C-SCOPE L2 Series Instruction Manual page 28

Using the Generator/ Transmitter:
Signal Hopping using Direct Connection Leads
If it is difficult or inconvenient to use the Direct Connection method
of signal application then an alternative technique
called Signal Hopping can be utilised to successfully energise
a street lighting or car park lighting cable with the Generator/
Transmitter signal.
Wrap the red Direct Connection lead around the street lighting
column (two or three times if possible). This is particularly
useful if it is difficult to get a good metal to metal connection
between the crocodile clip or magnet and the column.
The black Direct Connection lead is connected to the Earth Stake
positioned away from the column.
G
MXT2 Transmitter only: Ensure CF frequency setting is selected.
NOTE If the Earth Stake cannot be inserted into the ground then simply laying it flat on the ground
will often provide a successful earth connection when using the Signal Hopping technique.
28
Signal Hopping