Greenlee 77M-G Instruction Manual page 8

Sending Tone
With the test set in the TONE position, connect the modular
plug or the red/black leads to the subject wire(s). An internal
slide switch (accessible from the outside using a slender tool)
allows the selection of either a fast or slow warble tone output
(Figure 3).
With multiple signal connection methods, experiment to find the
methods that work best with your applications.
Optional connections include:
• Connect the modular plug to a six-position jack to apply signal
to the center two pins (USOC pair 1 only).
• Connect the red and black leads to the tip and ring conductors
of a twisted pair circuit.
• For high twist wires (e.g. LAN cat-5/6) connect the leads to
conductors of two different pairs. Example: red to tip of pair 1,
black to tip of pair 2.
• Connect the red lead to the subject wire and the black lead to
an independent earth ground.
• Connect the red lead to the shield and the black lead to
ground of a shielded or coaxial cable.
• Connect the red lead to the shield and black lead to center
conductor of a coaxial cable.
Trace the wire(s) with any Greenlee tone probe (Figure 4). When
pair tracing, in order to confirm that the correct pair has been
Selection Switch Access Slot
9Vdc
PP3
IEC-6LR61
ANSI-1064A
Figure 3.
100V MAX
8