R&S
ZVL
Glossary of Terms
Quick Start Guide 1303.6538.62 - 05
6
M
Marker:
Tool for selecting points on the trace and for numerical readout of measured
data. A marker is displayed with a symbol (a triangle, a crossbar or a line) on
the trace; its coordinates are shown in the marker info field.
Mathematical trace:
Trace that is calculated according to a mathematical expression.
The expression is a mathematical relation between a data and a memory trace
of the active setup.
Measurement point:
Result of the measurement at a specified stimulus value
(frequency).
Measurement result:
Set of all measurement points acquired in a measurement (e.g.
a sweep). The measurement result is displayed in a diagram area and forms a
trace.
Memory trace:
Trace that is associated to a data trace and stored in the memory.
Data traces and the associated memory traces share the same channel and
scale settings. Alternatively, memory traces can be imported from a file.
P
Partial measurement:
Measurement at a specified stimulus value maintaining definite
hardware settings. Depending on the measurement type, several partial
measurements may be needed to obtain a measurement point. A full n-port S-
parameter measurement requires n partial measurements with n different drive
ports.
Peak:
Local maximum or local minimum (dip) on the trace. In the Trace - Marker-> -
Marker Search menu, it is possible to define a minimum excursion that both
types of peaks must have to be considered valid.
R
Reflection tracking error:
Frequency-dependent variation of the ratio of the reflected
wave to the reference wave at a test port when an ideal reflection coefficient (=
1) is measured. The reflection tracking error can be corrected by means of a
reflection normalization or one of the more sophisticated calibration methods.
Reverse:
A measurement on a two-port DUT is said to be in reverse direction if the
source signal (stimulus) is applied to port 2 of the DUT.
Ripple test:
A special type of limit test where the maximum difference between the
largest and the smallest response value of the trace must not exceed the
specified limit. This test is suitable e.g. to check whether the passband ripple
of a filter is within acceptable limits, irrespective of the actual transmitted power
in the passband.
S
Setup:
A setup comprises a set of diagram areas with all displayed information that
can be stored to a NWA setup file (*.nwa). Each setup is displayed in an
independent window.
Source match error:
Measurement error caused by a mismatch of the analyzer's
source port causing part of the signal reflected of the DUT to be reflected
again of the source port so that it is not measured there. The source match
