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25Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
3-9-2 Switch the Barometric Display ON or OFF (BARO DISPLY)
1. Select RADIO SETUP, then BARO SENSOR.
2. Select BARO DISPLY.
3. The cursor is at LCD OFF. Press ENT or press the rotary knob to switch OFF the barometric display on the
base unit, or select LCD ON to show the barometric display on the base unit.
IMPORTANT: LCD OFF is the default. This minimises the current drain of the standby vessel battery to about
3mA average. If the barometric display is set to LCD ON the current drain is continuous at about 85mA.
3-9-3 Calibrate the Barometric Sensor (BARO CAL.)
The barometric functions and icons work best when calibrated to local conditions. The operating range
is from 960mb to 1060mb.
1. Select RADIO SETUP, then BARO SENSOR.
2. Select BARO CAL. then change the setting to match the reading on an accurate instrument nearby or
the reading given by a local weather station.
3-10 Temperature Display (TEMPERATURE)
A temperature sensor in the microphone measures air temperature changes.
3-10-1 Set the Temperature Units (UNITS)
1. Select RADIO SETUP, then TEMPERATURE
2. The cursor is at UNITS. Press ENT or press the rotary knob.
3. The cursor is at ºC. Press ENT or press the rotary knob to display the temperature in ºC (Celsius) or select
ºF to show the temperature in Fahrenheit.
3-10-2 Calibrate the Temperature Reading (CAL.)
The temperature sensor works best when calibrated to local conditions.
1. Select RADIO SETUP, then TEMPERATURE.
2. Select CAL. then change the setting to match the reading on an accurate instrument nearby or the
reading given by a local weather station.
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
BARO DISPLY
> LCD OFF
LCD ON
BARO SENSOR
BARO UNITS
> BARO DISPLY
BARO CAL.
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
CAL
MODIFY?
> ± 0.00 In-Hg
PRESS ENT
BARO SENSOR
BARO UNITS
BARO DISPLY
> CAL
RADIO SETUP
COM PORT
BARO SENSOR
> TEMPERATURE
CAL
MODIFY?
> ± 0.00 In-Hg
PRESS ENT
TEMPERATURE
> UNITS
CAL.
RADIO SETUP
COM PORT
BARO SENSOR
> TEMPERATURE
TEMP SENSOR
> ˚C
˚F
TEMPERATURE
> UNITS
CAL.