technoac TDR-TA3.3T, Руководство пользователя

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Cable fault locator
TDR-TA3.3T
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from the end of a cable. The reflected pulse in the cursor position 1 of a negative polarity
denotes the short circuit in the cable line. There is no reflected pulse from the end of cable.
Picture 6-2 The short circuit
6.7.3 The determination of distance to the
“sodden” part of cable
Picture 6-
3 The “sodden” part of cable
The irregularity connected with the appearance of moisture in the core of cable
refers to extended irregularity. The “sodden” part of cable is characterized with reduced
resistance and a random value of dielectric permittivity of insulation. To evaluate the length
of a “sodden” part of cable it is required to set the cursor to the beginning of a “sodden”
part and then to set the starting point at the end of cable and to calculate the length of a
dry part of cable. The
“sodden” part starts in the cursor position 1 and ends in the cursor
position 2 on the waveform.