User's Manual

DIGITAL CONTROL INCORPORATED
DigiTrak F5 Operator’s Manual xli
Once an option is selected, the screen will return to the main menu with the type and
frequency of the selected transmitter displayed at the top of the screen.
If a new transmitter option is selected, calibration will be required. Calibration is not required,
however, when switching between transmitters that were previously calibrated. Calibration is
required every time a new transmitter, receiver, or different housing is used.
Note When using a “12/1.3” dual-frequency transmitter (F5D 12/1.3 or
F5Dp 12/1.3), you only need to calibrate under one of the dual
options, DH or DL, for both dual frequencies, 12 kHz and 1.3 kHz,
to be calibrated. Verify the depth reading at two distances in both
frequencies before drilling. If using single high (SH) mode, you
must calibrate separately.
Changing the Frequency of a “19/12” Dual-Frequency
Transmitter
The “19/12” dual-frequency transmitters (F5D 19/12 and F5Dp 19/12) can be used at either
frequency (19.2 kHz or 12 kHz). After the transmitter has been powered on, the frequency
setting of the transmitter can be changed two different ways: the pitch method is done with
the transmitter above ground, while the roll method is done with the transmitter installed in
the drill head and below ground.
Pitch Method
1. Place the transmitter on an approximately level surface (±6.75° or ±15%) and ensure
the receiver is in locate mode and transmitter data is being displayed.
2. Tilt the transmitter up so that it has a pitch value of greater than 50° (over 100% or
nearly vertical).
3. Once the receiver displays the new pitch value of greater than 50° or 100%, carefully
roll the transmitter at least one clock position while holding it at the tilted angle.
4. Once the change in roll displays on the receiver, hold the transmitter steady for 10–
18 seconds.
5. Without rolling the transmitter, slowly return it to the level surface.
6. Watch the receiver display to observe when all transmitter data disappears, which
indicates that the transmitter frequency has changed (this will take approximately
10–18 seconds).
7. Go to the transmitter selection menu on the receiver and select the new frequency,
which will then display at the top of the menu screen. Open the Locate Mode screen
to verify that transmitter data appears on the display.
Roll Method
1. Ensure that the roll offset function is disabled and transmitter roll data is displayed on
the receiver.
2. Position the transmitter at 10 o’clock (± one-half clock position) for 10–18 seconds.