NorthStar Navigation NorthStar 491 manual Turning the temperature alarm on and off

Models: NorthStar 491

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Setting the upper and lower temperature limits

Setting inside or outside temperature limits

Turning the temperature alarm on and off

You can set the upper and lower temperature limits. When the water temperature is either inside or outside these limits, the temperature alarm will sound.

To set the upper temperature limit:

1.At the TEMPERATURE ALARM window, press SET UPPER LIMIT.

The upper limit window is highlighted in black.

2.Press the CURSOR PAD up or down to set the temperature, or use the KEYPAD to manually enter the desired temperature.

The temperature is displayed in the tab just below the SET UPPER LIMIT key.

To set the lower temperature limit:

1.At the TEMPERATURE ALARM window, press SET LOWER LIMIT.

The lower limit window is highlighted in black.

2.Press the CURSOR PAD up or down to set the temperature, or use the KEYPAD to enter the desired temperature.

The temperature is displayed in the tab just below the SET LOWER LIMIT key.

If you set the upper and lower temperature limits as inside limits, the temperature alarm sounds when the temperature is detected within these limits. If you set these limits as outside limits, the temperature alarm sounds when the temperature is detected outside of these limits.

Press INSIDE/OUTSIDE LIMITS on the TEMPERATURE ALARM window to switch between the inside and outside settings. The current setting is displayed in the tab just below the INSIDE/ OUTSIDE LIMITS key.

To turn the alarm on, at the TEMPERATURE ALARM window, press TURN ALARM ON. To turn the alarm off, press TURN ALARM OFF.

491 Echo Sounder Operations Manual

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NorthStar Navigation NorthStar 491 Turning the temperature alarm on and off, Upper limit window is highlighted in black