Trying Out the Instrument
R&S
®
FSWP
60
Getting Started 1177.5756.02 ─ 13
The application automatically starts a continuous measurement and measures
the noise characteristics of the DUT in the default frequency range.
3. Select the "Baseband Noise" measurement via the [MEAS] key.
4. You can stop the measurement (to analyze the measurement data in detail)
with the [RUN SGL] or [RUN CONT] key; [RUN SGL] performs one more
measurement, then stops, [RUN CONT] stops immediately.
By default, two traces are displayed: the first trace shows the smoothed data
without spurs, the second trace the raw data including spurs.
Tip:
Integrated measurement results. Note that the "PM", "FM" and "Jitter"
results are always "0" for baseband noise measurements.
5.2.5
The Pulsed Phase Noise Measurement
Noise measurements on pulses are available with the optional pulsed phase
noise measurements firmware application.
Test setup
R&S FSWP
RF
V
aux
V
tune
V
supply
required connections
optional connections
DUT
Trigger Input
How to measure the phase noise of a pulse
1. Connect the DUT via cable to the RF input of the R&S
FSWP as shown in the
illustration.
2. Perform a [PRESET].
3. Select the [MEAS] key and select the "Pulsed Phase Noise" measurement.
The application tries to detect a pulse in the signal you have applied, using
two automatic mechanisms:
•
search for the pulse frequency
•
detection of the pulse characteristics
If successful, it configures a gate based on the pulse characteristics and starts
the noise measurement of the pulse.
Measurements
