Direct Connection; Using Accessories - SPX Radiodetection RD8000 User Manual

Locating pipes and cables
Passive Frequencies
Passive frequency detection takes advantage of signals that are already present on
buried metallic conductors. The RD8000 supports four types of passive frequencies:
power, radio, CPS and CATV signals. You can detect these frequencies without the aid
of the transmitter.
Active Frequencies
Active frequencies are applied direct to the pipe or cable using the transmitter. The
transmitter can apply a signal using two methods: induction and direct connection.
Induction
The transmitter is placed on the ground over or near the survey area. You select the
appropriate frequency. The transmitter will then induce the signal indiscriminately to
any nearby metallic conductor. In induction mode, using higher frequencies is generally
recommended as they are induced easier onto nearby conductors.

Direct connection

In direct connection, you connect the transmitter directly to the pipe or cable you wish to
survey. The transmitter will then apply a discreet signal to the line, which you can locate
using the locator. This method provides the best signal on an individual line and enables
the use of lower frequencies, which can be traced for longer distances.
Connecting the transmitter to a pipe or line requires the use of a direct connection lead
or clamp and a ground stake to complete the circuit.
WARNING! Direct connection to live wires is POTENTIALLY LETHAL. Direct
connections should be attempted by fully qualified personnel only!

Using accessories

The locator and transmitter are compatible with a wide range of accessories. For
detailed information on using any of the accessories below please refer to the RD8000
operation manual.
Signal clamps
When it is not possible to connect directly onto a pipe or cable or not suitable to use
induction mode a transmitter signal clamp may be used. The clamp is plugged into the
output of the transmitter and provides a means of applying a locate signal to a pipe or
cable. This is particularly useful with live cables as it removes the need to disable the
power and break into the line.
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