GUI Reference
R&S
®
ZNB/ZNBT
491User Manual 1173.9163.02 ─ 54
Flatness Cal – Max Iterations
Sets a limit for the number of calibration sweeps. See also "Calibration procedure"
on page 177.
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:NREadings
SOURce<Ch>:POWer<PhyPt>:CORRection:COLLect:AVERage[:COUNt]
Flatness Cal – Tolerance
Defines the maximum deviation of the measured power from the cal power. The cali-
bration procedure is stopped if "Max Iterations" is reached or if the measured power is
within the "Tolerance".
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:COLLect:AVERage:NTOLerance
Flatness Cal – Convergence
Modifies the amount of power correction for each of the flatness calibration sweeps.
The power correction in each sweep, as controlled by the calibrated reference receiver
(a-wave receiver), is multiplied by the selected convergence factor. With a conver-
gence factor larger (smaller) than 1, the source power correction after each flatness
calibration step is larger (smaller) than the measured deviation from the desired power.
For analyzer test ports, a convergence factor 1 is appropriate. Convergence factors dif-
ferent from 1 may be indicated for external generator ports which show a nonlinear
behavior. In general, it is recommendable to start the calibration with a convergence
factor 1 and choose smaller values (0.8 ... 0.4) in case that the iteration fails. Inappro-
priate convergence factors can slow down the flatness calibration or even prevent con-
vergence.
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:COLLect:CFACtor
Flatness Cal – Pwr Cal Method
Defines how flatness calibrations of internal RF ports are performed.
"Ref. Receiver": Use a power meter for the calibration of the reference receiver, and
the calibrated reference receiver for the flatness calibration. Default.
"Power Meter": Use a power meter for the calibration of the reference receiver and the
flatness calibration.
For external generators, a power meter must be used.
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:COLLect:METHod
Power Meter
Shows a list of all power meters that have been properly configured and are available
for the power calibration of a source port. The last configured power meter is selected
by default. See "Configured Devices" on page 722.
Remote command:
SOURce:POWer:CORRection:PMETer:ID
Cal Softtool
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