GUI Reference
R&S
®
ZNC
116
User Manual 1173.9557.02 ─ 13
Choose the frequency range and the number of measurement points per sweep. The
sweep range is defined by two values (start and stop frequency or center frequency
and span). The measurement points are equidistant across the sweep range.
Increasing the number of points also increases the measurement time per single
sweep.
5.
Select the measurement bandwidth and source power
Choose a typical measurement bandwidth and one of three typical source power
values. A smaller measurement bandwidth increases the dynamic range but slows
down the measurement. A smaller source power protects the input port of the ana-
lyzer from being overdriven, especially if an active DUT with high gain is measured.
Note:
The predefined bandwidths and source powers have been selected according to the
following criteria:
● The large measurement bandwidth ("Fast Sweep") ensures that the noise of a
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trace at minimum (–40 dBm) source power and 0 dB attenuation is smaller
than 0.1 dB.
● The default source power for a passive DUT ensures that the analyzer receiver
is in its linear range (no compression) if a passive DUT with 0 dB attenuation is
measured. The default source powers for active DUTs ensure no compression if
an active DUT with 20 dB or 40 dB gain is measured. If the actual gain of the DUT
is more than 50 dB, then the default source power of –40 dB is still too high and
needs to be changed after finishing the wizard.
6.
Perform a calibration (optional)
Call the calibration wizard and perform a calibration. The default calibration type is a
full two-port (TOSM) calibration. This calibration can be performed as well using
automatic calibration (if a calibration unit R&S ZV-Z5x is available).
Tip:
You can skip the automatic calibration stage (select "Finish now without Calibra-
tion") if one of the following applies:
● A valid calibration is already assigned to the active channel
● You want to apply a valid calibration stored in the cal pool.
● You don't want to use a calibration, e.g. because the factory calibration is accurate
enough for your measurement.
Instrument reset
In order to obtain a predictable result the measurement wizard has to reset all settings
except the current calibration data. Store your recall set if you don't want to lose the
current configuration.
4.2.1.3
Balanced Ports Dialog
The "Balanced Ports" dialog selects a balanced port configuration and defines reference
impedances for the balanced ports. Selecting a balanced port configuration means that
one or more pairs of physical test ports are combined to form logical (balanced) ports.
Trace Settings
