NAVMAN
8120/8084
Installation and Operation Manual
81
19-5 Setup > GPS
Press
MENU
twice, then select
GPS
:
GPS Source
•
NMEA
: Use the external GPS antenna
supplied or an external GPS or DGPS
source connected via NMEA (see section
20-12).
•
NavBus
: Use an external GPS or DGPS
source connected via NavBus (see section
20-11).
DGPS Source
Refer to section 20-5
Restart GPS
Refer to section 20-5
Static Navigation
When the boat stops or moves very slowly,
the calculated GPS speed and course become
erratic. Static navigation allows the erratic
values to be filtered:
• 0.01 to 99.9: If the boat speed is slower
than this, the speed is displayed as zero
and the course stays unchanged.
• 0 (Off): The calculated speed and course
are always used.
Speed and Course Filter
Waves and wind cause the boat speed and
course to fluctuate slightly. To give stable
readings, the Instrument calculates these
values by taking several measurements and
averaging them.
A lower value averages measurements
over a shorter period of time. This gives
the most accurate value but has the most
fluctuations.
A higher