B&G HS2000 - Manual (Page 24)

HS 2000 User Manual
Part 2 - Operating Information
HB-0846-03
2-11
DATUM is referenced to the keel line, the value is negative, which is
indicated by a minus sign before the left hand digit.
(7) Press Enter to input the new DATUM value into the
system.
(8) Press Page to return to the normal display.
2.6 ALARMS
2.6.1 Alarm Control
When a pre-set alarm parameter is reached, for example, the depth
reducing, the system raises an alarm automatically. In an alarm
condition, the lower display changes to highlight the cause of the
alarm, which flashes red and green alternatively until the Enter Key
is pressed twice. At which point all FFDs, with the exception of the
FFD on which Enter was pressed, return to normal. The audible
alarm, if fitted, is also silenced by this operation. After this, the lower
display continues to monitor the alarm condition. The alarm is still
active; if the alarm parameter is again exceeded the alarm will
flash/sound as necessary. The displayed alarm function remains on
the lower display until Page is pressed.
2.6.2 Alarm Types
The system incorporates the following types of alarm:
HI ALARM - This is generated if the value of a function
exceeds a pre-set level.
LO ALARM - This is generated if the value of a function
drops below a pre-set level.
SECTOR ALARM - This is generated when the value of a
function leaves the safe sector as shown in Fig 2.2.
Fig 2.2 - Sector Alarm