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CANCELLING A FALSE DISTRESS ALERT

1.Switch off transmitter immediately.

2.Switch equipment on and set to Channel 16.

3.Make broadcast to «All Stations» giving your vessel’s name, callsign and DSC number, and cancel the false distress alert.

Example message:

All Stations, All Stations, All Stations

This is NAME, CALLSIGN,

DSC NUMBER, POSITION.

Cancel my distress alert of

DATE, TIME, UTC.

=Master, NAME, CALLSIGN.

DSC NUMBER, DATE, TIME UTC.

Table of Contents

6. Other Settings

7. System Confirmation

8. Maintenance & Troubleshooting

9.Specifications

10.Menu List

Declaration of conformity to type

FOREWORD

Thank you for purchasing this VHF Radiotelephone FM-8500. We are confident you will discover why FURUNO has become synonymous with quality and reliability.

Dedicated in the design and manufacture of marine electronics equipment for half a century, FURUNO Electric Company has gained an unrivaled reputation as a world leader in the industry. This is the result of our technical excellence as well as our worldwide distribution and service network.

Please carefully read and follow the safety information and operating and maintenance instructions set forth in this manual before attempting to operate the equipment and conduct any maintenance. Your VHF Radiotelephone FM-8500 will perform to the utmost of its ability only if it is operated and maintained in accordance with the correct procedures.

Features

The FM-8500 is a highly advanced, semi-duplex, fully synthesized 25W VHF transceiver with DSC terminal, designed to satisfy the stringent requirements of marine communications. It complies with GMDSS carriage requirements for safety and general communications.

•Conforms to the following standards and regulations: IMO A. 694(17)

IMO A. 803(19) IMO A. 524(13)

IMO MSC 68(68), MSC/Circ.862 IEC-61097-3/7/8

IEC-60945 (3rd edition) IEC-61162-1

ETS 300 338, 301 033, 300 162 ITU-R M.493-9, M.541-8, M.689-2

•Automatic position and time input and update with connection of EPFS (Electronic Position-Fixing Equipment).

•Optional printer can automatically print out received messages and test results.

•Log stores 50 each of latest ordinary, distress and transmitted messages, in separate memory blocks.

•One-touch testing facility.

Program number

System Configuration

CH70 Antenna VHF Antenna

Printer

Figure 1 FM-8500 system configuration

1. VHF Radiotelephone

Operational Overview

The FM-8500 system consists of a main transceiver unit and two antennas. The transceiver unit contains a VHF transmitter, receiver, and channel 70 watch receiver module. The performance and operation are controlled on its front panel. The antenna may be of any type available from FURUNO or market and the recommended type is a vertically polarized non-directional type. The first antenna works for transmitting and receiving and the 2nd antenna for watch keeping.

Controls for VHF operation

Figure 1-1 FM-8500 transceiver unit

1.1 Controls, Indications

Controls

Indications

The display shows the following indications;

1.2 Telephone Operation

Turning the power on and off

To turn the power on, turn the VOLUME control clockwise until you hear a click. To turn the power off, turn the control fully counterclockwise until you hear the click.

Selecting channel modes

While pressing the channel selector, press the CH16 key to select the channel mode, International, USA (in the case of USA version), private (if authorized), or weather mode (USA version). The International version of FM-8500 has no such selection.

On the weather channel mode, a beep is emitted when the weather alert tone is received.

NOTE: Private channels are available only where permitted by the authorities.

Selecting channels

Rotate the CHANNEL selector clockwise (counterclockwise) until a desired channel is reached.

Adjusting volume

The VOLUME control adjusts the volume of the loudspeaker.

Adjusting squelch

The SQUELCH control adjusts the squelch threshold level. Adjust it so that white noise heard in the loudspeaker just fades out. Perform this operation when no traffic is being received. AUTO squelch automatically reduces white noise. Usually select «AUTO» position. Avoid turning the squelch too far clockwise: you may miss a long distance communication.

Note: To obtain correct scan watch/dual watch response, adjust the SQUELCH control precisely.

Every press of the SQUELCH control changes the function as follows:

Transmitting

Press the PTT (Press-to-talk) switch on the handset or microphone to talk, and release it to listen for the response.

Output power

•BEFORE transmitting, think about the subjects which have to be communicated and, if necessary, prepare written notes to avoid unecessary interruptions and ensure that no valuable time is wasted on a busy channel.

•Listen before commencing to transmit to make certain that the channel is not already in use.

Each press of the [HI/LOW] key selects HI or LOW output power. The transmitter power is automatically set for low on the following channels.

Turning the loudspeaker on/off

To turn the loudspeaker on/off, press the VOLUME control. The loudspeaker off mark appears when the speaker is off. The loudspeaker is automatically turned off when the telephone handset is used on semi-duplex channels.

Channel 16

Press the [CH16] key to select channel CH16, International Calling and Safety Channel.

This is an international calling and safety channel. The use is limited for distress, safety and calling. The transmission on CH16 (156.800 MHz) should be limited to within 1 minute except for distress calling.

Avoid calling on Channel 16 for purposes other than distress, urgency and very brief safety communications when another calling channel is available.

Dual watch

The dual watch allows you to keep watch on channel 16 and another channel. CH16 and another channel are watched at intervals of 0.15 seconds and one second, respectively.

To start DW, press the SQUELCH control once. When the receiver finds a signal on channel 16, it locks on CH16 and restarts dual watching after the signal on CH16 has gone. If another channel has traffic, it still continues dual watch. The speech is heard intermittently. If you are annoyed with the intermittence, turn off DW by pressing the PTT switch on the handset or pressing the SQUELCH control.

Scanning

The receiver scans all channels in the selected channel mode in ascending channel order, watching CH16 between channels as below:

To start scanning, press the SQUELCH control and SCAN is started. When the receiver finds a signal, scanning is stopped on that channel and starts dual watch on it and channel 16.

1 16 2 16 3 16 4…

16 88 16 87 16 86 16…

Time-out-timer (U.S.A. type only)

The FM-8500 is equipped with an automatic timing device that deactivates the transmitter and reverts the transceiver to the receive mode after an uninterrupted transmission period of 5 minutes.

Remarks on voice communications

Automatic acknowledge is automatically changed to manual acknowledge when voice communications begin. (The «auto» indication, however, remains on the screen.) This is done to prevent break in communications. Automatic acknowledge is automatically restored once voice communications are terminated.

Priority

The priority of the equipments is as follows.

DSC section of FM-8500 > Wing handset > Handset of FM-8500 > Remote Station RB-700

2. DSC Terminal

Operational Overview

2.1 DSC Messages

The contents of a DSC message change with format specifier (calling category).

1. Format: Calling type

2. Address: Station’s 9-digit ID number

IDs starting with “00” are coast stations, those starting with “0” are group IDs or another IDs are ship’s IDs.

3. Category: Communication priority

There are four communication priorities as below:

DIS: A vessel is in grave and imminent danger and requests immediate assistance.

URG: Announce important safety information or request medical assistance.

SAF: Transmitting a message containing an important navigational or an important meteorological warning.

ROU: For routine (individual) calling.

4. DSC: DSC channel

A DSC channel is different from the usual communication channel because it is not used for voice communication but rather DSC and acknowledging receipt of message.

5. Telecom1: Telecommand

The communication mode; simplex or semi-duplex.

6. Channel: Voice communication channel

To communicate with a coast station, a station sends its position data to the coast station and the coast station determines the channel to use. A station may only use CH16 (distress channel) in the event of distress.

7. Pos: Ship’s position

Position input by radionavigational equipment.

8. UTC: Universal Time Coordination

The equipment contains a clock. External time input from radionavigational equipment cannot be used.

9. ACK RQ (BQ):

Acknowledge request (RQ) or acknowledge reply (BQ).

2.2 Controls, LEDs

Controls

VHF RADIOTELEPHONE FM-8500

Transmits messages other than distress.

Silences the receive alarm.

Stops repetitive alerts.

Transmits the distress alert. Open cover on [DISTRESS] key and press the key 4 seconds continuously.

Figure 2-1 FM-8500 transceiver unit

The four LEDs surrounding the [DISTRESS] key light when the key is pressed, 4 seconds continuously.

•The upper two of the four LEDs surrounding the [ALARM STOP] key blink (and alarm sounds) when distress or urgent message is received. LEDs can be extinguished and alarm silenced by pressing the [ALARM STOP] key.

•The lower two LEDs (Green) blink (and alarm sounds) when message other than distress/urgent are received. Alarm is automatically silenced five seconds after message is received.

Figure 2-2 Keyboard

0 9 Enter numeric data.

2to page 2-8.) Note that distress alert cannot be automatically acknowledged by “auto acknowledge”.

TEST

PRINT

2.3 Basic Operation

Normal display

When the FM-8500 is turned on, the following display appears.

This display is known as the “normal display.”

[2] key pressed to get “auto” screen.

Should you get lost in operation you can return to the normal display by pressing the [CANCEL] key several times.

Selecting and registering items

The arrow keys ( [t] and [s] ) function to select items on the LCD.

After selecting item, press the [ENT] key to register it.

Press the [ENT] key.

When blinking question mark appears

Press the [ENT] or [SELECT] key depending on your desire.

•If change is necessary, press the [SELECT] key.

•If no change is necessary, press the [ENT] key.

Preparing and Transmitting Messages

There are two methods by which you can prepare and transmit messages, and they are shown below.

Preparing message for immediate transmission

Prepare message and then transmit it.

Normal display

Press the [ENT] key.

* VHF call message *

Format INDIVIDUAL

For how to prepare a message, refer to page 4-1.

After preparation, press the [CALL] key to transmit the message.

Preparing and storing message for later transmission

Prepare messages excluding distress message and save them to the memory. (Maximum 99 files) You may retrieve and transmit a memory-stored message as follows.

Normal display

Press the [SELECT] key.

Press the [7] key.

For how to prepare and store a message, refer to “4.5 Preparing and Saving Transmit Messages”.

After the normal display appears, press keys in the order shown below to transmit a message.

Press the [7] key. / (Enter file number.) / Press the [CALL] key.

Status of FM-8500 during DSC Call

When the distress alert is transmitted (by pressing the [DISTRESS] key), the output power of the FM-8500 is automatically set to maximum (25 W).

Key entry of VHF

The FM-8500’s keyboard accepts no key input while DSC message is transmitted. (Distress call: inoperative about 3 seconds, other calls: inoperative about 0.5 seconds.)

To unlock it manually, if necessary, press the [CANCEL] key.

The VHF section keyboard accepts no key input when the PTT switch is operated.

2.4 Auto Acknowledge

Auto acknowledge functions to automatically acknowledge individual calls. Press the [2] (AUTO ACK) key to automatically transmit the acknowledge back (ACK BQ) to the sending station when an individual call is received.

An individual message cannot be automatically acknowledged when it is received while the handset is off hook.

When auto acknowledge is disabled

•Automatic acknowledge is disabled when an Error Checking Code (ECC) appears at the end of a receive message.

•A distress alert is received.(A distress alert cannot be acknowledged automatically.)

Turning & AUTO ACK on/off

Each press of the[2] key enables/disables auto acknowledge function..

“auto” function

Provides automatic acknowledge of individual calls. Automatic acknowledge, however, is disabled when conducting voice communications.

“manual” function

Manual acknowledge of all calls. However, an all ship’s call is automatically acknowledged when no voice communications are taking place when the call is received. See page 4-12 for details.

If no numeric key is pressed, distress alert is automatically transmitted.

Counts down. If distress call is not acknowledged it is automatically retransmitted until acknowledged.

(Do nothing until own ship receives DIST ACK.)

(continued on next page)

3.2 Manual Entry of Ship’s Position and Time

Entering data manually

If automatic position input is lost for one minute the message «EPFS error» appears. In this case, enter position manually as below.

(Normal display)

Format: DISTRESS

To enter data manually from the Distress Alert message, press [ENT]

and select call type

Distress. Press the [SELECT] key followed by the [1] key.

Press [ENT], [ENT] [SELECT] in this order.

Note: If the manually entered position is not updated within four hours the buzzer sounds and the message «Warning: Update position!» appears on the screen. And if not updated within 23.5 hours the position entered is erased. Once automatic input of position is restored, cancel manually entered position as below.

Confirming Ship’s Position and Time

Press and hold down the [1] (POSITION) key, ship’s position and time are shown while the key is pressed.

Canceling manually entered data

To cancel the manually entered data, enter 9999 for the time and press the [ENT] key.

Note: Above procedure may also be used when you do not know your ship’s position. This data is input as NO INFORMATION in POS&TIME in the DISTRESS ALERT MESSAGE.

3.3 Receiving Distress Alert from Other Ship

In no case is a ship permitted to transmit a DSC distress relay call on receipt of a DSC distress alert on VHF channel 70.

Conditions necessary for relaying distress alert:

1When the station in distress is not itself in a position to transmit the distress message, or

2 When the master or person responsible for the vessel not in distress, or the person responsible for the coast station, considers that further help is necessary.

Procedure when in area A1

1.When the FM-8500 receives a distress alert from another vessel the upper two LEDs (Red) near the [ALARM STOP] key blink and the FM-8500 sounds the distress alarm.

2.Silence the alarm by pressing the [ALARM STOP] key.

3.Wait up to three minutes until the DIST ACK signal from a coast station is received. Be prepared to follow the instructions of the coast station.

4.If you do not receive the DIST ACK signal, follow the flow chart shown on the next page.

If further DSC alerts are received from the same source and the ship in distress is beyond doubt in the vicinity, a DSC acknowledgement may, after consulation with an RCC or Coast Station, be sent to terminate the call.

Note 1: An asterisk (*) in a received distress alert message indicates error or unknown at the location marked with the asterisk.

Note 2: Do not send DISK ACK in response to receipt of distress alert having a nature of distress of EPIRB emission.

Your Ship

About 20 to 30 miles (Sea area A1)

Coast station

Distress Alert

Transmission

Vessel in Distress