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Figure 4-7: Depth Estimation Allowing for Uneven Ground
4.7 Using the Carrying Handle for Blind Searching, Ground Surveys, and Metal Mass Location
To conduct a blind search, a ground survey, or to locate an underground metal mass, the 480B Transmitter
and Receiver must be mounted on a carrying handle (Part# 200766). The handle positions the Receiver and
the Transmitter in correct relation to each other.
Mounting the 480B Transmitter and Receiver to the Carrying Handle
1 Assemble the Carrying Handle as shown in Figure 4-8. Do not insert the end pieces beyond the stop pins.
Secure the screws on the center section.
Figure 4-8: Carrying Handle Assembly
2 Mount the 480B Transmitter onto the Carrying Handle by placing the single screw-end of the handle into
the Transmitter and securing it to the Transmitter with the handle screw. See Figure 4-9, Step 1.
3 Place the mounted Transmitter on the ground as shown and attach the 480B Receiver to the handle,
screwing the two handle screws into the two threaded bushings on the Receiver. The Receiver should be
perpendicular to the Transmitter as shown in Figure 4-9, Step 2.
