R&S ZNA67 - Internal 2 Nd Source and 2 Nd lo Generator for 2-Port R&S ZNA; Memory Extension for Data Streaming

Concepts and features
R&S
®
ZNA
274User Manual 1178.6462.02 ─ 20
4.7.22 Internal 2nd source and 2nd LO generator for 2-port R&S ZNA
Option R&S ZNAxx-B52
Without additional HW options, a two-port R&S ZNA is equipped with a single internal
source. This source can drive a single port at a time. Hardware option R&S ZNAxx-B52
provides a second internal RF source and a second internal LO.
The frequency range of the second internal RF source corresponds to the frequency
range of the related R&S ZNA. The frequency range of the LO generators (1st and
2nd) is 10 MHz to 26.5 GHz.
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This option is only available for R&S ZNA26 and R&S ZNA50.
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If the R&S ZNA is equipped with a second internal LO and an LO Out, then the
second internal LO is connected to the LO Out.
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For 4-port R&S ZNA, option R&S ZNAxx-B5 offers a second internal LO.
See Chapter 4.7.21, "Second internal LO generator for 4-port R&S ZNA",
on page 273.
With two independent internal RF sources, the R&S ZNA can generate two-tone stimuli
without the need for an additional generator. Using Direct generator/receiver access,
the upper-tone port can serve as receiving port in intermodulation and two-tone group
delay measurements. And, with two independent internal RF sources the R&S ZNA
can generate phase coherent or true differential source signals.
The additional second LO source enables measurements with two frequency convert-
ers, and many additional Frequency conversion measurements without the need for
additional (external) generators. The LO Out (option R&S ZNA-B8) can also serve as
additional source.
4.7.23 Memory extension for data streaming
R&S ZNA-B7
Hardware option R&S ZNA-B7 comprises an additional memory board, that is exclu-
sively used for buffering data of the measurement and reference receivers. Compared
to the standard memory, the buffering speed is twice as high.
This high-speed memory is particularly useful for Pulsed measurements, because a
high time resolution requires a high IF bandwidth and hence a large amount of data to
be buffered. The "Pulse Profile" sweep type uses the R&S ZNA-B7, if available.
The doubled memory speed also doubles the number of wave quantities that can be
measured simultaneously at a given bandwidth. The following table presents optimum
values.
Optional extensions and accessories