B&G H5000 Pilot Computer - Manual (Page 96)

96 | Operating variables | H5000 Operation Manual
Tide set and rate
The system calculates current fl ow by comparing the Boat Speed and Course (which are
measured relative to the water) to the ground referenced data (SOG and COG) from a GPS.
This calculation therefore includes all water motion including both tides and permanent
currents.
As the calculation utilizes the Course function its accuracy can be enhanced by the use of a
Heel Angle sensor and accurate Leeway calibration.
¼ Note: If your position fi xer sends magnetic bearing, check that the variation is correctly en-
tered (or calculated) in the position fi xer.
Importantly the damping on this function is adjustable, in rapidly changing tidal situations
you need to lower the damping down as far as possible to be able to see the changes quickly.
However in stable conditions, probably off shore, averaging the data over a longer time will
normally give a more stable, accurate fi gure. In addition note that particularly frequent
manoeuvring can produce unreliable fi gures due to the lag in update from position fi xing
devices.
Variable name (default)
Function name
Tide Set (T SET), Tide Rate (T RTE)
TIDE SET, TIDE RTE
Units ºM, ºT, nm
Alarms N/A
Calibration Magnetic Variation
Damping 0-24minutes, 15seconds increments
Timer
The system Timer can be used for either countdown or as a straight-forward stopwatch.
¼ Note:
If your position fi xer sends magnetic bearing, check that the variation is correctly en-
tered (or calculated) in the position fi xer.
Variable name (default)
Function name
Timer
TIMER
Units hh:mm:ss
Alarms Countdown bleep via Audible Alarm
Calibration Set countdown period
Damping N/A
Time to layline
The information displayed shows the time to go before reaching the appropriate layline.
A value of zero indicates that the layline has been reached. P and S are shown on Graphic
Display to indicate time on each layline. Race Display only shows current layline.
¼ Note:
This data is provided by Zeus MFD, normally using arbitrary tacking angles, as such it
should only be considered an approximation.
Variable name (default)
Function name
Time to Layline (tLL)
L/L TIME
Units hh:mm:ss
Alarms N/A
Calibration N/A
Damping N/A