Concepts and Features
R&S
®
ZNB/ZNBT
229
User Manual 1173.9163.02 ─ 38
Example:
The 4x24 extension of switch matrix R&S
ZN-Z84 consists of 2 separate 2x12 subma-
trices, where matrix VNA ports of the "left" submatrix cannot be connected to the test
ports of the "right" submatrix and vice versa. If none of the two VNA ports of a subma-
trix is connected, obviously no connection between the VNA and the submatrice's test
ports can be established and hence neither reflection nor transmission measurements
are possible.
Right 2x12 submatrix
full crossbar
R&S ZNx
Left 2x12 submatrix
full crossbar
not connectable
R&S ZN-Z84
4x24
VNA ports
Matrix VNA ports
Matrix test ports
Transmission measurement possible
A
C
B
D
13
14
15
16
17
18
19
20
21
22
23
24
7
8
9
10
11
12
1
2
3
4
5
6
Figure 4-15: Unconnected right submatrix
With the same extension type, connecting one of two submatrix VNA ports enables
reflection measurements for the corresponding matrix test ports. However, as long as a
second connection between the VNA and this submatrix is missing, "intra-submatrix"
transmission measurements are still impossible.
Right 2x12 submatrix
full crossbar
R&S ZNx
Left 2x12 submatrix
full crossbar
… possible
R&S ZN-Z84
4x24
VNA ports
Transmission measurement
not possible
A
C
B
D
13
14
15
16
17
18
19
20
21
22
23
24
7
8
9
10
11
12
1
2
3
4
5
6
… not possible
Figure 4-16: Partially connected submatrices
Basically the same argument holds true for variant 16 of switch matrix ZV-Z82, which
consists of 4 separate 1x4 submatrices and that allows "inter-" but no "intra-submatrix"
transmission measurements.
Optional Extensions and Accessories
