User's Manual

Transmitter
36 DigiTrak
®
F5™ Operator’s Manual
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 F5 or F Series transmitter, F5 receiver, or different housing is used.
NOTE: When using a 5XD 12/1.3 or a F5Dp 12/1.3 dual-frequency transmitter, 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 Frequency of
a “19/12” Dual-Frequency Transmitter
The 5XD 19/12 and F5Dp 19/12 transmitters 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 in two
ways. One method is conducted with the transmitter above ground and is called the pitch method. The
other is conducted with the transmitter installed in the drill head and below ground and is called the roll
method. Both methods are described below.
Pitch Method – Select the desired transmitter frequency in the transmitter selection menu. Position the
transmitter on a level surface so that its roll position will not change during the operation and wait
approximately 12 seconds. Without rolling the transmitter, tilt it up so that it has a pitch value of greater
than 50° (over 100% or nearly vertical) and hold it there for 10–18 seconds. Then reposition the
transmitter so that it is approximately level again (±6.75° or 15%). The transmitter frequency setting
should change within 10–18 seconds and transmitter data should display on the receiver locate screen.
Roll Method – Ensure that the roll offset function is disabled and transmitter roll data is displayed on the
receiver. Position the transmitter at 10 o’clock (± one-half clock position) and allow it to remain there for
10–18 seconds. Then roll the transmitter clockwise to its 2 o’clock position (±one-half clock position) and
allow it to remain there for 10–18 seconds. Then roll the transmitter clockwise to its 7 o’clock position
(±one-half clock position). When the transmitter frequency changes (10–18 seconds), transmitter data will
disappear from the receiver locate mode screen. Select the new frequency in the transmitter selection
menu and verify that transmitter data displays on the receiver locate screen.
NOTE: If you must disable the roll offset function before changing frequencies, be sure to note the
transmitter’s uncompensated roll position when the drill head is at its 12 o’clock position. After
a successful frequency change, you must rotate the drill head so that the roll position of the
transmitter shows the noted value and again enable the roll offset function.