Setting the upper and lower temperature limits, Setting inside or outside temperature limits, Turning the temperature alarm on and off – NorthStar Navigation Echo Sounder NorthStar 491 User Manual

Page 65

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491 Echo Sounder Operations Manual

Page 61

Setting the upper

and lower

temperature limits

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.

Setting inside or

outside

temperature limits

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.

Turning the

temperature alarm

on and off

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

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