R&S ZNL Series User Manual

VNA GUI reference
R&S
®
ZNL/ZNLE
359User Manual 1178.5966.02 ─ 20
Table 10-2: Effect of the operators on a complex quantity z = x + jy.
+, -, *, / Basic arithmetic operations
() Grouping parts of an expression
Lin Mag
|z| = sqrt ( x
2
+ y
2
)
dB Mag dB Mag(z) = 20 * log|z| dB
round x real ⇒ round(x) rounds x to the closest integer (away from zero for
ties)
x,y real ⇒ round(x+yj) = round(x)+round(y)j
x
y
Exponential, e.g. z
2
Arg Phase φ (z) = arctan ( Im(z) / Re(z) )
Re, Im x, y (Real and Imag)
log, ln Common (base 10) or natural (base e) logarithm
Min, Max Smaller or larger values of all points of two traces, e.g.
Min(Trc1,Trc2)
StimVal *) Stimulus value*)
tan, atan, sin, asin, cos, acos Direct and inverse trigonometric functions.
*) The operand "StimVal" can be used for all sweep types. Please note that – as with
all user math operands – only the numerical value without unit is processed in the user
math formula.
●
In frequency sweeps "StimVal" provides the stimulus frequency in Hz.
●
In power sweeps, "StimVal" provides the voltage in V that results from the source
power in dBm. To obtain the correct source power in dBm (for "dB Mag" trace for-
mat), Result is Wave Quantity must be enabled. Note that, due to the conversion
into a dBm value, the source power depends on the reference impedance of the
port associated with the measured wave quantity, to be set in the "Balanced Ports"
dialog.
●
In time sweeps, "StimVal" is the stimulus time in s.
●
In CW mode sweeps, "StimVal" is the number of the point.
Remote command:
CALCulate<Chn>:MATH[:EXPRession]:SDEFine
CALCulate<Chn>:MATH:FORMatted[:EXPRession]:SDEFine
Result is Wave Quantity
"Result is Wave Quantity" controls the conversion and formatting of the mathematic
expression.
This switch is available for unformatted trace data (Complex Data) only.
●
If "Result is Wave Quantity" is enabled, the analyzer assumes that the result of the
mathematical expression represents a voltage. Examples for voltage-type expres-
sions are all terms proportional to a wave quantity (e.g. 1.1*Data, if a wave quantity
is measured) or to a stimulus value of a power sweep (R&S ZNL only).
If "Show as": "Power" is selected in the "More Wave Quantities" dialog, the result is
converted into a linear power before the selected trace format is applied. Otherwise
no conversion is performed, and "dB Mag" results are referenced to 1 μV.
Trace softtool

R&S ZNL Series Specifications

General

Brand	R&S
Model	ZNL Series
Category	Measuring Instruments
Language	English