IPC-TM-650 EN 2022 试验方法1.pdf - 第459页
Figure 5-13 Di ff erential TDR Wav eform -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 Time Signal (V) Ch1 Ch2 T ransmission Line Measurement Zone IPC-TM-650 Page 16 of 23
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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Figure 5-15 Measuring Amplitude for Incident Step
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
Signal (V)
Time
Ch1
Ch2
-0.5
-0.6
0.5
0.6
Figure 5-16 Calibration of Transfer Standard
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
Signal (V)
Time
Ch1
Ch2
IPC-TM-650
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