Measurements and results
R&S
®
FSVA3000/ R&S
®
FSV3000
332
User Manual 1178.8520.02 ─ 08
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.
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.
5.13.3.4
Controlling V-Networks (LISN)
For measurements on power lines, EMI measurement adds functionality to the
R&S
FSV3 to control a line impedance stabilization network (LISN) directly. Thus you
can determine the interference caused by power supplies and cables.
This feature requires the optional additional interfaces (R&S
FSV3-B5).
You can connect the LISN to the user port of the R&S
FSV/A. Control cables for the
various LISNs are available as accessories. The R&S
FSV/A 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 5-18: 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
FSV/A.
Electromagnetic interference (EMI) measurement
