Triplett Fox & Hound 3 – PN: 3397 User Manual

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General Rules for Effective Tracing:
…. Do what works best. Try both LINE/GROUND and
LINE/LINE tracing (see following text).
…. Separate wires when possible.
…. Move wires away from shielding when possible.
…. Un-terminate wire if necessary.
…. Turn off noise sources to reduce buzzing

OPERATING INSTRUCTIONS:
8: Detailed Product Information

8.1: FOX Details (Refer to Figure 1)
The Function Switch (B) sets the basic operating mode. The
3 positions each have several testing functions associated
with them. The follow text describes these test features in
detail. The Tone Switch (C) selects a HI, LO, or WARBLE
tone. The alligator clips (E) and the modular plug (D) allow
the FOX to be connected to a variety of different wires and
cables. The LED (A) provides indication of line polarity and
continuity.

8.1.1: Telephone Loop Current Powering: Line Powering
On telephone lines, the FOX’s TONE mode can be powered
from “Loop Current”. Loop Current is provided by the Tele-
phone Company (the Central Office…. CO) to power the typi-
cal telephone. When powered by Loop Current, the FOX’s
internal 9 volt battery is not needed. To use this feature,
simply connect the FOX’s alligator clips (E) or modular plug
(D) to the powered line on which the tone is to be sent. The
FOX will not “seize” or “capture” the line of most phone sys-
tems.