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Identifies and describes the physical controls and keys located on the display unit's front panel.
Explains the primary and secondary functions associated with each control and key on the unit.
Details how touchpad keys perform dual functions and how the 2ND key switches between them.
Explains the two-step procedure for primary function keying and single-stroke for secondary functions.
Covers power on/off, brilliance adjustment, and selecting between six presentation modes.
Explains how to select the basic range for the underwater view using dedicated keys.
Details the selection of ranges specifically for bottom-lock expansion display.
Describes how to adjust the receiver's sensitivity to optimize echo detection.
Guides through basic checks to determine if the unit is defective when not operating properly.
Addresses issues like multiple seabed traces, loss of echo, and inoperative bottom tracking.
Covers troubleshooting for distorted pictures, color impurity, and heavy noise interference.
Explains how to initiate and interpret the unit's self-check facilities for diagnosis.
Provides guidelines for selecting a suitable location and mounting the display unit.
Details optimal transducer placement to avoid air bubbles and engine noise for best performance.
Explains how to modify internal settings like temperature range, data format, and display specifications.
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