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R&S
ZNB/ZNBT
Example:
The 4x24 extension of switch matrix R&S ZN-Z84 consists of 2 separate 2x12 subma-
trices. 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 submatrix is con-
nected to the VNA, then obviously you cannot use the test ports of this submatrix for
measurements.
R&S ZN-Z84
Figure 4-28: 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.
R&S ZN-Z84
Figure 4-29: 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.
User Manual 1173.9163.02 ─ 62
A
Left 2x12 submatrix
full crossbar
4x24
13
14
15
16
1
2
3
4
Transmission measurement possible
A
Left 2x12 submatrix
full crossbar
4x24
13
14
15
16
1
2
3
Transmission measurement
not possible
Optional extensions and accessories
R&S ZNx
C
B
Right 2x12 submatrix
full crossbar
17
18
19
20
21
5
6
7
8
9
not connectable
R&S ZNx
C
B
Right 2x12 submatrix
full crossbar
17
18
19
20
4
5
6
7
8
... possible
Concepts and features
VNA ports
Matrix VNA ports
D
22
23
24
Matrix test ports
10
11
12
VNA ports
D
21
22
23
24
9
10
11
12
... not possible
272
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