User's Manual

Locating
DigiTrak
®
F5 User Guide 52
2. As the tool advances, the FLP should travel along the
receiver’s vertical crosshairs indicating that the tool is still
online.
3. Once the FLP is in the box, hold the trigger in and
confirm that the predicted depth reading is as expected.
4. Continue by again positioning yourself one rod length
ahead of the FLP and repeat the method.
Off-Track Locating
Use this procedure when it is not possible to walk above the
transmitter due to a surface obstruction or interference.
For effective Off-Track locating, the pitch of the transmitter
must match the pitch of the terrain. Ideally, pitch will be 0%
(0⁰) on flat ground.
The technique uses the perpendicular relationship of the
locate line to the transmitter. You must find and mark at least
two points, preferably three, that are on the locate line, and
out of the area of obstruction to track.
The procedure:
1. Stop drilling before the transmitter enters the area of the
obstruction or pull back to where you can walk over the
transmitter.
2. Find and align the FLP and RLP to determine the
transmitter’s heading.
3. Position the receiver with the locate line in the box.
4. Walk to the side of the transmitter while keeping the
locate line in the box. Pull and release the trigger to re-
reference the signal if the LL disappears.
5. Once you are able to walk forward without obstruction,
move the receiver in a fore/aft direction and observe
where the ball flips from the bottom of the screen to the
top of the screen (or vice versa) and the locate line is
aligned in the box. Mark this location on the ground.
6. Pull the trigger in for a depth reading. The depth reading
will actually be the slant distance to the transmitter.
Make note of this value and your distance from the bore