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17Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
2-5-1 Set the Backlighting Level
1. Select BACKLIGHT.
2. Use CH + or CH - to select a comfortable backlight level.
3. Press ENT or push the rotary knob to confi rm the new level and return to the
menu.
2-5-2 Set the Contrast Level
1. Select CONTRAST.
2. Use CH + or CH - to select a comfortable contrast level.
3. Press ENT or push the rotary knob to confi rm the new level and return to the
menu.
2-6 GPS Data and Time (GPS/DATA)
If your vessel has an operational GPS navigation receiver, the radio automatically
detects and updates the vessel position and the local time.
However, if the GPS navigation receiver is disconnected or absent, you can specify
the vessel position and the local time manually, using the GPS/DATA option.
This information is important because it will be used if you transmit a DSC distress call.
2-6-1 Manually Enter Position and UTC Time (MANUAL)
NOTE: This function is available only when an operational GPS receiver is NOT connected.
1. Select GPS/DATA, then MANUAL.
2. Enter the latitude, then the longitude, then the UTC.
3. Press ENT or push the rotary knob when all the information is correct.
The vessel’s latitude and longitude are shown on the screen, with the UTC time. After entering your
manual LL position, the prefi x “M” in the normal GPS screen indicates a manual entry. The manual entries
are cancelled if a real GPS position is received.
BACKLIGHT
LO HI
PRESS ENT
MENU SELECT
BACKLIGHT
CONTRAST
> GPS/DATA
GPS/DATA
> MANUAL
SETTING
MANUAL LL
––’ ––’ ––––N
––’ ––’ ––––W
MAN ––:––UTC
CONTRAST
LO HI
PRESS ENT