Amprobe AT-4000 Series Advanced-Wire-Tracer - Manual (Page 9)

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anywhere between the T-4000 and the power source. (Line side or
Upstream)- no signal will be present on wiring on the other side of
the transmitter(load side or downstream). For example, a transmitter
connected to a circuit breaker will produce no signal on that circuit. It
will, however, cause a signal to be generated between that panel and
the transformer…and beyond. When connecting to an unenergized
circuit, the live indication on the display will remain ‘OFF’. When the
user starts the transmission, the transmitter injects a combination of
signals onto the conductor. The signal will travel along the conductor
until it ends. There is no difference in the functional mode of the unit
when tracing energized circuit and unenergized circuits. On an open
line, no current will flow, so the injected signal will present itself as a
voltage spike along the wire which is detected by the R-4000CON in
the ‘OPEN’ mode. When the conductor is part of a complete circuit,
the voltage causes a current to flow which produces a signal that is
detected in the ‘SHORT’ mode. The T-4000 contains a 9V battery. A 24V
input jack accepts the B2024 rechargeable battery or the B2025 110V
converter, both use when a very strong signal is necessary.
(Note: When using the battery booster (B2024 or B2025) the unit will
work in ultra high “U-HI” mode only. Remove the battery booster to
return to normal operation.)
A2202 Clamp-on Transmitter Accessory
Enables the T-4000 to induce its signal onto an unenergized or
energized circuit. Plug the A2202 into the T4000 and clamp it around
any conductor in an unenergized circuit, or the hot wire in an
energized circuit. The signal will be induced on top of the 50,60,or
400Hz frequency which may be present. The AT2201 acts like a 1/2
Volt battery when clamped around a conductor. On a complete circuit
this voltage will cause about 80mA of current to flow on top of the
whatever frequency is present.
To increase the signal strength, loop the wire around the clamp a few
times or use the B2024 battery Pack. The A2202 will allow wire tracing
without the need for direct connection. (Note: When using the battery