Standard Horizon CP1000C User manual

FF520
50/200kHz BLACK BOX FISH FINDER
Owner's Manual

Page 4 FF520
Congratulations on you purchase of the FF520!
The STANDARD HORIZON organization is committed to ensuring your enjoyment of this
unit. STANDARD HORIZON technical support personnel stand behind every product we
sell, and our Product Support team invites you to contact us should you require technical
advice or assistance, at 800/767-2450.
FCC Compliance Statement
This device complies with Part 15 of the FCC limits for Class A digital devices. This
equipment generates, uses, and can radiate radio frequency energy and, if not
installed or used in accordance with the instructions may cause harmful interference
with radio communications.
There is no guarantee that interference will not occur in a particular instance. If this
equipment does cause harmful interference to other equipment, try to correct the
problem by relocating the equipment.
Consult an authorized STANDARD HORIZION dealer or other qualified service
technician if the problem cannot be corrected. Operation is subject to the following
conditions: (1) This device cannot cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause
undesired operation.
CAUTION
- The FF520 is designed for maritime use.
- Extensive exposure to heat may result in damage to the FF520.
- The FF520 contains dangerous high voltage circuits which only experienced
technicians can handle.
- STANDARD HORIZON will not be liable for errors contained herein, or for
incidental or consequential damages in connection with the performance or use
of this material.
Copyright 2005. STANDARD HORIZON All rights reserved. Printed in Italy.
No part of this publication may be reproduced or distributed in any form or by any means, or stored in a database
or retrieval system, without prior written permission of the publisher.
CODE: Issue D - 050505

FF520 Page 5
TABLE OF CONTENTS
1. INTRODUCTION ........................................................................................................ 7
1.0 GENERAL INFORMATION ............................................................................... 7
1.1 PACKING LIST ................................................................................................. 8
1.1.0 FF520 Packing List .............................................................................. 8
2. MOUNTING THE FF520 ....................................................................................................... 9
2.0 INSTALLATION ................................................................................................. 9
2.1 CONNECTIONS ................................................................................................ 9
2.2 CONNECTING THE GPS CHARTPLOTTERS TO THE FF520 .................... 10
2.3 OPTIONAL CONNECTIONS .......................................................................... 11
2.3.0 NMEA Output ..................................................................................... 11
2.3.1 Alarm Buzzer ...................................................................................... 11
2.3.2 Second temp sensor .......................................................................... 11
2.3.3 LED Status Indicator .......................................................................... 11
2.4 POWER CONNECTIONS ............................................................................... 12
2.5 GPS CHARTPLOTTERS SOFTWARE UPDATE .......................................... 12
2.5.0 Backing up Marks and Routes ........................................................... 13
2.5.1 Installing Software .............................................................................. 13
3. FISH FINDER ...................................................................................................... 15
3.0 UNDERSTANDING THE FISH FINDER PAGE ............................................. 15
3.0.0 Understanding the Fish Finder display .............................................. 17
3.1 DISPLAYING THE FISH FINDER PAGE ....................................................... 18
3.1.0 Menu selection (all GPS chartplotters) .............................................. 18
3.1.0a Customizing the Fish Finder menu selection .................................... 19
3.1.1 Soft Keys (CP175C and CP1000C) ................................................... 19
3.1.1a Customizing the Soft Keys ................................................................. 19
3.1.2 Key Operation when Fish Finder page is shown ............................... 20
3.1.2a The MENU key ................................................................................... 20
3.1.2b The ENTER key ................................................................................. 21
3.1.2c The CLEAR key ................................................................................. 21
3.1.2d The ZOOM IN and ZOOM OUT keys ................................................ 21
3.1.2e The MARK key ................................................................................... 21
3.1.2f The SHUTTLEPOINT knob ................................................................ 21
3.1.2g Controls on Chart page or Fish page in Chart/Fish dual mode ......... 21
3.1.3 Sounder Adjustments with Soft Keys (CP175C and CP1000C) ....... 22
3.1.3a The Gain Soft Key .............................................................................. 22
3.1.3b The Noise Soft Key ............................................................................ 22
3.1.3c The Range Soft Key ........................................................................... 22
3.1.3d The Frequency Soft Key .................................................................... 22
3.1.3e The Sensitivity Time Control (STC) Soft Key .................................... 22
3.2 SYSTEM INFORMATION PAGE .................................................................... 23
3.2.0 The System Update menu ................................................................. 23
4. FISH FINDER SETUP MENU .................................................................................... 25
4.0 PRESETS ...................................................................................................... 25
4.1 PAGE SELECTION ......................................................................................... 25
4.2 DISPLAY SETUP ............................................................................................ 26
4.3 RANGE ...................................................................................................... 27
4.4 SENSITIVITY .................................................................................................. 28
4.5 ALARMS ...................................................................................................... 29

Page 6 FF520
4.6 TRANSDUCER SETUP .................................................................................. 29
5. SPECIFICATIONS ...................................................................................................... 31
5.0 FF520 SPECIFICATIONS .............................................................................. 31
5.1 FF520 EXTERNAL CONNECTIONS .............................................................. 32
6. TRANSDUCER ...................................................................................................... 33
6.0 TRANSDUCER MOUNTING .......................................................................... 33
6.0.0 Power Boats ....................................................................................... 33
6.0.1 Sailboats ............................................................................................. 33
6.0.2 Transducer Types .............................................................................. 34
6.0.3 Low Profile Thru-Hull .......................................................................... 34
6.0.4 Transom ............................................................................................. 34
6.0.5 Fairing Block ...................................................................................... 34
6.0.6 In-hull .................................................................................................. 35
6.1 OPTIONAL TRANSDUCER ID SENSORS ................................................... 35
7. TIPS OF OPERATIONS ............................................................................................. 37
7.0 How can I disconnect the cables from the FF520 in case I need to do so for the
installation? ..................................................................................................... 37
7.1 How can I set optimal operating parameters. ................................................. 38
7.2 What are preset modes? ................................................................................ 38
7.3 How can I restore the Fish Finder default operating parameters? ................ 38
7.4 I’m using the Fish Finder in manual mode, how can I set the parameters for
optimal operation. ........................................................................................... 39
7.5 Can I always leave the Fish Finder in Full Auto/(auto gain and auto range) mode? 39
7.6 What are extreme situations in which auto modes may fail? ......................... 39
7.7 What should I do if the auto modes fail? ........................................................ 39
7.8 Auto-range fails in very shallow waters displaying a digital depth readout deeper
than the actual value. What should I do? ....................................................... 39
7.9 Auto range fails, and the digital depth readout displays a very shallow reading.
What should I do? ........................................................................................... 39
7.10 Auto-range fails in very deep waters displaying a digital very shallow depth
readout. What should I do? ............................................................................ 40
7.11 At a very shallow range upper half of the screen appears almost completely filled
by the surface clutter. How can I eliminate it? ............................................... 40
7.12 Why do I never see fishes in the range between 0 to 0.7 meters? ............... 40
7.13 How can I reduce the surface clutter? ............................................................ 40
7.14 The Fish Finder is in auto gain mode but the picture display too many small
targets, what shall I do to reduce the screen clutter? .................................... 40
7.15 In very shallow waters when the AUTO GAIN mode is selected there are
fluctuations in the bottom profile width and its color representation. What should
I do? ...................................................................................................... 41
7.16 In very deep waters even setting the GAIN to its maximum value I cannot see the
bottom what shall I do? ................................................................................... 41
INDEX ...................................................................................................... 42

FF520 Page 7
1. INTRODUCTION
This chapter provides basic information in becoming familiar with the advanced functions of the
FF520 before you start using it combined with the STANDARD HORIZON GPS chartplotters.
1.0 GENERAL INFORMATION
The STANDARD HORIZON GPS chartplotters combined with the sonar performance of the
FF520 creates the most advanced marine navigation system available. This Owner's
Manual covers the Fish Finder functions of the FF520 when used with the STANDARD
HORIZON GPS chartplotters.
The FF520 advanced features include:
·A-scope (displays Sonar Echo in real time)
·Auto or Manual, with preset modes (Fish, Cruise, Autorange, Bottom Lock, Manual)
·2x and 4x Zoom (capability to magnify any part of the Fish Finder image of a fixed rate)
·Bottom Lock (capability to magnify a user defined range around the bottom)
·White Line (help distinguish between fish and bottom, when fish is swimming close to
the bottom)
·Sensitivity Time Control (STC) (reduces surface clutter show on the display by
reducing echos from water distrubances)
·Advanced Surface Declutter Function (surpresses the displaying of surface clutter)
·Interference rejection (allows reducing interference from other boats/Fish Finders)
·Noise Filter
·Fish Symbol feature
·Transducer ID (automatically selects power output and parameters for best perfor-
mance).
·Dual Frequency: 50 and 200kHz with the capability to display the two frequencies at
the same time.
·Dual Power output: 500/1000W (4000/8000Wpp) depending on the transducer con-
nected. Refer to Sec. 6.1 "Optional Transducers".
·Max Depth: 1KW - 1200Ft (365m) at 200kHz, 4000Ft (1219m) at 50kHz
500W - 700Ft (213m) at 200kHz, 1500Ft (457m) at 50kHz
·Min Depth: 2.5Ft (0.8m) at 200kHz, 5Ft (1.6m) at 50kHz
·Speed Sensor (if available on transducer)
·Dual temperature inputs Sensor (One channel TEMP1, Optional second channel
TEMP2) - (if available on transducer)
·Trip log
·External buzzer connections (buzzer not supplied)
·Show shallow Alarm, Depth Alarm, Temp Upper, Temp Lower
NOTE
Transducer ID is only available with STANDARD HORIZON DST520, DST521, DST523, DST525,
DST526, DST527 and DST528 transducers.
Performance of the FF520 used in conjunction with optional transducers (sold separately)
will vary based on water conditions, bottom composition, boat hull, vessel speed,
installation, and specific transducer model. This includes but is not limited to both minimum
and maximum depth performance.

Page 8 FF520
1.1 PACKING LIST
When the package containing the FF520 is first opened, please check for the following
contents.
1.1.0 FF520 Packing List
Replacement part Item
S8101640 Tee cable FF520
S8101641 Power cable FF50
EY307X100 Owner's Manual
CP155C_MAX CP155C software update card with MAX operating system
CP175C_MAX CP175C software update card with MAX operating system
CP1000_MAX CP1000C software update card with MAX operating system

FF520 Page 9
2. MOUNTING THE FF520
The FF520 must be properly installed according the following instructions to get the best
possible performance.
NOTE
TRANSDUCER: refer to Chapter 6 and to the Installation Manual supplied with the transducer.
2.0 INSTALLATION
The FF520 must be mounted in a dry, cool and well ventilated location. The FF520 can be
mounted horizontally or vertically. After the cables have been run, and connected as per
previous instructions mount the FF520 in the desired location using the supplied hardware.
Figure 2.0 - The FF520 Installing
2.1 CONNECTIONS
Figure 2.1 - The FF520

Page 10 FF520
2.2 CONNECTING THE GPS CHARTPLOTTERS TO THE FF520
CP155C and CP1000C connections to FF520
1. If the power/data cable is plugged into the CP155C or CP1000C, remove it.
2. Route the cable from the FF520 to the GPS Chart plotters location. Note the "Tee" cable
can be cut to run the cable, but care must be taken to ensure the cable is joined together
and sealed from moisture.
3. Plug in the "Tee" connector into the GPS Chart plotter DC/Data connector.
4. Plug in the power data cable into the "Tee" connector.
Figure 2.2 - CP155C Connection
Figure 2.2a - CP1000C Connection
CP175C connections to FF520
1. Cut off the "Tee" connector on the FF520 as close to the "Tee connector as possible.
2. Route the cable from the FF520 to the CP175C location.
3. Step back the black insulation on the "Tee" cable about three inches to expose the wires
inside the cable. Connect the wires from the CP175C to the FF520 "Tee" cable referring
to figure 2.2b CP175C Connection.
Figure 2.2b - CP175C Connection

FF520 Page 11
2.3 OPTIONAL CONNECTIONS
The FF520 has one NMEA output, one alarm buzzer output and a second input for a
temperature sensor.
Figure 2.3 - The FF520 Optional Connections
2.3.0 NMEA Output
The following sentences are outputted: DPT and DBT (Depth), VHW (Speed), VLW (Trip
Log), MTW (Water Temperature), XDR (External Sensor Temperature).
2.3.1 Alarm Buzzer
This connection has the capability to drive a buzzer that draws 400mA. Any 12VDC buzzer
within the current draw requirements can to be connected.
2.3.2 Second temp sensor
Any thermistor type temp sensor that produces 10K ohms at 77 degrees F can to be
connected.
2.3.3 LED Status Indicator
There are seven different LED behaviors, representing seven different diagnostic condi-
tions. These are described below.
·OFF
The FF520 is running in the boot loader, or DC power is not being supplied to the FF520.
·ON CONTINUOUSLY
The transducer is not connected to the GPS Chart plotter or problem with cable of the
transducer cable..
·1 LONG FLASH EVERY 2 SECONDS

Page 12 FF520
The FF520 is not connected with the GPS Chart plotter.
·1 SHORT FLASH EVERY 2 SECONDS
The FF520 is connected to the GPS Chart plotter and is operating correctly.
·2 SHORT FLASHES EVERY 2 SECONDS
The FF520 is not operating as it is waiting for a command from the GPS chart plotter.
·3 SHORT FLASHES EVERY 2 SECOND
A non-Standard Horizon transducer (without transducer ID) has been connected
·4 SHORT FLASHES EVERY 2 SECONDS
No transducer connected.
2.4 POWER CONNECTIONS
It is recommended the installation of a switch and a 5A fuse (not supplied) in the positive
DC supply to the FF520. The FF520 is designed to remain in stand-by even when the power
of the GPS chartplotter is turned off, this is the need for a switch so the vessels battery will
not be drained..
In the example below you will notice the positive DC power connection is run through a
switch and a fuse before connecting it to the FF520 and the GPS chartplotters.
Figure 2.4 - The FF520 Power Connection
2.5 GPS CHARTPLOTTERS SOFTWARE UPDATE
Inside the box containing the FF520 you will find 3 software upgrade CARDs. These CARDs
are used to update the software in the GPS chartplotters to be compatible with the FF520
and will load the MAX cartography operating system from C-Map. Please note that NT+
cartography cards still can be used, but to use all the MAX features a MAX cartography card
will have to be purchased.

FF520 Page 13
NOTE
Updating the software in the GPS chartplotters with these CARDs will erase all Marks and Routes
that you have stored. Please read carefully the following paragraphs.
2.5.0 Backing up Marks and Routes
If you have created Marks and Routes you will need to either make note and manually re-
enter them or purchase a optional User C-CARD supplied by C-Map. C-Map can be
contacted at [phone].
Refer to Par 9.0 of the GPS chartplotters’s Owner's Manual for backing up the points.
2.5.1 Installing Software
Once you have backed up your User Points:
1. Turn off the GPS chartplotter and insert the Software CARD (related to your GPS
chartplotter) into any C-CARD slot on the GPS chartplotter.
2. Press and hold [PWR] until the GPS chartplotter beeps, then release the key.
3. Wait until the Start screen is shown, then remove the CARD.
4. The software is now updated and the GPS chartplotter is compatible with the FF520.

Page 14 FF520

FF520 Page 15
3. FISH FINDER
This chapter is intended to help you understand how STANDARD HORIZON GPS
chartplotters with the FF520 connected operate.
The FF520 consists of a high power transmitter, sensitive receiver and a transducer. The
FF520 sends an electrical pulse to the transducer which contains a element that converts
the pulse into acoustic (sound) wave which is sent through the water. As this wave travels
from the transducer to the bottom, it may strike fish, structures, thermal clines (temperature
changes in the water). When the wave strikes an object(s) a certain amount of the wave is
reflected back to the transducer depending on the composition and shape of the object.
When the reflected wave is returned to the transducer it is converted into a voltage and is
amplified by the receiver, processed and sent to the display. The speed of sound in water
is roughly 4800 ft./sec, so the time lapse between the transmitted signal and the received
echo can be measured and the distance to the object determined.
Figure 3 - Fish Finder working principle
3.0 UNDERSTANDING THE FISH FINDER PAGE
The display on STANDARD HORIZON GPS chartplotters shows a history of time of the
echoes received by the transducer. The STANDARD HORIZON GPS chartplotters have a
menu that allows adjustments to receiver sensitivity, depth range and scrolling speed of the
Fish Finder display.

Page 16 FF520
Color Bar
5
3
Fish Finder window
Depth ruler
Variable Depth Marker (VDM)
Zoom Bar
2
8
9
7
4
Digital Depth
Water temperature
Warning message
1
7
1
5
3
6
8
9
A-Scope
10
6
2
6
Alarm Bar
11
4
10
Operating Frequency
11
Figure 3.0 - The Fish Finder page
Following there is a brief description of terms listed in the previous Figure 3.0:
Warning Message
This is a flashing label that is turned on when the echo sounder is in Simulation mode.
Fish Finder window
It is the graphic presentation of sonar soundings recorded as a continuous profile
scrolling across the screen from right to left. Such recordings represent the image of
the water beneath your boat, items appear as they pass under your transducer; the
items on the right side of the screen are closer to you than those on the left. The correct
interpretation of the fish finder page allows retrieving useful information about what is
under the boat. See the following Par. 3.0.0 for more information.
Color Bar
The colored scale located on the left side of the screen that shows the colors used in
the Fish finder page to represent the echoes strength. The color on the top of the bar
represents the maximum echo strength, while the color on the bottom of the bar
represents the minimum echo strength.
Digital Depth
Readout of the current bottom depth.
Water Temperature
Readout of the current water temperature returned by the temperature sensor located
in the depth transducer (TEMP1 sensor).
Alarm Bar
Range located on the right side of the depth ruler showing the range outside of which
the depth measurement will trigger an alarm condition. Alarm can be set as to alert the
user of shallow-water conditions, deep-water conditions or both.
Depth ruler
Vertical graduated bar that is located along the right side of the screen. It is a scale
which reflects the depth of the area being displayed.

FF520 Page 17
Variable Depth Marker (VDM)
Horizontal line on to the Fish finder page window with a depth label. Move the
ShuttlePoint knob UP or Down to change the position of the VDM. The label displays
the depth of the cursor position. The VDM can be moved to any location pinpointing the
depth of a target.
Zoom Bar
Range bar that is located on the left side of the Depth Ruler representing the current
zoom range. It is turned on in the un-zoomed window of the Standard/zoomed split view
to indicate which portion of the Fish finder page is currently represented in the zoomed
window.
A-Scope
Real time representation of fish and bottom features passing through the beam of the
transducer. It is drawn as column of horizontal lines whose length and hue is
proportional to the echo strength returned. The stronger the echo the larger shall be
the line height. The hue depends on the currently selected palette. When the default
palette is selected, on the color chartplotters the strongest sonar returns will be shown
as red and weaker returns will be shown blue.
Operating Frequency
Readout of the selected operating frequency.
3.0.0 Understanding the Fish Finder display
Figure 3.0.0a - The Fish Finder Fish finder page
Fishes
Fishes are represented as arcs because of the cone angle of the transducer. In fact as
the boat passes over the fish the leading edge of the cone strikes the fish, causing a
display pixel to be turned on. As the boat passes over the fish, the distance to the fish
decreases turning each pixel on at a shallower depth on the display. When the boat is
directly over the fish, the first half of the arch is formed and since the fish is closer to
the boat, the signal is stronger and the arch is thicker. As the boat moves away from
the fish, the distance increases and the pixels appear at progressively deeper depths
forming the remaining half of the arch.
Thermoclines
Are the zones where two layers of different water temperatures meet. The greater the
temperature differential, the denser the thermocline shows on the screen. Ther-

Page 18 FF520
moclines are represented as horizontal stripes of noise. They are very important for
fishing since often many species of game fish like to suspend in, just above, or just
below the thermoclines.
White Line
The White Line shows the difference between hard, soft bottoms and even distinguish-
es between fishes and structures located near the bottom. In this way it is easier to tell
the difference between a hard and soft bottom and even to distinguish fishes and
structures located nearby the bottom. For example, a soft, muddy or weedy bottom
returns a weaker echo that is shown with a narrow white line while a hard bottom returns
a strong echo that causes a wide white bottom line.
Surface Clutter
Appears like noise at the top of the screen extending many feet below the surface. It’s
caused by many things, including air bubbles, bait fish, plankton and algae.
Structures
Generally, the term “structure” is used to identify objects like wrecks and weeds rising
from the bottom.
Bottom Echo Profile
Bottom profile recorded by the FF520. When the echo sounder is set in auto-range
mode it is automatically kept in the lower half of the screen.
3.1 DISPLAYING THE FISH FINDER PAGE
This section explains how to show and customize the selection of the Fish Finder display
pages.
Legend:
[MENU] If you see brackets around a word, this is referring to a key press
PAGE SELECTION An underlined word refers to a selection in the menu
3.1.0 Menu selection (all GPS chartplotters)
1. From all pages except the Fish Finder page, press [MENU].
2. Move the ShuttlePoint knob to highlight FISH FINDER and press [ENTER] or move the
ShuttlePoint knob to the right.
Figure 3.1.0 - Fish Finder page selection by [MENU]

FF520 Page 19
3.1.0a Customizing the Fish Finder menu selection
The default setting of the FISH FINDER selection in the Main Menu is 200kHz Full page,
however this may be changed to show images as shown in the Figure 3.1.0a.
From the Chart page:
1. Press [MENU], select the Fish finder page and press [ENTER] or move the ShuttePoint
knob to the right.
2. Press [MENU], move the ShuttePoint knob down to select PAGE SELECTION and
press [ENTER] or move the ShuttePoint knob to the right.
3. The PAGE SELECTION window will be shown. Move the ShuttlePoint knob up/down or
left/right to select the desired display and press [ENTER].
Figure 3.1.0a - Page Selection menu
3.1.1 Soft Keys (CP175C and CP1000C)
1. Locate and press the Soft Key labeled 200kHz Full.
Figure 3.1.1 - Fish Finder page selection by Soft Keys
3.1.1a Customizing the Soft Keys
All of the Soft Keys can be customized to select the Fish Finder displays to which you want
quick access to one or up to 3 Fish Finder FULL DISPLAY pages:

Page 20 FF520
Figure 3.1.1a - Fish Finder FULL DISPLAY pages
To customize a Soft Key:
1. Press any of the Soft Keys.
2. Press and hold one of the Soft Keys until the menu is shown below.
Figure 3.1.1b - Fish Finder Soft Keys configuration
3. Move the ShuttlePoint to the desired Fish Finder page and press [ENTER].
3.1.2 Key Operation when Fish Finder page is shown
When the Fish Finder pages are shown [MENU], [ENTER], [CLEAR], [MARK], [ZOOM IN]
and [ZOOM OUT] are used to perform specific functions described below.
3.1.2a The MENU key
1. Pressing [MENU] when a Fish Finder page is displayed, will show the Fish Finder Setup:
Figure 3.1.2a - The MENU key, Fish Finder Setup
2. If pressed again the GPS chartplotters Main Menu will be displayed.
NOTE
To change to the Chart page [MENU] must be pressed 2 times to show the Main Menu. Then move

FF520 Page 21
the ShuttlePoint Knob to select the Chart page and press [ENTER] or move the ShuttlePoint knob
to select the Chart page.
3.1.2b The ENTER key
1. Pressing [ENTER] when a Fish Finder page is displayed, will show the Sensitivity Menu.
Figure 3.1.2b - The ENTER key, Sensitivity Menu
3.1.2c The CLEAR key
1. Pressing [CLEAR] hides the Variable Depth Marker (VDM).
2. Pressing [CLEAR] in ZOOM mode with AUTORANGE enabled, selects the BOTTOM
FOLLOWING mode. In such mode the ZOOMED view automatically follows the bottom
contour to keep it always displayed in the lower half of the screen.
3.1.2d The ZOOM IN and ZOOM OUT keys
Pressing [ZOOM IN] when any of the Fish Finder displays are shown, allows the page to
be zoomed into 2X or 4X the normal display.
Move the ShuttlePoint knob up or down to move the VDM to the area you wish to zoom into.
Press [ZOOM IN] once, and 2X will be shown in the bottom left corner of the display.
Pressing [ZOOM IN] again switches to 4X and again to normal operation.
Pressing [ZOOM OUT] switches from 4X to 2X and vice versa.
3.1.2e The MARK key
Pressing [MARK] when any of the Fish Finder displays are shown, place a mark on the chart
page on the boat position.
3.1.2f The SHUTTLEPOINT knob
Moving up or down the ShuttlePoint knob when any of the Fish Finder displays are shown,
move the VRM up and down.
3.1.2g Controls on Chart page or Fish page in Chart/Fish dual mode
When the GPS chartplotters is in the Chart/Fish display mode, it is possible to move the
control between the Chart and the Fish:

Page 22 FF520
1. To use the keys on the Chart Page, press [MENU] until the Main Menu is show, then
press [CLEAR].
2. To use the keys to control Fish Finder operations, press [MENU] to until the display
shows the Fish Finder Setup, then press [CLEAR].
3.1.3 Sounder Adjustments with Soft Keys (CP175C and CP1000C)
When the Fish Finder full page is displayed, pressing one of the Soft Keys will allow control
of Gain (receiver gain), Noise (Noise threshold), Range (manual depth range), Frequency
(200kHz or 50kHz) and Sensitivity Time Control. If no key is pressed the Soft Keys will
disappear in 5 seconds. To manually hide the Soft Keys, press [CLEAR] .
3.1.3a The GAIN Soft Key
By pressing [GAIN]the Gain changes between AUTO GAIN and MANUAL GAIN.
If MANUAL GAIN, use the cursor left/right to adjust it: a bar with the % symbol is displayed
on the screen above the [GAIN]label.
If AUTO GAIN, use the cursor left/right to adjust the Gain Offset: a bar with the % symbol
is displayed on the screen above the [GAIN]label.
3.1.3b The NOISE Soft Key
Pressing the [NOISE]soft key and moving the ShuttlePoint knob to the right or left will
increase or decrease the Noise threshold level..
3.1.3c The RANGE Soft Key
By pressing [RANGE]the window switches to the next RANGE status: MANUAL, BOTTOM
LOCK and AUTO.
If MANUAL is selected move the ShuttlePoint knob up or down will adjust the depth vale in
10 Ft steps. To adjust the Shift move the ShuttlePoint knob to the Left or Right.
When BOTTOM LOCK is selected, moving the Shuttlepoint knob up or down to adjust the
Bottom range 10 Ft at a time.
If AUTO RANGE, the range value is set automatically by the FF520 and it cannot be
changed by the user.
3.1.3d The FREQUENCY Soft Key
Pressing the [FREQUENCY] Soft Key toggles the FF520 output frequency between 50,
200kHz and Auto. The current value or Frequency is shown on a window right over the
[FREQUENCY]label. The [FREQUENCY]is not available when the Fish Finder show 50 and
200kHz Dual page.
3.1.3e The Sensitivity Time Control (STC) Soft Key
The [STC] changes the STC value between OFF/SHORT/MID/LONG/CUSTOM. The
current value of STC is shown on a window right over the [STC] label. Move the ShuttlePoint
knob left or right will adjust the value.