Standard Horizon DS41 owner manual Transducer Setting, Units of Measure

4.Use the " and # keys to change the value. If either key is held depressed for more than one second the reading will increase or decrease rapidly.

5.The offset can be programmed in 0.1 unit steps from -9.9!9.9 feet (or equivalent). When programmed for a negative offset, ‘-’ will be indicated on the left hand side of the display.

6.To display depth below the keel enter the vertical distance between the bottom of the keel and the depth trasnducer as a negative value.

7.To display depth below surface enter the vertical distance from the waterline to the depth transducer as a positive number (no negative sign).

8.To exit this mode, press and hold both the " and # keys simultaneously. Alternatively, if no keys are pressed for a period of 5 seconds normal depth display will resume.

ON￿ ￿OFF

Press simultaneously

The display will now indicate the current water depth.

Transducer Setting

A Transducer Setting is provided to allow the D41 to be used with different transducer types. The default setting (=0.0) is used for most transducers.

Some transducers ‘ring’ after the sonar transmit pulse (just like hitting a bell). This ringing can be interpreted as an echo from a shallow bottom. The setting is used to increase the required level that shallow echoes must meet before they will be displayed.

If the D41 gives repeated false readings of 1.5 to 3 feet depth while in deep water the transducer setting should be increased. Adjust it upward by

0.5at a time and retest. The range of values is -0.9 to +2.5. If the value is set too high it could cause erratic readings in shallow water.

Changing the Transducer Setting

1.Apply power while holding down the "ON key. The display will show either HOF or SOF for 7 seconds. Continue to hold the key down.

2. The display will show tdr.

￿￿￿

3.Release the key.

4.After 2 seconds the display will show the Transducer Setting value eg 0.0

5.Use the " and # keys to change the value.

6.To exit this mode, press and hold both the " and # keys simultaneously.

Units of Measure

To select the displayed unit

1. Apply power while holding down the # key.

￿OFF

Hold down during power up

2.When the unit is on, release the # key. The display will indicate the current display unit with:

￿￿￿ ￿￿￿

FeetMeters

￿￿￿

Fathoms

3.Use the " and # keys to change the value.

4.To exit this mode, press and hold both the " and # keys simultaneously. Alternatively, if no keys are pressed for a period of 5 seconds normal depth display will resume.

ON￿ ￿OFF

Press simultaneously

The display will now indicate the current water depth in the selected display unit.

DS41 Owner’s Manual5