Koden CVS-852 - Page 63

Chapter 5 CVS-842/852/843
Basic Operation Operation Manual
5.9.2 Fish alarm
The Fish Alarm is an audio alarm, which is activated when fish echoes enter a predetermined depth
range or fulfill the predetermined threshold in terms of its signal intensity and length. Pressing any key
on the operation panel can silence the alarm. Further detection of echoes will activate the alarm again.
High
2001/05/23 (Wed)
Image Speed 1/1
14:22:56
Shift
000 0
The upper depth alarm
being set to 80.


200
0
50
150
100
Image feed direction
Unalarmed object:
This fish schoo
l
fulfilled the signa
l
threshold but, was
outside the alarm
range.
Unalarmed object: Thi
s
fish school is within the
alarm range but les
s
than the specifie
d
length.
This fish school activating the
alarm.
The fish alarm bar (white)
A
larmed object: This fish
school was inside of the
alarm range and fulfille
d
the signal threshold.
The lower depth alarm
being set to 180.
Unalarmed object: This fish
school was within the range bu
t
its color was set for rejection.
Figure 5.34 The Fish Alarm display
Setting procedure
Setting the Upper and Lower Fish Alarms:
(1) Press the MENU key to show the main menu.
(2) Press the up or down key to highlight FISH ALARM.
(3) Press the right arrow key to show FISH ALARM ON/OFF.
(4) Press the up or down arrow key to select FISH ALARM ON.
(5) Press the right arrow key to show UPPER FISH ALARM.
(6) Press the right arrow key to show the depth value window for UPPER FISH ALARM.
(7) Press the up or down arrow key to enter the MSB depth value.
(8) Press the right arrow key to shift the digit and again press the up or down arrow key to enter the
LSB depth value.
In a similar manner, set the Lower Fish Alarm.
When finished, the Fish Alarm bar will be set to indicate upper and lower alarm limit.
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