R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 352
settings are enabled in the Port Configuration (e.g. it will not work for inverted conversion IF=LO-RF and
enhanced wave correction).
Define Intermod Dist Meas... opens a wizard that you can use to configure the intermodulation
measurement. The remaining entries in the submenu are available as soon as a valid
configuration has been defined.
CW Mode Intermod Spectrum... opens a dialog that you can use to configure the intermodulation
distortion spectrum measurement.
Intermod Dist Meas Power Cal opens the power calibration wizard for the intermodulation
measurement.
Intermod Dist Meas Cal opens a submenu to perform a system error correction for the
intermodulation measurement.
Reset Frequency Conv and Intermod disables the intermodulation measurement mode and
switches back to normal (non frequency-converting) mode.
Define Intermodulation Distortion Measurement
The Define Intermodulation Distortion Measurement wizard defines the source and receiver settings for
the intermodulation measurement.
Frequency range for intermodulation measurements
After a preset, the lower tone is swept across the full frequency range of the analyzer, which means that
the upper tone frequency is out of range. Click Set Frequencies and Powers and reduce the sweep range
to establish compatible settings.
The intermodulation products of k
th
order (IMk) are measured at the lower tone frequency minus (k – 1)/2
times the tone distance and at the upper tone frequency plus (k – 1)/2 times the tone distance. These
receiver frequencies must be within the frequency range of the analyzer, too.
The analyzer displays a message if the source frequency (as defined in the Port Configuration dialog) at
one of the used source ports is different from the channel base frequency (the frequency-converting /
arbitrary mode is active). Disabling the arbitrary mode ensures a valid port configuration and facilitates the
interpretation of the intermodulation distortion results.
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