12
TS90 Cable Fault Finder
Users Guide
Applications
See Figure 3.
The tester locates opens, short circuits, and crosses in any
two metallic conductors (twisted, untwisted, coax, copper,
aluminum, and steel).
It identifies conductors using the SmartTone feature and an
inductive probe (not included) (see Figure 2). Tone can be
sent between two technicians to ID multiple pairs. Because
the tester beeps when it detects a short circuit, it also serves
as a continuity tester.
Multi-Wire Environment
When testing wires in a multi-wire environment, such as 4
wire telephone cable, 8 wire CAT-5 cable, 12-2 with ground
ac wire, or several THHN wires inside a conduit, a short could
exist between any number of the conductors, including a
shield or the conduit. To detect the short, you must connect
the tester to the wires that are shorted. This means that to
fully test a multi-wire cable, you must check every wire
against every other wire including the shields and conduits.
While a quick way to test many conductors against conduit
or shield length is to connect all the conductors to one clip
lead and the shield to the other lead, this will reduce the
impedance of the cable, and measurements may fall below
the tester’s range. It is more reliable to test the wires
individually.
