Lowrance X87, Operation Instructions Manual

Page: 50 / 92

46
5. Press
EXIT
|
←
to
Z
ONE
A
LARM
E
NABLED
|
ENT
|
EXIT
. Now, any echo —
fish, bottom, structure — within the zone alarm's depth range will trig-
ger the zone alarm.
6. To turn off the alarm, press
A
LARM
|
↓
to
Z
ONE
A
LARM
E
N-
ABLED
|
ENT
|
EXIT
.
To switch to a different depth setting, open the Sonar Alarms menu and
repeat the instructions in steps 3 and 4 above.
Fish Alarm
Use the fish alarm for a distinctive audible alarm when fish or other
suspended objects are detected by the Fish I.D.

feature (Fish I.D.
must be turned on for the Fish Alarm to work). a different tone sounds
for each fish symbol size shown on the display.
Sonar Alarms menu with Fish Alarm selected. The check box to the left
is blank, indicating the alarm is turned off.
To turn the fish alarm on:
1. Press
A
LARM
.
2. Press
↓
to
F
ISH
A
LARM
|
ENT
|
EXIT
.
3. To turn off the alarm, press
A
LARM
|
↓
to
F
ISH
A
LARM
|
ENT
|
EXIT
.
Brightness
See the entry in this section for Screen Contrast and Brightness.
Calibrate Speed
The speed sensor can be calibrated to compensate for inaccuracies. Be-
fore you change the setting, first calculate the percentage that the
speed is off. You will enter this percentage in a moment.
For example, if you figure the sensor is reading 10 percent faster than
actual speed, you will enter – 10 in the calibration window. If the sen-
sor is reading 5 percent slower than true speed, you will enter + 5 in
the window.