Rohde & Schwarz R&S ZNA Series - Marker format

Concepts and features
R&S
®
ZNA
130User Manual 1178.6462.02 ─ 29
●
To change the format of the active marker, select [TRACE] > "Marker" > "Marker
Properties" > "Marker Format".
●
To express the coordinates of the active marker relative to the reference marker,
activate the delta mode [TRACE] > "Marker" > "Marker Properties" > "Delta Mode".
Info Table
If you wish to reserve the full diagram space for traces, you can drag & drop the
marker info field to the info table.
The info table is hidden by default. To display it, open the "Display" softtool (System –
[Display]), activate its "Config" tab and select "Info Table" – "Show".
Marker format
Marker values can be formatted according to the current trace format, according to the
default marker format of the related trace (Trace > [Format] > "Format" > "Dflt Marker
Frmt" ), or formatted individually (Trace > [Marker] > "Marker Props" > "Marker For-
mat").
The available marker formats are defined for all measured quantities and trace formats
(see Chapter 4.2.3.3, "Measured quantities and trace formats", on page 148). Essen-
tially, a marker format is simply a conversion between points on a complex-valued
trace (the raw measurement data) and the respective target format. This must be kept
in mind when interpreting the results and physical units displayed.
The following table describes how a complex marker value z = x + jy is converted. It
makes use of the polar representation z = x + jy = |z| e
jφ(z)
, where
|z| = ( x
2
+ y
2
)
1/2
and φ(z) = arctan( y / x )
Table 4-3: Marker formats
Marker Format Description Formula
Default
●
For an individual marker, this means that
the marker is formatted according to the
default marker format of the related trace.
●
For a trace's default marker format, this
means that the default format is (dynamically)
adjusted according to the selected trace for-
mat.
–
Lin Mag Magnitude of z, unconverted
|z| = sqrt ( x
2
+ y
2
)
dB Mag Magnitude of z in dB dB Mag(z) = 20 * log|z| dB
Phase Phase of z φ (z) = arctan (y/x)
Delay Group delay, neg. derivative of the phase
response
*)
– dφ(z) / dω, where ω denotes
the stimulus frequency
Screen elements