The Spectrum Application (RF Measurements)
R&S
®
FPL1000
258
User Manual 1178.3370.02 ─ 09
Example:
Linear axis:
With a linear axis, the distance between the sweep points is equal, e.g. 200
kHz.
Logarithmic axis:
With a logarithmic axis, the distance between sweep points is variable. In the spectrum
from 10
Hz to 100
Hz, the distance is a few Hz. Between 100
MHz and 1
GHz, the dis-
tance is several MHz.
The R&S
FPL1000 EMI measurement supports a maximum of 200001 sweep points.
This number is based on typical bands measured with a single resolution bandwidth.
There are sufficient sweep points to make sure that a signal is found during the refined
measurement, even when covering 30
MHz to 1
GHz with logarithmic scaling and
120
kHz RBW.
Controlling V-Networks (LISN)
For measurements on power lines, the R&S
FPL1 EMI measurement adds functionality
to control a line impedance stabilization network (LISN) directly. Thus you can deter-
mine the interference caused by power supplies and cables.
This feature requires the optional additional interfaces (R&S
FPL1-B5).
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 R&S
FPL1 EMI measurement supports several V-networks. For each type of net-
work, you can define the phase you want to test for interferences. The R&S
FPL1 EMI
measurement allows you to test one phase at a time.
Table 7-19: 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
Measurements and Results
