interferer Power / Signal + Interferer
Power
Remote command:
[:SOURce<hw>]:AWGN:ENRatio
Carrier Power / Signal Power
Available only for "Mode > Additive Noise" and "Mode > CW Interferer".
The name of this parameter depends on the selected output
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For "Reference Mode > Carrier ", this parameter sets the carrier power. This indi-
cation 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.
●
For "Reference Mode > Noise ", this parameter 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 under "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.
Remote command:
[:SOURce<hw>]:AWGN:POWer:CARRier
Noise Power (System Bandwidth) / Interferer Power
Available only for "Mode > Additive Noise" and "Mode > CW Interferer".
Displays the power of the noise signal in the system respectively to the total band-
width.
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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
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User Manual 1176.8674.02 ─ 07
Additive White Gaussian Noise (AWGN) - Noise Generator
Power. This indication corresponds to the "Level" value in the "Status bar".
.
"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".
Signal Generator Settings
Carrier + Noise Power / Signal +
on page 345
on page 346
/N and displayed with
b 0
Carrier Power / Sig-
Display Mode.
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