R&S ZNA26 - Page 573

GUI reference
R&S
®
ZNA
573User Manual 1178.6462.02 ─ 20
Some buttons serve as openers for additional dialogs:
●
"Cal Power...": see Chapter 5.11.3.2, "Cal Power Config dialog", on page 574
●
"Transm. Coefficients...": see Chapter 5.11.3.3, "Power Meter Transmission Coeffi-
cients dialog", on page 577
●
"Power Meters...": see Chapter 4.7.38, "External power meters", on page 285
Switch Off Other Sources
Ensures that the power at all sources except the calibrated source is switched off dur-
ing the calibration. Recommended, if the measurement involves a combination of dif-
ferent signals.
Remote command:
SOURce<Ch>:POWer<PhyPt>:CORRection:OSOurces[:STATe]
Flatness Cal – Max Iterations
Sets a limit for the number of calibration sweeps. See also "Calibration procedure"
on page 193.
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 power calibrations are performed.
"Ref. Receiver
after"
Use a power meter for the calibration of the reference receiver, and
the calibrated reference receiver for the flatness calibration.
Cal softtool