Lowrance electronic LMS-480M, LMS-480DF manual Ping Speed & HyperScroll, Steering arrow

Steering arrow

At left, Map Page showing boat cruising Puget Sound, Washington, with Overlay Data turned on. This example shows Depth, Ground Speed and the Steering Arrow. Note that the Steering Arrow always points directly to the destination you are navigating toward. In this case, the boater is headed on a northwesterly course of 275º. Since the helmsman is on course, the Steering Arrow is pointing straight ahead. If the helmsman veered off course, the arrow would show which direc- tion to steer to get back on course toward the destination. At right, Sonar Page with Overlay Data turned on. This example shows Depth, Ground Speed and the Track the boat is following.

NOTE:

Some data types can be displayed in only one font size. If that is the case, the Data Size box will not be displayed for that data type.

Ping Speed & HyperScroll

Ping Speed controls the rate at which the transmitter and transducer broadcast sonar sound waves — pings — into the water. The unit has a default ping speed of 50 percent. At normal boating speeds, this auto- matically provides enough return echoes to refresh the screen and scroll the chart at maximum chart speed.

However, when you are running at high speeds, or just want the fastest possible screen update, you may want to use the HyperScroll feature. When you change the Ping Speed to any setting greater than 50 per- cent, the unit automatically enters HyperScroll mode.

These faster ping rates allow you to maintain a high-detail picture on the screen, and the screen refresh rate and chart scroll speed can keep pace with the boat as it moves quickly over the bottom terrain.

When using HyperScroll, you may also need to manually decrease the sensitivity for optimum performance. Depending on water depth and other conditions, HyperScroll may cause a second bottom echo to return

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