Amprobe Europe GmbH AT-2000
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signal on the R2000.
10. Starting from the T2200, trace the conductor. When in the 'SHORT'
mode, be sure to rotate the R2000 while tracing to maintain proper
orientation in case the wire changes direction. The open will be at
the point you begin to lose the signal.
11. Repeat process starting from the other end of the wire to verify the
location of the open.
If you end up tracing the entire length of the wire without locating the
open, you may be experiencing capacitive coupling, or 'signal bleed-off'
onto the adjacent conductors. This condition may be alleviated by: a)
grounding all adjacent conductors; b) minimizing the distance between
the point of connection and the open.
If another conductor is connected to the first conductor somewhere along
its length, the signal will split between them, causing both conductors to
emit half the signal each. The B2024 battery or the B2025 converter can
be used to increase the signal strength.
Finding Ground Faults
A ground fault is a direct connection of the conductor to ground. A typical
ground fault may cause a tripped circuit breaker or a blown fuse (in
contrast to an 'open', which passes no current). In this situation, a battery
can be used as the current source. The battery can be any voltage over
9V, however, higher voltage will be more likely to overcome a high
resistance fault and will produce a stronger signal (several 9V batteries
in series work very well).
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