background image

15 

How the Positive Ion Control System Works 

 

The PIC system uses an internal circuit that 

passes the voltage through the drive train of the 
Mag 20 DT to the reel set screw. The set screw 
contacts the cable. Care must be taken to ensure 
contact between the cable and the set screw 
when replacing the cable. 
 

The positive Ion Control system applies a 

variable 0.2 to 1.2 volts on the trolling cable at all 
times. To adjust the Positive Ion Control, simply 
turn the PIC knob on the back of the Mag 20 DT 
housing (see below). 

 

Measuring the Natural Electrolysis and PIC 
Voltage on Your Boat 

 

A voltmeter with a scale of zero to one volt will 

measure the natural electrolysis. Place the ground 
lead of the meter on the motor or the battery 
ground. Place the positive lead on the stainless 
steel downrigger cable while it is in the water. The 
downrigger must be unplugged. The voltage you 
measure on the volt meter is your boat’s natural 
electrolysis voltage. Use the same set up to 
measure the PIC voltage; just plug in the Mag 20 
DT and adjust the PIC knob to the voltage 
desired. 

 

Using Positive Ion Control 

 

Positive Ion Control is very effective when 

trolling. The zone of attraction created at the 
downrigger wire will attract the fish. It is best to 
use a short drop back between the downrigger 
release and the lure. Drop backs of 10 to 20 ft. are 
typical. A drop back of 50 to 100 ft. will entirely 
negate the effects of the PIC circuit. Fishing 
depths greater than 125 ft. may require a slightly 
higher PIC voltage. If you return to shallow water 
fishing remember to turn the PIC voltage down 
again. 
 The correct PIC setting for your best fishing 
advantage varies, depending on fish type and 
location. For example, the proper setting for Puget 
Sound Steelhead may not be effective for Great 
Lakes Steelhead. To fully benefit from PIC 
technology, it is important that you experiment 
with the PIC setting to find the proper voltage for 
the gamefish in your area. For more information 
on this subject, refer to “Secrets of Fishing with 
Electricity” by Ollie Rode. 

 

Positive Ion Control 
(PIC) Knob

 

Data Out 

Data In 

POSITI

VE ION 

CON

T

ROL 

Summary of Contents for Mag 20 Dt/Hs

Page 1: ...ns CAUTION READ THIS MANUAL CAREFULLY BEFORE OPERATING YOUR NEW CANNON DOWNRIGGER RETAIN FOR FUTURE REFERENCE MAG 20DT ts Introduction to Downriggers pg 2 MAG 20 DT New Features pg 3 Mounting Your Dow...

Page 2: ...Michigan introduced Pacific salmon into the Great lakes in an attempt to revitalize its sport fishing industry From this successful transplant new fishing techniques and equipment were developed One s...

Page 3: ...pin plugs into the fish finder communication port Additional Mag 20 DTs are connected to each other in a chain with the 019634 Mag 20 Remote Cable The last downrigger in the chain must be terminated w...

Page 4: ...at the junction of two rail sections with the aid of two pieces of plywood They will protect your rail from any marks from the clamp and provide a non slip surface Arrows Indicate Mounting Locations D...

Page 5: ...so recommended to install two additional flat head screws through the top plate for stabilization you will need to drill and countersink NOTE In no case should this mount be used on fiberglass thick o...

Page 6: ...on Your Boat Decks up to 7 16 thick Where access to the underside of the deck is not available the mounting base can be mounted using wellnuts Use the base as a template to mark locations and drill f...

Page 7: ...ndard 24 Inch Boom inserts into the downrigger frame Be sure that the boom is held securely by seating it firmly against the shoulder inside the fame and fastening the boom locking screw such that it...

Page 8: ...ap Swivel Tip A set of pliers with wire cutters is recommended for this part of setup Examine the top of the terminator and note the order shown in the detail to run cable Unwind about 2 feet of cable...

Page 9: ...5 degree increments Slide the rod holder tube into the clamp to the desired position within the recommended area see below Be sure the angled shoulders are facing up Place the locking disk into the ma...

Page 10: ...e the sacrificial zincs are replaced when half dissolved This ensures that the boat will run with a neutral or slightly positive charge Clean zincs on a regular basis with a non corrosive brush Always...

Page 11: ...tually all the time See below for the recommended wiring setup NOTE To ensure proper operation of your Mag 20 DT ground its battery to your boat s electrical system s ground Malfunctions with the PIC...

Page 12: ...n on your rod and reel Lowering the Weight The Mag 20 DT can lower the trolling weight manually or powered Manual Descent Fast or Slow By turning the clutch knob gently clockwise toward the boom you c...

Page 13: ...aft hole not just be tightened against the shaft Caution The brake adjust knob clutch should be adjusted so that it is tight enough to hold the weight and the lure at the speed you are trolling Over t...

Page 14: ...r 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 Posi...

Page 15: ...t up to measure the PIC voltage just plug in the Mag 20 DT and adjust the PIC knob to the voltage desired Using Positive Ion Control Positive Ion Control is very effective when trolling The zone of at...

Page 16: ...no lures attached and with no current Current drag water salinity and the use of non Cannon products will affect your actual trolling depth As an example the first chart shows that if you are trolling...

Page 17: ...e the set screw 3 Align the set screw hole in the reel with the hole in the reel shaft by inserting a 3 16 or smaller rod and rotating the reel until you feel it drop into the shaft hole 4 Replace the...

Page 18: ...e fish on a vertical plane Place lures in areas where fish might be Skilled fishermen call these areas the strike zones They include the edges of the week beds structure along bottom drop offs preferr...

Page 19: ...states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of consequential damages so the above limitation or exclusion may not apply to you This warranty g...

Page 20: ...001 810 794 5951 MINNESOTA Electrotech 1332 E 4th St Duluth 55805 218 727 8919 Lake of the Woods Marine 3208 Bur Oak Rd Baudette 56623 213 634 2289 NEVADA Pyramid Lake Store 29555 Pyramid Hwy Sutcliff...

Page 21: ...TM MAG 20 DT HS 1902200 Form No 3394903 Rev 12 06...

Page 22: ...UBE CLAMP 24 2286792 SWITCH UP DN CONTROL 65 9010002 BEARING MOTOR SHAFT 106 2219823 MID TUBE CLAMP 25 2286793 WASHER SHIM 750 x 1 UP DN SWITCH 66 2263112 NUT HEX 10 32 BZ 107 2222825 MID TUBE COLLET...

Page 23: ...TM MAG 20 DT HS E 1902201 Form No 3394922 Rev 12 06...

Page 24: ...TELESCOPIC BOOM 24 3395702 DECAL POSITIVE ION CONTROL 65 700032 TERMINAL MOTOR FEM 12 10 2 EA 106 2219822 BASE TUBE CLAMP 25 2286792 SWITCH UP DN CONTROL 66 9010002 BEARING MOTOR SHAFT 107 2219823 MID...

Page 25: ...TM MAG 20 DT TS 1902205 Form No 3394908 Rev 12 06...

Page 26: ...N CONTROL TS 62 1497070 GEAR WORM MOTOR 101 2219823 MID TUBE CLAMP 24 2286792 SWITCH UP DN CONTROL 63 9250001 PIN MOTOR 3 32 X 3 4 ROLL SS 102 2222825 MID TUBE COLLET 25 2286793 WASHER SHIM 750 x 1 UP...

Page 27: ...TM MAG 20 DT TS E 1902206 Form No 3394921 Rev 12 06...

Page 28: ...T TS 63 1497070 GEAR WORM MOTOR 103 2222825 MID TUBE COLLET 24 3395700 DECAL POSITIVE ION CONTROL TS 64 9250001 PIN MOTOR 3 32 X 3 4 ROLL SS 104 2222826 BASE TUBE COLLET 25 2286792 SWITCH UP DN CONTRO...

Reviews: