Triplett Fox 2 – PN: 3382 - Manual (Page 41)

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permanently….. i.e. a momentary closure in a N.O. circuit
causes the cadence to “latch” to a new speed.
Similarly, an N.C. circuit can be simulated by shorting the
FOX 2’s clips together and keeping them shorted. Then mo-
mentarily, greater than 1 second, un-short and then re-short
the clips. The cadence will change when the clips are re-
shorted. Hence, in a N.C. circuit, in response to a momen-
tary open, the cadence changes permanently….. i.e. a mo-
mentary open in a N.C. circuit causes the cadence to’“latch”
to a new speed.
To use Trip-Latch, go to a location when the wires to the
alarm sensor can be accessed (usually at a junction box or
at the alarm control panel), and temporarily disconnect the
N.O. or N.C. wire(s) from the control panel. Leave the power
to the sensor connected. Connect the clips of the FOX 2 to
the disconnected sensor wire(s), or, on sensors with a com-
mon connection between the power and the contacts, con-
nect one clip of the FOX 2 to the COM and one clip to the
N.O. or N.C. wire. Go to the installed location of the sensor.
If the circuit is N.O., using a Hound or Hound 2, locate FOX
2’s signal near the sensor, and then trip the sensor, noting
whether the cadence of the signal changes. Alternately, if
the situation permits it, use a cordless telephone to listen to
the FOX 2, and trip the sensor, listening for the cadence to
change.
If testing a N.C. sensor, a cordless telephone must be used.