Product Manual

Automatic and Manual Gain

The Rex receiver has the ability to operate in an automatic or manual gain mode. In the

automatic gain mode, the sensitivity of the receiver is adjusted automatically, based

on the strength of the detected signal, to produce a relatively constant and strong

signal strength indication. In the manual gain mode, the user can adjust the sensitivity

up or down to suit different locating scenarios.

Directional Indication

The Rex receiver is equipped with directional indicators (arrows). These visual and

audible indicators help the user locate the pipe or cable by showing which direction

he/she should move in order to get closer to the target. These indicators are not

available in the Sonde mode.

Depth Measurement

The Rex receiver has the ability to measure the approximate depth of the target pipe or

cable being traced. When a depth measurement is made, the receiver must be fully

extended and the bottom tip of the receiver must be touching the ground. Depth

measurements should only be made when the directional indication says that the target

is close and the receiver’s signal strength is maximized (peaked) over the target.

Special considerations are required for the Sonde mode.

Searching for a Sonde

Once in the surroundings of a sonde, it is

important to differentiate whether you are

positioned along the axis of the sonde (the

direction of the pipe) or off to either side. In the

sonde mode, the directional indication is not

functional; the signal strength is the only

indication available.

Rotate the receiver back and forth and move in

the direction that produces the maximum (peak)

signal strength. As the receiver gets closer to the

sonde, the signal strength increases and it will hit

a peak when the receiver is directly over the

sonde. Slowly rotate the receiver to fine tune the

peak signal strength, which will occur when the

plane of the sensors is parallel to the axis of the

sonde. For verification, rotate the receiver 90

degrees and see that it produces a “null" (signal

strength very close to zero), and then counter-

rotate 90 degrees to go back to the original

position.