Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 373 / 813

R&S
®
ZVA/ZVB/ZVT Channel Menu
1145.1084.12 4.211 E-6
External Generators dialog before they appear in the list.
•
Take Cal Sweep initiates a calibration sweep for the selected source. The progress of the
sweep is monitored in the calibration sweep diagram. After the necessary calibrations have
been completed, a message in the trace list indicates the status of the power calibration.
•
Abort Sweep stops a running sweep. The data acquired in the aborted sweep is discarded.
•
The Settings panel displays the essential parameters of the source power calibration, to be
defined in the Modify Source Power Cal Settings dialog.
•
Source Power Correction Off can be selected/deselected as soon as power calibration data
have been acquired for the selected source. If the box is checked, the calibration data is kept in
memory but not applied to the source. The
Power Correction Off softkey disables the power
correction for all receivers and sources.
•
Modify Settings... opens the Modify Source Power Cal Settings dialog.
•
Power Meter selects an external power meter that is used to measure the exact source power
at the calibration point. Power meters (Pmtr1, Pmtr2, ...) must be configured explicitly in the
System Configuration – External Power Meters dialog before they appear in the list.
•
Power Meter Config... opens the System Configuration – External Power Meters dialog.
•
Perform Verification Sweep after Cal enables or disables a verification sweep that the analyzer
performs after the 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 have been acquired. The final power calibration results are applied starting with
the first sweep after the verification sweep.
Remot
e
control
:
SOURce<Ch>:POWer<Pt>:CORRection[:ACQuire]
SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire]
SOURce<Ch>:POWer<Pt>:CORRection[:STATe]
SOURce<Ch>:POWer<Pt>:CORRection:GENerator[:STATe]
SOURce<Ch>:POWer<Pt>:CORRection:PMETer:ID
SOURce<Ch>:POWer<Pt>:CORRection:COLLect[:ACQuire]:VERification[:STAT
e]
Calibration Sweep Diagram
The calibration sweep diagram displays the power measured by the external power meter while a
source power calibration is performed.
•
A trace is displayed for each calibration sweep.
•
If Perform Verification Sweep after Cal is enabled in the Source Power Cal dialog, an additional
trace is displayed after the end of the calibration.
The diagram is automatically scaled so that the center corresponds to the selected Cal Power. For
frequency sweeps, a horizontal trace close to the Cal Power indicates an accurate power calibration.
For power sweeps, the ideal trace is a power ramp.
Below the sweep diagram, the status messages Calibration in Progress/Finished and Verification in
Progress/Finished show the progress of the calibration procedure.
Modify Source Power Cal Settings
The Modify Source Power Cal Settings dialog displays the target power for the source power calibration
and defines stop criteria.