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Operating Manual 1164.4556.12 - 06
4.61
R&S FSP
Instrument Functions
Analyzer Mode
In time domain mode, the measured values are averaged versus time (after a
sweep).
Remote command:
CALC:MARK:FUNC:NOIS ON;
CALC:MARK:FUNC:NOIS:RES?
Example: Measurement of inherent R&S FSP noise
4.5.11.3
Phase Noise Measurement
PHASE NOISE
The
PHASE NOISE
softkey switches the
PHASE NOISE
function on/off. Addition-
ally, the softkey opens the submenu for manually setting the reference point. The
phase noise measurement can be switched off in the submenu.
MARKER 1
(= reference marker) is used as a reference for the phase noise mea-
surement. The frequency and level of the reference marker are used as fixed refer-
ence values, i.e. the
REFERENCE FIXED
function is activated. After switching on
the phase noise measurement the reference level or the center frequency can thus
be set in a way that the carrier is outside the displayed frequency range, or, for
example, a notch filter is switched on to suppress the carrier.
A noise power density measurement is carried out with the delta marker or delta
markers. This measurement corresponds to the NOISE function in the
MARKER
menu (
MKR
). The result of the phase noise measurement is the difference in level
between the reference point and the noise power density.
The following possibilities can be selected on switching on
PHASE NOISE
:
[
PRESET
]
The R&S FSP is set to default setting.
[
MARKER
]
Marker 1 is switched on and set to the maximum value of the dis-
played spectrum. Set marker to desired frequency using the rotary
knob.
[
NOISE
]
The R&S FSP switches the sample detector on and sets the video
bandwidth to 300 kHz (0.1 × RBW). The power density level of inher-
ent noise is displayed in dBm/Hz in the marker info field.
The R&S FSP noise figure can be calculated from the measured power density
level. It is calculated by subtracting the set RF attenuation (RF Att) from the dis-
played noise level. 174 is to be added to the result to obtain the R&S FSP noise
figure.
Содержание R&S FSP Series
Страница 1: ...R S FSP Spectrum Analyzer Operating Manual 1164 4556 12 06 Test Measurement Operating Manual ...
Страница 24: ...R S FSP Putting into Operation 1 2 Operating Manual 1164 4556 12 06 ...
Страница 72: ...R S FSP Manual Operation 3 2 Operating Manual 1164 4556 12 06 ...
Страница 362: ...R S FSP Instrument Functions Trigger Port Option R S FSP B28 4 290 Operating Manual 1164 4556 12 06 ...
Страница 764: ...R S FSP Remote Control Programming Examples More Complex Programming Examples 7 30 Operating Manual 1164 4556 12 06 ...
Страница 793: ...R S FSP Index Operating Manual 1164 4556 12 06 4 11 ...
Страница 794: ...R S FSP 4 12 Operating Manual 1164 4556 12 06 ...
Страница 795: ...Operating Manual 1164 4556 12 06 4 13 R S FSP ...
Страница 796: ...R S FSP 4 14 Operating Manual 1164 4556 12 06 ...