Amprobe AT-7000 - Manual (Page 20)

16
3.2 Tracing De-energized Wires
TIP SENSOR
De-energized TIP SENSOR mode is used for general
wire tracing, pinpointing wires in bundles, tracing
in tight corners and confined spaces such as
junction boxes or inside enclosures.
Connecting transmitter test leads
1. Connect green and red test leads to the
transmitter (polarity does not matter)
2. Connect red lead to de-energized hot wire
(on the load side of the system).
In de-energized mode the signal will be
injected to ALL branches of the circuit, not
just between the outlet and the breaker as in
energized modes.
3. Connect green wire to a separate ground
(metal building structure, metal water pipe,
or ground wire on a separate circuit).
Set up the AT-7000-T Transmitter:
1. Press ON/OFF key to turn on the transmitter.
2. The red LED voltage status should indicator should be off, indicating that the circuit is
de-energized. If LED is on, disconnect power to the circuit.
3. Select HIGH signal mode for most applications. Screen will appear as shown in Figure
3.2b
Note: The LOW signal precision mode can be used to limit the signal level generated by the
transmitter in order to more precisely pinpoint wire location. A lower signal level reduces
coupling to neighboring wires and metal objects and helps to avoid misreading due to
ghost signals. A lower signal also helps to prevent oversaturating the receiver with a
strong signal that covers a large area. The LOW mode function is rarely used, only for most
demanding precise wire tracing applications.
HIGH
0V DC
33 KHZ
Figure 3.2b
3. main aPPLications - tiP sensor (de-energized)
TIP SENSOR
Figure 3.2a
Proper connection with separate ground