Viewing the TemperatureUse the Temperature sub tab to view a graph of water temperaturechanges over a period of time. The graph reads from right to leftso that the most recent temperature measured appears on the farright side of the graph. The dotted lines within the graph indicateintervals in the temperature scale and the duration of time. To viewtemperature information, you must select Temp as the Transducertype on the Setup sub tab.NOTE: You must be receiving proper sonar data from anotherdevice, such as a Garmin GSD 20 or GSD 21 Sounder Module,to view temperature information.To access the Temperature sub tab:1. Highlight the Sonar tab on the Main Menu.2. Select the Temperature sub tab.Temperature Sub TabChanging the Temperature DisplayThe graph adjusts and shows the temperature changes according tothe Temperature Scale and Time Duration settings.Temperature Scale—select a degree span from the list. Select Autoto have the unit automatically determine the best range, or select aspan of 2, 4, 6, 8, or 10 degrees.Time Duration—set how fast or slow the temperature log scrolls; ashorter time duration means a faster temperature log scroll. Select aduration from 1 minute to 2.5 hours.Resetting the Temperature GraphTo reset the scale range for the temperature graph, press MENU,highlight Reset Auto Scale, and press ENTER. This is usefulwhen the scale spans a large range due to extreme temperaturechanges. You can reset the scale only when you select Auto for theTemperature Scale.To restore the temperature graph to defaults, press MENU, highlightRestore Default, and press ENTER.GPSMAP 376C Owner’s Manual 111settIng uP And usIng sonAr > settIng uP sonAr
