Operation - Megger TDR1000/2 Guía Del Usario

Operation

In the event of no reflections being visible, increase
gain until any reflection can be easily identified.
(If no reflections can be seen, try shorting or earthing
the far end of the cable to ensure that you are
"seeing" the whole length of the cable).
The cursor can also be moved using the LEFT and
RIGHT cursor keys. Move the cursor to the beginning
of the reflection. The distance to the fault can then be
directly read from the display.
NOTE: The distance calculation is performed using
the velocity factor set in the TDR. If this velocity
factor is not correct for the circuit under test, the
displayed distance will be incorrect.
Opposite are shown two typical trace displays. The
top shows an open circuit at 2000m away; the
second a short circuit at 2000m away.
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