- Turn the Selection Switch for all unused Fish to the Off position.
- Push the Batt. Ck. momentary toggle switch upward, and note
that the Fish 1 meter reads .7 to 1 which indicates Batts are ok.
- Set the Sample Pulse Delay knob to 0 for fresh water, or to 4 for
salt water use.
- Turn the Selection Switch for Fish 1 to Cal. and adjust the Cal.
Adjust knob until meter reads approximately .3.
- Turn the Selection Switch for Fish 1 to Salt or Fresh position
(depending where you will be using the detector).
- Adjust the Zero Adjust knob for a meter reading of approximately
.1. The actual needle position is not important as long as it is
above zero. Some meter movement, especially while towing, can
be expected.
- Fish 1 is ready to go. Periodic adjustment of the Zero Adjust knob
may be necessary. Each time you turn on the Control Box, the Cal
should be rechecked for a reading of approximately .3. The above
procedure is repeated for each Fish.
- Before proceeding to connect up the remaining Fish ( if you have
them ), run some tests with a metal target ( gal can is fine ) to get
the feel of the Pulse 12. There is no need to move the coil, simply
move the target around, above or below the Coil.
DETECTING METAL
As metal passes near the Coil, the needle swings up. At about a .2
meter reading the audio sounds off and increases in pitch (fre-
quency) as the needle swings higher. Maximum meter swings
occur when the target is directly below the center of the Coil. As you
go past the target, the needle returns to zero and the audio stops.
TOWING
The Fish tows flat and directly below the boat. When searching in
water 6 to 75 ft deep this works quite well. The objective is to get
the coil as close to the bottom as possible so the target will not be
missed. The ideal tool to do this with is an Altimeter.
8
PULSE 12 CONTROL BOX
The heart of the system is the Control Box ( see Figure 6 ) which
contains all controls and indicators for the system. The Control Box
can handle up to three Fish. The Fish are interchangeable and can
be plugged into any Fish connector on the control Box. Each Fish
has its own controls ( Selection switch, Zero Adjust knob, and Cal
knob ), and meter which indicates a target has been detected by that
Fish.
5
• 24 vdc Input Connect this cable to 24 vdc (see Figure
7). Supplies power to the complete sys-
tem.
• Power On Switch Turns power on to the complete system.
• Power On LED Lights when power has been turned on.
Figure 6
4. If you have purchased the optional Altimeter, bolt it to the bottom
of the Fish. See the UA-2 operation manual for it's connection
and use.
J W FISHERS MFG INC
BERKLEY, MA 02779
65 ANTHONY ST
FISH 1 FISH 2 FISH 3
AUDIO
POWER
24 vdc Input
Speaker
Vol Control
Earphone Jack
Power On LED
Power On Switch
Batt Check Switch
Fish Connectors
Meters
Cal Knob
Zero Adj Knob
Selection Switch
Control Bo
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