B&G HS2000 User Manual
Page 40
HS 2000 User Manual
Part 3 - Calibration
HB-0846-03
3-4
3.2.3
Calibration Runs
Consecutive runs at a constant speed should be made over a
known distance. To eliminate the effect of tidal conditions, it is
advisable to perform at least two runs, preferably three, along the
measured track. There are three available options for calibrating
the log; Automatically (AUTO CAL), Manually (MANL CAL) or
Reference (REF CAL).
3.2.4
Log AUTO CAL Facility
This facility enables the user to calibrate the boat’s log accurately
and simply as all calculations are performed internally by the HS
2000 computer. Referring to Fig 3.1, A and B are the two markers
for each run and X is the actual distance for each run as
ascertained from the chart.
Fig 3.1 - Log Calibration Runs
The user is required to enter the distance X in nautical miles (CAL
DIST) and then, as the boat passes marks A and B on each run,
to instruct the system to start (STRT RUN) and stop (STOP RUN)
and finally to end calibration (END CAL) after the last required run
is complete.
Note
The calibration process can be canceled at any time during the
operation by pressing the Page Key if the operator is not satisfied
with the calibration runs, for example, when hampered by another
vessel or wash.