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Techniques
To improve on the accuracy of the measurement, numerous techniques can be used, depending on the situation encountered.
Not every situation can be described, but the following points are effective and the most common and easily implemented
methods.
Test the cable from both ends
When fault finding on a cable it is good practice to take measurements from both ends, particularly in the case of open circuit
faults, when the true end of the cable is not visible. If the measurement is made from both ends, then the combined answer
should equal the expected length of the cable. Even when the true end of the cable is visible on the display, the reflections after
the fault may be too obscure to analyze clearly. In this case, measurement from both ends yields a clearer picture as well as
improved accuracy. It is also good practice to follow the cable route with a cable tracer, as not all cable runs will be straight. It
can save a great deal of time if the exact route of the cable is known as faults are often found at these points and can be
accredited to third party intervention.
Care and Maintenance
Other than replacing the batteries, the instrument has no user serviceable parts. In case of failure it should be returned to your
supplier or an approved Megger repair agent.
Cleaning the instrument should only be done by wiping with a clean cloth dampened with soapy water or Isopropyl Alcohol
(IPA).
18


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