Furuno IC-350 User manual

ALARM UNIT
IC-350
OPERATOR'S MANUAL
www.furuno.com
Model

i
IMPORTANT NOTICES
General
• This manual has been authored with simplified grammar, to meet the needs of international users.
• The operator of this equipment must read and follow the descriptions in this manual. Wrong oper-
ation or maintenance can cancel the warranty or cause injury.
• Do not copy any part of this manual without written permission from FURUNO.
• If this manual is lost or worn, contact your dealer about replacement.
• The contents of this manual and equipment specifications can change without notice.
• The example screens (or illustrations) shown in this manual can be different from the screens you
see on your display. The screens you see depend on your system configuration and equipment
settings.
• Save this manual for future reference.
• Any modification of the equipment (including software) by persons not authorized by FURUNO will
cancel the warranty.
• The following concern acts as our importer in Europe, as defined in DECISION No 768/2008/EC.
- Name: FURUNO EUROPE B.V.
- Address: Ridderhaven 19B, 2984 BT Ridderkerk, The Netherlands
• All brand and product names are trademarks, registered trademarks or service marks of their re-
spective holders.
How to discard this product
Discard this product according to local regulations for the disposal of industrial waste. For disposal
in the USA, see the homepage of the Electronics Industries Alliance (http://www.eiae.org/) for the
correct method of disposal.
How to discard a used battery
Some FURUNO products have a battery(ies). To see if your product has a battery, see the chapter
on Maintenance. Follow the instructions below if a battery is used. Tape the + and - terminals of bat-
tery before disposal to prevent fire, heat generation caused by short circuit.
In the European Union
The crossed-out trash can symbol indicates that all types of batter-
ies must not be discarded in standard trash, or at a trash site. Take
the used batteries to a battery collection site according to your na-
tional legislation and the Batteries Directive 2006/66/EU.
In the USA
The Mobius loop symbol (three chasing arrows) indicates that Ni-
Cd and lead-acid rechargeable batteries must be recycled. Take
the used batteries to a battery collection site according to local
laws.
In the other countries
There are no international standards for the battery recycle symbol. The number of symbols can in-
crease when the other countries make their own recycle symbols in the future.
Cd
Ni-Cd Pb

ii
SAFETY INSTRUCTIONS
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Warning, Caution Mandatory Action
Prohibitive Action
The installer and operator of this equipment must read these safety instructions before
attempting to install or operate the equipment.
WARNING
If something is dropped into the equip-
ment or water leaks into the equipment,
turn off the power at the switchboard
immediately.
Continued use of the equipment can cause
fire or electrical shock.
If the equipment is emitting smoke or
fire, shut off the power at the switch-
board immediately.
Continued use of the equipment can cause
fire or electrical shock. Consult a FURUNO
agent or dealer for advice.
If the equipment is acting abnormally,
shut off the power at the switchboard
immediately.
Continued use of the equipment can cause
fire or electrical shock. Consult a FURUNO
agent or dealer for advice.
WARNING
Do not operate a DISTRESS button
unless YOUR vessel is in distress.
The distress signal is sent when a
DISTRESS button is operated. If the
distress signal is accidentally sent, contact
a coast station immediately to report
accidental distress transmission.
Do not place liquid-filled containers on
the top of the equipment.
Fire or electrical shock can result.
Do not operate the equipment with wet
hands.
Electrical shock can result.
Do not disassemble or modify the
equipment.
Electrical shock, fire or bodily injury can
result.
CAUTION
If distress is accidentally sent, immediately
contact a coast station and provide the
following information:
- Ship's name
- Ship's call sign and DSC number
- Position at time of distress transmission
- Time of distress transmission

SAFETY INSTRUCTIONS
iii
Precautions for the installer
Be sure the voltage at the ship's switch-
board is compatible with the voltage
rating of this equipment.
The rated voltage of this equipment is
24 VDC. Damage to the equipment can
result if the equipment is connected to an
incompatible power supply.
Observe the compass safe distances
shown below to prevent interference to
a magnetic compass.
Standard compass: 1.20 m
Steering compass: 0.75 m
CAUTION
WARNING
Shut off the power at the switchboard
before beginning the installation.
Fire or electrical shock can result if the
equipment is powered while it is being
installed.
Use only the specified power cable.
Fire or electrical shock can result if a
different cable is used.
Do not install the equipment where it
can get wet from rain or water splash.
Fire or electrical shock can result if water
gets inside the equipment.

iv
TABLE OF CONTENTS
FOREWORD .................................................................................................................. v
SYSTEM CONFIGURATION ........................................................................................ vi
1. INSTALLATION ...................................................................................................... 1
1.1 Equipment Lists........................................................................................................... 1
1.2 How to Install the Alarm Unit....................................................................................... 1
1.3 Connections ................................................................................................................ 2
1.3.1 Where to connect the cables ............................................................................... 2
1.3.2 Cable fabrications ................................................................................................ 3
1.4 Settings ....................................................................................................................... 6
2. OPERATION ........................................................................................................... 9
2.1 Controls and Indicators ............................................................................................... 9
2.2 How to Set the Unit to Stand-by.................................................................................. 9
2.3 When You Receive a Distress Signal ....................................................................... 10
2.4 How to Send a Distress Signal.................................................................................. 10
2.5 How to Operate the Dual Alarm Unit......................................................................... 11
3. MAINTENANCE .................................................................................................... 12
3.1 Maintenance.............................................................................................................. 12
3.2 How to Clean the Equipment .................................................................................... 12
3.3 Circuit Breaker .......................................................................................................... 13
3.4 Troubleshooting ........................................................................................................ 13
3.5 Equipment Test ......................................................................................................... 13
SPECIFICATIONS ................................................................................................... SP-1
OUTLINE DRAWING ................................................................................................. D-1
INTERCONNECTION DIAGRAM .............................................................................. S-1

v
FOREWORD
Congratulations on your choice of the FURUNO IC-350 Alarm Unit. We are confident you will see
why the FURUNO name has become synonymous with quality and reliability.
Since 1948, FURUNO Electric Company has enjoyed an enviable reputation for quality marine
electronics equipment. This dedication to excellence is furthered by our extensive global network
of agents and dealers.
This equipment is designed and constructed to meet the rigorous demands of the marine environ-
ment. However, no machine can perform its intended function unless installed, operated and
maintained properly. Please carefully read and follow the recommended procedures for installa-
tion, operation and maintenance.
Features
The IC-350 globally controls the distress functions of all GMDSS equipment connected to it. The
main features are
• Connects to six GMDSS units: one SSB radiotelephone, two VHF radiotelephones, two Inmar-
sat-C mobile earth stations (MES), and one NAVTEX receiver.
• Dedicated DISTRESS buttons for sending a distress alert.
• MUTE ALARM button stops audio alarm.
• Second alarm unit (option) allows control from a remote location.
CE declaration
With regards to CE declarations, please refer to our website (www.furuno.com) for further infor-
mation about RoHS conformity declarations.

vi
SYSTEM CONFIGURATION
Standard configuration shown with solid lines.
ALARM UNIT
IC-350
(No.1)
External
Alarm
SSB
Radiotelephone
No.1 VHF
Radiotelephone
No. 2 VHF
Radiotelephone
No. 1
Inmarsat-C MES
No. 2
Inmarsat-C MES
NAVTEX
Receiver
Alarm Unit
IC-350
(No.2)
Rectifier
PR-62
24 VDC
100/110/
220/230 VAC
1φ, 50/60 Hz
AC-DC Power
Supply Unit
PR-240
24 VDC
Category Program number
Protected from
the weather 0550235-01
Incoming
Indicator
IC-303
100 - 115/
200 - 230 VAC
1φ, 50/60 Hz
Can be connected only
when SSB radiotelephone
FS-1570/2570/5070 is
connected.
(Backed-up battery)
(Power source which is
backed-up by radio battery)

1
1. INSTALLATION
1.1 Equipment Lists
Standard supply
Optional supply
1.2 How to Install the Alarm Unit
See the outline drawing at the back of this manual for dimensions. Install the alarm unit in a con-
sole. Make a cutout in the location for the unit, the dimensions of which are 277(W)×287(H). Set
the unit to the cutout. Fasten the unit with four self-tapping screws (supplied).
Name Type Code No. Qty Remarks
Alarm Unit IC-350 — 1
Installation Materials CP05-11701 000-041-190 1 set Self-tapping screws (φ4×20, 4pcs)
(000-158-850-10)
Accessory FP05-06401 001-058-090 1 SPARE sticker
Name Type Qty Remarks
Rectifier PR-62 1 AC input, 24 VDC output
AC-DC Power Supply PR-240 1 AC, DC input, 24 VDC output
Alarm Unit IC-350 1 for dual connection
R8
#100
300 ±0.5
170 ±0.5
10-20
270 30
277 ±2
287 ±2
85
CABLE ENTRY
CUTOUT DIMENSIONS (REFERENCE)

1. INSTALLATION
2
1.3 Connections
1.3.1 Where to connect the cables
The cable connections for external equipments are as shown in the following figure. Refer to the
interconnection diagram at the back of this manual for details.
External Alarm
NAVTEX Receiver
Inmarsat C MES
FELCOM 18
Junction Box
IC-318
NX-700 Receiver NX-7001
J403
TB #3 - 4
TTYCS(LA)-1
DPYC-1.5
TTYCS(LA)-1
TTYCS(LA)-1
POWER *1
24 VDC
DPYC-1.5
SSB Radiotelephone
FS-1575/2575/5075
Transceiver TB7
A
lerm unit *2
IC-350 (No.2) J3
TTYCS(LA)-4
TTYCS-4(LA)
VHF Radiotelephone
FM-8900S
Junction box
IF-8900
VHF Radiotelephone
FM-8900S
Junction box
IF-8900
TB8
TB8
TTYCS(LA)-4
TTYCS(LA)-4
24VDC
DST
BZ
RCV
BZ/
IC-350
DUAL No.1 No.2
No.1 No.2
NAVTEX
EXT
ALARM
No.2
EXT
ALARM
No.1
MF/HF
VHF
INMARSAT-C
+
-
Inmarsat C MES
FELCOM 18
Junction Box
IC-318
TB #3 - 4
*2
IC-303 *3
*1: Power must be supplied from a power source which is backed-up by radio battery.
*2: IC-350 dual installation requires setting modification.
*3: The IC-303 can be connected only when the SSB radiotelephone FS-1570/2570/5070 is connected.
The dashed line indicates optional equipment.

1. INSTALLATION
3
1.3.2 Cable fabrications
This section shows the cable fabrications. The text between parentheses in the section titles are
the names of Japan Industry Standard (JIS) cables. Use those cables or their equivalents.
Power cable (DPYC-1.5)
Signal cable (TTYCS(LA)-1/4)
Conductor
S = 1.5 mm
φ = 1.56 mm
2
Armor
Sheath
φ = 11.7 mm
5050
3030
8 to 98 to 9
130130
Armor Sheath Core
Set this section in
cable clamp
Vinyl tape
Braided shield
Armor Sheath
Pull cores from here and cut inclusion
Set this section in
cable clamp
8 to 9
6
Drain wireDrain wire
130130
5050
3030
6060
Armor Sheath
Vinyl tape
Pass the plastic tube (local supply)
onto the drain wire.
Attach the crimp-on lug to the drain wire
Cores
2: TTYCS(LA)-1
8: TTYCS(LA)-4
Attach WAGO
connector
TTYCS-1/4
TTYCSLA-1/4

1. INSTALLATION
4
Cable for external alarm (DPYC-1.5)
How to fasten a WAGO connector
Attach WAGO
connector
50
50
30
30
8 to 9
8 to 9
130
130
Armor Sheath Core
Set this section in
cable clamp
Vinyl tape
1. Twist conductors.
2. Set opener as shown and push down.
3. Set core to hole.
4. Release opener.
5. Pull the core to be sure it is inserted correctly.
Terminal opener (located inside the equipment)
CoreTwist.
Push

1. INSTALLATION
5
How to connect the cables
The lid at the bottom of the chassis seals the bottom cable entrance. To lead in cables through
the bottom of the chassis (rather than the rear), unfasten two screws to remove the lid and use
the lid to cover the rear panel cable entrance.
Cable clamp
Set sheath of cables
in cable clamp.
Cable shield
Fix crimp-on lugs
with screws.
Power Cable
To SSB Radiotelephone To External Alarm
To NAVTEX Receiver
To No. 2 Inmarsat C MES
To No. 1 Inmarsat C MES
Cable entrance lid
At bottom of unit
To No. 1 VHF Radiotelephone
To No. 2 VHF Radiotelephone
Not used
To No.2 Alarm unit (IC-350)
S102 DIP SW
The dashed line indicates optional equipment.

1. INSTALLATION
6
1.4 Settings
How to set the external equipment
Set the DIP switch S101 on the PANEL Board (05P0820) according to equipment connected. All
switches are in the OFF position in the factory setting. Set a switch in the ON position if the related
equipment is not connected.
“SPARE” sticker
If you connect one Inmarsat C only, put the “SPARE” stickers on No.2 INMARSAT indications for
LED lamp and DISTRESS button. The “SPARE” stickers are attached on the reverse side of the
operation panel.
8 7 6 5 4 3 2 1 OFF
ON
(All OFF in default)
DIP Switch
S101
PANEL Board
(05P0820)
1 No.1 VHF ENABLE DISABLE
2 No.2 VHF ENABLE DISABLE
3 MF/HF ENABLE DISABLE
4 No.1 INMARSAT ENABLE DISABLE
5 No.2 INMARSAT ENABLE DISABLE
6 NAVTEX ENABLE DISABLE
7 NAVTEX SEL NC NO
8
OFF ON
#1-#6
ON: Equipment not connected.
OFF: Equipment connected.
#7
NX-700: OFF
NX-500: ON

1. INSTALLATION
7
Short plug position and SSB radiotelephone
FS-1570/2570/5070: Change the position of the short plug of pin headers J101, J203, J204, J205,
J301, J302 as shown in the figure below.FS-1575/2575/5075: No adjustment is necessary; use
the default positions. (All short plugs are between #2 & 3.)
J101
J205 J204 J203
1
2
3
J301
㻝㻌㻌㻌㻌㻌㻞㻌㻌㻌㻌㻌㻟
J302
㻝㻌㻌㻌㻌㻌㻞㻌㻌㻌㻌㻌㻟 Short plug
3
2
1
3
2
1
3
2
1
For FS-1570/2570/5070, set the short plugs of J205, J204, J203,
J301, J302 and J101 between pins 2 & 3.
J102 is for program update only to set between pins 2 & 3.
MAIN board
05P0819

1. INSTALLATION
8
The setting for dual IC-350 (option)
Set the dip switch S102 on the MAIN pcb for IC-350 dual installation.
• Set the dip switch #1 on S102 to ‘ON’ for No.1 IC-350. (#2 to #4: OFF)
• Set the dip switch #1 and #2 on S102 to ‘ON’ for No.2 IC-350. (#3 and #4: OFF)
Refer to the figure on page 4 for the location of S102.
• Set the both dip switch S101 of No. 1 and No. 2 IC-350s to same condition.
Refer to the figure on page 5 for the location of S101.
• Shorten the pin-header #1 and #2 of J301 and J302 on the main board 05P0819 as shown in
the following figure. (Default setting)
Refer to the sticker on the behind of lid for jumper switch settings.
㻝㻌㻌㻌㻞㻌㻌㻌㻟㻌㻌㻌㻠
IC-350 (No.2)
S102
㻝㻌㻌㻌㻞㻌㻌㻌㻟㻌㻌㻌㻠
IC-350 (No.1)
S102
㻻㻺
㻻㻲㻲
㻔㻰㼑㼒㼍㼡㼘㼠㻦㻌㻻㻲㻲㻕
㻻㻺
㻻㻲㻲
㻶㻟㻌㻼㻻㻾㼀
㻲㼁㻺㻯㼀㻵㻻㻺
㻶㻟㻜㻝
㻶㻟㻜㻞
㻰㼁㻭㻸㻌㻲㻿㻙㼤㼤㻣㻜
㻰㼑㼠㼍㼕㼘㻌㼒㼛㼞㻌㻶㻟㻜㻝㻛㻟㻜㻞
㻝㻌㻌㻞㻌㻌㻟
㻝
㻞
㻟
㻠
㻡
㻢
㻾㻰㻙㻴
㻾㻰㻙㻯
㻺㻚㻯㻚
㼀㻰㻙㻭
㼀㻰㻙㻮
㻲㻳
㻝
㻞
㻟
㻠
㻡
㻝
㻞
㻟
㻠
㻡
㼀㻰㻙㻴
㼀㻰㻙㻯
㻾㻰㻙㻴
㻾㻰㻙㻯
㻲㻳
㻝
㻗 㻙
㻞
㻟
㻠
㻡
㻢
㻵㻺㻙㻴
㻵㻺㻙㻯
㻻㼁㼀㻙㻴
㻻㼁㼀㻙㻯
㻯㼀㻻㻙㻯
㻲㻳
㻾㻰㻙㻴
㻾㻰㻙㻯
㻺㻚㻯㻚
㼀㻰㻙㻭
㼀㻰㻙㻮
㻲㻳
㼀㻮㻝 㻶㻞
㻶㻞㻜㻡 㻶㻞㻜㻠
㻹㻲㻛㻴㻲㻔㻶㻞㻕
㻵㻺㼀㻱㻾㻲㻭㻯㻱㻌㼀㼅㻼㻱
㻿㻱㻾㼂㻵㻯㻱㻌㻼㻻㻾㼀㻔㻶㻝㻕㻌㼁㻿㻭㻳㻱
㻹㻲㻛㻴㻲㻔㻶㻞㻕
㻵㻺㼀㻱㻾㻲㻭㻯㻱㻌㼀㼅㻼㻱
㻶㻟㻌㻼㻻㻾㼀
㻲㼁㻺㻯㼀㻵㻻㻺
㻜㻡㻼㻜㻤㻝㻥
㻶㼁㻹㻼㻱㻾㻌
㻿㻱㼀㼁㻼
㻜㻡㻼㻜㻤㻝㻥
㻰㻵㻼㻌㻿㼃㻵㼀㻯㻴㻌
㻿㻱㼀㼁㻼
㻜㻡㻼㻜㻤㻝㻥
㼀㻱㻾㻹㻵㻺㻭㻸㻌
㻯㻻㻺㻺㻱㻯㼀㻵㻻㻺
㻼㻻㼃㻱㻾
㻞㻠㻌㼂㻰㻯㻌
㻜㻚㻟㻌㻭
㻶㻞㻜㻟
㻶㻟㻜㻝
㻶㻟㻜㻞
㻶㻟 㻶㻠
㻺㻻㻚㻝 㻺㻻㻚㻞
㼂㻴㻲
㻶㻡 㻶㻢 㻶㻣
㻱㼄㼀㻌㻭㻸㻭㻾㻹
㻰㼁㻭㻸㻌
㻲㼁㻺㻯㼀㻵㻻㻺 㻲㼁㼀㼁㻾㻱㻌
㼁㻿㻱
㻝
㻞
㻟
㻝
㻞
㻟
㼀㻾㻙㻭
㼀㻾㻙㻮
㻲㻳
㻺㻻㻚㻝 㻺㻻㻚㻞
㻶㻤 㻶㻥
㻝
㻞
㻟
㻠
㻡
㻢
㻻㼁㼀㻙㻴
㻻㼁㼀㻙㻯
㻵㻺㻙㻴
㻵㻺㻙㻯
㻯㼀㻵㻙㻯
㻲㻳
㻶㻝㻜
㻝
㻞
㻟
㻝
㻞
㻟
㻭㻸㻹㻙㻴
㻭㻸㻹㻙㻯
㻲㻳
㻺㻻㻚㻝 㻺㻻㻚㻞
㻔㻵㻯㻙㻟㻜㻟㻕
㻵㻺㻹㻭㻾㻿㻭㼀㻙㻯 㻺㻭㼂㼀㻱㼄
㻲㻿㻙㼤㼤㻣㻡㻛㻣㻜 㻲㻿㻙㼤㼤㻣㻜
㻲㻿㻙㼤㼤㻣㻜
㻰㼁㻭㻸㻌㻲㻿㻙㼤㼤㻣㻜
㻰㻱㻮㼁㻳
㻹㻲㻛㻴㻲
㻲㻿㻙㼤㼤㻣㻡 㻲㻿㻙㼤㼤㻣㻜
㻲㻿㻙㼤㼤㻣㻡
㻰㻿㼀㻮㼆 㻾㻯㼂㻮㼆
㻹㻲㻛㻴㻲
㻵㻯㻙㻟㻡㻜
㻰㼁㻭㻸
㻟
㻞
㻝
㻶㻝㻜㻝
㻝
㻻㻺
㻱㻺㻭㻮㻸㻱
㻟㻙㻠
㻞
㻺㼛㻚㻞
㻻㻲㻲
㻰㻵㻿㻭㻮㻸㻱 㻺㼛㻚㻝
㻟
㻞
㻝
㻶㻝㻜㻞
㻿㻝㻜㻞
㻝㻌㻌㻞㻌㻌㻟 㻝㻌㻌㻞㻌㻌㻟

9
2. OPERATION
2.1 Controls and Indicators
2.2 How to Set the Unit to Stand-by
1. Supply power from a power source which is backed-up by radio battery to turn on the IC-350.
All buttons in the IC-350 illuminate. Run the IC-350 while underway. A DISTRESS button does
not illuminate if the equipment name shown above the button is not connected.
If a DISTRESS button does not illuminate when the equipment is connected, check the DIP
switch setting or the lamp inside the button. See page 6.
2. Push the DIMMER button to adjust the illumination for the buttons.
There are seven illumination settings. Pressing the button repeatedly increases the illumina-
tion to maximum, then reduces the illumination to minimum (off). When the equipment is re-
started, the illumination starts with the previous setting.
Note: At minimum setting, the illumination for the distress buttons is not turned off.
ALARM UNIT IC-350
MUTE TEST
ALARM
DISTRESS ALERT RECEIVED
DISTRESS DISTRESS DISTRESS DISTRESS DISTRESS
No.2 VHF MF/HF No.1 INMARSAT NAVTEXNo.2 INMARSAT
MF/HF
PRESS 4 SEC FOR DISTRESS TRANSMISSION
DIMMER
No.1 VHF
No.2 INMARSATNo.1 INMARSATNo.1 VHF No.2 VHF
TEST button
MUTE ALARM button
DIMMER button
DISTRESS ALERT RECEIVED
indicators
DISTRESS buttons (five)
VHF: VHF radiotelephone
MF/HF: SSB radiotelephone
INMARSAT: Inmarsat-C Mobile Earth Station
NAVTEX: Navtex Receiver

2. OPERATION
10
2.3 When You Receive a Distress Signal
When you receive a distress signal, the related DISTRESS indicator flashes and the two-tone
alarm sounds. The volume of the alarm gets louder after five seconds.
To stop the audio alarm, push the MUTE ALARM button. The related DISTRESS indicator then
illuminates. The indicator turns off when the distress signal is stopped.
2.4 How to Send a Distress Signal
If YOUR ship is in distress, send a distress signal and do distress communications with a coast
station by radiocommunications. The IC-350 has five distress buttons. Use the No.1 VHF button
(leftmost DISTRESS button) to send a distress signal in normal use.
To send a distress signal, open the cover of the correct DISTRESS button and push the button
more than four seconds. In the first three seconds, the button flashes and the speaker releases
three beeps. The button then illuminates and the distress signal is sent. Do distress communica-
tions with a coast station by the same communications equipment used to send the distress sig-
nal.
If you release a DISTRESS button within three seconds after you pressed the button, the distress
signal is not sent. If you accidentally sent a distress signal, contact a coast station to report acci-
dental distress transmission. Contact the coast station by the same communications equipment
used to send the distress signal.
If a DISTRESS button does not flash when the button is pushed more than four seconds, the re-
lated communications equipment is turned off. If a DISTRESS button does not illuminate, related
communications equipment is not connected, and the distress signal is not sent.
If you accidentally sent the distress signal with the MF/HF DISTRESS button and powered off the
SSB radiotelephone after realizing the mis-transmission, the lamp in the DISTRESS button con-
tinues to illuminate. If this happens, long-push the MUTE ALARM button to restore normal oper-
ation.
Note: If you accidentally sent the distress signal, refer to the operator’s manual of the radiocom-
munications equipment for the procedure to cancel the distress signal.
ALARM UNIT IC-350
MUTE TEST
ALARM
DISTRESS ALERT RECEIVED
DISTRESS DISTRESS DISTRESS DISTRESS DISTRESS
No.2 VHF MF/HF No.1 INMARSAT NAVTEXNo.2 INMARSAT
MF/HF
PRESS 4 SEC FOR DISTRESS TRANSMISSION
DIMMER
No.1 VHF
No.2 INMARSATNo.1 INMARSATNo.1 VHF No.2 VHF
DISTRESS buttons (five)
No. 1 VHF button

2. OPERATION
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2.5 How to Operate the Dual Alarm Unit
You can operate No.2 alarm unit from remote location by dual alarm unit installation. When the
No.2 alarm unit is installed, do the operation as follows.
Purpose Operation
Turn the power on Both equipment can turn on first.
Resceive distress signal Two units resceive the signal simulteneously and lights the lamps and
buzzer alarm occurs on each equipment.
Send distress signal Press the DISTRESS button on one of the two alarm units. The earlier
pressing has effect to send a distress signal.
Dimmer control Independently.
Diagnose the system Independently.
External alarm output Both equipment ports are enabled.
Communication error If the communication is failed between No.2 and No.1 alarm unit, No.2
alarm unit alert is genarated. The communication error between No.1
alarm unit and radio transceivers is same as only one alarm unit instal-
lation. The alarm buzzer can be stopped with short press of mute alarm
buttom from No.2 alarm unit.

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3. MAINTENANCE
3.1 Maintenance
Check the points shown below once a month to help keep the equipment in good condition.
3.2 How to Clean the Equipment
Remove dust from the equipment with a soft and dry cloth. To remove dirt, use a moist cloth. Do
not use chemical cleaners as those types of cleaners can remove paint and markings.
Item Check point
Cables Check cables for damage.
Screws on chassis Check that screws are correctly fastened.
Ground Check for corrosion.
Voltage Check that the voltage is within the rating of the equipment.
(The voltage at the power terminal is 20.4 - 31.6 VDC)
NOTICE
Do not apply paint, anti-corrosive
sealant or contact spray to coating
or plastic parts of the equipment.
Those items contain organic solvents
that can damage coating and plastic
parts, especially plastic connectors.