R&S ZNB Series User Manual page 526

®
R&S ZNB/ZNBT
Remote command:
SOURce:POWer: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:POWer:CORRection:COLLect:CFACtor
Flatness Cal – Pwr Cal Method
Defines how power calibrations are performed.
"Ref. Receiver
after"
"Power Meter
only"
"Ref. Receiver
only"
For external generators, a power meter must be used.
"Ref. Receiver after" is the default behavior.
Remote command:
SOURce:POWer:CORRection:COLLect:METHod
Embedding
Defines whether the source flatness cal uses the configured offset de-/embedding to
get the power values at the DUT (instead of the calibrated reference plane).
This setting applies to all ports and channels. Default is "Off" (no offset or de-/embed-
ding used).
Remote command:
SOURce:POWer:CORRection:COLLect:VNETworks
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
Remote command:
SOURce:POWer:CORRection:PMETer:ID
User Manual 1173.9163.02 ─ 62
Use a power meter for the calibration of the reference receiver, and
the calibrated reference receiver for the flatness calibration.
Use a power meter for the calibration of the reference receiver and
the flatness calibration.
Perform a flatness calibration using the reference receiver. Do not
recalibrate the reference receiver; use the best available reference
receiver calibration instead.
"Configured Devices" on page 782.
GUI reference
Cal softtool
526