Specifications

ManualsBrandsEagle ManualsFish Finding SonarZ-15

Figure

—

paper transport assembly

down to

see the decal for the first time.

Push the

transport

closed and turn

on the unit.

(Caution

—

Keep

hands

away

from the

stylus

belt

and

stylus. High voltage

present.)

Insert a 6"-S"

long

screwdriver

with a 1/s" blade into the zero ad-

just

hole and rotate the control on

the circuit board until the zero line

is at the desired

position. (Note:

This

may

also be

adjusted

with

the unit turned OFF.

Adjust

the

control,

then remove the screw-

driver and turn

power

back ON.

Repeat

until the zero line is in

the desired

position.)

IV HOW TO READ

GRAPHS

"Arched

Signatures"

remarkable

advantage

of the

Z-15 is that it can record indi-

vidual fish with a characteristic

arched mark

that

separates

them

from their

stationary surroundings.

The reason for this is shown be-

low. The distance to a fish when it

moves into the sonar's cone of

sound is shown as 'A".

When the fish has moved to

the center of the

cone,

the dis-

tance to it will be

shorter, (line

"B"),

and as it moves out of the

cone,

the distance will increase

again

as shown in line "C".

—

Figure

If a

partial

arch occurs most of

the time on

your unit, (the

mark

curves

up,

but not back

down,

vice-versa)

is because the trans-

ducer is not

pointed straight

down.

your

transducer is

mounted on

the

transom,

adjust

the transducer

until the fish show the distinctive

arched

signature.

This

may

take

some trial and error until the cor-

rect

mounting

is achieved.

Sharp,

well defined

signatures

will occur most often when the

Sensitivity

knob is set at the ¾

point,

higher. Remember,

that

there must be some movement

between the boat and the fish to

develop

the arched mark.

Usually

this means

trolling

very

slow

speeds

with the main

engine

gear

at minimum throttle

setting.

THERMOCLINES

The

temperature

of water in the

lake is seldom constant from

top

to bottom.

Layers

of different tem-

peratures

form,

and the

junction

warm and cool

layer

of water

called a thermocline. The

depth

and thickness of the thermocline

can

vary

with the season or time

day.

deep

lakes there

may

be two or

more,

at different

depths.

Thermoclines are

import-

ant to the fisherman because

they

are areas where fish

are active.

Many

times bait fish will be above

the

thermocline

while

larger game

fish

suspend just

below it.

Your

Eagle

Z-15 can

de-

tect this invisible

layer

in the

water,

but the

Sensitivity

knob wifl

probably

have to be set at the 1/a

point,

higher.

PAPER LOADING

CAUTION

—

High voltage

pre-

sent in the electronic section

when the unit is turned on.

1. TURN THE UNIT OFF.

2. Release both catches on the

top

of the case. Pull

out and

down on the

top

the

case

front to

expose

the

platen

as-

sembly. (See Figure 23.)

3. Move the

stylus

belt

DOWN,

position

the

marking stylus

on the back side of the

pla-

ten. NEVER move the belt

—

the

stylus may

damaged. (See Figure24.)

SPECIAL

NOTE: The

stylus

may

damaged

if the

platen

assembly

pulled

down un-

less the

stylus

has been

moved to the back side of the

platen.

'UI

END-OF-PAPER MARKER

The

graph paper

in the Z-15

has a red line

printed

at the bot-

tom of

the

paper

signify

when

there is

only

2 to 3 feet before the

end of the

paper.

ZERO ADJUST

Occasionally,

when

changing

the

stylus

belt,

the zero

line does not

at the same

place

near the

top

of the chart

paper.

Figure

A zero

adjust

control has been

placed

on the back inside wall of

the Z-15 near the

upper

left

hand corner so that the zero line's

position may

adjusted

the

paper.

Open

the case front and look

for the decal marked "ZERO AD-

JUST". You

may

have to

pull

the

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Summary of content (12 pages)

PAGE 1
— papertransport assemblydown to see the decal for the first time. Push the transport closed and turn on the unit. (Caution — Keep hands away from the stylus belt and stylus. High voltage is present.) Insert a 6"-S" long screwdriver with a 1/s" blade into the zero adjust hole and rotate the control on the circuit board until the zero line is at the desired position. (Note: This may also be adjusted with the unit turned OFF. Adjust the control, then remove the screwdriver and turn power back ON.
PAGE 2
LIO.._.____.._...__..____ ..__._____LjQ._ -- 9LJ — 'ID -- 52 -—-_.. 9L —— ---——--—---'IE — - —-—-52— s— —-—-U bO—D—I---——--D Figure 23 Figure 17 Figure 24 4. Pull out and down on the tab at the top center of the platen assemblyto expose the paper spools. (See Figure 25.) 5. To removethe full take-up roll and the empty supplyspool, press the two metal tabs together on the top of the platen assembly, and pull out and down on the paper retainer. (See Figure 26.
PAGE 3
-— -—-- -—--- -- -JO ------ — -—-—— —— hi] -- — - —-—-----—- MR U 90-- inn u—i - '50 - fl—I -- 120— I: 'SI]— Figure 13 Figure 15 Example: Change range to 0-80 feet. Press: 8 - 0 - LOWER LIMIT pand a section of the area that is displayed on the graph recorder to show more detail. This is made possible by the Z-15 to show segments of the underwater world by using the UPPER LIMITfunction.
PAGE 4
er fish arches at low speeds and STYLUSREPLACEMENT — High voltage is present in the electronic section when the unit is turned on. 1. TURN THE UNIT OFF. CAUTION 2. Release both catches on the top of the case. Pull out and down on the top of the case front to expose the stylus belt. (See Figure25.) 3. The stylus belt rides over two wheels located at the right edge of the platen assembly. Move the front of the belt DOWN to position the stylus at the center of the platen. 4.
PAGE 5
ratic, unwanted noise marks. Most of the time at low or trolling speeds, no suppression will be necessary. Figure 33 Figure 34 Figure 7 ILl Figure 9 29 SUPPRESSION: TOO HIGH l pr U 10 Figure 8 sensitivity in any way. This patented design is exclusive with Eagle. However,with high suppression settings, the graph record becomes coarse and the ability to separate fish from the bottom or from other fish will be decreased. (See Figure 9 &1O.) Therefore, the lower the suppression setting, the better.
PAGE 6
and the water. wheels by reversing the procedure used to remove the old one. BE SURE the fingers of the new stylus are pointed UP 6. Close the front of the case. Latch both catches at the top of the unit. thermocline is desired,the Sensitivity knob should be rotated to approximately the ¾ point. Refer to the illustration below to see DO SECTION Do carry a spare fuse, stylus belt, and roll of paper. Do use the empty cardboardcore from the last roll of paper on the take-up post.
PAGE 7
TRANSDUCER SELECTION Eagle offers you the choice of transducers with either an B degree or 20 degree cone angle that will interchange with any of our 192 kHz sonar units. In other words, any Eagle sonar instrument can be used with any Eagle transducer of the same frequency without retuning of any kind, and no loss of performance. However, the use of any other manufacturer's transducer will result in a loss of performance.
PAGE 8
Feet. Fathoms, Meters The Z-15 will display the depth in feet, fathoms, or meters. Although the unit will revert back to the feet mode whenever power is turned off, it is simple to change to any mode you wish by pressing the 2nd key and then 1 for feet, 2nd - 2 for fathoms, and 2nd - 3 for meters. When the unit is in the Feet mode, only one I.! will be displayed. In the Fathom mode, two L's will be displayed. Three U 's will be displayed in the meters mode.
PAGE 9
to move down the edge of the 1. INTRODUCTION The Eagle Z-15 is a highly sophisticated recording depth sounder. Thanks to a micro-computer, the Z-15 can do more than any other sonar unit in its price range plus many that cost much more, Thanks to a waterproof keyboard, full control of the system is at your fingertips to meet the changing demandsof varying bottom conditions, water depth, and boat speed.
PAGE 10
resolution. For example, if a 50 lAs initial transmitter pulse length is selected, and the Suppressor control is rotated to maximum, the transmitter pulse length would be 850 jis. Returning the Suppressor control to minimum will restore the unit to a 50 lA5 transmitter pulse length. The Z-15 will display the initial transmitter pulse length at the bottom of the paperwhen you override the micro-computer.
PAGE 11
IIfl I.In LI A Specifications Service Information Introduction 1 1 How It Works 2 2 Installation 3 Transducer Selection Basic Operation 4 4 Suppressor 5 Paper Speed 6 GRAYLINE® 7 Range Lower Limit Upper Limit 7 Lines 9 9 e Marker 7 B Scale End Of Paper 10 Zero Adjust .. . 10 How To Read Graphs. 10 Paper Loading 11 Stylus Replacement 14 Stylus Belt Replacement....
PAGE 12
To turn this feature on, simply press the 2nd key, then press the "4" key. The paperspeed will immediately slow down, signifying that the function is enabled. To turn the Alternate Transmit and Print feature off, simply press the 2nd key and then press the "7" key. The paper speed will immediately speed up, signifying that the function has been turned off. When entering any number or combination of keys on the keyboard and you make a mistake, press the 2nd KE'yç then 0. This will clear the keyboard.