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General| Display Size | 4.3 inches |
|---|---|
| Display Resolution | 480 x 272 pixels |
| Power Output | 300 Watts (RMS) |
| Sonar Type | Dual Beam |
| GPS | No |
| Waterproof Rating | IPX7 |
| Transducer Included | Yes |
| Display | Color LCD |
| Depth Capability | 600 ft |
Owner's responsibility for safe installation and use, disclaiming liability for accidents or damage.
Compliance details for Class B digital device, covering radio frequency energy and interference mitigation.
Highlights the advanced TFT technology, color palettes, variable power output, and depth detection capabilities.
Explains the function of the transducer and display unit, ultrasonic pulses, and echo processing.
Details the function of each button: MENU, cursor keys, +, and power/backlight button.
Explains how to select menu items and change settings using the keys.
Describes how to turn the unit on manually or via auto-power, and initial setup prompts.
Configure language, backlight, key beep, auto power, snooze mode, and factory reset.
Adjust scroll speed, fish filter, palette, color bar, digit size, bottom lock, and interference filter.
Configure fuel tank settings, number of engines, and flow filter for fuel tracking.
Customize data header display items and set the time base for temperature graphs.
Options to reset trip distance, total distance, and engine hours.
Set alarms for shallow/deep water, fish, temperature, battery, and fuel levels.
Set units for distance, speed, depth, fuel, and temperature.
Configure NMEA output and specify NMEA data sentences for external devices.
Calibrate speed, temperature, fuel, and set keel offset for accurate readings.
Explains how to read sonar history, scroll speed effects, bottom traces, and echo strength.
Details how to find fish, interpret fish symbols, and understand fish arches.
Explains Auto Gain and Manual Gain modes for optimizing detail and signal clarity.
Covers Auto Range and Manual Range modes, and adjusting zoom range and offset.
Full screen display of sonar history, showing echoes from right to left.
Split display showing sonar history and a magnified zoom section.
Split display highlighting bottom signals as a flat trace for easier interpretation.
Detailed sonar analysis and gain optimization view.
Shows remaining fuel, fuel consumption, and fuel economy.
Displays temperature, depth, and other selected data items, often with a graph.
Lists the standard components included in the Explorer 435/438 package.
Details optional accessories like chartplotters, transducers, and fuel kits.
Covers flush mounting and bracket mounting procedures for the display unit.
Details various wiring configurations for power, alarms, and data communication.
Explains NMEA as a standard for marine instrument data sharing.
Instructions for cleaning the display screen safely with mild detergent.
Advice on protecting transducers from damage, debris, and repainting.
Troubleshoots power, startup, shutdown, display, and language problems.
Addresses erratic operation, bottom detection, display anomalies, and signal interpretation.
Resolves problems with fuel readings, flow rates, economy calculations, and double bottom traces.
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