Rohde & Schwarz FSW26 - Using Transducer Factors; Initial Measurement - Peak Search

Measurements
R&S
®
FSW
296User Manual 1173.9411.02 ─ 19
Table 5-19: Supported networks and phases
Network type Phases
Two-line V-networks
ESH3-Z5 N, L1
ENV216 N, L1
Four-line V-networks
ESH2-Z5 N, L1. L2, L3
ENV4200 N, L1. L2, L3
For the ENV216 network, a 150 kHz high pass filter is available to protect the input of
the R&S FSW.
5.13.3.5 Using Transducer Factors
The R&S FSW EMI measurement provides functionality to include transducer factors in
the test setup. Transducers are devices like antennas, probes or current probes that
are connected to the R&S FSW to measure interferences or useful signals. The trans-
ducer converts the measured value such as field strength, current or RFI voltage into a
voltage across 50 Ω. During the measurement, the transducer is considered a part of
the instrument.
A transducer usually has a frequency-dependent transducer factor that includes the
frequency response of the corresponding device. During level measurement, the trans-
ducer factor automatically converts the results into the correct unit and magnitude. A
transducer factor consists of a maximum of 1001 reference values. Each reference
value includes frequency, unit and level.
The R&S FSW EMI measurement adds several predefined transducer factors. In addi-
tion you can also create new and edit existing transducer factors.
For more information see chapter 9.2, "Basics on Transducer Factors", on page 566.
5.13.3.6 Initial Measurement - Peak Search
The purpose of an initial peak search is to find signals with a high interference level
quickly. Usually the peak search is performed with a fast detector like the peak or aver-
age detector. The initial peak search is the basis for a possible refined measurement of
interferences with the detectors specific to EMI measurements.
The results of the initial peak search are shown in the Marker Table (see chap-
ter 5.13.2, "EMI Measurement Results", on page 289).
Peak searches can be performed automatically or manually.
Automatic peak search
If enabled, the automatic peak search starts as soon as you select the EMI measure-
ment and one or more markers are active. During automatic peak search, the
Electromagnetic Interference (EMI) Measurement (R&S FSW-K54)