30
The middle reflection at the 2nd cursor is a partial short
followed by a complete open (end of the cable). The
more severe the fault, the larger the reflection.
Due to attenuation, the reflections caused by each
equally spaced taps are progressively smaller. A larger
reflection (2nd cursor) beyond a smaller reflection may
indicate an unterminated or faulty tap.
Line 1 Pulse = 2 nsec VOP
V Gain = 20 x
VOP = 83%
L1 =22 dBRL
Batt
P r e s s
*
1 5 2 ft
4 6 m
2
1
Line 1 Pulse = 25 nsec VOP
V Gain = 1 x
VOP = 83%
L1=22 dBRL
Batt
P r e s s
*
9 1 ft
2 8 m
2
1
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