Fisher Research Laboratory - TW-770 Digital Line Tracer
The TW-770 reduces pipe and cable tracing to a simple, almost effortless
procedure. Only one knob turns it on and adjusts the volume. That's it.
Just one button to press for a digital readout of depth in inches or centimeters.
It's so simple to learn, operator training is greatly reduced.
As the operator walks the suspected line of the underground pipe or
cable, swinging the receiver left and right, a continuous display of signal
strength is shown both as a digital percentage and in bar-graph form on
the receiver control panel.
In addition, arrows point the operator left and right, and indicate
when the operator is over the target. The audio signal gives a pulsating
sound on the left and continuous on the right. There is a peaksound over
the line and the display reads OVER TARGET. A push of a button gives a
depth reading.
Accessories;
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Headphones, for use in noisy areas
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Coupling clamp, for tracing telephone or electric power lines in service
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Digital accuracy for pipe and cable tracing and depth readout.
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Microprocessor controlled
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Audio and visual response for left-right guidance
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Automatic gain control
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Digital signal strength
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Splash-proof
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Instant target response
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Inductive or conductive tracing
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Easy one-knob operation for on/off and volume adjust
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Pushbutton for depth readout
The complete TW-770 instrument set includes a hard shell carrying case,
or soft padded case, transmitter, receiver and ground plate/ground rod
assembly. The coupling clamp and headphones are accessories and fit into
the TW-770 case.
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