technoac TDR-TA3.3T, Руководство пользователя

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Cable fault locator
TDR-TA3.3T
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6.7.4 The determination of distance to a parallel tap
The irregularity connected with the cable taps is also extended. By the waveform
view the tap reminds of cable clogging. The difference is that the tap looks like uniform
section. To determine the distance to tap point it is necessary to set the cursor to the
beginning of irregularity. If the tap length is longer that the rest part of the cable, the pulse
reflected from the end of cable might completely disappear. The reflected pulse that by its
shape indicates the availability of a parallel tap in the cable line is to be observed in the
cursor position 2.
Picture 6-4 A parallel tap
6.8 Set of a distance reference point
To set the zero distance on the random point of the waveform it is necessary to:

set the cursor on the random point of the waveform with the buttons
« » and« »;

press the button « ». At pressing the button « » the symbol « » at the right
part of the display is being inversively selected;
to cancel press the button « » twice.
6.9 Setting of the measurement window (subrange) offset to the beginning of
measurements
Press the
« » button to set the measurement window (subrange) offset to the
beginning of measurements.