Amprobe AT-7000 User Manual download pdf (Page 12)

2.2 AT-7000-T Transmitter

The AT-7000-T Transmitter works on energized and de-energized circuits up to 600V AC/DC

in Category I-IV electrical environments.

The transmitter will measure the line voltage and display it on the transmitter’s color

TFT LCD display screen. Based on detected voltage it will automatically switch to either

energized mode (30 to 600V AC/DC) or de-energized mode (0 to 30V AC/DC). The energized

mode uses a lower transmission frequency (6kHz) than de-energized mode (33 kHz) to

reduce signal coupling with nearby metallic objects and improve results. If the circuit is

energized the red LED in the upper left corner of the AT-7000-T transmitter will light.

IMPORTANT! Note that the red LED light will turn on when connected to an energized

circuit. Select the correct energized or de-energized mode on the AT-7000-R receiver when

choosing your tracing mode.

Energized mode: In energized mode the transmitter draws very low current from the

energized circuit and generates a 6.25 kHz signal. This is very important feature of the

AT-7000-T, since drawing current does not inject any signal that would harm sensitive

equipment connected to the circuit. The signal is also generated in a direct path between

the transmitter and the power source, thus NOT placing a signal onto any branches enabling

wiring tracing directly back to the breaker panel. Please note that due to this feature, the

transmitter has to be connected on the load side of the circuit.

De-energized mode: In de-energized mode the transmitter injects a 32.8 kHz signal onto the

circuit. In this mode, since the signal is injected, it will travel through all the circuit branches.

It is a high frequency, very low energy signal that will not harm any sensitive equipment

RED LED VOLTAGE INDICATOR

Indicates the transmitter mode

1. Red: Energized circuit mode

2. Amber: Overload

3. OFF: De-energized circuit

mode

LOW/PRECISION MODE

For precision applications

ON / OFF BUTTON

COLOR TFT LCD DISPLAY

TEST LEADS CONNECTION JACKS

HIGH/NORMAL MODE

Used for most applications

BATTERY COMPARTMENT

(Back side)

RUBBER OVERMOLDED

ENCLOSURE

Figure 2: Overview of AT-7000-T Transmitter

2. KIT COMPONENTS

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Amprobe AT-7000 User Manual Page 12