Concepts and features
R&S
®
ZNA
273User Manual 1178.6462.02 ─ 20
4.7.19 Internal 3rd and 4th source for 4-port R&S ZNA
R&S ZNAxx-B3
A four-port R&S ZNA has at least two internal sources. With two internal sources
(default), the physical ports of a four-port VNA are split into groups P1 = {1,2} and P2 =
{3,4} such that source 1 can only drive ports in P1 and source 2 can only drive ports in
P2. Independent signals require the source ports to reside in different port groups. For
example, you cannot use VNA ports 1 and 2 as independent source ports.
Hardware option R&S ZNAxx-B3 expands a four-port network analyzer R&S ZNAxx
with a third and fourth internal source. With four independent internal sources, a wide
range of Frequency conversion measurements can be performed, without the need for
additional (external) generators.
4.7.20 Precision frequency reference
Option R&S ZNA-B4
An optional OCXO improves the static frequency accuracy of the R&S ZNA. For
details, refer to the data sheet.
4.7.21 Second internal LO generator for 4-port R&S ZNA
Option R&S ZNA-B5
For 4-port R&S ZNA, hardware option R&S ZNA-B5 provides a second internal LO that
enables parallel measurement of a- and b-waves in frequency converting measure-
ments.
The frequency range of the internal LO generators (1st and 2nd) is 10 MHz to
26.5 GHz.
●
For 2-port R&S ZNA, option R&S ZNAxx-B52 offers a second internal RF source
and a second internal LO.
See Chapter 4.7.22, "Internal 2nd source and 2nd LO generator for 2-port
R&S ZNA", on page 274.
●
If the R&S ZNA is equipped with a second internal LO generator and an LO Out,
then the second internal LO generator is connected to the LO Out.
Optional extensions and accessories
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