The deep alarm can be set anywhere within its typicalrange of 6-120 ft.Move the DISPLAY switch from the down DEPTHposition to the up ALARM SET position. The LCDreadout will now indicate the depth to which the deepalarm is set.Slowly rotate the deep alarm knob to reduce the depth towhich the alarm is set. As the knob is rotated, thenumber displayed on the LCD readout reduces. Adjustthis knob to the desired alarm depth as indicated on theLCD readout. Once the deep alarm has been set, returnthe DISPLAY switch down to the DEPTH position toresume reading the water depth on the LCD readout.10. USE THE DEEP ALARM & ANCHOR ALARMThe deep alarm can be used by itself to warn you ofsudden drop-offs in bottom contour, or it can be used inconjunction with the shallow alarm to serve as an anchorguard. For example, to anchor the boat in a harborwhere depth varies from 20 to 24 ft. due to the tide, it ispossible to set the alarms to sound it the anchor dragsand the boat drifts either too close to shore or out intodeeper water.SEPARATELYset the shallow alarm to 18 ft. and thedeep alarm to 26 ft., then turn them both onsimultaneously. This set-up allows the alarms to toleratea four ft. tide and a four ft. sea. If the anchor drags andthe boat drifts into water that is too shallow, or too deep,an early warning is provided. This simultaneous alarmfunction can also be used to follow a contour line on yourchart. Simply adjust the shallow alarm two to four ft.shallower than the contour line and the deep alarm twoor four ft. deeper than the contour.The deep alarm will also sound whenever "No Echo" isbeing received, making it an audible "No Echo" indicator.14
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