JRC J-NAV 500 Instruction Manual page 31

GPS Navigator J-NAV500
A "t" after the figure for BRG, COG and CMG indicates true bearing, while "m" indicates that
magnetic compass correction has been made.)
Position fix status
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This position is displayed GPS position fix status.
When a problem has occurred in position fixing, HDOP, NO FIX or DGPS alarm is displayed.
For information on alarms, see Appendix A, "Message list."
• When a GPS/DGPS receiver cannot calculate the position after one position fix, the message
[ No Fix ] is displayed and the alarm sounds. The alarm sounds can be canceled by pressing
• The alarm sounds once when the DGPS receiver switches from DGPS position fixing to
GPS position fixing. (When DGPS alarm set.)
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Navigation alarm
Displays alarms by selecting.
• ARV (arrival alarm)
The alarm sounds and the characters ARV flash when the ship comes inside a set distance from a
waypoint.
• ANC (anchor alarm)
When the ship drifts beyond the set distance from a waypoint, the alarm sounds and the characters
ANC flash.
• XTE (off-course alarm)
When the ship strays off course by more than the set distance, the alarm sounds and the characters
XTE flash.
(See Section 4.8, "Setting Alarms (Arrival/Anchor/Off-course/DGPS).")
Canceling alarms
• Press to cancel the alarm sounds.
• To disable the alarm display, set 0.00 as the alarm range. (See Section 4.8, "Setting Alarms (Ar-
rival/Anchor/Off-course/DGPS).")
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