User's Manual

DIGITAL CONTROL INCORPORATED
70 DigiTrak Falcon
™
F5

Operator’s Manual
5. After 10–18 seconds, all transmitter data disappears from the receiver’s screen,
indicating the transmitter frequency has changed.
6. Select the new frequency band in the Band Selection Menu. The new band displays at
the top of the Main menu. It may take up to 30 seconds for the transmitter to begin
sending data on the new frequency; return to the Locate screen and verify that
transmitter data appears on the display.
Below Ground (Mid-Bore) Roll Methods
Switching between bands on the Falcon F5 transmitter may provide better data results while
drilling in a section of the bore with a high level of interference. Use these methods to switch
between transmitter frequency bands mid-bore. Practice these roll methods before sending
the drill head below ground.
Frequency Change, 10-2-7
1. Ensure roll offset is disabled and transmitter roll data is displayed on the
receiver.
Roll Offset
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2. Position the transmitter at 10:00 (±1 clock position, or CP) for 10–18 seconds.
3. Roll the transmitter clockwise to its 2:00 position (±1 CP) within 10 seconds and remain
there for 10–18 seconds.
4. Roll the transmitter clockwise to its 7:00 position (±1 CP) within 10 seconds.
5. When transmitter data disappears from the receiver, the transmitter frequency has
changed. This will take approximately 10–18 seconds.
6. Select the new frequency band in the Band Selection Menu. The new band displays at
the top of the Main menu. It may take up to 30 seconds for the transmitter to begin
sending data on the new frequency; return to the Locate screen and verify that
transmitter data appears on the display.
7. Re-enable roll offset, if applicable.
Frequency Change, Repeating Roll Sequence (RRS3)
1. Remain at any clock position (CP) for at least 40 seconds to clear all timers.
2. Make a reference mark on the drill string.
3. Complete one full clockwise rotation (±2 CP) of the reference mark within 0.5–30 sec.,
then wait 10–20 seconds.
4. Repeat step 3 two more times, for a total of three rotations (RRS3).
5. After the third rotation, leave the drill string at rest for a total of 60 seconds, after which
the transmitter changes frequency.
6. Select the new frequency band in the Band Selection Menu. The new band displays at
the top of the Main menu. It may take up to 30 seconds for the transmitter to begin
sending data on the new frequency; return to the Locate screen and verify that
transmitter data appears on the display.
If any rotation is not completed within the prescribed time, or if any rotation continues for
more than one full revolution, the transmitter frequency change is cancelled.