B&G H2000 Pilot *DISCONTINUED* - Manual (Page 72)

h2000 User Manual
72 HB-0845-06
2.9.45 Tide Set and Rate
Menu heading: NAVIGATE
Function text: TIDE SET or TIDE RTE
Update
rate: 1Hz
Units: ºM or ºT, knots
Notes
1. Damping 0-99 minutes.
2. Calibration: Magnetic variation.
Some position fixers output the current local magnetic
variation on the NMEA 0183 port using either HVD, HVM,
RMA or RMC sentences. As a result, CAL VAL1 on the
TIDE SET function will be automatically set to the correct
variation.
Your position fixer will either supply true or magnetic
bearing to the h2000. If it supplies true bearing then you
must enter the magnetic variation into the h2000. It is found
in the menu under:
NAVIGATE
→
TIDE SET, CALBRATE
→ → → →
CAL VAL 1 (MAG VAR)
Note
1. If your position fixer sends magnetic bearing,
check that the variation is correctly entered.
The calculation involves comparing the course and speed
over the ground, from the position fixing system, to the
course and speed of the boat through the water, from the
dead reckoning. Any differences are due to the tidal set and
drift, and can be displayed as such. To make this accurate
the dead reckoning requires the leeway input which in turn,
requires the clinometer to measure heel angle.