Determining Depth; Locating The End Of An Open Cable; Locating Underground Cable Splices - Textron Tempo 501 Guia De Inicio Rapido

indication and the tone from the speaker or the headset.
As progress is made down the cable path, gradual increases in the receiver
gain control will be necessary to maintain reception.
The receiver control knob should be adjusted so that the meter needle is at
approximately 1/2 scale to insure that any increase or decrease in signal can
be detected and accuracy maintained.
Return to the transmitter and increase the output level as needed for the
distance and depth required.
F. Determining Depth
Mark the ground directly over the path (See Fig. 1) Hold the receiver at a 45-
degree angle close to the ground. (See Fig. 2) Maintain this angle and slowly
move the receiver away from the path opposite the handle. (See Fig. 3) The
tone will decrease to a minimum and then increase again. Mark the spot where
the signal is at its minimum. The depth of the cable will be the distance between
the two points marked.
G. Locating the End of an Open Cable
Follow the peak receiver indications as outlined in Section 2D. Reception of
the signal will diminish rapidly and be lost once past the end of the cable. (See
Fig. 4)
NOTE: These results may not be achieved if the faulted cable occupies a
common trench that is congested with other wires or cables.
H. Locating Underground Cable Splices
Locate and mark cable path as described in Section 2E of this practice. Place
501 receiver antenna parallel to cable path. (See Fig. 5)
Keeping the receiver antenna parallel with the cable proceed down the cable
path. Watch and listen for increases in signal (peaks). (See Fig. 6)
When the increase in signal is seen, check to see if it continues to the left or
right of the cable path. A signal that continues out to either side of the cable
path is a drop wire or branch cable. Mark these paths. (See Figures 7 & 8)
A peak in signal without a continued path indicates the presence of a splice.
Mark this point. (See Fig. 6)
A branch splice will peak over the cable path, then a peak can be followed over
the path of the branch cable. (See Fig. 7) Note: The same signal can be
produced by a drop wire running parallel to the cable from a splice at the point
it turns 90° from the cable path.
Fig.6 - Signal Changes Over Splice
Fig.7 - Signal Over Branch Splice
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