FALCON F
+ USER MANUAL
DCI DigiGuide 10.31.2022
DIGITAL CONTROL, INC 4
An
A
on the screen can indicate signal Attenuation due to the presence of
excessive interference, which can make depth readings inaccurate.
Attenuation is normal in shallow depths less than 2.4 m. If the signal
strength is also
fl
ashing; this indicates extreme interference. Depth and
locate points may be compromised and the locator will not calibrate.
Interference is classi
fi
ed as either active (generating electro-magnetic
signals) or passive (material that can conduct or block electro-magnetic
signals). Sources of interference may include:
Active
Tra
ffi
c signal loops
Buried dog fences
Cathodic protection
Radio communications
Security systems
Microwave towers
Power, phone,
fi
ber-trace and cable TV lines
Passive
Metal pipes
Rebar
Trench plates
Chain-link fences
Vehicles
Saltwater/salt domes
Conductive earth, such as iron ore
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