TM 5-1940-322-10
0039 00
OPERATION OF SPECIAL PURPOSE KITS (Contd)
DEPTH SOUNDER GENERAL INTRODUCTION
The Simrad IS12 System is a flexible modular series of instruments that offer large,
clear displays, easy to operate functions and robust, and weatherproof construction.
DEPTH SOUNDER OPERATION
Water Depth
On power up, the current water depth is shown.
In this example, the depth is displayed in meters (13.9m). The Depth Sounder can
display depth in feet or meters. The arrow in the top line of the display indicates the
trend (up or down).
NOTE
Refer to Turbulence & Signal Acquisition within this
work package for further information on how the depth
sounder will behave if the depth signal is lost. As default,
the Depth Sounder will display the depth below the
transducer.
An offset can be entered so that the display shows either
the depth below the keel or the waterline depth. Refer to
Off Set within this work package for more details.
Alarms
The Depth Sounder features an audible alarm function that can be set to alert if the
water depth falls below or above a specified value. This is a useful function to avoid
the boat running aground in shallow water, or straying into deep water.
NOTE
The alarms will sound for 15 seconds when triggered by
the alarm condition (unless manually muted), then sound
again after a 15 second pause and continue in this
pattern until the water depth is once again within the
specified parameters.
0039 00-3
