2 ST60 Depth Instrument Owner’s Handbook
Alarms
An alarm condition occurs if:
• The depth is less than the SHALLOW or SHALLOW anchor threshold.
• The depth is more than the DEEP anchor threshold.
• The DEEP threshold value is crossed, with the seabed rising or falling.
An alarm condition is indicated by an audible beep and a flashing alarm symbol
on the display. The display will also show the relevant caption, either SHALLOW
or DEEP, and for anchor alarms an anchor symbol.
When the instrument is operating as a master, you can check the alarm thresholds
and if necessary set them up (see
Alarm thresholds
flow chart). To do this, use the
alarm key to select the required alarm threshold, then:
• To enable or disable the alarm, press the
reset key for 1 second. If an alarm is
disabled, the associated screen shows an OFF legend.
• To change the value of the alarm threshold, press the offset and reset keys
together to enter adjust mode, then use these keys individually to set the
required value.
Switch on
Current
depth
Minimum depth
Maximum depth
Reading depth values
Press
for 3 s to reset
MIN or MAX display
D4347-1
depth
reset
depth
depth
81038_4.book Page 2 Wednesday, March 24, 2004 3:17 PM
