R&S ZNB Series, User Manual

Page: 94 / 1611

Concepts and features
R&S
®
ZNB/ZNBT
94 User Manual 1173.9163.02 ─ 62
4.1.4.3 Parallel measurements on multiple DUTs
The support for parallel measurements on multiple DUTs depends on the analyzer
type:
●
For a 2-port R&S ZNB or a 4-port R&S ZNB without internal second source (see
Chapter 4.7.14, "Internal second source" , on page 255) this feature is not available
●
For a 4-port R&S ZNB with Internal second source , VNA ports 1 and 2 can mea-
sure one DUT, while port 3 and port 4 can measure another one (using the same
stimulus settings).
●
Each internal generator of a R&S ZNBT can drive multiple VNA ports simultane-
ously. Because of this, even without Internal second source either multiple paths of
a single DUT or multiple DUTs can be measured in parallel (using the same stimu-
lus settings).
2 3 4
5 6 7 8
9
10 11 12
13 14 15 16
1
18 19 20
21 22 23 24
17
DUT1 DUT2
VNA
●
For analyzers with Internal second source , to reduce "crosstalk" between the DUTs
a frequency offset can be applied between the corresponding port groups (see
"Parallel Measurements with Frequency Offset" on page 95).
●
Parallel Frequency Conversion Measurements require identical conversion settings
for all port groups
●
Parallel Intermodulation Measurements are not supported
●
Parallel measurements are not possible if External switch matrices are used
Arbitrary Drive Port Order (R&S ZNBT only)
When performing parallel measurements on multiple DUTs, by default the R&S ZNBT
firmware automatically selects the ports that should be driven in parallel. However, due
to possible crosstalk between DUT ports, it can be beneficial to prevent some ports
Basic concepts