Standard Horizon FF520 Owner's Manual page 36

7.2 WHAT ARE PRESET MODES?
Preset modes are pre-defined settings of the Fish Finder operating parameters. There are
five preset. You can use them to quickly set the Fish Finder in the most commonly used
operating modes. These are:
¨ CRUISE: sets the Fish Finder in full auto mode with the sensitivity settings (GAIN
OFFSET, NOISE level and STC) optimized for displaying at best the bottom.
¨ FISH: sets the Fish Finder in full auto mode with the sensitivity setting optimized for
target searching.
¨ AUTORANGE: sets the autorange mode and the manual gain mode.
¨ BOTTOM LOCK: sets the range mode to bottom lock and the manual gain mode.
¨ MANUAL: sets the range mode and the gain mode to manual.
7.3 HOW CAN I RESTORE THE FISH FINDER DEFAULT OPERAT-
ING PARAMETERS?
Simply select the CRUISE or the FISH preset. This will restore optimal operating parame-
ters for either cruising or fishing.
7.4 I'M USING THE FISH FINDER IN MANUAL MODE, HOW CAN
I SET THE PARAMETERS FOR OPTIMAL OPERATION.
Setting operating parameters for optimal operation depends upon environment conditions,
user feeling and intended usage of the Fish Finder (e.g. fishing or cruising), anyway a good
starting point is to select a full auto preset such as CRUISE or FISH and then, after waiting
a while to allow the echogram displayed to stabilize around the auto calculated parameters,
switch to the MANUAL preset mode. At this point it will be possible to fine tune the operating
parameters by slightly changing the auto calculated parameters.
7.5 CAN I ALWAYS LEAVE THE FISH FINDER IN FULL AUTO/
(AUTO GAIN AND AUTO RANGE) MODE?
Yes, but note that the full auto mode suits the 90% of the cases, however in extreme
situations the auto modes mail fail and thus it is necessary to switch to the Manual mode.
7.6 WHAT ARE EXTREME SITUATIONS IN WHICH AUTO MODES
MAY FAIL?
When the bottom is very deep, at high boat speed, when the bottom is very shallow (< 5
feets), when the water is full of materials in suspension, with bad sea conditions.
7.7 WHAT SHOULD I DO IF THE AUTO MODES FAIL?
Failure of auto modes can happen for various reasons. Hereafter you can find a range of
possibilities.
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