TM 11-6625-2398-15-2
method of determining the condition of a cable:
conductor, one at a time, while performing the following
step for each connection.
a. Connect a resistor of known value, 50,000 ohms
b. Connect the second ohmmeter lead to every
or more, between one end of the suspected cable
other conductor in the cable (one conductor at a time).
conductor and ground.
c. If the meter indicates zero, short exists between
b. Connect the ohmmeter leads between the
the two conductors being measured.
conductor and ground at the other end of the cable.
d. If the meter indicates less than infinite but more
c. If the meter indicates approximately 50,000
than zero, the two conductors have a dc leakage path
ohms, the conductor has continuity.
between them.
d. If the meter indicates infinite resistance, the
e. If the meter indicates infinite, the two conductors
conductor is open.
are not shorted.
e. If the meter indicates zero resistance, the
conductor is shorted to ground.
8-5. Continuity Cable Check
When checking for continuity, the ohmmeter leads may
f. If the meter indicates much less than 50,000
not be long enough to be connected to both ends of the
ohms, but not necessarily zero, the conductor has a dc
cable. The following procedure is given as a convenient
leakage path to ground.
Change 1 8-2
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