Transmitter, Batteries, Temperature Display

Transmitter	®

Transmitter roll positions are displayed digitally as a whole number from 1 through 12 in the top right window with the receiver’s trigger released. The numbers correspond to the hour hand of a clock. At the 12 o’clock position, the transmitter is oriented with the index slot at the top. The tapered or flattened sur- face of the drill head should be indexed to this position.

Batteries

All DCI transmitters (except the cable transmitter) are powered by C-cell alkaline batteries (see Trans- mitter Specifications at the end of this section). The long-range transmitters, including the sensitive-pitch transmitters, have a 4 C-cell option for longer bores. The status of the batteries in the transmitter can be viewed (in percent life remaining) using the receiver’s display (see “Battery Status Display” below). The cable transmitter requires an above-ground power supply (see Transmitter Section).

Temperature Display

Transmitter temperature is displayed in degrees Celsius. Every 4°C increase in the transmitter’s temperature will flash for 2 seconds in the top right window of the receiver and the remote display. The receiver will also sound audible tones that increase in intensity as the transmitter’s temperature increases. When the remote display has a DataLog module attached, the transmitter’s temperature increase tones will be heard at the drill. To manually view the temperature of the transmitter, simply hold in the receiver’s trigger; the temperature will flash in the top right window. Receivers with pre-5.0 series firmware will display the temperature in the top right window while the trigger is held in, but it will not flash. To view the transmitter tempera- ture at the drill, see the Remote Display Section.

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Transmitter Temperature

Display (Flashing)

Battery Status Display

The percent of battery life remaining in the transmitter is displayed in the top left window for 2 seconds upon releasing a held-in trigger. The transmitter’s battery status in percent remaining life is displayed as 100, 90, 75, 50, 25, 10, 5, or 0. (The receiver’s battery status in percent remaining life is also displayed during this 2-second interval in the top right window as 99, 90, 75, 50, 25, 10, 5, or 0.) If the word BAT occurs in the top left window when not viewing the transmitter’s battery status, the transmitter batteries must be replaced.

NOTE: Neither the temperature nor the battery status will be available until 4 minutes after initial start-up for receivers with 5.0 series or later firmware.

BAT 90 90

Transmitter Battery Status in Percent Remaining Life

Temperature Overheat

All transmitters have a temperature overheat indicator (temp dot) that has an outer yellow ring with a 1/8- inch (3-mm) white dot in the center. This temp dot is located on the stainless-steel front end cap. On older transmitters, the temp dot is located inside the battery compartment next to the battery terminal.

20	DigiTrak® Mark III Operator’s Manual