Subsite 910R - Page 54

54 910R/950R/950T/970T - OPERATION
LOCATE LINE: ACTIVE LOCATION
54 910R/950R/950T/970T - OPERATION
LOCATE LINE: ACTIVE LOCATION
Special Situations
Situation What to try
Signal is lost. Walk in a circle to detect a tee or
bend in the line.
Signal varies from low to
high and is unstable.
Mark as a hand-dig area.
You are near a power line
and are receiving
interference such as
unstable depth readings,
blank display, etc.
Sweep the area in 50 Hz or 60 Hz
power mode. If receiver gives a
strong signal response, a power
line is interfering with transmitter
signal.
Receiver does not function
properly.
Receiver gain could be set too
high. Lower gain to locate the line.
Target line has
connections to other lines.
Disconnect target line from other
lines or use induction clamp to
focus signal on target line.
Signal is transferring to
other lines.
• Lower the frequency.
• Lower the power level.
• Use direct connection, if
possible, or use induction
clamp.
• Move the ground stake away
from the target line and away
from other buried lines.
• Apply signal at the point where
the target line is farthest from
the other lines.
Four dashes appear on
the display and signal
strength and gain bars
flash.
Transmitter power level is set too
high and/or line is too shallow for
depth estimate. Select lowest
usable transmitter power level or
raise receiver high enough to
return display to normal operation.
Special Situations
Situation What to try
Signal is lost. Walk in a circle to detect a tee or
bend in the line.
Signal varies from low to
high and is unstable.
Mark as a hand-dig area.
You are near a power line
and are receiving
interference such as
unstable depth readings,
blank display, etc.
Sweep the area in 50 Hz or 60 Hz
power mode. If receiver gives a
strong signal response, a power
line is interfering with transmitter
signal.
Receiver does not function
properly.
Receiver gain could be set too
high. Lower gain to locate the line.
Target line has
connections to other lines.
Disconnect target line from other
lines or use induction clamp to
focus signal on target line.
Signal is transferring to
other lines.
• Lower the frequency.
• Lower the power level.
• Use direct connection, if
possible, or use induction
clamp.
• Move the ground stake away
from the target line and away
from other buried lines.
• Apply signal at the point where
the target line is farthest from
the other lines.
Four dashes appear on
the display and signal
strength and gain bars
flash.
Transmitter power level is set too
high and/or line is too shallow for
depth estimate. Select lowest
usable transmitter power level or
raise receiver high enough to
return display to normal operation.