Humminbird 425 SX Operation Manual page 22

USING THE 425SX
MENU FUNCTIONS
then intermittently to remind you that you are still in shallow water. Additionally,
the 425SX can anticipate quickly changing terrain and sound the Depth Alarm
before the bottom depth actually reaches the preset alarm depth.
Fish Alarm. The Fish Alarm alerts you to the
presence of fish, or other targets not connected
to the bottom. The Fish Alarm has three
different settings that correspond to the three
different size fish symbols shown on-screen.
The default setting is "OFF." With the "Large
fish only" setting, the 425SX alarms on only
those targets that are represented by the large
fish symbols. The 425SX can be set to alarm on
only large and medium fish, or set to alarm on
all fish.
Once the Fish Alarm is enabled, the 425SX emits
an audible beep when the selected size fish
symbol appears on-screen. The sound is slightly
different for each of the three fish symbol sizes, so
with practice, it is possible to distinguish the size
of the detected fish without looking at the unit.
Fish Alarm settings are remembered when the
unit is powered off.
Triplog. Triplog provides a running log of
information based on input from the
Temp/Speed sensor.
Since Triplog requires information from
the Temp/Speed sensor to operate, if this
sensor is not detected by the 425SX, the
Triplog menu will not appear as an
option.
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