User's Manual

DIGITAL CONTROL INCORPORATED
62 DigiTrak Falcon

F2

Operator’s Manual
Below Ground (Mid-Bore) Roll Methods
Switching between bands on the Falcon F2 transmitter may provide better data results while
drilling in a section of the bore with a high level of interference. Use these methods to change
the frequency band of a transmitter mid-bore.
Frequency Change, 10-2-7
1. Ensure roll offset is disabled and transmitter roll data is displayed on the
receiver.
Roll Offset Menu
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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 receiver's Transmitter Options 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.
Transmitter
Options Menu
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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. Complete one full clockwise rotation (±2 CP) within 0.5–30 sec., then wait 10–20
seconds.
3. Repeat step 2 two more times, for a total of three rotations (RRS3).
4. After the third rotation, leave the drill string at rest for a total of 60 seconds, after which
the transmitter changes frequency.
5. Select the new frequency band in the receiver's Transmitter Options 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.
Transmitter
Options Menu
Page 26
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.
Warning A warning symbol in the roll indicator after changing bands on the receiver means
the transmitter has not yet been calibrated in this band. While locate positions and
roll/pitch data will be correct, depth readings will be incorrect.