Garmin gpsmap 198c sounder User Manual

M

AIN

 M

ENU

 > 

H

IWAY

, T

EMP

, 

AND

 S

ONAR

 T

ABS

The Hiway tab contains screen settings for the Highway Page. 

Refer to the “Highway Page” section on 

page 35

. 

The Temp tab screen the water temperature log. The temperature 

log requires input from a temperature transducer/sensor. The most 

recent temperature measured shows on the far right side of the 

chart with the history trailing to the left. The dotted lines within the 

chart indicate intervals in the temperature scale and the duration of 

time.
The following settings are available:

•   Temperature Scale—controls the temperature range for 

showing the log. 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—controls the number of temperature 

readings shown on the log. Shorter time durations shows a 

greater the number of log points. Use longer time durations 

to detect temperature trends, instead of immediate readings.

The Sonar tab contains setup options for the Sonar Page. The Sonar 

Page is not active if you do not have a transducer connected. Refer 

to the “Using Sonar” section on 

 for more information on 

sonar setup options.