R&S ZVB - Page 346

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ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 331
the calibration plane; see Power Meter Settings in the Power Calibration section. Power meters
(Pmtr1, Pmtr2, ...) must be configured in the System Configuration – External Power Meters
dialog before they appear in the list.
 Perform Verification Sweep after Cal enables or disables a verification sweep that the analyzer
performs after each source power calibration. The sweep is also displayed in the calibration
sweep diagram. Its purpose is to test the accuracy of the source power calibration after the final
correction data has been acquired. The final power calibration results are applied starting with the
first sweep after the verification sweep.
Remote control:
SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID
SOURce<Ch>:POWer<Pt>:CORRection:MIXer:RF[:ACQuire]
SOURce<Ch>:POWer<Pt>:CORRection:MIXer:IF[:ACQuire]
SOURce<Ch>:POWer<Pt>:CORRection:MIXer:LO[:ACQuire]
Mixer Cal...
Opens a submenu to perform a 2-port calibration (system error correction) for vector mixer
measurements. The calibration can be performed manually or using a calibration unit.
 Manual Cal... opens the Calibration wizard for two full one-port calibrations at ports 1 and 2.
 Calibration Unit... opens a dialog for (partially) automatic calibration using the connected
calibration unit.
Both calibration methods provide equivalent results.
Manual Cal...
Opens the calibration wizard to perform a 2-port calibration (system error correction) for vector mixer
measurements. The calibration is performed with the complete test setup including the additional mixers
MEAS and REF and the highpass or low pass filter. The mixer under test (MUT) is simply replaced by the
required calibration standards. The effect of the calibration is to shift the reference plane to the MUT ports
as shown below (red lines represent the reference plane without calibration and with closed jumper
connectors, green lines represent the reference plane after calibration).
Due to the frequency-converting properties of the vector mixer measurement, the factory calibration is
not applicable and therefore suspended. The Measure Standards calibration dialog shows uncorrected,
raw measurement results; the mixer vector calibration is based on these results.
A proper mixer vector calibration is essential for an accurate vector mixer measurement.