C-LOGIC 3900 Instruction Manual page 28

WARNING
For safety, please cut off the supply to the entire building.
Suggestions
1. The emitter ground must be properly grounded and must be at a certain
distance from the pipe to be detected. If the distance is too small, the signals
and the circuit cannot be precisely located.
2. Adjust the transmitting power of the emitter to suit different detection radii.
3. In the process of detecting the circuit, the stronger the signal displayed on
the Nixie tube of the detector, the closer the circuit would be detected by the
instrument.
4. Select manual mode on the receiver and the appropriate receive sensitivity
to locate the circuit precisely.
3.1.9 Tracing a buried circuit.
Preconditions:
* The circuit must not be active.
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Cable locator