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TS90 Cable Fault Finder
Users Guide
Frequently Asked Questions
Q:
How do I calibrate the tester or perform a self test?
A:
There are no adjustments inside the tester, and the
internal coating protects the critical components from
moisture and contaminants. There is nothing to calibrate. A
self test is performed by the tester every time you turn it on.
Since there is no loss of any settings when the tester is off,
there is no penalty to just turning it off and on if you wish to
perform a self test. The tester displays
8.8.8.8.
during the self
test.
Q:
Does it matter which clip lead I connect to which wire in
the cable under test?
A:
Not for any of the testing functions. However, when you
connect the tester to a cable, if you connect the red lead
first, an invalid reading may be displayed until the full
connection is made with both leads. The tester’s TDR
technology requires both leads be connected to the wire
pair or cable in order to determine its length. While using
only one of the leads is useful in tracing cable position with
the injected tone, both leads are required to make valid
length measurements.
Q:
What does the low battery indicator really indicate?
A:
The LED comes on (flashes) when the battery voltage falls
below 4.1 volts, indicating that you should replace the
batteries. While the tester will continue to operate for at
least 1 hour below this voltage, some readings may be less
accurate.
Q:
I tested an orange outdoor 25 foot extension cord and
the display read 19 feet. Is the tester broken?
