Subsite 910R - Recognize Common Signal Problems

44 910R/950R/950T/970T - OPERATION
RECOGNIZE COMMON SIGNAL PROBLEMS
44 910R/950R/950T/970T - OPERATION
RECOGNIZE COMMON SIGNAL PROBLEMS
RECOGNIZE COMMON SIGNAL PROBLEMS
Distortions in the electromagnetic field around a line can affect
location and depth accuracy. Tees, bends, parallel lines, crossing
lines, or large metallic objects can distort signals.
NOTICE: If target depth and location are critical, confirm by hand-
digging or vacuum excavation.
Learn to recognize the following kinds of distortion:
Shadows
Shadows, also called blind spots, often happen when a metallic
object partially obstructs signal, or a signal from a parallel line
interferes with target signal.
False Signals
False signals describe situations where the receiver indicates a
line location where there is no line. False signals often happen
when a line tees or bends, runs parallel to the target line, or
crosses the target line.
IMPORTANT: Generally, the receiver shows less distortion in twin
peak antenna configuration.
RECOGNIZE COMMON SIGNAL PROBLEMS
Distortions in the electromagnetic field around a line can affect
location and depth accuracy. Tees, bends, parallel lines, crossing
lines, or large metallic objects can distort signals.
NOTICE: If target depth and location are critical, confirm by hand-
digging or vacuum excavation.
Learn to recognize the following kinds of distortion:
Shadows
Shadows, also called blind spots, often happen when a metallic
object partially obstructs signal, or a signal from a parallel line
interferes with target signal.
False Signals
False signals describe situations where the receiver indicates a
line location where there is no line. False signals often happen
when a line tees or bends, runs parallel to the target line, or
crosses the target line.
IMPORTANT: Generally, the receiver shows less distortion in twin
peak antenna configuration.