User's Manual
Table Of Contents
- Safety Precautions and Warnings
- Dear Customer:
- Introduction
- Receiver
- Transmitter
- Remote Display
- Battery Charger
- Locating Instructions
- Appendix A: System Specifications and Maintenance Requirements
- Appendix B: Projected Depth Versus Actual Depth and the Fore/Aft Offset
- Appendix C: Calculating Depth Based on Distance Between FLP and RLP
- LIMITED WARRANTY
Transmitter
Dangerous Transmitter
Temperature Indicator
If the transmitter reaches 118°F (48°C), the receiver will emit warn-
ing tones at regular intervals (see table below), and the transmitter
temperature symbol will change to indicate the transmitter has
reached a dangerous temperature—three curved lines will be seen
extending from the top of the thermometer, and the thermometer
symbol will appear full, as shown in the figure to the right. When the
transmitter temperature reaches 140°F (60°C), the thermometer
symbol will flash and the beeps from the receiver will become more
rapid (see table below).
The warning tones that will be emitted due to transmitter temperature overheat are summarized in the
following table. Warning tones will occur for every 7°F (4°C) increase in temperature unless otherwise
noted in this table.
Transmitter Temperature Warning Tones
Temperature Warning Tones
Below 90°F (32°C) Double-beep sequence (beep-beep)
From 96°F–111°F (36°C–44°C) Two double-beep sequences (beep-beep, beep-beep)
From 118°F–133°F (48°C–56°C) Three double-beep sequences (beep-beep, beep-beep, beep-beep)
From 140°F–169°F (60°C–76°C) Three double-beep sequences every 5 seconds
Above 169°F (76°C) Continuous triple-beeps; transmitter shuts down above 176°F (80°C)
The transmitter also has 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. The
temp dot should be white if the transmitter has not been exposed to excessive heat. If the temp dot is
silver or gray, it indicates the transmitter has been exposed to heat but not in excess of the specifications.
A black temp dot indicates the transmitter has been exposed to temperatures in excess of 220°F (104°C)
for an LT transmitter and in excess of 180°F (82°C) for an LS2 transmitter.
Black
Temp Dot
(Overheated)
Temp Dot
Index Slot at
6 o’clock Position
Front End Cap of Transmitter Showing Temp Dot, Index Slot, and Black Temp Dot
30 DigiTrak
®
LT2™ Operator’s Manual