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Concepts and Features
R&S
®
ZNB/ZNBT
232
User Manual 1173.9163.02 ─ 55
5.7.13
Internal Second Source
Options R&S
ZNB-B2, R&S
ZNB20-B2, R&S
ZNB40-B2 (and R&S
ZNBTx-B112)
The hardware options
●
R&S
ZNB-B2 "Internal Second Source for R&S
ZNB4, R&S
ZNB8 (4-Port)" and
●
R&S
ZNB20-B2, "Second Internal Generator for R&S
ZNB20 (4-Port)"
●
R&S
ZNB40-B2, "Second Internal Generator for R&S
ZNB40 (4-Port)"
expand four-port network analyzers R&S
ZNB with a second internal generator, which
can be used as an additional stimulus signal, e.g for mixer measurements; see
ter 5.7.4, "Frequency Conversion Measurements"
For the R&S
ZNBT, an internal second source is automatically added with option
R&S
ZNBTx-B112 (x=8,20), i.e. if the analyzer is equipped with 12 ports or more; see
Chapter 5.7.1, "Additional Test Ports (R&S
Limitations
●
With two internal sources the physical VNA ports are split into groups P1 and P2
such that source 1 can only drive ports in P1 and source 2 can only drive ports in
P2:
–
P1 = {1,2} and P2 = {3,4} for a four-port R&S
ZNB
–
P1 = {1,...,8} and P2 = {9,...,24} for the R&S
ZNBT
Independent signals require the source ports to reside in different port groups. On
the R&S
ZNB, for example, you cannot use ports 1 and 2 as independent source
ports. A R&S
ZNBT on the other hand must be equipped with at least 12 ports to
allow independent signals.
●
Operation with Internal Second Source is
not
are part of the RF connection configuration.
5.7.14
Precision Frequency Reference
Option R&S
ZNB/ZNBT-B4
An optional OCXO improves the static frequency accuracy of the R&S
ZNB/ZNBT. For
details, refer to the data sheet.
5.7.15
GPIB Interface
Option R&S
ZNB/ZNBT-B10
This hardware option provides a GPIB bus connector according to standard IEEE 488 /
IEC 625 (GPIB). The GPIB bus interface can be used for controlling the R&S
ZNB/
ZNBT from an external controller.
Optional Extensions and Accessories