Furuno CI-80 Radar Detector User Manual

DOPPLER SONAR
CURRENT INDICATOR
CI-80
C
Yo u r L o c a l A g e n t / D e a l e r
9-52, Ashihara-cho,
Nishinomiya, Japan
Te l e p h o n e :
Te l e f a x :
0 7 9 8 - 6 5 - 2 111
0798-65-4200
All rights reserved.
Printed in Japan
PUB. No. OME-72390
(DAMI)
CI-80
FIRST
EDITION
F
:
:
FEB. 1995
JAN. 6, 2001
SAFETY INSTRUCTIONS
WARNING
ELECTRICAL SHOCK HAZARD
WARNING
Keep heater away from equipment.
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
Immediately turn off the power at the
switchboard if water leaks into the
equipment or something is dropped in
the equipment.
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
Do not place liquid-filled containers on
the top of the equipment.
Fire or electrical shock can result if a liquid
spills into the equipment.
A heater can melt the equipment’s power
cord, which can cause fire or electrical
shock.
Use the proper fuse.
Fuse rating is shown on the equipment.
Use of a wrong fuse can result in equipment damage.
Do not operate the equipment with wet
hands.
Electrical shock can result.
CAUTION
A warning label is attached to the
equipment. Do not remove the label.
If the label is missing or damaged,
contact a FURUNO agent or dealer.
WARNING
Immediately turn off the power at the
switchboard if the equipment is emitting
smoke or fire.
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
Name: Warning Label (1)
Type: 86-003-1011-0
Code No.: 100-236-230
Continued use of the equipment can cause
fire or electrical shock. Contact a FURUNO
agent for service.
Make sure no rain or water splash leaks
into the equipment.
Fire or electrical shock can result if water
leaks in the equipment.
i
Table of Contents
PRINCIPLE OF MEASUREMENT................................................................................ 1
PRINCIPLE OF MEASUREMENT, FEATURES.................................................................................. 1
TIDE, NAV-TIDE & TIDE DIFFERENTIAL .......................................................................................... 4
IMPORTANT NOTICE ON TIDE MEASUREMENTS.......................................................................... 8
Features ............................................................................................................................................ 10
SYSTEM OVERVIEW ..................................................................................................11
Control Description............................................................................................................................ 11
How to Read the Displays ................................................................................................................. 13
MAIN MENU DESCRIPTION...................................................................................... 16
DEP Menu ......................................................................................................................................... 16
ECHO Menu ...................................................................................................................................... 17
TRK Menu ......................................................................................................................................... 17
MARK Menu ...................................................................................................................................... 18
AVR Menu ......................................................................................................................................... 18
OPERATION............................................................................................................... 19
Basic Operating Procedure ............................................................................................................... 19
Setting Tide Measuring Depths on the Echo Display........................................................................ 22
Setting up the Echo Display .............................................................................................................. 23
Setting up the Course Plot Display ................................................................................................... 24
Marks ............................................................................................................................................... 25
Calculating Trip Distance................................................................................................................... 26
Calibrations (offsets) ......................................................................................................................... 26
Water Speed Display Setting............................................................................................................. 27
Nav Data Setting ............................................................................................................................... 28
MAINTENANCE & TROUBLESHOOTING................................................................. 29
Preventive Maintenance.................................................................................................................... 29
Troubleshooting................................................................................................................................. 30
Self Tests, Demonstration Display..................................................................................................... 31
Self Test Results................................................................................................................................ 33
MENU TREE............................................................................................................... 36
SPECIFICATIONS .................................................................................................. SP-1
ii
PRINCIPLE OF MEASUREMENT
PRINCIPLE OF MEASUREMENT, FEATURES
When a moving vessel emits an acoustical pulse into the water
at an angle, a portion of emitted energy is reflected from the
seabed and other microscopic objects in the sound path, such
as plankton or air bubbles. The frequency of the received
signal is shifted from the transmitted frequency in proportion to
relative velocity between the vessel and underwater reflecting
objects. This is called Doppler Effect.
The CI-80 calculates and displays movements of ship and
currents at specific depths by measuring Doppler shifts
obtained from three separate directions.
Frequency of reflected signal is
shifted in proportion to relative speed
between the vessel and reflecting
objects.
Planktonic layer
Seabed
Figure 1
Ship’s Speed (Here, speed is a vector value including velocity and direction.)
Depending on the base of measurement, ship’s speed is
expressed in two ways:
Ground tracking speed: Ship’s speed and course relative to
(Absolute speed)
seabed (fixed base)
Water tracking speed:
(Relative speed)
Ship’s speed and course relative to
water layer just below the vessel
(floating base)
Nav-aided speed:
(Absolute speed)
Ship’s speed and course obtained
by external navigation equipment
(GPS)
1
GPS satellites
Nav-aided speed
(Pseudo ground tracking speed)
Water tracking speed
Near-surface layer
:Base of measurement
Ground tracking speed
Fixed
Figure 2
Tide
Tide is movement of watermass at a particular depth.
To know absolute tide (speed on ground), the following two
data are required:
1
Ship’s speed and course based on ground
2
Ship’s speed and course based on measuring layer (A)
Absolute tide is, then, given as a difference of these two speed
vectors.
Absolute Tide =
1
– 2
2
Layer (A)
1
:Base of
measurement
Fixed
Figure 3
2
Nav Tide
Nav-Tide is an absolute movement of watermass at a particular
depth, taking speed information from the external navigator
(GPS) as a pseudo ground tracking speed.
To calculate Nav-tide, the following two data are required:
1
Ship’s speed and course obtained by external navigation
equipment (GPS)
2
Ship’s speed and course based on measuring layer (A)
Nav-tide is, then, given as a difference of these two speed
vectors.
Absolute Tide =
1
– 2
GPS satellites
1
2
Nav-aided speed
(Pseudo ground tracking speed)
Water tracking
speed
:Base of measurement
Layer (A)
Figure 4
Tide Differential
Tide differential is a relative movement of tides at different
depths, layer (A) and layer (B).
To calculate tide differential, the following two data are used:
1
Ship’s speed and course based on layer (A)
2
Ship’s speed and course based on layer (B)
Tide differential between two layers is, then, given as a
difference of these two speed vectors.
3
Tide Difference =
1
- 2 (Movement of layer B based on
layer A)
or
= 2 -
1
(Movement of layer A based on
layer B)
1
Layer (A)
2
Layer (B)
:Base of measurement
Figure 5
TIDE, NAV-TIDE & TIDE DIFFERENTIAL
Tide (Absolute tide)
Absolute tide can be measured in the ground tracking mode.
10 NM (1 hour trip)
Start of
trip
End of
trip
(Moving at 10 kt on ground)
Layer A
1
(Moving at 3 kt on ground)
2
:Base of
measurement
Fixed
Figure 6
Assume that the ship and layer A are moving in the same
direction, and ship’s speeds based on ground (Vg) and on layer
A (Vwa) are measured as;
Vg
= 10 kt (Ship’s speed based on ground)
Vwa =
4
7 kt (Ship’s speed based on layer A).
Speed of layer A based on ground (C1) can be calculated as
follows:
C1
= Vg – Vwa
= 10 – 7
= 3 (kt)
Nav-Tide (Absolute tide)
Absolute tide can be measured in the nav-aided mode.
Nav-aided ship’s speed (Vn) is equivalent to ship’s ground
tracking speed in the ideal conditions. That is, the nav-tide can
be calculated by simply replacing Vg with Vn in the above
equation.
Tide Differential
Tide differential is a relative movement of tides at different
depths.
It can be measured in the ground tracking, water tracking and
nav-aided modes.
10 NM (1 hour trip)
Start of
trip
Layer A
End of
trip
2
3
(Moving)
:Base of measurement
Layer B
(Moving)
2 kt
5 kt
Figure 7
5
Assuming that the ship, layer A and layer B are moving in the
same direction, and ship’s speeds based on layer A (Vwa) and
on layer B (Vwb) are measured as;
Vwa = 8 kt (Ship’s speed based on layer A)
Vwb = 5 kt (Ship’s speed based on layer B)
Tide differential calculations in ground tracking mode
As an absolute ship’s speed (Vg) is available in the ground
tracking mode, tide speeds of layer A (C1) and layer B (C2)
based on ground are calculated as follows:
C1
= Vg - Vwa (Speed of layer A based on ground)
C2
= Vg - Vwb (Speed of layer B based on ground)
Thus, the tide differential (Cd) between layer A and layer B is;
Cd
=
=
=
=
=
C2 - C1
(Vg - Vwb) - (Vg - Vwa)
Vwa - Vwb
8-5
3 (kt)
Tide differential based
on layer A
=
=
=
=
=
C1 - C2
(Vg - Vwa) - (Vg - Vwb)
Vwb - Vwa
5-8
-3 (kt)
Tide differential based
on layer B
Speed of layer B
viewed from layer
A
or
Cd
Speed of layer A
viewed from layer
B
In the water tracking mode, watermass just below the
transducer (near-surface layer) is taken as the base of all
measurements (virtual ground). Therefore, the ship and tide
speeds in the water tracking mode are not absolute but relative
to this near-surface layer.
Vw
= 9 kt (Ship’s speed based on near-surface layer)
Vwa = 8 kt (Ship’s speed based on layer A)
Vwb = 5 kt (Ship’s speed based on layer B)
6
10 NM (1 hour trip)
Start of
trip
Nearsurface
layer
1
2
Layer A
End of
trip
3
:Base of measurement
Layer B
Assume that the ship and all measuring layers
are moving in the same direction, but at different
speeds.
1 kt
2 kt
5 kt
Figure 8
7
[READ THIS FIRST!!]
IMPORTANT NOTICE ON TIDE MEASUREMENTS
(In the nav-aided mode, tide accuracy depends heavily on gyro
accuracy.)
SETTING SHIP’S HEADING
The CI-80 has the nav-aided mode to measure absolute tides
even in deep waters where ground tracking is unattainable. To
achieve reliable measurements, however, you must supply
accurate heading (gyro) information and ship’s position (or
speed/course) data to the CI-80.
If you are going to use the nav-aided mode, set the reading of
the AD converter (gyro interface) exactly with that of the master
gyrocompass.
Procedure
1. Confirm that the gyrocompass has settled and all the
necessary compensations (latitude compensation, weather
compensation, etc.) are made correctly.
2. Operate the AD converter to obtain the same reading as
you read on the master gyrocompass. (Do not make
adjustment while the ship is turning.)
Master
Gyrocompass
AD Converter
(Gyro Interface)
Figure 9
If the gyro reading is accurate, the CI-80 should provide
accurate tide information. If the gyro data contains some error,
however, you may see the following symptoms.
•
•
8
Set/drift information on the nav-aided mode differs from that
on the ground-tracking mode.
Tide/tide differential information on the nav-aided mode
differs from that on the ground-tracking mode.
10
0
10
10
20
20
0
10
20
20
1°
-3°
0.2 kt
0.5 kt
GT Mode
NAV Mode
GT Mode
NAV Mode
Figure 10
9
Features
The CI-80 mainly consists of three units: a display unit, a
transceiver unit, and a transducer, each compact enough to fit
on small boats.
The main features of the CI-80 are;
•
•
•
•
•
•
•
•
•
10
Even in deep waters where ground (bottom) reference is
not available acoustically, the CI-80 can provide absolute
movements of measuring layers by receiving position (or
speed) data from GPS navigator and heading data from
gyro compass. It may be used on deep sea fishing boats or
on ocean research vessels.
Triple-beam system for automatic compensation against
pitching and rolling of vessel.
Single mold transducer for excellent mechanical beaming
accuracy.
DC powered for economic operation.
Alphanumeric information display on high resolution 10 inch
color CRT.
Simultaneous display of tide vectors and ship’s track.
Indispensable for maneuvering and docking.
Echo level display constantly displays underwater
conditions of three sounding beams.
Target point feature predicts flow of objects (for example,
fishing tackle) against tide.
Easy-to-follow menu operation for control of various
settings and measuring conditions.
SYSTEM OVERVIEW
Control Description
Display unit (CI-800)
Figure 11 Display unit
Transceiver unit (CI-810)
Figure 12 Transceiver unit
11
Table 1 Control description
Control
Description
Turns the system on/off.
ON
OFF
Adjusts brilliance of display. Setting can be locked by pushing in
control.
0
10
BRLL
Alternately selects echo display and course plot display.
DISP
MODE
MODE
Selects tracking mode among ground tracking, water tracking, nav
aided and automatic selection.
(G)
(W)
(A)
(G)
(N)
(A)
Select "T/D" or "NAV" from the item
WATER SPEED on the SYSTEM menu.
Opens/closes the menu.
MENU
Select menu.
In menu operation, select menu items; change settings; enter
data. On the course plot display, shift cursor.
CURSOR
ON/OFF
EVENT
TRIP
TARGET
POINT
12
Turns cursor on/off.
Enters event mark. Also activates self tests and demonstration
display and register calibrations.
Calculates trip distance. Also enables system menu, when
pressed and held down while pressing the MENU key.
Inscribes target point mark, to predict flow of object (for example,
fishing tackle) against tide.
How to Read the Displays
The CI-80 has two display modes: echo display and course plot
display.
A display may be selected with the DISP MODE key.
Echo display
Figure 13 Sample echo display
13
When speed or depth data appears in red…
Speed or depth data containing error appears in red.
Ships speed
Cannot find reference echo in respective tracking mode.
Tide speed
Cannot find echo in given layer.
Set depth
Depth set is invalid. In ground tracking mode, depth should be shallower
than 7 m, or in the water tracking mode no more 3/4 of seabed depth.
Measured speed When measured speed (tide or ship's) is unreliable.
Course plot display
Figure 14 Sample course plot display
NOTE 1: Ship's course and heading displays can be switched
with display mode as follows, by a DIP switch in the
display unit.
14
NOTE 2: Ship's speed and course displays are update every
three seconds, in the default setting. They can be
updated every second. For details, consult your
dealer.
15
MAIN MENU DESCRIPTION
Most major functions of the CI-80 are carried out through an
easy-to-follow menu system. The menu system consists of two
main groups of menus: main (operation) and system (testing,
calibration). This chapter covers the main menu. For complete
menu tree, see page 36.
Basic Menu Operation
Most major functions of the CI-80 are carried out through an easy-to-follow menu system.
Two general types of menus are used: main (operation) and system (testing).
Opening/closing the menu: Press the MENU key.
Selecting menus: Press ◄ / ►.
Selecting menu items: Press
/
.
Selecting menu options, changing settings: Press
/
.
DEP Menu
This menu sets both the measuring depths for three layers and
the reference layer for tide differential calculation.
LAYER 1, LAYER 2, LAYER 3: Depth for measuring layers 1, 2
and 3 can be set between 2 and 250 meters, in resolution of
one meter.
REF TIDE DIFFERENCE: Selects tide layer to be used
reference layer in tide differential calculation.
NOTE: The depth of each layer may be set as you like; layer
number does not necessarily correspond to depth in
ascending order.
Figure 15 DEP menu
16
ECHO Menu
Sets up the echo display.
SPEED RANGE: Sets length of tide speed vector between 0.1
and 15.0 knots, in resolution of 0.1 knots.
ECHO DEPTH RANGE: Sets echo depth range. Depth can be
set either manually between 50 and 300 meters in resolution of
50 meters or automatically. In AUTO, seabed depth is
automatically selected as depth range.
ECHO LEVEL SHIFT: Sets echo intensity level, between 1 and
100 in resolution of 1. The higher the figure the stronger the
echo level.
NOTE: ECHO LEVEL SHIFT is not related to amplifier gain; it
does not affect detection of tide speed or ship’s speed.
Figure 16 ECHO menu
TRK Menu
Sets up the course plot display.
PLOT RANGE: Sets latitude and longitude range of course plot,
between 0.1 and 5.0 miles in resolution of 0.1 mile.
PLOT MODE: You may select either Head-up (bow at top of
display) or North-up (North at top of display) orientation.
TRACK DISPLAY: Turn on/off trackline display.
Figure 17 TRK menu
17
MARK Menu
This menu sets measuring conditions for tide vector and target
point mark.
PRESET REFERENCE VALUE: Sets the effect of tide on the
target point mark. The higher the figure, the greater the effect
of tide.
TIDE HISTORY: Sets tide vector plotting interval, among 0
(turns off tide vector display), 15 sec. (1/4 min.), 1 min., 5 min.,
10 min., 30 min., and 60 min.
Figure 18 MARK menu
AVR Menu
The AVR (Averaging) sets averaging time for measuring raw
speed, tide and water tracking data, to smooth out random
variation of data.
SHIP SPD AVR: Raw speed data (from connected sensor) may
change randomly due to receiving conditions, etc. If speed data
varies greatly increase speed averaging. Speed averaging is
available in times of 15 sec., 30 sec., 60 sec., and 90 sec. The
default setting is 15 sec., which is suitable for most conditions.
Figure 19 AVR menu
TIDE AVERAGE: Direction and speed of a tide changes with
time, place and depth. Therefore it is important that the current
indicator not respond to quickly or too slowly to tide movement.
Tide averaging time is available between 0 and 5 minutes in
the nearest minute. (“0” is for use of raw tide data.) In most
cases “2 min.” provides excellent results. Too high a setting
may prevent detection of rapid changes in tide movement, such
as a current rip.
WT SPD DEPTH: Sets measuring depth of water speed in the
water tracking mode. The default setting is two meters, and it is
suitable for most conditions. Change the setting when water
tracking speed display becomes unstable (due to air bubbles,
etc.), or to measure water tracking speed at a given depth.
18
OPERATION
Basic Operating Procedure
Turning on the system
1. Turn on the transceiver unit.
2. Turn on the display unit.
3. Adjust brilliance of display.
The display unit conducts a check of the system, displaying the
results about 40 seconds after turning on the power.
Figure 20 Display unit and transceiver unit
Selecting operating mode
Press the MODE key to select operating mode among water
tracking, ground tracking, or automatic selection. Selected
mode appears at top right corner on the display.
N: Nav
Figure 21 Location of operating mode indication on echo
display
19
„ Ground Tracking Mode: Shows absolute ship and tide
movements based on ground. (Bottom echo required.)
„ Water Tracking Mode: Shows movements of ship and tide
relative to near-surface water.
„ Nav-aided Mode: Shows ship’s movement measured by the
external navigation equipment, and the tide movements
based on the nav speed data.
„ Auto Tracking Mode: Uses ground tracking mode when
bottom echo is available. Switches to water tracking mode
(or nav-aided mode) when bottom echo is lost. Bottom echo
is continuously searched for, and if re-acquired the ground
tracking mode is restored.
Setting measuring depths
1. Press the MENU key.
2. Press ◄ / ► to select DEP menu.
3. Press
/
to select layer.
4. Press
/
to set depth.
5. Repeat steps 1-4 to set other layers.
Note that measuring depth can also be set on the echo display.
See next page for further details.
20
Setting tide differential layer
1. On the DEP menu, press
DIFFERENCE.
2. Press
/
/
to select REF TIDE
to set layer.
Figure 22 How to set tide differential
Turning off the power
Press the power switch on the display unit.
21
Setting Tide Measuring Depths on the Echo Display
Earlier you learned how to set tide measuring depths on the
DEP menu.
Measuring depths can also be set directly on the echo display.
Selecting a layer, setting depth
1. On the echo display, press
/
to select layer desired.
Selected layer’s depth indication changes from white to
orange.
Figure 23 Echo display
2. Press
/
to set depth. “DEPTH SETTING” appears
while setting depth.
3. Press
white.
22
to finish. Depth indications change from orange to
Setting up the Echo Display
Setting tide speed vector range
1.
Press the MENU key.
2. Press ◄ / ► to select the
ECHO menu.
3. Press
/
RANGE.
to select SPEED
4. Press
/
to set speed.
(Default setting: 1.0 knot)
Figure 24 ECHO menu
Setting echo depth range
1. Press
/
to select ECHO DEPTH RANGE.
2. Press
/
to set depth. (Default setting: 100 meters)
1. Press
/
to select ECHO LEVEL SHIFT.
2. Press
/
to set echo intensity.
Setting echo intensity
Registering settings, closing the menu
Press the MENU key.
23
Setting up the Course Plot Display
The course plot display mainly plots ship’s track. It can be
displayed by pressing the DISP MODE key.
Figure 25 Sample course plot display, TRK menu
Setting the plot range
1. Press the MENU key.
2. Press ◄ / ► to select the TRK menu.
3. Press
/
to select PLOT RANGE.
4. Press
/
to set plot range.
1. Press
/
to PLOT MODE.
2. Press
/
to select HU (Head-up) or NU (North-up).
Setting plot orientation
Setting tide vector plotting interval
1. Press ◄ / ► to select the
MARK menu.
2. Press
/
to select
TIDE HISTORY.
/
3. Press
interval.
24
to set plotting
Figure 26 MARK menu
Marks
The CI-80 has two types of marks which can be inscribed on
the display: event mark and target point mark.
Figure 27 Appearance of event mark and target point mark
Event mark
The EVENT key inscribes present position on the display. It is
useful for marking important locations, etc. 25 event marks may
be entered. When the event mark memory is full the oldest
event mark is erased to make room for the latest.
Target point mark
The TARGET POINT key inscribes a target point mark on the
display. The target point mark is useful for estimating 3-D
deformation of fishing tackle (net, etc.) by the effect of tides at
different depths. 25 target point marks can be entered. When
the target point mark memory is full the oldest target point mark
is erased to make room for the latest.
Tide effect can be set on the MARK menu.
25
Erasing marks
1. Press the CURSOR
ON/OFF key.
2. Operate the four arrow keys
to place cursor on mark to
erase.
3. Press the EVENT key (or
TARGET POINT key).
Figure 28 How to erase
marks
Calculating Trip Distance
Press the TRIP key to start calculation of trip distance from
present position. The trip distance indication is automatically
reset to zero.
Figure 29 Course plot display, showing location of trip distance
indication
Calibrations (offsets)
Offsets can be applied to measured values to further refine
accuracy. This can be done on the CALB menu.
Opening the system menu
1. Press the DISP MODE key to display the echo display.
2. While pressing and holding down the TRIP key, press the
MENU key.
26
Displaying the CALB menu
MODE
1. Press ◄ / ► to select the CALB menu.
CALB
GT SPD CALIB
2. Press
/
to select menu item.
0.0
3. Press
/
to set offset.
%
[-12.8~12.7]
WT SPD CALIB
0.0
%
[-12.8~12.7]
DRAFT LEVEL
0.0
m
°
°
Raise setting when ground tracking
speed is slower than ship’s speed.
WT SPD CALIB:
Raise setting when water tracking
speed is slower than ship’s speed.
DRAFT LEVEL:
Enter depth of transducer from sea
surface.
[-12.8~12.7]
COURSE CALIB
0.0
GT SPD CALIB:
[0.0~50.0]
BEARING CALIB
0.0
Menu items
*1
[-12.8~12.7]
*1: Shown when current
(tide) processor is
active.
Figure 30 CALB menu
BEARING CALIB: Compensate for bearing error in
relation to ship’s bow.
COURSE CALIB: Compensate for course error.
NOTE: If course indication by ground tracking mode differs
from that of navigator (GPS) even with a correct
bearing calibration, enter the course calibration
angle.
4. Press the MENU key to register settings and close the
menu.
Water Speed Display Setting
1. Press the DISP MODE key to display the echo display.
2. While pressing and holding down the TRIP key press the
MENU key.
3. Press ◄ / ► to select MODE.
4. Press
or
to select WATER SPEED.
5. Press
or
to select T/D or NAV.
T/D: Ship’s speed, tide and tide differential are calculated
from doppler shift frequency. Press the MODE key to select
measuring mode, in the sequence of G(Ground), W(Water),
A(Auto).
NAV: Ship’s speed and position data are fed from the GPS
navigator. Tide and tide differential are calculated using
GPS data when the ground echo cannot be detected.
Press the MODE key to select measuring mode, in the
sequence of G(Ground), N(Nav), A(Auto).
27
MODE
CALB
SELF TEST
OFF SYS ECHO PNL
DEMONSTRATION
OFF
ON
WATER SPEED
T/D
NAV
NAV DATA
SPD
*1
*1
L/L
*1: Shown when tide
processor is active.
Figure 31 MODE menu
Nav Data Setting
1. Press the DISP MODE key to display the echo display.
2. While pressing and holding down the TRIP key press the
MENU key.
3. Press ◄ / ► to select MODE.
4. Press
or
to select NAV DATA.
5. Press
or
to select L/L or SPD.
“L/L”: Calculates speed internally from position data
change.
“SPD”: Takes speed data from external navigator as they
are. (Select “SPD” if connected with GPS.)
28
MAINTENANCE & TROUBLESHOOTING
Preventive Maintenance
Regular checks
•
•
•
•
Regular maintenance is important for continued
performance. Check the following on a monthly basis.
Check that all connectors and cables are securely
tightened.
Check grounding systems of units for corrosion.
Also regularly measure voltage to confirm that it is within
prescribed rating.
Cleaning of units
Display unit/ transceiver unit
Accumulated dirt can be wiped off with a soft cloth. If necessary,
a mild detergent diluted in water may be used. Chemical
cleaners should not be used to clean any unit; they can remove
paint and markings.
Transducer unit
Barnacles and other marine life adhering to the transducer face
can cause a considerable drop in performance. Check the
transducer face regularly for marine life and clean if necessary.
The transducer should never be painted.
29
Troubleshooting
The troubleshooting table which follows provides simple
troubleshooting procedures which the user may use to restore
normal operation. If normal operation cannot be restored, do
not attempt to check inside any unit. Any repair is best left to a
qualified technician.
Table 2 Troubleshooting table
If…
Then…
power is on but nothing
appears on the display
• adjust BRILL control.
• check power cable.
• check for loosened power connector.
• check for blown fuse.
nothing appears on the
echo display
• check that transceiver unit is turned on.
• check power cable and connector on transceiver unit for tight connection.
• check fuse on transceiver unit.
echo display is normal
but echo or tide is not
displayed
• check interconnection cable between transceiver unit and display unit.
color is distorted or
display is too bright/
dark
• adjust BRILL control.
certain colors are
abnormal or picture
jumps
• check for magnets near display unit.
tide vector is not
displayed
• “TIDE HISTORY” on the MARK menu may be set to “0”.
no echoes are
displayed
• “ECHO LEVEL SHIFT” on the ECHO menu may be set too narrow.
If ship’s track is not
displayed
• “TRACK DISPLAY” on the TRK menu may be turned off.
seabed does not
appear on the echo
display
• “ECHO DEPTH RANGE” on the ECHO menu is set too shallow. Set to
suitable depth, or select AUTO.
echo display is
interrupted
• vessel is in heavy seas or passing over wake of another vessel.
tide data is unstable
• “TIDE AVERAGE” on the AVR menu may be set to “0”.
interference is present
on the display
• check ground for corrosion.
30
• try turning off and on the power to restore normal picture.
• depth is beyond measurable depth (300 meters).
• marine life may be adhering to the transducer.
• cables of other equipment may be too near transducer cable.
Self Tests, Demonstration Display
The CI-80 has four self tests and a demonstration display
which check the system for proper operation.
Display the system menu
1. Press the DISP MODE key to select the echo display.
2. While pressing and holding down the TRIP key, press the
MENU key.
Conducting self tests
MODE
1. Press ◄ / ► to select the MODE menu.
CALB
SELF TEST
2. Press
/
to select SELF TEST
OFF SYS ECHO PNL
3. Press
/
to select test.
DEMONSTRATION
OFF
WATER SPEED
T/D
*1
SYS:
Conducts general check of all circuit boards.
ECHO: Checks receiver and transmitter.
NAV
NAV DATA
SPD
Self test menu description
ON
*1
L/L
PNL:
Checks key and switches of display unit.
4. Press the EVENT key to start test.
5. Press the MENU key when test is completed.
*1: Shown when tide
processor is active.
To quit the self test, Select “SELF TEST-OFF” on the MODE
menu and press the EVENT key.
Figure 32 MODE menu
31
Starting the demonstration display
MODE
CALB
OFF SYS ECHO PNL
The demonstration display checks the controls on the display unit
and conducts a loopback test between the display unit and the
transceiver unit.
DEMONSTRATION
1. Press
/
OFF
2. Press
to select ON.
SELF TEST
ON
WATER SPEED
T/D
SPD
*1
3. Press the EVENT key.
*1
The echo display appears and the demonstration begins. "DEMO
DATA OUTPUTTING” appears while the demonstration display is on.
All data shown is for purpose of demonstration; it is not actual data.
NAV
NAV DATA
L/L
*1: Shown when tide
processor is active.
Figure 33 MODE menu
32
to select DEMONSTRATION.
To quit the demonstration display, select “DEMONSTRATIONOFF” on the MODE menu and press the EVENT key.
Self Test Results
System test
The system test check results appear at each power on or
whenever the system check is conducted though the self test.
SYSTEM CHECK
---------CI-800--------IP VOL
IP DSW
66503001**
“00 00”
IP MEM
IP MEM
1 2 3 4 5 6 OK
789
ICP Board ROM prog. no.
IPU Board’s DIP switch setting
in hexadecimal notation
ICP Board memory test
---------CI-810--------CP VOL
CP VOL
CP MEM
CP DSW
66503101**
JCPA Board ROM prog no.
66503110**
1 2 3 4 5 6 7 8 OK JCPA Board memory test
“00 00 00 00”
JCPA Board’s DIP switch
setting in hexadecimal notation
FT VOL 66503201**
JFTA Board ROM prog. no.
FT NEM 1 2 3 4 5 6 7 OK
JFTA Board memory test.
TX DEV 1
OK
TX device test.
IF VOL 66500401**
JIFA Board ROM prog no.
IF MEM 1 2 3
JIFA Board memory test
IF DSW “00 00 00”
JIFA Board’s DIP switch setting
in hexadecimal notation
IF DEV 1
JIFA Board device test
IF AN1
RU3 00V RL2.00V OK
AD Converter reference voltage
test
IF AN2
MLD 2.50V
Temperature sensor signal test
IF AN3
PWR 1.01V
Power check
IF AN4
PTH…RLL…V
Inclinometer signal test
IF AN5
IS1 1.01V IS2 1.01V
ERR No. Error Number
NOTE: **indicates version no.
Test
ICP
JCPA
JFTA
JIFA
Prog. ROM test
5
6
1
1
Data ROM test
6
1-5, 7-8
2-7
2-3
Memory test
1-4, 7-9
33
Error display
“OK” appears for normal memory IC test. For fault NG (No
Good) and asterisk (*) appear next to ROM/RAM number.
Table 3 Error number display and meaning
Error
number
Reason
Circuit board
to check
000
Input voltage
JCPA, JIFA
001
Overheated transducer element
JLGA, JCPA, JIFA*
002
Abnormal Tx B voltage
STXA, UPW, JCPA
003
Tx voltage of beam 1
JCPA, STXA
004
Tx voltage of beam 2
JCPA, STXA
005
Tx voltage of beam 3
JCPA, STXA
006
Tx current of beam 1
JCPA, STXA
007
Tx current of beam 2
JCPA, STXA
008
Tx current of beam 3
JCPA, STXA
100
External position data
JCPA, JIFA
101
External speed data
JCPA, JIFA
102
External time data
JCPA, JIFA
103
External depth data
JCPA, JIFA
104
Heading data
JCPA, JIFA
105
Heading error angle
JCPA, JIFA
106
Water temperature data
JCPA, JIFA
200
External KP input interval
JCPA, JIFA, abnormal external KP
interval
201
Depth sensor input
JLGA, JCPA, JIFA,
faulty temperature sensor
202
Inclinometer roll signal
JCPA, JIFA, no inclinometer data
203
Inclinometer pitch signal
JCPA, JIFA, no inclinometer data
* Abnormally high Tx voltage, abnormally low transducer
impedance, too high Tx duty, faulty temperature sensor (faulty
element), high water temperature, and other factors may also
cause this error display.
34
Echo test
Checking echo display intensity
Press the right and left arrow keys. The SHIFT indication
should change with key operation, between 0 and 100.
Checking echo display range
Press the up and down arrow keys. The echo display range
should in steps of 50 between 0 and 300.
Figure 34 Sample echo test display
Panel test
Press each key on the control panel one by one. The pressed
key’s corresponding “0” on the display should change to “1”.
Figure 35 Panel test display
35
MENU TREE
MAIN MENU
SYSTEM MENU
DEP
LAYER1
LAYER2
LAYER3
REF TIDE DIFFERENCE
ECHO
SPEED RANGE
ECHO DEPTH RANGE
ECHO LEVEL SHIFT
TRK
PLOT RANGE
PLOT MODE
TRACK DISPLAY
MARK
PRESET REFERENCE VALUE
TIDE HISTORY
AVR
SHIP SPD AVR
TIDE AVERAGE
WT SPD DEPTH
MODE
SELF TEST
OFF
SYS
ECHO
PANEL
DEMONSTRATION
OFF
ON
WATER SPEED
T/D
NAV
NAV DATA
SPD
L/L
CALIB
36
GT SPD CALIB
WT SPD CALIB
DRAFT LEVEL
BEARING CALIB
COURSE CALIB
SPECIFICATIONS OF CI-80
1. General
(1) Ground tracking acquirable
depth
(2) Measurable tide range
(3) Measurable tide depth
(4) Measurable ship's speed
(5) Measurable tide speed
(6) Tide differential range
(7) Measuring accuracy
(8) Number of beams
(9) Transmitting frequency
(10) Display type
2. Display
(1) Common displays
(2) Course plot display
(3) Echo display
(4) Other
3. Input/Output Signal
(1) Input signal
(2) Output signal
4.
(1)
(2)
5.
DOPPLER
SONAR
CURRENT
INDICATOR
3m-200m (measure able range 300m)
2m-100m, or 75% of depth, whichever is shallower
10m (measurable from 7m)
Fore/aft: +30kts to –10kts, Port/starboard: +9.9kts to –9.9kts
0kts to 9.9kts
–9.9kts to +9.9kts
Ship’s speed: ±1 (1% +0.1kt), Tide speed: (±2% +0.1kt)
Three (tilt angle 60° each beam)
288kHz
10-inch color CRT
Speed, heading:
Tide speed, direction:
Track display:
Tide vector:
Target point mark:
Event mark:
Ship’s position:
Orientation:
Trip distance indication:
Tide vector:
Tide differential:
layers
Video sounder:
Self test:
demonstration:
Calibration facilities
Range selection
Object flow prediction
360 degree or 32 compass points
Three layers
DR, max. 1000 pts.
Three layers, max. 1000 pts.
25 pts.
25 pts.
Latitude, longitude
Head-up (true motion), North-up
Provided
Three layers, circular graph
Three layers, measurement between two
Three directions
All circuit boards, controls
With internal data
Compass signal (heading): AD-100 format
KP (2 circuits):
Photo isolation (current loop)
CIF/NMEA 0183:
Position data
Log signal:
200/400 pulses, contact signal
KP signal:
TTL
CIF/NMEA 0183:
Speed, tide
CI-7000 format signal
Environmental Conditions
Useable temperature
0°C to 45°C
Relative humidity
85%
Power Supply & Power Consumption
Main’s input
11-40VDC, less than 120W avg., or 100/110/115/220/230VAC,
1φ, 50/60Hz (rectifier required)
SP-1