User's Manual

PDL-4 A.C.ID-M System (with GPS) User Guide
Page 14
Tracing Procedure
Tracing the cable between confirmation locations is
carried out using both Peak and Null modes. Peak
mode is preferred as, in null mode, the signal is
easily distorted.
Peak
Rotate the PDL-4 until the orientation line in the
centre of the Cable Orientation Indicator is aligned
with the North/South marks.
Whilst moving the PDL-4 steadily from side to side,
follow the line of maximum response, keeping the
blade vertical and maintaining Cable Orientation
Indicator alignment.
Null
If required, press the Peak/Null key to select Null
mode and follow the path of the target cable.
Minimum response, with an increased response on
each side, indicates the position of the target cable.
Press the Peak/Null key again to return to Peak
mode.
Locate Procedure
Ensure the LMS-3 transmitter is set to CD mode and
is energising the correct cable.
If a PTx-3 transmitter is generating the signal, ensure
that the LMS-3 is not also energising the cable.
Locate the target cable using Peak mode then check
using Null mode.
Ensure that the PDL-4 is in Peak mode before taking
measurements.
Current Direction (CD)
CD - Reset
Before using Current Direction information a CD
Reset must be carried out.
Set the PDL-4 to CD mode, by pressing the Freq.
Mode key until CD is displayed. With your back to
the transmitter (facing end ground), hold the receiver
blade vertical and across the target cable.
Press the menu key located next to the CD Reset
key.