Garmin 495 Guida Utente

Setting up and Using Sonar > 

Viewing the Sonar Temperature Tab

  NOTE: You must be receiving proper sonar data from another 

device, such as a Garmin GSD 20 or GSD 21 Sounder Module, 

to view temperature information. 

The Temperature sub tab provides a visual graph of water 

temperature changes over a period of time. The graph reads from 

right to left, so that the most recent temperature measured is shown 

on the far right side of the graph. The dotted lines within the graph 

indicate intervals in the temperature scale and the duration of time. 

  NOTE: Select Temp for the Transducer type in the Sonar 

Setup. See 

 on 

 for more 

information. 

Press MENU twice to open the Main Menu. Select Sonar from the 

vertical row of tabs on the left, then select Temperature from the 

row of tabs along the top of the screen.

The graph adjusts and shown the temperatures changes according to 

the Temperature Scale and Time Duration settings. 
Temperature Scale—select the degree span from the list. Select 

Auto to have the unit automatically determine the best range, or 

select a span of 2, 4, 6, 8 or 10 degrees.
Time Duration—set how fast or slow the temperature log scrolls: 

a shorter the time duration means a faster temperature log scroll. 

Select a duration from 1 minute to 2.5 hours.

To reset the scale range for the temperature graph, press MENU, 

highlight Reset Auto Scale, and press ENTER. This is useful 

when the scale spans a large range due to extreme temperature 

changes. You can only reset the scale when you select 

Auto for the 

Temperature Scale. 
To restore the temperature graph to defaults, press 

MENU, highlight 

Restore Default, and press ENTER.