NorthStar EXPLORER 721EU Operation And Installation Manual page 26

Information regarding Barometer, Weather and Happy Fish operation:
For these functions to operate correctly, the barometer sensor built into the microphone requires a
permanent power connection. When the radio is turned off with the power knob on the radio, power
continues to flow to the barometer sensor. This enables a 24 hour barometer trend to be collected and is
used with the Happy Fish and Weather predictor.
Notes:
• Barometric data is maintained even if the radio is switched off (via the power knob).
• If the power supply to the radio is disconnected (vessel Battery Master is turned OFF), the
barometer trend will cease and will re-start when power is re-applied.
• Happy Fish and Weather may not function, or may be inaccurate for several hours after initial
power up.
• Baro history is not shown on Optional Handset (701/705) only Baro units.
• In open ocean conditions the weather icon can be less accurate than when close to large land
masses.
3-9-1 Set the Barometric Units (BARO UNITS)
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
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-HG to show barometric pressure in inches of mercury.
3-9-2 Switch the Barometric Display ON or OFF (BARO DISPLY)
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
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 when turned off.
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.
RADIO SETUP
WX ALERT
COM PORT
> BARO SENSOR
26
BARO SENSOR
> BARO UNITS
BARO DISPLY
CAL .
BARO SENSOR
BARO UNITS
> BARO DISPLY
BARO CAL .
BARO SENSOR
BARO UNITS
BARO DISPLY
> CAL
Northstar Explorer VHF Series: 721/725 Operation and Installation Manual
BARO UNIT
> MILLIBARS
INCHES-HG
BARO DISPLY
> LCD ON
LCD OFF
CAL
> ± 0 .00 In-Hg