Amprobe AT-7000 User Manual download pdf (Page 30)

4.10 No Access to Bare Conductors (Signal Clamp)

The clamp accessory is used for applications where there is no access to the bare conductor

to connect transmitter test leads. When clamp is connected to the transmitter, it enables the

AT-7000-T to induce signal to energized or de-energized wire through the insulation. The

signal will travel through the wire both directions and it will affect all the branches. This

method is safe to use for any sensitive electronic equipment.

Connect the clamp

1. Connect the SC-7000 test leads to the

terminals of the transmitter

(polarity does not matter).

2. Clamp the SC-7000 Signal Clamp around the

conductor. To increase the signal strength

wind a few turns of conductor wire around

the clamp if possible.

Set up the AT-7000-T Transmitter:

1. Press ON/OFF key to turn on the transmitter. The red LED voltage status indicator should

be OFF when clamp is connected and when working with either energized or de-

energized systems.

2. Press HIGH signal mode for 2 seconds to select the clamp mode on the transmitter. The

clamp mode generates a boosted 6kHz signal in order to provide superior tracing results.

The screen on the Transmitter should appear as in Figure 4.10a.

Using AT-7000-R Receiver

1. Press ‘ON/OFF’ push button to turn on the receiver and wait for the home screen (boot

up time is around 30 seconds).

2. Select Energized TIP SENSOR mode by using the directional arrows to highlight this

operating mode and pressing the yellow “ENTER” button.

3. Hold the receiver with the Tip Sensor facing the target area.

4. Scan target area with Tip Sensor to find highest signal level. While tracing, periodically

adjust sensitivity to keep signal strength near 75. Increase or decrease sensitivity by

pressing +or – on the keypad.

5. Receiver Positioning: For best results, align groove on tip sensor with wire direction as

shown. Signal may be lost if not properly aligned.

6. To verify wire direction, periodically rotate receiver 90 degrees. Signal strength will be

highest when wire is aligned with Tip Sensor groove.

4. SPECIAL APPLICATIONS

Figure 4.10a

Transmitter in CLAMP mode

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Amprobe AT-7000 User Manual Page 30