Concepts and Features
R&S
®
ZNB/ZNBT
213
User Manual 1173.9163.02 ─ 38
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.
4.7.8 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.
4.7.9 GPIB Interface
Option R&S
ZNB/ZNBT-B10
This hardware option provides a GPIB bus connector according to standard IEEE 488 /
IEC 625. The GPIB bus interface is primarily intended for remote control of the
R&S
ZNB/ZNBT from a controller. For details refer to
Chapter 10.2.3, "GPIB Interface"
4.7.10 Device Control
Option R&S
ZNB/ZNBT-B12
This option provides a PCIe and a Direct Control interface, both intended to control
external devices such als Rohde & Schwarz Signal Generators, Rohde & Schwarz
Switch Matrices R&S
ZN-Z8x.
The Direct Control interface allows to establish a direct connection between the VNA
measurement bus and the FPGA controlling the routes of a switch matrix R&S
ZN-Z8x,
bypassing the matrice's microcontroller and significantly reducing the switching times
compared to management via USB or LAN. A suitable cable is available with option
R&S
ZN-B121.
Optional Extensions and Accessories
