Limitations of All Scan Mode
All Scan Mode has exactly the same limitations as those listed for the Power and Radio Modes:
l Street lighting cables when the lights are switched off, supply cables to buildings or plant using little or no electricity,
pot-ended or capped cables, well balanced high voltage cables and direct current cables may all be missed on the All Scan Mode.
l A strong All Scan signal present on one service may mask a weaker All Scan signal present on an adjacent service.
l It is not normally possible to determine what the service is in All Scan Mode, only its position.
l All Scan signals do not favour one utility over another.
l The depth of the buried service cannot be judged by the strength of the All Scan signal alone.
l Normally it is only possible to detect All Scan signals present on services up to 2 m (6’6”) deep.
l A short service may not have enough signal to be detected.
Locator Operating Modes: All Scan Mode
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WARNING Using the Power and Radio Modes may be more effective in areas where there are many services
radiating an All Scan signal.