R&S ZNB Series User Manual page 564

®
R&S ZNB/ZNBT
Permanent signal sources can eliminate the power settling times of the DUT but can
introduce measurement inaccuracies, e.g. due to crosstalk between ports. Therefore,
during system error corrections permanent signal sources must be deactivated.
Note:
●
For the R&S ZNB, among the analyzer ports driven by the same
only one can operate as generator port.
●
For the R&S ZNBT, among the analyzer ports driven by the same internal source,
more than one can operate as generator port. When you set the "Gen" flag, the
firmware makes sure that the frequency and power formulas are aligned as descri-
bed in
tively.
An external generator always represents a permanent signal source that is switched
on for all partial measurements. "Gen" determines whether the generator is available
as a signal source in the test setup. The analyzer provides two alternative, independ-
ent ways of selecting a generator as a signal source:
●
Check "Gen" in the "Port Settings" dialog, especially if the generator is not
assigned to a particular measurement result or drive port.
●
Select the generator as a source for a particular measurement result or for a power
calibration, see e.g.
Note: If
erator ports. The "Gen" flag for internal ports is unset and disabled.
Remote command:
SOURce<Ch>:POWer<PhyPt>:PERManent[:STATe]
SOURce<Ch>:POWer<PhyPt>:GENerator<Gen>:PERManent[:STATe]
Freq. Conversion
Opens a dialog to define a port-specific stimulus frequency range (for frequency
sweeps) or CW frequency (for power, time and CW mode sweeps); see
quency Conversion dialog"
base frequency f
This cell is only enabled, if the analyzer is equipped with option R&S ZNB/ZNBT-K4.
The result is displayed in the "Frequency Result" column. A red "Freq. Conversion" cell
indicates that certain hardware limits are exceeded.
Remote command:
SOURce<Ch>:FREQuency<PhyPt>:CONVersion:ARBitrary:IFRequency
User Manual 1173.9163.02 ─ 62
"Dependencies" on page 565, and
Chapter 5.2.3.2, "More Wave Quantities
external switch matrices
on page 565. In the default configuration, the channel
is used.
b
"Dependencies"
are used, only external generators can serve as gen-
GUI reference
Channel Config softtool
internal source,
on page 567, respec-
dialog", on page 298.
"Modify Fre-
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