Radiodetection T631 TDR - Eliminating the Length of the Test Lead; Measuring Between Two Features

7.7.1 ELIMINATING THE LENGTH OF THE TEST LEAD
Connect the test lead to the unit. Select 3 m or 6 m range.
Adjust the controls so that the reflection from the end of the test lead is obtained.
Using the LH cursor controls move the LH cursor to the start of the reflection.
Connect the test lead to the cable under test and locate the fault as described in Section 7.6.
NB: The distance to fault is now that from the end of the test lead.
7.7.2 MEASURING BETWEEN TWO FEATURES
Using the LH cursor controls set the LH cursor to the start of the feature on the LH side.
Using the RH cursor controls set the RH cursor to the start of the feature on the RH side.
The RH cursor is then live and becomes a solid line with the LH cursor a broken line.
The distance read out is the distance between the
two cursors as shown.
In the ZOOM mode,if a cursor is not on the screen
it cannot be moved. Therefore if a measurement
T631 OPERATING MANUAL 29
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