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DIGICAT 500i/550i, How to Use the Sonde
7
How to Use the Sonde
7.1
General Information
Description
The Sonde is a dual frequency signal transmitter used to trace drains, sewers and other non
conductive services. It can be attached to a range of equipment including drain rods, boring
tools and inspection cameras. It is powered by a 1.5 V LR6 (AA) battery, so unlike other
accessories this does not require a connection to the transmitter.
The signal pattern transmitted from the Sonde is different to that which is radiated from a
service; transmitting a peak signal over its main body, with a ghost signal at the front and
back. This requires the Sonde to be traced with its own unique method.
The i Series Locators feature a numeric signal strength indicator (user setting SSI set to ON)
which will greatly improve the locating process.
The numeric signal strength indicator is shown in the display readout on the Locator.
7.2
Sonde Overview
Sonde main parts
The thread on the Sonde is a male M10, and comes with adaptors to both British and Euro-
pean drain rods.
a
b
c
d
a) LED
b) Sonde body
c) LR6 (AA) battery
d) End cap and M10 connection point
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