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
9
WARNING
Using the Power and Radio Modes may be more effective in areas where there are many services
radiating an
All
Scan signal.
