Allied Analogic, Inc.
4
Copyright © 2018
SMPLX 3T
SMPLX 3T applies tone in the same manner as the
SMPLX 1T mode.
This mode includes a digital meter that displays
the DC voltage between the TIP and RING as well
as the AC voltages between the TIP and Ground
and the RING and Ground.
The voltage, T-R, will decrease if a short is applied
to the pair at the far-end to confirm the pair
identity. Audible beeps are heard and a visual
indication is displayed between
T
and
R
if the
voltage drop indicates a short or ground on one
side.
In the case of a pair with one side open, the good
side of the pair can be grounded and the TriTone
Transmitter 3 will provide a visual and audible
confirmation.
TRI-PLEX
Triplex tone is a unique tone mode that
minimizes cross-coupled tone to adjacent pairs.
Triplex mode applies tone to the pair Tip to
Ground, Ring to Ground, and Tip to Ring
simultaneously. This tone mode can be heard
even with one side open or when there are
missing bonds or grounds. This tone mode is
useful any time high-levels of tone is coupled to
adjacent pairs, including wet sections.
Begin by using either of the SMPLX modes to
identify the most likely pairs. Then use the TRI-
PLEX mode to identify and confirm the actual
pair.
Since cross-coupling is minimized, the amplifier
probe must be very close or touching the pair to
hear the tone. To confirm the correct pair is found, place the probe tip between
the Tip and Ring wires. There should be a significant increase in tone on only the
correct pair.
AALogic manufactures a DAP-125 probe compatible with the D-105 Cable Test Set
and other AALogic products. This probe is a differential probe and is especially
designed to enhance pair location when using TRI-PLEX tone.