VESALA TraceMeter TM30, Руководство пользователя

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18 TM30 User Manual v. X1.0
7.3.3 Electric cables which can’t be galvanically connected
Task: The route and end of a cable from a cabinet needs to be located
without disconnecting the cable or opening the cabinet.
-
Connect transmitter with a clamp-on transformer ( PM50 or PM100) to the
cable at a place where the cable is visible. Note that using a clamp-on
transformer always requires that the near end of the cable is grounded.
-
If cable is reachable, choose
Near cable
mode with receiver. If the other end of
the cable is grounded, trace the right cable by finding strongest signal, which
has a sharp minimum right above it. Even
Cable route mode may work,
enabling tracing up to two metres distance.
-
If cable’s wires are disconnected at the other end, usually no minimum can be
detected but tracing is possible by following the strongest signal with
Near
cable mode or Open wires mode.
7.4 Tracing special cables
7.4.1 Coaxial cables and other shielded cables
Task: Route of a coaxial cable needs to be traced on cable shelves.
-
Connect one transmitter output terminal to the coaxial cable shield. Make sure
that the shield is not grounded at this end (other end may be grounded or not)
-
Connect transmitter second output terminal to a grounding, e.g. to a nearby wall
socket protective earth (PE) contact.
-
If cable is reachable, choose Near cable mode with receiver. If the other of the
cable is grounded, trace the right cable by finding strongest signal, which has a
sharp minimum. If cable’s wires are disconnected at the other end, usually no
minimum can be detected but tracing is possible by following the strongest
signal with
Near cable mode or Open wires mode.
-
If the other end of the cable is grounded, even
Cable route
mode may work,
enabling tracing up to two metres distance by following the signal minimum in
the receiver nose direction.