Rohde & Schwarz ESH3-Z6, Manual

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Service
R&S
®
ESH3-Z6
16 Manual 1178.9932.02 ─ 01
5. Connect the BNC short termination to the BNC adapter installed on X1.
6. Connect Port 1 to the X2 connector.
VNA
Port 1 Port 2
50
Short
R&S ESH3-Z6
X2.1
X2.2 X1.1
X1.2
X3
Figure 5-4: Test setup for impedance measurement
Performing the test
The test is a S11 measurement on the vector network analyzer.
1. Standardize Port 1 by OSM method.
2. Test the impedance of the artificial network conductor in the frequency range from
100 kHz to 200 MHz.
According to CISPR 25, edition 4: 2016, the deviation from the impedance shown
in
Table 5-1 must be
≤±
20 % in frequency range 100 kHz to 100 MHz.
Table 5-1: Impedance limits
Frequency Impedance Low limit Upper limit
0.10 MHz 3.20
Ω
2.56
Ω
3.84
Ω
0.15 MHz 4.79
Ω
3.83
Ω
5.75
Ω
0.20 MHz 6.37
Ω
5.09
Ω
7.64
Ω
0.30 MHz 9.45
Ω
7.56
Ω
11.34
Ω
0.40 MHz 12.41
Ω
9.93
Ω
14.89
Ω
0.50 MHz 15.23
Ω
12.18
Ω
18.27
Ω
0.70 MHz 20.34
Ω
16.27
Ω
24.41
Ω
1.00 MHz 26.64
Ω
21.31
Ω
31.97
Ω
1.50 MHz 33.88
Ω
27.10
Ω
40.65
Ω
2.00 MHz 38.26
Ω
30.61
Ω
45.92
Ω
2.50 MHz 40.97
Ω
32.77
Ω
49.16
Ω
3.00 MHz 42.70
Ω
34.16
Ω
51.24
Ω
4.00 MHz 44.65
Ω
35.72
Ω
53.59
Ω
5.00 MHz 45.66
Ω
36.53
Ω
54.79
Ω
7.00 MHz 46.59
Ω
37.27
Ω
55.90
Ω
Perfomance Test