Localizing Acoustically; Working With The Telescopic Pole - Wohler L 200 Manuel D'utilisation

6.4.2

Localizing acoustically

6.5 Marking the position of
the camera head
6.6 Working with the
telescopic pole
Fig. 15: Localizing the camera head
underground
At the same time, the intensity of the acoustic
signal increases as the Locator gets closer to the
transmitter. The pitch of the tones gets higher and
they are repeated in increasingly rapid succes-
sion.
Once the camera head has been localized, it is
possible to mark its position using the yellow lith-
ographic chalk supplied.
Push open the cover of the compartment on
•
the front of the housing (Fig. 1, position 7).
Take out the lithographic chalk.
•
The telescopic pole is a useful assistant when
•
localizing the camera head concealed in the
ceiling or in pipes deep in the ground or high
up.
Operating the Locator
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