BASIC OPERATIONS
70
CHANGE OF STRUCTURES AS A RESULT OF EMERGENCE OF DIFFERENT DEFECTS
Break of one of wires of the "twisted pair" type cable
Cable without defects
Cable with defects
1. The response levels in the "linked" pairs are not the same (in a pair of 1-2 this level is higher
than in the other three "linked" pairs).
2. Distances to heterogeneities with maximum response levels in "non-linked" pairs are not the
same. In all combinations with wire #1, the distance to the heterogeneity is from 19.8 to 21.6
meters.
3. The response levels in the wires of different pairs are different. So in combination with wire
#1, the levels are higher.
CONCLUSION:
the reference structure is broken. The probable cause of the structural violation
is a wire break #1 at a distance of 20 meters from the beginning of the cable.
Parallel connection to the "twisted pair" type cable
Cable without defects
Cable with defect
1. The response levels in "twisted" pairs are not the same (in a pair of 1-2 this level is higher
than in the other three twisted pairs).
2. In the pair 1-2, heterogeneity was detected at a distance much smaller than in the other
"linked" pairs
3. Distances to heterogeneities with maximum response levels in "non-linked" pairs are not the
same. In all combinations with wires #1 and #2, the distance to the heterogeneity is less than
the distance to the end of the cable in the remaining "non-linked" pairs.
4. The response levels in "non-linked" pairs are different. In combination with wires #1 and #2,
these levels are lower.
