Depth Alarm; Fish Alarm - Humminbird 100SX Single Beam Operation Manual

Once "Manual" Zoom is selected, the display will appear the same as in "Auto" Zoom, but the
zoom range does not change automatically. If further adjustment of the zoom range is necessary,
pressing either ARROW button while Zoom is active will move the Zoom range up or down. The
Menu returns briefly to show the numeric values as the adjustment is made.
To disable Zoom, press the MENU button until the Zoom menu is onscreen. Use the UP ARROW
to highlight Off, and let the menu time out.
When the unit is powered off, the Zoom menu returns to Zoom Off.

Depth Alarm

The 100SX contains an audible alarm to warn you of shallow
water depths. The alarm is adjustable from 2' (.6m) to 99' (30m)
of depth. When the alarm is enabled, an audible alarm is sounded
if the water beneath the boat is equal to or less than the selected
alarm depth. Upon activation, the alarm sounds continuously for
about 5 seconds, and then intermittently to remind you that you
are still in shallow water.
To enable Depth Alarm, press MENU repeatedly until the Depth
Alarm menu is on-screen. The Factory Setting is "Off". Use the
DOWN ARROW to highlight On. The menu will expand to show
the current Depth Alarm setting. Use the UP or DOWN ARROW
to set the desired depth for alarm activation.
Once the menu times out, the Depth Alarm is enabled. To further
adjust the setting, simply press the UP or DOWN ARROW. The
menu appears briefly to indicate the setting. If the alarm is
sounding and you want to disable it, use the MENU button to
bring the Depth Alarm menu on-screen, and the UP ARROW to
highlight "Off".

Fish Alarm

The Fish Alarm alerts you to the presence of fish, or other targets
not connected to the bottom. The Fish Alarm has 3 different settings
which correspond to the 3 different size fish symbols shown on-
screen.
To enable Fish Alarm, press the MENU button repeatedly until the
Fish Alarm menu appears on-screen. The menu shows two options, "Off" (Factory Setting) and
"On". Use the DOWN ARROW to highlight "On" and the menu further expands to show the 3
alarm options. The selected setting will be "Large fish only". With this setting, the 100SX alarms
on only those targets which are represented by the large fish symbols (see Interpreting the On-
Screen Information). Pressing the DOWN ARROW again highlights "large and medium fish" and
pressing a third time highlights "large, medium, and small fish). With this setting, any fish symbol
appearing on-screen activates the Fish Alarm.