Service
R&S
®
ESH3-Z6
20
Manual 1178.9932.02 ─ 01
Performing the test
The test is a S11 measurement on the vector network analyzer.
1. Standardize Port 1 by OSM method.
2. Select VSWR format in dB.
3. Read out the VSWR in the frequency range from 1
MHz to 200
MHz.
Target values:
● 1 MHz to 10 MHz: < -2 dB to < -18 dB (linearily decreasing with logarithm of
frequency)
● 10 MHz to 100 MHz: < -18 dB
● 100 MHz to 200 MHz: < -18 dB to < -15 dB (linearily increasing with logarithm
of frequency)
-18
-15
-2
1
MHz
10
MHz
100
MHz
200
MHz
[dB]
Figure 5-9: Limits for VSWR of X3
5.3
Repair
Although the V-network R&S
ESH3-Z6 has no active components, the DC resistances
of current path X1.1-X2.1 can deteriorate due to overIoading, corrosion or mechanical
deformation.
Faults can be localized and remedied in accordance with
Repair
