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Glossary
Remote Display
A device at or near the drill rig used to display the transmitter’s information communicated from the
receiver. This device can be used for remote steering when walkover locating is not possible.
Roll
The rotation about the longitudinal axis of the transmitter.
Set the Ultrasonics
To set the ultrasonics, click the trigger once and observe the bottom window. The number displayed
for 2 seconds will now be subtracted from the total magnetic distance. The ultrasonics can be set an
unlimited number of times without affecting the calibration. The ultrasonic measurement is used to
accommodate the different heights of drillers.
Slant Distance
See Depth vs. Slant Distance vs. Range.
Start-up = Power-up = Boot-up
This occurs when a battery is placed in the receiver or remote display and the unit is turned on. Power
on initiates a start-up sequence of display information. Calibration or locating cannot be initiated until
the start-up sequence is complete.
Start-up Sequence
The progression of receiver start-up displays that provide information such as the firmware version in
the receiver, the depth measurement mode, the voltage of the receiver’s battery (if 5.07 firmware), the
channel the receiver will use to send signals to the remote display at the drill; and an LCD symbol test.
Telemetry
The signal by which the receiver communicates to the remote display. There is a telemetry transmitter
in the receiver and a telemetry receiver in the remote display.
Transmitter
The transmitter (also known in the industry as a sonde, beacon, or probe) fits inside the housing/drill
tool and emits electromagnetic signals to aboveground surface that allow the locator to determine
position, orientation, and other parameters affecting the operation. The range of the transmitter is
variable and can be increased by using a Mark III Receiver.
Trigger Clicked
Clicking the trigger is pushing in and then releasing the trigger in less than ½ second. Generally, this
action will initiate an ultrasonic measurement. For more information see “Clicking vs. Holding the Trig-
ger” and “Ultrasonic Function” in the Receiver Section.
Trigger In
When the trigger is held in, the system is in “locating mode.” Different types of information are avail-
able when the trigger is held in during normal locating as well as at start up. For more information see
“Clicking vs. Holding the Trigger” in the Receiver Section.
Trigger Out
When the trigger is out or released, the system is in “tracking mode.” The transmitter’s pitch, roll, and
distance/depth are displayed and continuously updated. The information displayed on the receiver
immediately after a held-in trigger is released is dependent upon the firmware installed in the receiver.
For more information see “Clicking vs. Holding the Trigger” in the Receiver Section.
DigiTrak
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Mark III Operator’s Manual 71