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Receiver
Mode
Allows the operator to change frequencies. By depress-
ing this key, the receiver will cycle through the active and
the passive frequencies. The selected mode is shown on
the left side of the display screen.
Power On/Off
Turns the receiver on or off.
Light
Lights up the display for usage in dark areas. When the
display is backlit, LIGHT is shown on the bottom left hand
side of the display screen.
Bat
Press and hold this pad to check the battery level of the
receiver. A bar graph on the right side of the display
will give status of the batteries. When the graph shows
1 bar, it is time to replace the batteries. Additionally, as
the operator uses the Receiver, if the batteries get low,
REPLACE BATTERIES will appear in the lower area of the
Display screen.
Vol(up)/Vol(down)
Increases or decreases the volume of the speaker.
Depth
After determining the centerline of the utility, set the blade
of the receiver on the ground, press and hold this pad to
get the depth to the center of the target.
TW-8800 RECEIVER
The receiver includes
the control keys and
a large
display screen.
Controls
Tracing
After locating the point(s) where the signal strength
was the highest, return to that spot and start tracing
your utility. This is where the LEFT/RIGHT indicator is very
helpful. Swing the Receiver from left to right and listen
for the change of tone. When the target is to the RIGHT
of the receiver, the signal is pulsed tone. As the receiver
gets closer to the target, the pitch gets higher. When
the target is to the LEFT of the receiver, the signal is a
continuous tone. As the receiver gets close to the tar-
get, the pitch also becomes higher. When the receiver
is over the target, OVER TARGET is showed on the dis-
play screen, and the tone is at its highest peak sound.
Depth Measuring
When an OVER TARGET response is displayed, position
the blade of the receiver directly over the utility. Place
the tip on the ground, hold the
receiver steady,
and press and hold the DEPTH pad. Depth will be mea-
sured to the center of the utility.
OPERATING INSTRUCTIONS
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