IPC-TM-650 EN 2022 试验方法1.pdf - 第483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…

100%1 / 824
Figure 5-11 Calibration for Stored Reference Method
AIRLINE
PROBE
SPD
TDR
INSTRUMENT
std,0
open
PRECISION
RF CABLE
V
check,0
f,std
i,std
MEASUREMENT ZONE
for AIR LINE
t
1,TL
TIME
i,0
IPC-TM-650
Page 14 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
Page 15 of 23
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
Page 16 of 23