NorthStar Navigation Echo Sounder NorthStar 491 - Manual (Page 17)

491 Echo Sounder Operations Manual Page 13
real-time echoes. For details, see “Reviewing past echoes using
SoundTrac” starting on page 51.
Figure 7: Illustrated SOUNDTRAC screen
NOTES:
All of the alarm messages always appear on all of the echo
sounder’s screens. You won’t miss any alarms while displaying
echo sounding data, and you never have to press any keys to view
the current alarms (although you must press
STAR to clear alarms
that don’t automatically clear).
The SAVE and MOB functions always work normally. Moreover,
on the 961/962, whenever you press either of these keys, the corre-
sponding
*SAVE##* or *MOB##* waypoints will be displayed
automatically on the echo sounder’s picture, as well as on the
CHART screen (after you press CHART ).
Depth Scale
Depth
box
Water
temperature
box
Water
temperature
scale
Depth
marker
and
indicator
Echo data
Lat/lon of
position
marker Dist/brg to
position
marker Steering indicator Speed, course, and speed
through the water
Color
bar
Position
marker
and
indicator