IPC-TM-650 EN 2022 试验方法1.pdf - 第458页

Figure 5-12 TDR Measurement of Tr ansmission Lin e PROBE SPD TDR INSTRUMENT C,ave PRECISION RF CABLE V check TRANSMISSION LINE UNDER TEST MEASUREMENT ZONE for TRANSMISSION LINE UNDER TEST f,TL i,TL TIME r,1 IPC-TM-650 Pa…

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Figure 5-9 Calibration of Incident Step Amplitude
t
1,TL
TIME
i,0
AIRLINE
PROBE
SPD
TDR
INSTRUMENT
std,0
open
PRECISION
RF CABLE
i,std
f,std
MEASUREMENT ZONE
for AIR LINE
Figure 5-10 TDR Measurement of Transmission Line
MEASUREMENT ZONE
for TRANSMISSION LINE UNDER TEST
TRANSMISSION LINE UNDER TEST
AIRLINE
PROBE
PRECISION
RF CABLE
MEASUREMENT ZONE
for AIR LINE
i,std
f,std
TDR
INSTRUMENT
SPD
TIME
i,TL
f,TL
IPC-TM-650
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Figure 5-12 TDR Measurement of Transmission Line
PROBE
SPD
TDR
INSTRUMENT
C,ave
PRECISION
RF CABLE
V
check
TRANSMISSION LINE UNDER TEST
MEASUREMENT ZONE
for TRANSMISSION
LINE UNDER TEST
f,TL
i,TL
TIME
r,1
IPC-TM-650
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Figure 5-13 Differential TDR Waveform
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
Time
Signal (V)
Ch1
Ch2
Transmission Line
Measurement Zone
IPC-TM-650
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