The Spectrum Application (RF Measurements)
R&S
®
FPL1000
259
User Manual 1178.3370.02 ─ 11
You can connect the LISN to the user port of the R&S
FPL1000. Control cables for the
various LISNs are available as accessories. The R&S
FPL1000 then controls which
phase of the LISN is to be tested and outputs the information to the user port.
The EMI measurement supports several V-networks. For each type of network, you
can define the phase you want to test for interferences. The EMI measurement allows
you to test one phase at a time.
Table 6-19: 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
ENV432
N, L1. L2, L3
For the ENV216 network, a 150
kHz highpass filter is available to protect the input of
the R&S
FPL1000.
Using Transducer Factors
The R&S
FPL1000 EMI measurement provides functionality to include transducer fac-
tors in the test setup. Transducers are devices like antennas, probes or current probes
that are connected to the R&S
FPL1000 to measure interferences or wanted signals.
The transducer converts the measured value such as field strength, current or RFI volt-
age 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
FPL1000 EMI measurement adds several predefined transducer factors. In
addition, you can also create new and edit existing transducer factors.
For more information, see
Chapter 8.7.1, "Basics on Transducer Factors"
Initial Measurement - Peak Search
The purpose of an initial peak search is to find signals with a high interference level
quickly. The peak search is performed with a fast detector like the peak or average
detector. The initial peak search is the basis for a possible refined measurement of
interferences with the detectors specific to EMI measurements.
Measurements and Results
