Quantity
Description
Use
2 each
114 - 20 x 3/8" slotted
Attaching panel/bulkhead mounting
pan-head machine screws
adapter flange to case
4 each
#6 x 1/2" Phillips oval-
Attaching panel/bulkhead
head self-tapping screws
mounting adaptor flange to panel
2 each
#10 x 3/4" slotted pan-
Attaching U-mounting bracket to
head self-tapping screws
surface
2 each
Thumb screws and rubber
Attaching U-mounting bracket
washers
to case
Note: additional hardware is provided for mounting the transducer to the boat, as noted in the TRANSDUCER
MOUNTING section of this manual.
As noted above, any Aqua Probe digital unit is designed
to operate from a standard 12V-DC, negative ground
marine electrical system. This type of system actually
can provide a range of voltage between 11 and 16 volts,
depending on the condition of the battery and the
alternator charging characteristics. The normal voltage
of such a system may average about 13.6V-DC.
Your Aqua Probe digital is designed to operate normally
within that 11 to 16V-DC power range. However,
operation outside of that range could cause damage or a
degredation in performance.
IMPORTANT: AN EXTERNAL FUSE IS REQUIRED.
Because fuse or circuit-breaker panels commonly are
used on modern boats, there is no internal fuse or circuit
breaker in your Aqua Probe digital depth instrument.
Although the normal, average current requirement of
these units is only about 0.2 amp (0.3 amp with the night
light on), there will be a current surge which occurs
rhythmically during the "transmit" phase of depthfinding
operation. The pulse can be on the order of several
amperes. Accordingly, a ONE-AMPERE, SLOW-BLOW
FUSE or 2 AMP REGULAR FUSE should be used. It
should be installed in the positive ( + ) power line to your
unit.
ELECTRICAL INTERFERENCE: There will always be
electrical interference present from your boat's ignition
and charging systems, other electronic equipment, or
miscellaneous electrical devices such as bilge pumps,
bilge blowers, or automatic pilot. Without reasonable
proper precautions, this interference may cause random,
false, and inaccurate depth readings on your Aqua
Probe digital depth instrument.
This interference can "contaminate" the depth finder in
several
ways.
The
most
common
source
of
contamination is power line interference. To avoid this, it
is best to provide separate power wiring for the
depthfinder, (or any electronic accessories for that
matter) directly from the battery to the operating console.
This may already be installed for instruments of similar
types. Refer to your boat owners manual.
Do not use the "accessory" terminal of the ignition
switch. Be sure that the power line is of adequate size
(see the chart on page 7) to conduct the necessary
amount of power, and is routed through the boat in such
a way that it is kept apart from ignition, charging, or other
circuits.
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