Concepts and Features
R&S
®
ZNB/ZNBT
244
User Manual 1173.9163.02 ─ 53
●
certain matrix test ports may not be available for measurements
●
certain transmission measurements may not be possible
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 submatrices' test
ports can be established and hence reflection and transmission measurements are
impossible.
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 5-20: 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 5-21: Partially connected submatrices
Optional Extensions and Accessories
