McLaughlin Vision GX2 - Page 29

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The Current index helps to confirm the line's identity.
If an adjacent line is running parallel with the object line.
If two lines are crossing:
Locating T connection
Þ Splicing/jointing points of Power cable, Telephone cable, Gas pipe, Water pipe, or Sewer pipe.
0.5m
Depth: 1.50 m
Current index: 2.6
mA
Line: A
Line: B
1.5m
0.5m
Line: A
Line: B
Line-A with a 2.6 mA current
index is the object line.
Even though signal is smaller.
The line with the highest current index is the object line into which the signal is being broadcast.
ÞLine A with a 2.0 mA current index is the trace object.
Depth: 1.50 m
Current index
: 1.5 mA
Depth: 1.50 m
Current index:
0.5
mA
Depth: 1.00 m
Current index: 1.0 mA
Depth: 0.50 m
Current index:
0.7 mA
A
C
B
Main line-A with a 1.5 mA current index
Line-B: Index value 1.0 mA Þ Main line
Line-C: Index value 0.5 mA Þ Branch line
Depth: 1.50m
Current index:
2.0 mA
Depth: 0.50m
Current index:
1.0
mA
1.5m
Line: A
Line: B
Receiving
sensitivity