KSE/KCE-300 Series

Echo Sounder
Service Manual
V1.00E
 Table of Contents
Chapter 1 KSE-300/KCE-300 Block Diagram .............................. 1-1
1.1 KSE-300/KCE-300 BLOCK DIAGRAM .................................................................................... 1-1
1.2 KSE-300/KCE-300 INTER-UNIT COMMUNICATION ................................................................. 1-3
1.3 EXTERNAL CONNECTION DIAGRAM (PIN ASSIGNMENT) ............................................................ 1-4
1.4 EXTERNAL INPUT DATA ......................................................................................................... 1-5
1.4.1 NMEA1 input ....................................................................................................... 1-5
1.4.2 Net depth input .................................................................................................... 1-6
1.4.3 External synchronizing signal input..................................................................... 1-8
1.5 EXTERNAL OUTPUT DATA ...................................................................................................... 1-9
1.5.1 NMEA combined output ...................................................................................... 1-9
1.5.2 NMEA output ....................................................................................................... 1-9
1.5.3 External synchronizing signal output ................................................................ 1-10

Chapter 2 Parts Layout................................................................. 2-1

2.1 PRC-59 PROCESSOR ........................................................................................................... 2-1
2.1.1 Inside of PRC-59 processor (1) .......................................................................... 2-1
2.1.2 Inside of PRC-59 processor (2) .......................................................................... 2-1
2.1.3 Connectors .......................................................................................................... 2-2
2.2 SR-87 TRANSMITTER & RECEIVER ........................................................................................ 2-2
2.2.1 SR-87 transmitter & receiver............................................................................... 2-2
2.2.2 Power unit ........................................................................................................... 2-3
2.3 RC-21 CONTROLLER ............................................................................................................ 2-3
2.3.1 Control panel ....................................................................................................... 2-3
2.3.2 Internal circuit board ........................................................................................... 2-3
2.4 IF-45 INTERFACE ................................................................................................................. 2-4

Chapter 3 Operation Check Procedure ....................................... 3-1

3.1 INSTALLATION CHECK ........................................................................................................... 3-1
3.1.1 Installation locations ............................................................................................ 3-1
3.1.2 Power .................................................................................................................. 3-1
3.1.3 Wiring .................................................................................................................. 3-1
3.1.4 Earth .................................................................................................................... 3-7
3.2 OPERATION CHECK .............................................................................................................. 3-8
3.2.1 Start-up check ..................................................................................................... 3-8
3.2.2 Replay of the standard settings .......................................................................... 3-8
3.2.3 Self monitor ......................................................................................................... 3-9
3.2.4 Image recording ................................................................................................ 3-11
 3.2.5 External input ..................................................................................................... 3-12

Chapter 4 Error checking ............................................................ 4-1

4.1 FAILURE TO START UP (*NOTHING IS DISPLAYED ON THE LCD) ................................................ 4-1
4.2 STOPPING IN THE MIDDLE ...................................................................................................... 4-3
4.3 IMAGES CAN BE FED BUT THERE IS NO ECHO........................................................................... 4-5
4.4 THE GAIN IS LOW .................................................................................................................. 4-6
4.5 MEMORY AND REPLAY FUNCTIONS OF THE SCREENS IS NOT ENABLED. ..................................... 4-7
4.6 FISH SIZE IS NOT CORRECT. .................................................................................................. 4-8

Chapter 5 Error and Alert Messages........................................... 5-1

5-1 ERROR MESSAGES ............................................................................................................... 5-1
5-2 ALERT MESSAGES ................................................................................................................ 5-2

Chapter 6 Checking Switches, LEDs and Check Pins ............... 6-1

6-1 SWITCH CHECKING ............................................................................................................... 6-1
6-2 LED CHECKING .................................................................................................................... 6-3
6-2-1 ESP-10 control circuit board ............................................................................... 6-3
6-2-2 EPW-10 power circuit board ............................................................................... 6-5
6-2-3 ETR-10/11 transmitter & receiver circuit board ................................................... 6-6

Chapter 7 Software Updating ...................................................... 7-1

7.1 SOFTWARE TYPE .................................................................................................................. 7-1
7.2 PC DISPLAY SOFTWARE UPDATING ........................................................................................ 7-1
7.2.1 CFast card replacement ...................................................................................... 7-1
7.2.2 OS setup .............................................................................................................. 7-2
7.2.3 PC display software first startup setting .............................................................. 7-6
7.3 IF-46A CIRCUIT BOARD SOFTWARE UPDATING ........................................................................ 7-9
7.4 ESP-10 CONTROL CIRCUIT BOARD SOFTWARE UPDATING ....................................................... 7-9
7.5 RC-21 CONTROLLER SOFTWARE UPDATING ........................................................................... 7-9

Chapter 8 NMEA Input / Output ................................................... 8-1

8-1 NMEA INPUT ....................................................................................................................... 8-1
8-1-1 RMC (Recommended Minimum Specific GPS Data) ......................................... 8-1
8-1-2 GGA (GPS data (Global Positioning System Fix Data)) ..................................... 8-3
8-1-3 GLL (Geographic Position, Latitude and Longitude)........................................... 8-4
8-1-4 VTG (Course Over Ground and Ground Speed) ................................................ 8-5
8-1-5 MTW (Water Temperature) ................................................................................. 8-6
8-2 NMEA OUTPUT .................................................................................................................... 8-8
8-2-1 DBT (Depth Below Transducer) .......................................................................... 8-8
8-2-2 DBS (Depth Below Surface) ............................................................................... 8-9
8-2-3 DPT (Depth)...................................................................................................... 8-10
8-2-4 BSV (Bottom SV) .............................................................................................. 8-11
Chapter 1 KSE-300/KCE-300 Block Diagram

1.1 KSE-300/KCE-300 block diagram

I-133 Display: Max 2 displays

(The resolution of any products
on the market like the LCD of
SXGA is acceptable.)

RGB cable RC-21 Controller:

Max 2 controllers

PRC-59 Processor

CB-25 Cable

SR-87 Transmitter
& Receiver

Transducer
(max. 2
transducers
only when
KCE-300 is in
use.)
Fig. 1-1 KSE-300/KCE-300 Overall Block Diagram

1-1
 Table 1-1 Unit Explanation
Unit Photo Explanation
・ Power cord using 5-pin connectors is
connected.
・ Standard display
・ Applicable power range: AC100 to 220V
I-133 Display
・ PRC-59 processor is connected by RGB
cable.
・Resolution: SXGA
・Weight: Approximately 24kg

・Power cord using 2-pin connectors is

connected.
・Applicable power range: AC100 to 220V
・SR-87 transmitter & receiver or IF-45
PRC-59 Processor
interface is connected using CB-25 cable.
・RC-21 controller is connected.
・The display is connected using RGB cable.
・Weight: Approximately 6kg

・PRC-59 processor is connected.

・Standard connection cable is 15m.
RC-21 Controller
・ON/OFF operation for the power of all units.
・ Weight: Approximately 0.5kg

・ Power cord using 2-pin connectors is

connected.
・Applicable power: AC100V or 220V
(the internal transformer connection needs to
SR-87 Transmitter
be changed)
& Receiver
・ PRC-59 processor or IF-45 interface is
connected using CB-25 cable.
・The transducer is connected.
・Weight: Approximately 21kg

・For KSE-300: T-178B_38kHz (27kg, shown in

the figure on the left), T-181_70kHz (20kg)
and T-182B_1 20kHz (8kg): a cable length of
Transducer
20m
(T-178B)
・For SCE-300, T-105A_15kHz (15kg),
T-51C_24kHz (11kg), T-51H_50kHz (9kg),
T-51K_75kHz (7kg) and T-105R_200 kHz
(5kg): A cable length of 14m

・Power cord using 2-connector is connected.

・It should be used when two or more units of
IF-45 Interface SR-87 transmitter & receiver are required.
・PRC-59 processor and SR-87 transmitter &
receiver are connected using CB-25 cable.
・Applicable power: AC100V or 220V

1-2
1.2 KSE-300/KCE-300 inter-unit communication

RC-21 Controller

PRC-59 Processor 1

CB-25 Cable
2 3 4

SR-87
Transmitter &
Receiver

Fig. 1-2 KSE-300/KCE-300 Inter-Unit Communication

Table 1-2 KSE-300/KCE-300 Inter-Unit Communication

No. Unit 1 Unit 2 Explanation
PRC-59 Processor
1 RC-21 Controller Operating information
(IF-46A circuit board)
SR-87 Transmitter & Control of transmission and
2 PRC-59 Processor
Receiver (ESP-10 receiving
(PC section)
control circuit board) Transmission data
PRC-59 Processor SR-87 Transmitter &
3
(IF-46A circuit Receiver (ESP-10 External keying signal
board) control circuit board)
4 SR-87 Transmitter & Power control
PRC-59 Processor
Receiver DC+12V

1-3
1.3 External connection diagram (pin assignment)

Table 1-3 J30 Pin Assignment Table

Pin No Signal Name Format Signal Level

A NMEA1_in_A
NMEA1 input, GPS Current loop input
B NMEA1_in_B
C NMEA2_in_A
KNF100 Net Finder input Current loop input
D NMEA2_in_B
E NMEA3_in_A
NMEA3 input, Water temperature Current loop input
F NMEA3_in_B
P EXT_SyncTrig_in TTL level input
External synchronizing signal input
R GND GND
S NMEA_mix _out_A RS-422 +
NMEA combined output
T NMEA_mix _out_B RS-422 -
U NMEA_mix _out_A RS-422 +
NMEA combined output
V NMEA_mix _out_B RS-422 -
W NMEA_mix _out_A RS-422 +
NMEA combined output
X NMEA_mix _out_B RS-422 -
e KCE300_out_A RS-422 +
NMEA output
f KCE300_out_B RS-422 -
h KCE300_out_A RS-422 +
NMEA output
j KCE300_out_B RS-422 -
k KCE300_out_A RS-422 +
NMEA output
l KCE300_out_B RS-422 -
u NET_35kHz_in
v NET_45kHz_in
5V to 120V input
w NET_55kHz_in Net Finder keying input
x NET_65kHz_in
y GND GND
Open collector output
AA NET_Keying_out TTL level output
Net Finder keying output (switching: JP3)
BB GND GND
Open collector output
CC EXT_TRIG_out TTL level output
External synchronizing signal output (switching: JP2)
DD GND GND
MM F_GND
Frame GND Housing earth
NN F_GND

1-4
1.4 External input data

1.4.1 NMEA1 input

・NMEA input specifications

The NMEA input specifications are common to NMEA1 and NMEA3. Table 1-4 below
shows the specifications.
Table 1-4 Input Specifications
Item Specification
In compliance with Ver1.5, Ver2.0 and
NMEA1
Ver3.0.
Baud rate 4800bps
Data bit 8bit
Parity None
Stop bit 1bit
Input level Current loop (0 to 20mA)

・NMEA1 input data

NMEA1 input is only for GPS inputting. Table 1-5 below shows the input sentences.

Table 1-5 NMEA1 Data Specifications

Sentence Data
RMC Latitude and longitude
GGA Latitude and longitude
GLL Latitude and longitude
VTG Vessel speed and course
ZDA Date and time

・NMEA3 input data

NMEA3 input is only for water temperature gauge inputting. Table 1-6 below shows the
input sentences

Table 1-6 NMEA3 Data Specifications

Sentence Data
MTW Water temperature

1-5
1.4.2 Net depth input

・KNF Net Finder input

KNF Net Finder input is only for inputting the net depths and water temperatures for
SONIC Net Finder KNF-100.
This is not for inputting NMEA1 of the GPS, etc.

・Net Finder keying input and output

Net Finder keying input and output is for inputting and outputting net depths of net depth
gauges other than SONIC Net Finder KNF-100.

(1) Standard

HIGH (5.0 to 4.5V)

LOW (0.5 to 0.0V)
Open Collector: Max. 50mA
Keying output

5ms

Select from 0.5s, 1.0s, 1.5s and 2.0s

HIGH (5 to 120V)
LOW (0 to 2V)
Keying input

Net depth 1ms or more

Fig. 1-3 Net Depth Input and Output Standard

1-6
(2) Net Finder keying output cycle setting
Net Finder keying output cycle can be selected from 0.5, 1.0, 1.5 and 2.0 seconds. It
can be set on SW4 of IF-46A circuit board of PRC-59 processor.

Table 1-7 Net Finder Keying Output Cycle Setting

SW4 B1 SW4 B2 Output Cycle
OFF OFF 2 seconds
OFF ON 1.5 seconds
ON OFF 1.0 second
ON ON 0.5 second

(3) Level switching

Net Finder keying output level can be switched between the open collector and TTL
level. It can be set on JP2 of IF-46A circuit board of PRC-59 processor.

Table 1-8 Net Finder Keying Output Level Switching

JP2 Level
Open Open collector
Short TTL (default setting)

1-7
1.4.3 External synchronizing signal input

The standard of the external synchronizing signal input is shown below:

(1) Standard

External synchronizing HIGH (10.0 to 3.0V)

signal input LOW (0.5 to 0.0V)
(negative logic)

0.1ms or more

External synchronizing HIGH (10.0 to 3.0V)

signal input LOW (0.5 to 0.0V)
(positive logic)

0.1ms or more
Fig. 1-4 External Synchronizing Signal Input Standard

(2) Logic switching

The external synchronizing signal input can be switched between negative logic and
positive logic. It can be set on JP5 of IF-46A circuit board of PRC-5 processor.

Table 1-9 Net Finder Keying Output Level Switching

JP5 Logic
1-2 short Negative logic (default setting)
2-3 short Positive logic

1-8
1.5 External output data

The NMEA output specifications are common to NMEA1 and NMEA3. Table 1-10 below
shows the specifications.

Table 1-10 Input Specifications

Item Specifications
Baud rate 4800bps
Data bit 8bit
Parity None
Stop bit 1bit
Output level RS-422

1.5.1 NMEA combined output

The data that are input from NMEA1 and NMEA3 are combined and output.
The combined data are output about 1 to 2 seconds later than the data that are input from
NMEA1 and NMEA3.

1.5.2 NMEA output

Water depth data output is for outputting the water depth and seabed SV calculated by
KSE-300 Sizing Echo Sounder.
Table 1-11 below shows the talker sentences of seabed data and seabed SV.

Table 1-11 NMEA1 Data Specifications

Sentence Data Explanation
SDDBT Water depth
SDDBS Water depth In compliance with
Ver2.0
SDDPT Water depth
SDBSV Seabed SV SONIC’s original

1-9
1.5.3 External synchronizing signal output

The standard of the external synchronizing signal output is shown below.

(1) Standard

HIGH (5.0 to 4.5V)

External synchronizing LOW (0.5 to 0.0V)
signal output
(Negative logic) Open collector: Max. 50mA

5m

HIGH (5.0 to 4.5V)

LOW (0.5 to 0.0V)
External synchronizing
signal output Open collector: Max. 50mA
(Positive logic)

5ms

Fig. 1-5 External Synchronizing Signal Output Standard

(2) Logic switching

The external synchronizing signal output can be switched between negative logic
and positive logic. It can be set on JP4 of IF-46A circuit board of PRC-59 processor.

Table 1-12 Net Finder Keying Output Logic Switching

JP4 Logic
1-2 short Negative logic (default setting)
2-3 short Positive logic

1-10
 KSE-300/KCE-300 Service Manual

Chapter 2 Parts Layout

2.1 PRC-59 processor

2.1.1 Inside of PRC-59 processor (1)

IF-46A circuit board

CFast
PC mother board
adapter

JPC-14A circuit board JPC-28 circuit board

2.1.2 Inside of PRC-59 processor (2)

Switching power
LFA75F-5
JPC-27 circuit
board
Switching power
LFA75F-12

2-1
 KSE-300/KCE-300 Service Manual

2.1.3 Connectors

J-15(AC IN) VGA USB 1 J-25(To SR) J-30

J-12(RM) RC USB 2 EARTH ALARM

(not in use for this Echo Sounder)
2.2 SR-87 transmitter & receiver

2.2.1 SR-87 transmitter & receiver

EPP-11 phase circuit board (for KSE-300)

ETR-11 transmitter & receiver circuit board No.2 (for KCE-300)

EPW-10
power circuit board

ETR-10 transmitter & ESP-10

receiver circuit board control circuit board
(for KSE-300)
ETR-11 transmitter &
receiver circuit board
No.1 (for KCE-300)

Power unit

2-2
 KSE-300/KCE-300 Service Manual

2.2.2 Power unit

Power transformer

Fuse
5A (AC 100V)
3A (AC 220V)

Power lamp Toggle switch

(REMOTE⇔MANUAL)

2.3 RC-21 controller

2.3.1 Control panel

Power key Trackball

User key

Gain key

Shift key L key R key

Range key

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 KSE-300/KCE-300 Service Manual

2.3.2 Internal circuit board

RC-21 circuit board Trackball

2.4 IF-45 interface

Switching power
LFA10F-12-C 5-port unmanaged Ethernet switches
EDS-205A-T

Fuse
250V 1A

J17
J-25
(AC100~220V)
J-25 PRC-59
Earth
SR-87

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 KSE-300/KCE-300 Service Manual

Chapter 3 Operation Check Procedure

3.1 Installation check

3.1.1 Installation locations

The devices should be installed on the recommended installation locations as shown in Table 3-1.
Table 3-1
Device Name Installation location
Transducer Ship bottom
Transmitter & Receiver Sonar room, etc.
Processor Bridge
Controller Bridge
* Notes
・Do not install the devices in locations that may be exposed to condensation or water, such
as close to a refrigerator, the air outlet of an air conditioner or the exit.
・Install the devices in locations where the ambient temperature is within the specified
temperature ranges shown in Table 3-2.
Table 3-2
Device Name Operating Temperature Range
Transmitter & Receiver -5 to 55 °C
Processor -5 to 45 °C

3.1.2 Power

Check that the power voltages of the devices are within the setting ranges shown in Table 3-3.
Table 3-3
Device Name Setting Range
AC100V±10%
Transmitter & Receiver AC220V±10%
(it is set at the factory before shipping)
Processor AC100 to 220V±10%

3.1.3 Wiring

Pay particular attention to the wiring items below:

・The wires of the transmitter & receiver must be connected as shown in the subsequent
pages. (1 to 3)
・The wires between the devices must be installed as shown in the wiring diagram in the
subsequent pages. (1 to 5)
・Make sure that the connectors are not loose.
・Avoid stressful bending of the cables when installing them.

3-1
 Otherwise, malfunction may occur. KSE-300/KCE-300 Service Manual

1. Wiring diagram from the transducer (38kHz: T-178B and 70kHz: T-181) to the transmitter &
receiver (SR-87).

Square connector Square connector

Metal connector

Copper belt

Ship earth

T-178B:38 kHz Transducer

T-181: 70 kHz Transducer

Fig. 3-1 Wiring Diagram between SR-87 Transmitter & Receiver and
Transducers of 38 and 70kHz

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 KSE-300/KCE-300 Service Manual

2. Wiring diagram from the transducer (120kHz: T-182B) to the transmitter & receiver (SR-87)

Square connector Square connector

Metal connector

Copper belt

Ship earth

T-182B: 120kHz Transducer

Fig 3-2 Wiring Diagram between SR-87 Transmitter & Receiver and Transducer of 120kHz

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 KSE-300/KCE-300 Service Manual

3. Wiring diagram from the transducers (15kHz:T-105A, 24kHz:T-51C, 50kHz:T-51K,

100kHz:T-51H and 200kHz:T-105R) to the transmitter & receiver (SR-87)

Otherwise, malfunction may occur.

Square connector
Metal connector

T-105A:15 kHz Transducer

T-51C: 24 kHz Transducer
T51K: 50 kHz Transducer
T51H: 75 kHz Transducer
T105R: 200 kHz Transducer

Metal connector

Metal connector

Copper belt

T-105A:15 kHz Transducer

T-51C: 24 kHz Transducer
T51K: 50 kHz Transducer
T51H: 75 kHz Transducer
T105R: 200 kHz Transducer
Ship earth

Fig. 3-3 Wiring Diagram between SR-87 Transmitter & Receiver and
Transducers of 15, 24, 50, 75 and 200kHz

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 KSE-300/KCE-300 Service Manual

4. Wiring diagram between the processors (PRC-59)

Square Metal
connector connector

Square
connector

Metal
connector

Copper belt

Ship earth
Ship body earth

Fig. 3-4 Wiring Diagram between PRC-59 Processors

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 KSE-300/KCE-300 Service Manual

5. Wiring diagram between IF-45 interface devices

Square connector
Square connector
Square connector
Square connector
Square connector
IF-45 Interface

Ship earth
Metal connector

* This is required only when two to four SR-87 units are connected.

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 KSE-300/KCE-300 Service Manual

3.1.4 Earth

Check that the earth plate of every device is connected to the ship earth.
・SR-87 Transmitter & Receiver
Connect the earth plate shown in Fig. 3-6 to the ship body earth.

Fig. 3-6 Earth Plate of SR-87 Transmitter & Receiver

・PRC-59 Processor
Connect the earth plate shown in Fig. 3-7 with the ship earth.

Fig. 3-7 Earth Plate of PRC-59 Processor

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 KSE-300/KCE-300 Service Manual

3.2 Operation check

3.2.1 Start-up check

Turn ON the power of the dedicated controller, and check the images of the
oscillation line and seabed.

3.2.2 Replay of the standard settings

Turn ON the power, and open the menu (Main→ Memory/Replay→ Replay Setting
→ Standard) to read the standard setting.
Check that the “Setting: Standard” is displayed on the status bar immediately
after reading, as shown below.

Status bar
Setting: Standard

Fig. 3-8 Standard Setting Replay Screen

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 KSE-300/KCE-300 Service Manual

3.2.3 Self monitor

On the self monitor screen, the status of SR-87 transmitter & receiver can be checked.
1) When KSE-300 is in use.
(frequency: 38, 70 and 120kHz)

1
2
3
4
5
6
7
8
9
10
11
12
13
14

Fig. 3-9 Self Monitor Screen (frequencies: 38, 70 and 120kHz)

* The number of the Status changes depending on the number of connected SRs.
Table 3-4 Details of Self Monitor Items (frequencies: 38, 70 and120kHz)
No Descriptions Displayed details Measures for errors
For displaying the connection status of “Connection” or Check the connection of
1
the SR “Disconnection” CB-25.
For displaying the connection status of “Connection” or “Error” Replace the EPW-10 power
2
the transmission power supply circuit board.
For displaying the frequency of the Each frequency -
3
transducer installed.
For displaying whether the “Disconnection” or Replace ETR-11 transmitter &
4
transmission is overloaded. “Error” or “Connection” receiver circuit board.
5 “Disconnection” -
Not in use for 38, 70 and 120kHz.
6 “Disconnection” -
For displaying A/D status. “Disconnection” or Replace the ESP-10 control
7
“Error” or “Connection” circuit board.
8 Not in use for 38, 70 and 120kHz. “Disconnection” -
“Disconnection” or
For displaying the status of the phase “Error” or “High Replace EPP-11 phase circuit
9
circuit board. Precision” or “Low board.
Precision”
10 Offset value of the X-axis of the phase. From -99.9 to 99.9 －
11 Offset value of the Y-axis of the phase. From -99.9 to 99.9 －
For displaying the count number of the Up to 999 Check the CB-25 connection
12 connections made to SR. when other than 1 is
displayed.
13 For displaying the CPU version. - －
14 For displaying the FPGA version. - －
* The “Connection” is displayed in green and “Error” is displayed in red.

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 KSE-300/KCE-300 Service Manual

2) When KCE-300 is in use(Frequencies: 15, 24, 50, 75 and 200 kHz)system.

1
2
3
4
5
6
7
8
9
10
11
12
13
14

Fig. 3-10 Self Monitor Screen (frequencies: 15, 24, 50, 75 and 200 kHz)
* The number of the Status changes depending on the number of connected SR.
Table 3-5 Self Monitor Item Details (frequencies: 15, 24, 50, 75 and 200 kHz)
No Descriptions Displayed details Measures for errors
For displaying the connection status of the “Connection” or Check the CB-25
1
SR “Disconnection” connection.
For displaying the connection status of the Replace the EPW-10
2 “Connection” or “Error”
transmission power supply power circuit board.
For displaying the frequency of the
3 Each frequency -
transducer installed.
Replace ETR-11
For displaying whether the transmission is “Disconnection” or
4 transmitter & receiver
overloaded. “Error” or “Connection”
circuit board (No.1).
For displaying the frequency of the
5 transducer installed. (disconnected when one Each frequency -
frequency is in use.)
For displaying whether the transmission is Replace ETR-11
“Disconnection” or
6 overloaded. (disconnected when one transmitter & receiver
“Error” or “Connection”
frequency is in use.) circuit board (No.2).
“Disconnection” or Replace ESP-10 control
7 For displaying the status of A/D.
“Error” or “Connection” circuit board.
For displaying the status of A/D. “Disconnection” or Replace ESP-10 control
8
(disconnected when one frequency is in use) “Error” or “Connection” circuit board.
9
Not in use when the frequencies are: 15,
10 *** -
24, 50, 75 and 200kHz.
11
Check CB-25 connection
For displaying the count number of
12 Up to 999 if other than 1 is
connections made with SR.
displayed.
13 For displaying the CPU version. - -
14 For displaying the FPGA version. - -
* The “Connection” is displayed in green, and the “Error” is displayed in red.

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 KSE-300/KCE-300 Service Manual

<MEMO>

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 KSE-300/KCE-300 Service Manual

3.2.4 Image recording

When checking an image for the first time, set the range to 200m and take photos to be
used as information for judgment during the next maintenance.
To record a picture, select Main → Display → check the Tool Bar display → and press .

Fig. 3-11 Tool Bar Display

3.2.5 External input

Whether the external input is input can be checked on the line monitor (Fig. 3-12).
To open the line monitor, select Main→ Tool → Line Monitor.
On the Line Monitor screen, the NMEA input and output data are simultaneously
displayed in binary and ASCII. Check whether sea navigation information is input.

Fig. 3-12 Line Monitor

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 KSE-300/KCE-300 Service Manual

The headers that are possible to input (more details are described in Chapter 8.)
1) Input
$RMC: (Recommended Minimum Specific GPS Data)
$GGA: (Global Positioning System Fix Data)
$GLL: (Geographic Position, Latitude and Longitude)
$VTG: (Course Over Ground and Ground Speed)
$ZDA: (Time and Date)

2) Output
$MTW: (Water Temperature)
$DBT: (Depth Below Transducer)
$DBS: (Depth Below Surface)
$DPT: (Depth)
$BSV: (Bottom SV)

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 KSE-300/KCE-300 Service Manual

Chapter 4 Error checking

For problems with the PRC-59 processor of KSE-300/KCE-300, measures to be taken on

site are shown in the flowchart below:

4.1 Failure to start up (*Nothing is displayed on the LCD)

1) The red light of the power button of RC-21 controller

turns ON as shown in Fig. 4-1.

YES NO

Go to 2) 3) The cable of RC-21 controller is tightly connected to PRC-59 processor.

YES NO

4) The power cord of PRC-59 processor is connected. Connect it

tightly.

YES NO

5) Open the cover of PRC-59 process, and check that the LEDs 5) Open the
(RC+12V and D2) of JPC-27 circuit board shown below are turned cover of
ON. (Fig. 4-2)

Fig. 4-2 LEDs on JPC-27 Circuit Board

YES NO

Replace RC-21 Replace the power cord of

controller. PRC-59 processor.

* LCD: Includes I-133, I-136 and any commercially available LCDs.

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 KSE-300/KCE-300 Service Manual

2) The RGB cable of the LCD is tightly connected to PRC-59 processor.

YES NO

6) The power cord of the LCD is connected. Connect it

tightly.

YES NO

Replace the RGB cable. Connect it to

the outlet.

* The above-mentioned measures fail to start up the processor (nothing is displayed on the
LCD), contact our service staff.

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4.2 Stopping in the middle

Turn ON the power.

1) The SONIC log display screen (Fig.4-3) is displayed.

YES NO
Fig. 4-3 SONIC Logo

2) The ES screen is displayed. The CFast card of the software must be

replaced. Contact our service staff.

YES NO

If the ES screen can be (3) The alert message (Fig.4-4) appears.

opened but nothing is
displayed on the screen,
contact our service staff. SR COMMUNICATION ERROR.

CHECK CONNECTION

CHECK

Fig.4-4 Communication Error Message

YES
NO

5) A different alert message is displayed.

4) CB-25 cable is correctly
connected to PRC-59 processor YES NO

and SR-87 transmitter & receiver.

YES NO Refer to Contact our service staff.

Chapter

Go to 6). Connect it by
referring to
Chapter 3.

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 KSE-300/KCE-300 Service Manual

6) The power cord of SR-87 transmitter & receiver is connected.

YES NO

Connect it to
7) Open the cover of SR-87 transmitter & receiver, and check that
the outlet.
EPW-10 power-10 circuit board LEDs (D+5V, D+12V, TXP,
A-12V, A+12V, A-5V and A+5V) are turned ON as shown in the
photo below. (Fig.4-5)

Fig. 4-5 EPW-10 Power -10 Circuit Board LEDs

YES NO

8) LED28 of ESP-10 control circuit board is E. The circuit board may be broken.
Contact our service staff.
YES NO

Refer to Contact our service staff.

Chapter 6.

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4.3 Images can be fed but there is no echo

Turn ON the power

1) TX is selected from the shortcut menu

for TX setting. (Fig. 4-6)

YES NO
Fig. 4-6 TX Setting Screen

2) Open the cover of the SR-87 transmitter & receiver, and check Check the setting.

that the LED of the TXP of EPW-10 power-10 circuit board is ON. (See the red frame in
Fig.4-6)
NO
YES

3) The transducer and SR-87 transmitter The circuit board may be broken.
& receiver are tightly connected. Contact our service staff.

YES NO

The cable may have trouble. Connect them tightly.

Contact our service staff.

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 KSE-300/KCE-300 Service Manual

4.4 The gain is low

Turn ON the power.

1) The TX output for the TX setting in the shortcut

menu is set to 10. (A red frame in Fig.4-7)

YES NO
Fig. 4-7 TX Setting Screen

2) The gain is set to 0. Set the TX setting to 10.

YES NO

Increase the gain value 3) For the TX setting of the shortcut menu, the
of RC-21 controller. MAX gain and the gain offset are set to 0.

YES NO

4) It has been more than 10 years since the first installation. Reset them to 0.

YES NO

The transducer may be deteriorated. Make a note of the coefficient setting in the ES
Contact our service staff. setting of the Main menu, and contact our
service staff.

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4.5 Memory and replay functions of the screens is not enabled

Turn ON the power.

1) A recording medium is connected to the USB port of PRC-59

processor. (either port is OK in the red frame in Fig. 4-8.)

YES NO

2) When the “SPECIFY WHERE TO SAVE” button in Connect a recording

the ES setting of the Main menu is held down, the medium.
Removable Disk can be recognized.

YES NO

3) When the “EXECUTE MEASUREMENT” button of the Recorder Re-connect a

Setting of ES Setting of the Main menu is held down, an error value recording

YES NO

Change the recording medium. Make a note of the recording medium

type, etc., and contact our service staff.

Fig. 4-8 PRC-59 Processor

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4.6 Fish size is not correct

Turn ON the power

1) The fish size setting range is within the fish catch range.

YES NO

2) The fish size is displayed either Set the fish size setting correctly. (Refer to
larger or smaller. the 2-10 in the Handling Manual.)

3) The displayed fish size can be adjusted with the graph gain (Fig. 4-9) of the Fish Size
Graph by holding down the right key in the Fish Size Graph and by checking the graph setting.

When the fish size When the fish

is displayed larger. size is displayed

Decrease the Increase the

graph gain value. graph gain value.

4) Not correct or no change

Fig. 4-9 Graph Gain Setting Screen

The transducer many have an error.
Contact our service staff.

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 KSE-300/KCE-300 Service Manual

Chapter 5 Error and Alert Messages

5-1 Error messages

The error messages are displayed when the function cannot be executed due to an error
in the program.
If the message shown in Fig. 5-1 is displayed, contact our service staff because resetting
is impossible.

Error Message: Table 5-1

Fig. 5-1 Error Message

Table 5-1 Error Message List

No Message Cause Measure
SR-87 transmitter & receiver and
NOT START
1 PRC-59 processor are not correctly
COMMUNICATION WITH SR
connected.
The GPS data are not correctly
input to PRC-59 processor.
NO INFORMATION FROM SEA
2 (For the connection method, refer to
NAVIGATION
Chapter 4 of the Instruction
Manual.)
The data from the net (like KNF,
etc.) are not correctly input to Contact our
NO INFORMATION FROM NET PRC-59 processor. service staff.
3
FINDER (For the connection method, refer to
Chapter 4 of the Instruction
Manual.)
The data from a water temperature
gauge (optional) are not correctly
NO INFORMATION FROM input to PRC-59 processor.
4
WATER TEMP. (For the connection method, refer to
Chapter 4 of the Instruction
Manual.)

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 KSE-300/KCE-300 Service Manual

5-2 Alert messages

The alert messages are displayed when another operation or checking is required.

Alert Message: Table5-2

Fig. 5-2 Alert Message

No Message Cause Measure

COLLAPSED FILE, NO
1 Failure to save the picture. Acquire the picture again.
DISPLAY
DRIVE NO Connect a storage medium
A storage medium like a USB
2 PREPARATION, NO like a USB memory to
memory is not connected.
COPY PRC-59 processor.
Acquire one or more
3 NO FILE No picture is recorded.
pictures.
PLEASE SELECT The save location is not Change the save location to
4
ANOTHER FOLDER specified. the E drive (USB memory).
DISK SIZE OCCUPIED Available USB memory is less Stop recording, and replace
5
(EXCEEDED) than 10MByte. the USB memory.
Connect a storage medium
A storage medium like a USB
6 DRIVE NOT READY like a USB memory to
memory is not connected.
PRC-59 processor.

Table 5-2 Alert Message List

If the measures described in Table 5-2 fail to reset the system, or if any messages other
than those described in the above table appear, contact our service staff.

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 KSE-300/KCE-300 サービスマニュアル

Chapter 6 Checking Switches, LEDs and Check Pins

6-1 Switch checking

The rotary switches (Fig.6-1) on the ESP-10 control circuit board are described.

SW 8 SW 7 SW 2 SW 4 SW 9

Fig. 6-1 Rotary Switches on ESP-10 Control Circuit Board

・SW8: Do not change it.

・SW7: Do not change it.
・SW2: It cannot be used in the CPU mode. Normally, it is set to “6.”
・SW4: It can be used when several SR are connected. Normally, it is set to“0” when
one SR is connected.
Table 6-1 shows the settings when several SR are connected.
Table 6-1 Correlation of SW4 and SR Numbers
SW4 SR Number
0 SR1
1 SR2
2 SR3
3 SR4
4-F SR1

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 KSE-300/KCE-300 Service Manual

* The SR number selected for SW4 is the SR number of the ES assignment. (Fig.6-2)

Fig. 6-2 ES Assignment Screen

・SW9: It is used for selecting the mode. Normally, it is set to “0.”

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 KSE-300/KCE-300 Service Manual

6-2 LED checking

6-2-1 ESP-10 control circuit board

・The seven-segment LED on the ESP-10 control circuit board is described. (Fig.6-3)

LED 28 LED 26 LED 20 LED 17

Fig. 6-3 Seven-Segment LED on ESP-10 Control Circuit Board

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 KSE-300/KCE-300 Service Manual

・Seven-segment LED28 and LED26 on ESP-10 control circuit board are for visually
checking each circuit board and a connection error.
The details are shown in Table 6-2.
Table 6-2 Seven-Segment LED28 and LED26 Displays

LED28 LED26 Description Measure

0 0 Normal ---
Replace ESP-10 control circuit
E 0 Initialization error
board.
The circuit board is wrong
E 1 Frequency error
between slot 1 and slot 2.
Replace ESP-10 control circuit
E 2 Memory error
board.
Replace ESP-10 control circuit
E 3 System start-up error
board.
Replace either ESP-10 control
E 4 Self-check error circuit board or EPP phase circuit
board.
Protocol stuck initialization Replace ESP-10 control circuit
E 5
error. board.
E 6 TCP connection error Check the connection of CB25.
E 7 TCP communication error Check the connection of CB25.
Replace EPW-10 power circuit
E 8 Receiver power error
board.
Replace EPW-10 power circuit
E 9 Transmitter power error
board.
Replace ETR-10/11 transmitter &
E a Transmitter overload
receiver circuit board.
SR connection error (only
E b Check the connection of CB25.
SR2-4)

・Seven-segment LED20 and LED17 of ESP-10 control circuit board are for visually
checking the operating status between SR-87 transmitter & receiver and PRC-59
processor.
The details are shown in Table 6-3.
Table 6-3 Seven-Segment LED20 and LED17 Descriptions and Details
LED20 LED17 Descriptions Details
While RAM/ROM
0 1
checking
0 2 Start-up status While initialization
0 3 While self-checking
Waiting for PRC
0 4 PRC communication communication to be
ready.
Waiting for the
0 5
transmission trigger.
Transmitter & receiver
0 6 While receiving operation
operation status
While sending the
0 7
received data.

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 KSE-300/KCE-300 Service Manual

6-2-2 EPW-10 power circuit board

・The LEDs on EPW-10 power circuit board are described. (Fig.6-4)

Fig. 6-4 LEDs on EPW-10 Power Circuit Board

・Each LED on EPW-10 power circuit board shown in Table 6-4 is for visually checking
whether the required power is supplied.
・The details are shown in Table 6-4.
Table 6-4 LED on EPW-10 Power Circuit Board

Silk Name Normal

Description
Time
POL OFF It displays that the power is not in the overload state.
A-12V
A+12V It displays that the power required for the analog
A-5V circuit is being supplied.
A+5V
ON
It displays that the power required for the digital
D+5V
circuit is being supplied.
D+12V It displays that the power required for the
TXP transmission circuit is being supplied.

* If ON and OFF of the LED are reversed (OFF→ON and ON→OFF), it may be an error of
EPW-10 control circuit board. Contact our service staff.

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6-2-3 ETR-10/11 transmitter & receiver circuit board

・The LEDs on ETR-10/11 transmitter & receiver circuit board are described. (Fig. 6-5)

Fig. 6-5 LEDs on ETR-10/11 Transmitter & Receiver Circuit Board

・The LEDs on ETR-10/11 transmitter & receiver circuit board shown in Table 6-5 are for
visually checking the state of the transmitter & receiver.
・The details are shown in Table 6-5.
Table 6-5 LEDs on ETR-10/11 Transmitter & Receiver Circuit Board

Silk Name Normal Time Description

SENS ON It displays that the transducer is connected.
It displays that the transmission drive signal is input from
Flashing for
TX_PULSE ESP-10 control circuit board. It flashes independent of
transmission
“SENS” and “TX_OL.”
It displays that the transmission voltage is output to the
Flashing for
TX transducer.
transmission
It flashes when “SENS” is ON, and “TX_OL” is OFF.
It displays that the power required for transmission is being
D+144V ON
supplied.
TX_OL OFF It displays that the TX output is not overloaded.

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Chapter 7 Software Updating

7.1 Software type

Table 7-1 below shows the software types for the units of KSE-300 Echo
Sounder/KCE-300 Echo Sounder.
Table 7-1 Software for Units
Unit Software Function
For displaying the ES image, and for
PC display software
calculating the fish size.
PRC-59 Processor For inputting the data for the GPS, the
IF-46A circuit board
water temperature gauge and the net
software
depth gauge.
For controlling the transmission and
SR-87 Transmitter ESP-10 control circuit receiving of the Echo Sounder.
& Receiver board software For transmitting the ES data to PRC-59
processor.
Key inputting and trackball inputting of
RC-21 Controller RC-21 controller software
the controller.

7.2 PC display software updating

7.2.1 CFast card replacement

The CFast card mounted on PRC-59 processor can be replaced according to the
procedure shown in the figure below.
1) Open the cover of PRC-59 processor.
* The power cord must be removed before opening the cover.
2) Remove the CFast from the CFast adapter. (Fig.7-1)

CFast

Fig. 7-1 CFast Insert Position

3) Insert a CFast to be replaced into the adapter from which the CFast was removed in 2).

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 KSE-300/KCE-300 Service Manual

7.2.2 OS setup

The required time for OS to set up is about 2 minutes and 30 seconds when the power is
turned ON for the first time after the CFast card is replaced. From the second time of
turning ON the power, the OS setup screen is not displayed.

Turn ON the power

BIOS screen
(about 5 sec.)

Black screen
(20 sec.)

BIOS screen
(about 5 sec.)

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Device
install screen
(about 20 sec.)

System setting screen

(about 20 sec.)

Restart notification
screen (about 15 sec.)

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 KSE-300/KCE-300 Service Manual

Re-start

BIOS screen
(about 5 sec.)

Black screen
(about 20 sec.)

Initialization
preparation screen
(about 5 sec.)

Black screen
(about 10 sec.)

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 KSE-300/KCE-300 Service Manual

Welcome screen
(about 3 sec.)

Log-off and
shutdown screen
(about 10 sec.)

End of
Re-start Setting up

Display software first startup screen

transition
To Chapter 7.2.3

Fig. 7-2 OS Setup Transition

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 KSE-300/KCE-300 Service Manual

7.2.3 PC display software first startup setting

When PC display software is started for the first time, ES setting is required on the ES
assignment screen according to the connected SR-87 transmitter & receiver connection
structure. From the second time, the ES Assignment screen will not be displayed unless
the SR-87 transmitter & receiver connection structure is changed.

Re-starting after OS
setup From Chapter 7.2.2

BIOS screen
+
Black screen
+
Welcome screen

SONIC logo screen

(about 1sec)

Title display screen

The version number in the figure
on the left is an example
(about 3 sec.)

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 KSE-300/KCE-300 Service Manual

System structure
check screen
(about 7 sec.)

NO ES SETTING NO ES SETTING

RETRY ES SETTING No ES setting

RETRY ES SETTING
CHECK
alert display
CHECK

Press the “OK” button.

ES Assignment screen

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 KSE-300/KCE-300 Service Manual

Press the up or down

arrow button with the L
key to select the SR
number.
* The number in the
figure is an example.

Press the up or down

arrow button with the L
key to select the
frequency.
* The frequency in the
figure is an example.

Press OK button
with the L key.

Setting for the first startup is completed.

Fig. 7-3 PC Display Software First Startup Screen Transition

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 KSE-300/KCE-300 Service Manual

7.3 IF-46A circuit board software updating

Updating of IF-46A circuit board software is performed by replacing the circuit board,
therefore, this software is updated by replacing IF-46A circuit board mounted on PRC-59
processor. (For the circuit board installation position, refer to Chapter 2.1.1.)

7.4 ESP-10 control circuit board software updating

Updating of ESP-10 control circuit board software is performed by replacing the circuit
board, therefore, this software is updated by replacing ESP-10 control circuit board
mounted on SR-87 transmitter & receiver. (For the circuit board installation position, refer
to Chapter 2.2.1.)

7.5 RC-21 controller software updating

Updating of RC-21 controller software is performed by replacing the circuit board,

therefore, this software is updated by replacing circuit board mounted on RC-21 controller.
(For the circuit board installation position, refer to Chapter 2.3.2.)

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＜MEMO＞

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 KSE-300/KCE-300 Service Manual

Chapter 8 NMEA Input / Output

Details of NMEA input are described below.

8-1 NMEA input

8-1-1 RMC (Recommended Minimum Specific GPS Data)

1) Ver1.5

$GPRMC,hhmmss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,ddmmyy,x.x,a<CR><LF>
1 23 4 5 6 7 8 9 10 11
1: UTC time
2: Status (A: Enabled / V: Disabled)
3-4: Latitude
5-6: Longitude
7: Over-the-ground vessel speed [kt]
8: Course (true bearing)
9: Date
10-11: Magnetic bearing variation

2) Ver2.0

$GPRMC,hhmmss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,ddmmyy,x.x,a*hh<CR><LF>
1 23 4 5 6 7 8 9 10 11 12
1: UTC time
2: Status (A: Enabled / V:Disabled)
3-4: Latitude
5-6: Longitude
7: Over-the-ground vessel speed [kt]
8: Course (true bearing)
9: Date
10-11: Magnetic bearing variation
12: Checksum

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 KSE-300/KCE-300 Service Manual

3) Ver3.0

$GPRMC,hhmmss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,ddmmyy,x.x,a,a*hh<CR><LF>
1 234 5 6 7 8 9 10 11 12 13
1: UTC time
2: Status (A: Enabled / V: Disabled)
3-4: Latitude
5-6: Longitude
7: Over-the-ground vessel speed [kt]
8: Course (true bearing)
9: Date
10-11: Magnetic bearing variation
12: Mode indicator
13: Checksum

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 KSE-300/KCE-300 Service Manual

8-1-2 GGA (GPS data (Global Positioning System Fix Data))

1) Ver1.5

$GPGGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M<CR><LF>
1 2 3 4 56 7 8 9 10 11 12
1: Time (UTC)
2: Latitude
3: N-North latitude, S-South latitude
4: Longitude
5: W-West longitude, E-East longitude
6: GPS quality
7: Satellite in use
8: HDOP
9: Height
10: Height unit [m]
11: Geoid height
12: Height unit [m]

2) Ver2.0/Ver3.0

$GPGGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
1 2 3 4 56 7 8 9 10 11 12 13 14 15
1: Time (UTC)
2: Latitude
3: N-North latitude, S-South latitude
4: Longitude
5: W-West longitude, E-East longitude
6: GPS quality
7: Satellite in use
8: HDOP
9: Height
10: Height unit[m]
11: Geoid height
12: Height unit [m]
13: DGPS data age
14: DGPS reference station ID
15: Checksum

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8-1-3 GLL (Geographic Position, Latitude and Longitude)

1) Ver1.5

$GPGLL,llll.ll,a,yyyyy.yy,a<CR><LF>
1 2 3 4
1: Latitude
2: N-North latitude, S-South latitude
3: Longitude
4: W-West longitude, E-East longitude

2) Ver2.0

$GPGLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,a*hh<CR><LF>
1 2 3 4 5 67
1: Latitude
2: N-North latitude, S-South latitude
3: Longitude
4: W-West longitude, E-East longitude
5: Time (UTC)
6: Status, A-Enabled、V-Disabled
7: Checksum

3) Ver3.0

$GPGLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A,a*hh<CR><LF>
1 2 3 4 5 67 8
1: Latitude
2: N-North latitude, S-South latitude
3: Longitude
4: W-West longitude, E-East longitude
5: Time (UTC)
6: Status, A-Enabled、V-Disabled
7: Mode indicator
8: Checksum

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 KSE-300/KCE-300 Service Manual

8-1-4 VTG (Course Over Ground and Ground Speed)

1) Ver1.5

$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K<CR><LF>
12 34 56 78
1-2: True bearing
3-4: Magnetic bearing
5-6: Over-the-ground vessel speed [kt]
7-8: Over-the-ground vessel speed [km/h]

2) Ver2.0

$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>
12 34 56 78 9
1-2: True bearing
3-4: Magnetic bearing
5-6: Over-the-ground vessel speed [kt]
7-8: Over-the-ground vessel speed [km/h]
9: Checksum

3) Ver3.0

$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
12 34 56 78 9 10
1-2: True bearing
3-4: Magnetic bearing
5-6: Over-the-ground vessel speed [kt]
7-8: Over-the-ground vessel speed [km/h]
9: Mode indicator
10: Checksum

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 KSE-300/KCE-300 Service Manual

8-1-5 MTW (Water Temperature)

1) Ver1.5

$YCMTW,x.x,C<CR><LF>
12
1-2: Water temperature [°C]

2) Ver2.0/ Ver3.0

$YCMTW,x.x,C*hh<CR><LF>
12 3
1-2: Water temperature [°C]
3: Checksum

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8-1-6 ZDA (Time and Date)

1) Ver1.5

$GPZDA,hhmmss.ss,xx,xx,xxxx,xx<CR><LF>
1 2 3 4 5
1: Time (UTC)
2: Day (from 01 to 31 (UTC))
3: Month (from 01 to 12(UTC))
4: Year (UTC)
5: Time zone 0 to ±13 east longitude-, west longitude +

2) Ver2.0/ Ver3.0

$GPZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh<CR><LF>
1 23 4 56 7
1: Time (UTC)
2: Day (from 01 to 31 (UTC))
3: Month (from 01 to 12(UTC))
4: Year (UTC)
5: Time zone 0 to ±13 east longitude-, west longitude +
6: Time zone from 0 to +59 (min.)
7: Checksum

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 KSE-300/KCE-300 Service Manual

8-2 NMEA output

8-2-1 DBT (Depth Below Transducer)

Output by NMEA0183 Ver2.0

$SDDBT,x.x,f,x.x,M,x.x,F*hh<CR><LF>
1 2 34 56 7
1-2: Water depth (Feet)[ft]
3-4: Water depth (Meter)[m]
5-6: Water depth (Fathom)[fm]
7: Checksum

[Note] Unit
1ft=0.3048m
1fm=6ft=1.8288m

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 KSE-300/KCE-300 Service Manual

8-2-2 DBS (Depth Below Surface)

Output by NMEA0183 Ver2.0

$SDDBS,x.x,f,x.x,M,x.x,F*hh<CR><LF>
12 34 56 7
1-2: Water depth (Feet)[ft]
3-4: Water depth (Meter)[m]
5-6: Water depth(Fathom)[fm]
7: Checksum

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 KSE-300/KCE-300 Service Manual

8-2-3 DPT (Depth)

Output by NMEA0183 Ver2.0

$SDDPT,x.x,x.x*hh<CR><LF>
1 2 3
1: Water depth [m] from the transducer
2: Offset [m] from the transducer
(Positive: from the transducer, Negative: from the keel)
3: Checksum

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 KSE-300/KCE-300 Service Manual

8-2-4 BSV (Bottom SV)

Output in the SONIC original format

$SDBSV,xxx,x,xxx.xx,xxx.xx,xxx.x,xxx.x,xxx,xxxx*hh<CR><LF>
1 2 3 45 6 7 8 9

1: ES frequency
2: Beam (P: split, S: single ES)
3: Water depth [m]
4: Seabed SV value (0.0 to -200)
5: Seabed detection rate [%]
6: Seabed offset (0 to 10.0)
7: Seabed SV range (0 to 500)
8: Seabed integration PING number (1 to 500)
9: Checksum

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Date Version Name Description

2015/01/30 V1.00 First version

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