SS0018V2
5
Earth of a 13A socket. If you are using it in a location where a socket is not
available the crocodile clip can be used to connect the green lead to an
earthy’ point, such as bonded metal work or even a nail in a plaster wall.
3.3 Sensitivity and Reset Function
In use the receiver will automatically adjust its sensitivity to the maximum
strength of signal received since it was last reset. The sensitivity is reset each time
the ‘POWER ON’ button is pressed.
The indications given by the receiver are:
●
SCANNING FOR SIGNAL / NO SIGNAL DETECTED: Indicated by only the ‘NO
SIGNAL’ LED being lit whilst accompanied by a steady beeping tone.
●
SIGNAL DETECTED: A higher pitched tone beeping with greater frequency;
normally accompanied by one or more of the signal strength LEDs being lit.
●
MAXIMUM SIGNAL DETECTED: All signal strength LEDs lit accompanied by a
continuous or rapidly beeping high pitched tone.
3.4 Cable Tracing
In ideal conditions the receiver can trace a signal over half a meter away from
the cable being traced. The effects of wood, plaster (especially if damp) or
screened plasterboard will reduce the signal. Earthed metal conduit may shield
it completely.
Once the transmitter has been turned on and connected to the conductor
under test the receiver should be turned on or reset whilst being held away from
the circuit. Slowly bring the receiver towards the circuit until it recognises the
test signal. This is normally indicated by a sudden change from a NO SIGNAL
indication to a MAXIMUM SIGNAL indication.
It is important to only bring the receiver as close as is necessary for it to
recognise the signal and to stop at this point and move the receiver away from
the circuit. You will notice that the receiver now indicates varying signal
strength as you move further from or closer to the distance at which it
recognised the signal.
The receiver will now operate at a maximum sensitivity which is ideal for cable
tracing.
Do not touch the cable that you are tracing (even the outer insulation) with
your other hand or you will effectively short out the signal you are tracing.
For the reasons mentioned above it is important to keep your grip on the
receiver consistent whilst tracing a circuit.
