Concepts and Features
R&S
®
ZNB/ZNBT
244User Manual 1173.9163.02 ─ 55
VNA
1 2
USB ports
Control connection
(e.g. USB)
External generator
RF
out
External generators must be configured in the SYSTEM – [SETUP] softtool before they
are available as additional sources. Configured generators appear in many control ele-
ments of the R&S ZNB/ZNBT, e.g. in the "More Ratios", "More Wave Quantities", port
configuration and power calibration dialogs.
Reference frequency
To ensure frequency accuracy and frequency stability in a test setup where different
devices represent the signal sources and receivers, it is advisable to use a common
reference frequency. Accurate frequencies are particularly important if external genera-
tors are used for measurements with narrow measurement bandwidths.
A common reference frequency can be established in different ways:
●
Use the analyzer as master device: Set the analyzer to "Internal" frequency refer-
ence (SYSTEM – [SETUP] > "Freq. Ref." > "Internal") and operate all other devices
in external reference mode using the reference clock signal from the REF OUT
connector on the analyzer's rear panel.
Optional Extensions and Accessories
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