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24 Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
RADIO SETUP
WATCH MODE
WX ALERT
> COM PORT
GPS SOURCE
NAVBUS
> ON
OFF
GPS SOURCE
NMEA
> NAVBUS
COM PORT
NMEA
> GPS SOURCE
BARO & TEMP
RADIO SETUP
WATCH MODE
WX ALERT
> COM PORT
BARO & TEMP
> ON
OFF
COM PORT
NMEA
GPS SOURCE
> BARO & TEMP
3-8-2 NAVMAN GPS data source (GPS SOURCE)
1. Select RADIO SETUP, then COM PORT.
2. Select GPS source, then select NAVBUS.
3. The cursor is at ON. Press ENT or push the rotary knob to confi rm the setting and return to the menu.
3-8-3 Use the 721 as barometric pressure and temperature data source (BARO & TEMP)
1. Select RADIO SETUP, then COM PORT.
2. Select BARO & TEMP.
3. The cursor is at ON. Select ON to have the radio provide the barometric and temperature data to other
instruments connected. Select OFF to have another instrument to act as the source of this data.
3-9 Barometric Displays (BARO SENSOR)
A barometric sensor in the microphone measures air pressure changes, enabling the radio to provide
three useful aids towards weather prediction and fishing conditions, particularly when you’re close to
large land masses. (See the information on the Happy Fish icon in Section 1.5.) The radio can show:
• a weather icon to indicate five different conditions (SUNNY, PARTLY CLOUDY, CLOUDY, RAINY,
SNOW). The local air pressure trends combined with the local temperature determines which
weather icon is displayed. (NOTE: In open ocean conditions the weather icon can be less
accurate than when close to large land masses.)
• a digital readout of air pressure (in mb or in/Hg).
• a graphical display of barometric pressure changes over the past consecutive 24 hours.
Barometric data is maintained even if the radio is switched
off.
NOTE: If the vessel Battery Master is turned OFF, the BARO history is erased.
3-9-1 Set the Barometric Units (BARO UNITS)
1. Select RADIO SETUP, then BARO SENSOR.
2. The cursor is at BARO UNITS. Press ENT or press the rotary knob.
3. The cursor is at MILLIBARS. Press ENT or press the rotary knob to show barometric pressure in MILLIBARS
or select INCHES to show barometric pressure in inches of mercury.
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
BARO UNITS
> MILLIBARS
INCHES
BARO SENSOR
> BARO UNITS
BARO DISPLY
BARO CAL.