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R&S ESH2-Z3
Test point
ESH2-Z3
M. O.
Ground lead
Ground
Attenuater ESH2Z31
ESH2-Z3
M. O.
Fig. 1
Determination of interference source impedance Z s
10
100
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-10
-20
-30
-40
dB
Measurement error:
Reduction of indication:
Fig. 2
Reduction of indication A and measurement error B as function of interference source
impedance Z s
1156.6124.32
Measuring
Receiver
Measuring
Receiver
1000
10000
Measurement error
Reduction of indication
+
Z
1500
s
=
A
20
log
+
Z
3000
s
(
A
/
20
)
3000
10
1500
=
Z
s
(
A
/
20
)
1
10
| Zs | /
100000
k
in
dB
(
) 1
in
(
) 2
7
Measurement
E-1
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