GUI reference
R&S
®
ZNB/ZNBT
592
User Manual 1173.9163.02 ─ 62
5.12.4.5
Intermod. Pwr. Cal wizard
The "Intermod. Pwr. Cal" wizard guides you through the power calibration for the inter-
modulation measurement. A power calibration ensures:
●
accurate levels at the input of the DUT (source power calibration for the lower and
upper tone)
●
accurate power measurement of the intermodulation quantities (receiver calibra-
tion)
The necessary calibration steps are automatically performed across the entire fre-
quency or power range of the intermodulation measurement.
Access:
Channel – [Channel
Config] > "Intermod" > "Intermod. Pwr. Cal..."
Start Cal Sweep
Starts the intermodulation power calibration. An external combiner and a power meter
are required for the calibration setup (see
Chapter 5.18.4.2, "External Power Meters
on page 780). The lower and upper tone sources are combined via the exter-
nal combiner.
The calibration is performed in three steps:
●
Source power calibration for the lower tone signal. The external power meter is
connected to the combiner output. It measures the source power at the calibration
plane (input of the DUT). During the lower tone source power calibration, the upper
tone is switched off.
If a frequency conversion measurement is active, a second source power calibra-
tion is performed at the converted lower tone frequency (receiver frequency). This
second source power calibration is the basis for the receiver calibration in step 3.
Channel Config softtool