Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

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R&S
®
ZVA/ZVB/ZVT Glossary
1145.1084.12 E-1 3
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, e.g. the one
defined in the Define Math dialog. The expression is a mathematical relation between constants
and the data or memory traces of the active setup.
Measurement point: Result of the measurement at a specified stimulus value (frequency/power/time).
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.
Mixer: Device that converts an RF signal at one frequency into a signal at another frequency. The
frequency that is to be shifted is applied at the RF input and the frequency shifting signal (from
a local oscillator, LO) is applied to the RF mixer's LO port, resulting in an output signal at the
mixer's Intermediate Frequency (IF) port.
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 - Search menu, it is possible to
define a minimum excursion that both types of peaks must have to be considered valid.
Power calibration: Correction method that eliminates frequency response errors in the signal path and
in the receiver and ensures accurate power levels and readings; see source power calibration
and receiver power calibration.
R
Receiver power calibration: Correction method that the power readings at a specified input port of the
analyzer agree with the source power level calibrated at an arbitrary reference plane. Typically,
the reference plane is at the input of the receiver so that the calibration eliminates frequency
response errors in the calibrated receiver.
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.
S
Setup: A setup comprises a set of diagram areas with all displayed information that can be stored to a
NWA setup file (*.zvx). Each setup is displayed in an independent window.