R&S SMJ100A, Operating Manual

Page: 315 / 874

Instrument Function
R&S
®
SMJ100A
299 Operating Manual 1403.7458.32 ─ 14
●
The power of the useful signal is displayed in the menu under "Carrier Power". The
displayed value corresponds to the value in the "Level" display field.
●
The power of the output signal is displayed under "C Noise Power".
If "Set Noise Power via C/N or S/N" is selected, the associated E
b
/N
0
value is displayed
here.
Remote command:
[:SOURce<hw>]:AWGN:ENRatio
on page 574
Carrier Power
(Additive Noise and CW Interferer)
The name of this parameter depends on the selected "Display Mode".
●
In "Carrier Reference Mode", this parameter sets the carrier power. This entry cor-
responds to "Level" value in the header of the instrument.
The power of the noise signal which is derived from the entered C/N or S/N value
is displayed under "Noise Power (System Bandwidth)". The value is displayed
automatically in the units of the useful signal.
●
In "Noise Reference Mode", this parameter indicates the carrier power which is
derived from the entered C/N or S/N value. This value corresponds to the "Level"
value indicated in the header.
The noise power is set under "Noise Power (System Bandwidth)".
Note: The peak envelope power (PEP) specified in the header corresponds to the PEP
value of the carrier. The PEP value of the overall signal is displayed in the menu under
"Noise PEP".
Remote command:
[:SOURce<hw>]:AWGN:POWer:CARRier
on page 576
Noise Power (System Bandwidth) / Interferer Power
(Additive Noise, Noise Only, CW Interferer)
●
"Noise Only" mode
Sets the power of the noise signal. This value corresponds to the "Level" value in
the header of the instrument.
●
"Additive Noise" mode
–
"Noise Reference Mode"
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.
– "Carrier Reference Mode"
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 entered under "Carrier Power"; respectively the power is dis-
played under "Carrier Power".
●
"CW Interferer" mode
–
"Noise Reference Mode"
Sets the power of the interfering signal. The power of the carrier is derived from
the entered C/N or S/N value.
– "Carrier Reference Mode"
Displays the power of the interfering signal. The power of the interfering signal
is derived from the entered C/N or S/N value. The carrier power is entered
under "Carrier Power".
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block