Rohde & Schwarz ESH2-Z3 - Page 14

R&S ESH2-Z3 Measurement
1156.6124.32 7 E-1
M. O.
Measuring
Receiver
E
SH2-Z3
Ground
Ground lead
Test point
M. O.
Measuring
R
eceiver
ESH2-Z3
A
ttenuater ESH2Z31
Fig. 1 Determination of interference source impedance Z
s
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
10 100 1000 10000 100000
Measurement error
Reduction of indication
| Zs | /
k
-40
-30
-20
-10
dB
Measurement error:
Reduction of indication:
)2(in
101
1500103000
Z
)1(dBin
3000Z
1500Z
log20A
)20/A(
)20/A(
s
s
s



=
+
+
=
Fig. 2 Reduction of indication A and measurement error B as function of interference source
impedance Z
s