Rohde & Schwarz 1321.0615.02, Руководство пользователя

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Receiver Mode
R&S
®
Spectrum Rider FPH
289 User Manual 1321.1011.02 ─ 11
● Working with Traces ..............................................................................................291
● Using Transducers ................................................................................................ 291
● Using Limit Lines ...................................................................................................291
● Using Isotropic Antenna ........................................................................................291
● Save measurements ............................................................................................. 292
12.2.1 Selecting Detectors for EMI Measurements
●
Max Peak
If the max peak detector is active, the R&S Spectrum Rider displays only the maxi-
mum power of the signal that was measured during the measurement time.
●
Average
If the average detector is active, the R&S Spectrum Rider calculates and displays
the (linear) average power of the signal that was measured during the measure-
ment time.
●
RMS
If the RMS detector is active, the R&S Spectrum Rider calculates and displays the
RMS power of the signal that was measured during the measurement time.
●
Quasi Peak
If the quasi peak detector is active, the R&S Spectrum Rider evaluates the signal in
a way that complies to the requirements defined by CISPR16.
It is designed for EMI measurements and especially useful for the evaluation of
pulse shaped spurious emissions.
When you use the quasi peak detector, the R&S Spectrum Rider uses a particular
evaluation curve or bandwidth depending on the CISPR band.
–
CISPR band A (frequencies from 9 kHz to 150 kHz): 200 Hz bandwidth
– CISPR band B (frequencies from 150 kHz to 30 MHz): 9 kHz bandwidth
– CISPR band C/D (frequencies from 30 MHz to 1 GHz): 120 kHz bandwidth
Note: Frequencies below 9 kHz and above 1 GHz are not allowed with "Auto
CISPR BW". The R&S Spectrum Rider uses "Manual CISPR BW". With "Man-
ual CISPR BW", you can input the CISPR bandwidth.
Bandwidth selection for the quasi peak detector
If you select the quasi peak detector, the R&S Spectrum Rider automatically selects a
6 dB filter bandwidth depending on the measurement frequency.
If you select a 3 dB bandwidth while using the quasi peak detector, the R&S Spectrum
Rider deactivates the quasi peak detector.
1. Press [TRACE] key.
2. Select "Detector" softkey.
The R&S Spectrum Rider displays the submenu to select the trace detector.
3. Select the detector.
See Chapter 6.2.6.2, "Selecting the Detector" , on page 191
Configuring Measurements in Receiver Mode
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