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2. OPERATION
2-21
2.13 Resetting Distance Run
The distance run may be reset to zero as below when the source of distance run
is GPS or VBW.
1. Press the [MENU] key to display the main menu.
2. Choose TRIP MENU and then press the [ENT] key.
3. Choose RESET DISTANCE and then press the [ENT] key.
RESET DISTANCE?
ARE YOU SURE?
YES NO
RESET DISTANCE prompt
4. Choose YES and then press the [ENT] key.
5. Press the [DISP] key to close the menu.
2.14 Choosing External Heading Source for Backup
Choose the source of heading data as below.
CAUTION
CAUTION
1) Never switch from internal to external
heading while the autopilot is in the
automatic mode. Change to the
manual mode before switching.
2) The SC-50 outputs the heading
signal from external equipment
and, in case of the THS sentence,
outputs "mode indicator A". How-
ever, the quality of the THS heading
signal cannot be guaranteed.
1. Press the [HDG SETUP] key.
HEADING SETUP
OFFSET : +000.0°
(SERVICE ONLY)
HEADING
: SC
SC HDG - - - . -
°
EXT HDG
- - - . -
°
OFFSET : Heading offset. See service manual for instructions.
"SERVICE ONLY" means heading offset shown
for display only.
HEADING
: Select heading source. Choose INT for normal use.
If a gyrocomapss is connected for primary means,
leaving this equipment as backup, choose EXT.
SC HDG
: Bow heading. Includes offset.
EXT HDG
: Heading fed from external equipment.
Heading setup menu
2. ”HEADING” is selected; press the [ENT] key.
3. Choose INT or EXT as appropriate. Normally choose INT. If own GPS sensor
is not working and a heading sensor such as a gyrocompass is available,
choose EXT.
4. Press the [ENT] key.
5. Press the [DISP] key to close the menu.