IPC-TM-650 EN 2022 试验方法.pdf - 第622页

IPC-2-5-30-2 Figure 2 Balanced Attenuation Equipment Setup T racking Generator Spectrum Analyzer Cable Matching T ransformers 31 m Coaxial Cab le Coaxial Cab le IPC-TM-650 Number 2.5.30 Subject Balanced and Unbalanced Ca…

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IPC-2-5-30-1
Figure
1 Resistive Matching Network for Unbalanced Cables
F
or Z System Z Cable:
Z System
R
1
R
2
F
or Z System Z Cable:
Z System
Z Cab
le
R
1
R
2
R =
1
Z
(Z - Z )
C
C
S
R =
Z
2
(Z - Z )
C
S
S
Z
S
R =
1
Z
(Z - Z )
C
R =
Z
2
(Z - Z )
C
S
Z
S
Z Cab
le
S
S
C
IPC-TM-650
Number
2.5.30
Subject
Balanced
and Unbalanced Cable Attenuation Measurements
Date
12/87
Revision
P
age2of4
电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
IPC-2-5-30-2
Figure
2 Balanced Attenuation Equipment Setup
T
racking Generator
Spectrum Analyzer
Cable
Matching Transformers
31 m
Coaxial Cab
le
Coaxial Cab
le
IPC-TM-650
Number
2.5.30
Subject
Balanced
and Unbalanced Cable Attenuation Measurements
Date
12/87
Revision
P
age3of4
电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
IPC-2-5-30-3
Figure
3 Unbalanced Attenuation Equipment Setup
T
racking Generator
Spectrum Analyzer
Coaxial Cable
Coaxial Cab
le
R
1
R
2
R
1
R
2
31 m
Cab
le
Resistor Matc
hing Networks
IPC-TM-650
Number
2.5.30
Subject
Balanced
and Unbalanced Cable Attenuation Measurements
Date
12/87
Revision
P
age4of4
电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ