Concepts and Features
R&S
®
ZNB/ZNBT
228
User Manual 1173.9163.02 ─ 38
ment setup w.r.t. speed and resources, the characteristics of the available switch matri-
ces have to be taken into account.
4.7.20.2
Matrix Setup and Operation
Setting up a switch matrix at the R&S
ZNB/ZNBT firmware typically involves the follow-
ing steps:
1. establish the physical connection via the appropriate management interface (USB
or LAN or Direct Control)
2. register the matrix (as managed object)
3. define the RF configuration:
a) configure the matrix-VNA-connections according to the existing (or planned)
physical connections between VNA test ports and matrix VNA ports
b) assign the matrix test ports and the remaining VNA ports (i.e. those that are not
connected to a matrix VNA port) to DUT test ports
After this initial setup, the R&S
ZNB/ZNBT takes control of the attached matrices: it
allows to configure the test ports and dynamically establishes the required matrix
routes according to the current measurement task.
To make a measurement, set up a channel where all unused logical ports are disabled.
Switch matrices are global resources: their configuration is not part of a recall set.
However, a recall set will contain information about the required matrices and their RF
connections. At the time the recall set is loaded, the R&S
ZNB/ZNBT checks whether
the same matix setup is still active. If not, a wizard will guide the user through the
matrix configuration.
4.7.20.3
RF Connections and Matrix Connectivity
Depending on the design of the switch matrix and the RF connections between VNA
and matrix
●
certain matrix test ports may not be available for measurements
●
certain transmission measurements may not be possible
Optional Extensions and Accessories
