LESSON 2
LOCATE FIELD WIRE TROUBLE
TASK
Locate field wire trouble.
CONDITIONS
1.
PERFORMANCE.
Given approximately 150 feet of installed field wire
line with faults, telephone set TA-312/PT, BA-30 batteries, gloves, tool
equipment TE-33, FM 24-20 and TM 11-5805-201-12 extracts, tape, a
predetermined site, using simulated tactical scenario narrations and
discussions, and with a qualified OJT monitor's assistance.
2.
PERFORMANCE-ORIENTED.
Given Lesson 2 material, FM 24-20 and TM 11-
5805-201-12 extracts, pencil, paper, and without supervision.
STANDARDS
1.
PERFORMANCE. Correctly locate field wire trouble without error within
one out of two attempts and within 30 minutes under a simulated tactical
scenario environmental condition.
2.
PERFORMANCE-ORIENTED. Demonstrate competency of the task, skills, and
knowledge by correctly responding to 80 percent of the multiple-choice test
covering troubleshooting field wire WD-1( )/TT.
REFERENCES
FM 24-20 and TM 11-5805-201-12 extracts with all changes.
Learning Event 1:
LOCALIZE TROUBLE.
1.
After a fault has been detected and identified, the faulty segment of
line must be isolated.
Thus, faults on field wire lines usually must be
located by fault location tests.
The principles of line testing are
basically the same regardless of the type of line to be tested. The purpose
of testing is--
a. To determine the condition of a line or circuit.
b. To detect any existing trouble, and to determine the nature of the
fault.
c. To locate the fault and clear it with as little interruption to
service as possible.
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