LKZ-1500-
LITE ● LKZ-1500 – USER MANUAL
32
4.6.3.3 Indirect 6 dB test method for depth measurement
When the Receiver fails to measure the depth of the utility line or the depth shall be located on the
passive frequencies, you may use the indirect method of
-6 dB
.
Fig. 29 Depth measurement by the -6dB method (
)
Fig. 30 Depth measurement by the -6dB method (
)
Pinpoint the utility axis and store the readings of the input signal strength on the peak scale in dB.
Moving to the left and to the right of the utility axis, find the positions in which the readings will be 6 dB
less (this means that the signal strength is two times less). The distance between these two points will
be equal to double distance from the Receiver to the utility line axis.
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Page 30: ...LKZ 1500 LITE LKZ 1500 USER MANUAL 28 Fig 25 Locating with Compass line...
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