18
The Positive Ion Control System
Your boat has an electrical charge around the
hull in water. If a boat is properly bonded and
properly zinced, that charge should be slightly
positive when measured from ground to the
downrigger cable. Positive Ion Control (PIC) is the
use of electricity to control that charge and its
fluctuation so that it is always maintained at a
specified set voltage.
The practice of setting up and maintaining a
slight positive charge on fishing gear has been
used by commercial fishermen for many years.
This practice has enabled some fisherman to
increase yield when used along with other good
fishing and boating practices.
Cannon's electric downriggers offer fishermen
a big advantage in being able to stabilize and
control the positive charge around their boat.
Because of the Lexan® construction of the frame,
Cannon downriggers are insulated from your
boat's hull charge.
When the stainless steel downrigger cable is
lowered into the water, the natural ionization
between the cable and the boat creates a positive
charge of 0.7 to 0.9 volts in saltwater and 0.3 to
0.6 volts in fresh water. This natural voltage is
dependent upon salinity and mineral content of
the water. Your actual voltage may vary.
Fishing With Your Downrigger
After programming your Digi-Troll IV, release
some line from your rod and reel so that the lure is
anywhere from 5 to 100 feet behind the boat. This
is called drop back. Attach the fishing line firmly
into the line release. Press and hold the down key
to lower the weight to the desired depth as
indicated on the display or select a pre-
programmed weight depth. Place the fishing rod in
the rod holder and reel up the slack so that your
rod has a slight bend in it. When a fish strikes the
lure, the line will separate from the release. Then
you will be free to fight the fish and bring it in on
your rod and reel.
Manual Descent
By turning the clutch knob gently clockwise
(toward the boom), you can let your trolling weight
descend as fast or as slowly as you wish. Turning
the knob counterclockwise (away from the boom)
stops the weight. This gives you control to let it
plunge rapidly or sink slowly to a predetermined
trolling depth. With multiple downriggers, you
could start all your weights creeping down, one at
a time, and then stop them each in turn.
Note: In order to track your weight depth your
Digi-Troll IV must be turned on.
To Lower
Weight
PIC Control Knob
Data Out
Data In
Transducer Input
OPE
R
A
TING
YOUR D
O
WNRI
GGE
R &
POSITI
VE ION
CONTROL
AnglingOutpost.com
1-888-356-5022
AnglingOutpost.com
1-888-356-5022
