Ff Signal Method - Radiodetection RD400PDL-2 User Manual

FaultFinding
Lf 8 33 65
8 33 65
Lf
Line fault
Red Green
Lf
8k
33k
65k
User Hz
Radiodetection
Radiodetection Ltd. Radiodetection Corp.
Western Drive PO Box 623
Bristol BS14 0AZ, UK Ridgewood, NJ07451, USA
On/Off
A-V-O
Line
Serial No.
12V
Adaptor
RD400PDL-2/PXL-2 User Guide
a
b
a
b
Line fault
ahead behind
mA
FF Normal
FF Boost
Multi
Connect 24V
Connect 50V
Mode Up
Select Down
01/MH1054L1ENG/3
Connect Fuse
Pressing the Peak/Null key selects either Peak,
Null (standard locate modes) or the Accessory
Socket when A-Frame is connected.
Use the Receiver in the Peak or Null mode to
locate the cable.
Using the Peak/Null key, select the Accessory
Socket mode and push the A-Frame spikes into
the ground, near the Transmitter Ground Stake,
with the Red spike nearer the Ground Stake.
Adjust Receiver gain to give a bar graph indication
of approximately 80%.
Press the Current key twice to display CD mode.
Press and hold the Shift key then press the
Current key, this resets CD, indicated by 'rSt'
being displayed. The CD arrow should now point
away from the Ground Stake.
Follow the cable route pushing the A-Frame
spikes into the ground at regular intervals and
check for a forward pointing arrow. When the
backward pointing arrow is displayed move the A-
Frame backwards or forwards, as indicated by the
direction of the arrow, until the exact point is found
where the arrow changes direction.
The centre line of the A-Frame is now directly over
the fault provided that the operator is pinpointing
the fault above the known cable location.
If the location of the cable is not certain, use Peak
mode to pinpoint the cable, then return to the CD
mode to pinpoint the fault again.

FF Signal Method

Carry out the procedure in the 'Transmitter Setup'
section.
Using the Mode key, move the pointer so that it
points to FF Normal or FF Boost, the pointer will
flash.
Note: The selection of FF Normal or FF Boost
depends on the previously measured fault
resistance. As a guide, select FF Normal for faults
below 5 kilohms.
Press the Select key to set the Transmitter to the
chosen FF mode, the pointer will stop flashing.