Fastnet FMD55P Owner's manual

Brand: Fastnet

Model: FMD55P

Category: Measuring, testing & control

Type: Owner's manual

Operator Manual

GMDSS Marine Radio Decoder

FMD55P

FREQU MODE FILTER ATT

123,EXT

DECODE DISPLAY PRINT 2182

456F1

READ WRITE RECALL STORE

78 9F2FREQU

< NO LOCK YES > STDBY TUNE

CLEAR 0ENTER F3

GMDSS MARINE RADIO DECODER FMD 55

OFF

ATT.

EXIT

ENTER UP

SETUP

DOWN

STORE

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CAUTION!

When installing the system for the first time, or if the unit has not been

operating for two to three months, the data stored in memory may

be lost due to self-discharge of the integrated rechargeable back-

up battery.

The FMD55 will signal data loss acoustically as follows:

Beep: Short - Short - Long - Long - Short

To correct the problem please proceed as follows:

Press the key to activate the set-up menu

STDB

SETUP

Press 2. <Set-up_2>

Press 1 < Time / Date>

Enter correct date and time. In case the values displayed were

correct, then enter a different value first before reverting to the

correct values.

Press key to return to Stand By mode.

ATT

EXIT

The acoustic alarm should now stop and the FMD55 is returned to

normal operating status.

After loss of power e.g. switching off, it is possible that the alarm

may sound. Switch off for 5 seconds, if still beeping, press <EXIT>.

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CONTENTS

1. Introduction 6

1.1. Short description of the functions 6

1.2. Operation 7

1.3. Keypad functions 7

2. Receiver (Operation) 10

2.1. Entering frequencies 11

2.2. Selecting reception mode 11

2.3. Adjusting filter 12

2.4. Reception of field strength 12

2.5. Storing receiver parameters 13

2.6. Recalling stored parameters 13

3. Decoding of Messages 14

3.1. Selecting mode and decoding types 16

3.2. Decoding MORSE code signals 18

3.3. Decoding RTTY signals 18

3.4. Decoding SITOR signals 18

3.5. Weather chart reception 19

3.6. Storing receiver and decoder parameters 21

3.7. Recalling stored parameters 21

3.8. Message storage 22

4. Automatic Reception and Decoding 23

4.1. Programming the timer 23

4.2. Interrupting and resetting timer 24

4.3. Reading stored messages 25

4.4. Printing out stored messages 25

4.5. RS232 interface output 26

5. NAVTEX Reception and Decoding 27

5.1. Selection of frequency 27

5.2. Selection of filter for NAVTEX reception 28

5.3. Selection of transmitting station 28

5.4. Selecting type of message 29

5.5. Printer function 30

5.6. Suppressing repeated messages 30

5.7. Alarm by A, B and D-type messages 30

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5.8. Printing out NAVTEX parameter status 31

5.9. Returning to basic Standby mode 31

5.10 Displaying and dealing with errors 31

5.11. Termination by high error rate 31

5.12. List of NAVTEX transmission stations 32

6. Barograph and storm alarm 35

6.1. Description 35

6.2. Calibrating barograph 35

6.3. Activate storm alarm 36

7. NMEA Printer and Navigation Log 37

7.1. Printing out NMEA data 37

7.2. Activating log 38

8. System SETUP 41

8.1. Setting time and date 41

8.2. Setting of owner’s and vessel’s name 41

8.3. Switching on and setting timer 42

8.3.1 Switching timer on and off. 42

8.3.2 Automatic return to Standby mode 42

8.3.3 Controlling the display lighting 43

8.4. Printing out system data 43

8.5. Deletion of Memory Store and RESET 44

9. Installation 45

9.1. Delivery contents 45

9.2. Installation of unit 45

Desktop, ceiling and wall installation 47

9.3. Diagram of unit – reverse side 48

9.4. Power supply connection 49

9.5. Record out – tape deck, PC 50

9.6. Connecting external loudspeaker 50

9.7. Antenna connection and earthing 51

9.8. Connecting an active antenna 52

9.9. Installation suggestion back-stay antenna 53

9.10. Installation suggestion active antenna MD-AA 54

9.11. Installation suggestion active antenna R+R 55

9.12. Printer paper change 56

9.13 Connection for external printer 57

9.14 Connection for RS232 interface 57

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9.15 Remote control output (optional) 58

9.16. Adjusting contrast of LCD display 58

10. Accessories 59

10.1. 24V DC/DC converter 59

10.2. DC936-12 Converter for DC 9V – 36V to 12V DC 60

10.3. Installation of M5X-DC converter 61

10.4. MD-AA active antenna for FMD55, 50, 56 62

10.5. MLB long-wire balun transformer for back-stay 63

10.6. F6A – suppression filter 64

10.7. Connection cable for NMEA interface 65

11. Technical Data 66

11.1. General 66

11.2. Receiver general 66

11.3. Receiver features 67

11.4. Micro controller – signal processor 68

11.5. LCD display 68

11.6. Thermal printer 68

11.7 Barograph 69

11.8. Interfaces (ext. Printer, RS232, NMEA) 69

11.9. Approvals 71

12. Information (Stations, Reception Conditions)

12.1. Chart W3 – Atlantic forecast areas

12.2. W4 – British Isles forecast areas

12.3. W5 – Baltic forecast areas

12.4. W6 – West Europe forecast areas

12.5. W8 – Denmark forecast areas

12.6. W12 – France forecast areas

12.7. W18 – East Mediterranean forecast areas

12.8. W19 – Mediterranean fleet forecast areas

12.9. Explanation of wind-forces

12.11. Short-wave coverage conditions 71

12.12. Antenna reception on vessels

12.13. Morse code table 73

13. Examples 75

13.1. Status information – timer parameters - Baltic 75

13.2. Status information – Mediterranean 76

13.3. Print out NAVTEX and MSI 77

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13.4. Print out weather report 78

13.5. Print out weather chart 79

13.6. Print out navigation log 80

13.7. Print out NAVTEX status information 80

14. Appendix 81

14.1. Service and maintenance 81

14.2. Service depots 81

14.3. Warranties

14.4. Software update 82

14.5 Order form for update 83

14.6. Error alarm 84

14.6.1.. “PRINTER ERROR” alarm 84

14.6.2.. Further acoustic error alarms 85

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1. Introduction

1.1. Short Description of Functions

The FMD55 possesses the following functions:

a) receiver

a highly reliable digitally tuned marine receiver with the following

features:

xfrequency range : 30kHz to 30MHz

xreceiving modes : AM, USB, FSK(LSB), CW.

xMemory storage : 30 frequencies and modes

b) NAVTEX receiver and decoder

xFrequencies : 490kHz, 518kHz, 4209.5kHz

c) Decoder

by means of a highly sophisticated signal processor and

microcomputer, the following codes are automatically deciphered:

xMorse code : 40 to 100 bpm

xRTTY : 50, 75, 100 Bd.

xSITOR-FEC : 100 Bd.

d) Weather chart receiver

xReception, decoding and printing out weather chart

transmissions according to IOC288 and 576CCIR

x-RPM : 60, 90, 120, 240 and auto

e) Barograph and storm alarm

The actual atmospheric pressure is continually measured and

displayed. The display shows in stand-by mode a graphic of the

previous 24 hrs. By means of data processing, it is possible to

evaluate a local storm warning.

f) NMEA printer and position log

Printing of data via the NMEA interface. In combination with a

GPS, a navigation log can be stored and printed.

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1.2. Operation

With its integrated high-contrast, back-lit display and an easy to use

keypad, the FMD55 can be operated simply with its user-friendly

dialogue. The printing out of system information and decoded

messages is carried out by an integrated or external thermal printer

using an 80mm wide thermal paper roll.

1.3. Keypad Functions

- select frequency input mode

- input numeral – 1 -

- select reception mode USB, AM, CW, FSK

- input numeral – 2 -

FREQU

- select filter band (only in certain modes)

- input numeral – 3 -

- select/deselect 20db attenuation

- return to higher level menu

MODE

FILTER

- select decoding mode, rotating from USB, AM,

CW, FSK and back to USB.

- input numeral – 4 -

-select display decoded message

-deselect printer

- input numeral – 5 -

- select printing of decoded message

- select and activate printer

- input numeral – 6 -

ATT

EXIT

DECODE

DISPLAY

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- select emergency frequency 2182 kHz

- select frequency input mode

-select

reading of stored messages - input

nu l – 7 -

- select storing of received

messages - input numeral – 8 -

-select

recall a stored frequency - input numeral – 9 -

- confirm stored frequency

- reserved function

-answer

NO in dialogue - move cursor left

- clear current input

- reserved function

- input numeral – 0 -

-answer

YES in dialogue - move cursor right

- confirm data input

mera

2182

ITE

RECALL

ENTER

CLEAR

LOCK

YES >

STORE

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-returntobasicstandbymode

-activatesSETUPmenu

-finetuning(+)

-movecursorup

-finetuning(-)

-movecursordown

- turn to switch unit ON or OFF

- turn to control the volume

STDB

SETUP

TUN

OFF

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1. Receiver (Operation

Switching on for the first time:

Control that the unit is properly

connected. Switch on by turning the

knob clockwise.

The display will now show the

barograph graphic, date, the time in

UTC and NAVTEX STBY on.

OFF

The unit is now functioning as a NAVTEX decoder on the

518kHz frequency. All incoming messages will be printed

out and, an alarm will sound by type A, B and D

messages. Changes to the NAVTEX menu can be made

as in chapter 5.

ATTENTION !

Frequencies for weather and nautical warnings can be

found in official manuals such as

The Admiralty List of Radio Signals volume 3.

Please note that the publishers and the distributors of

these manuals cannot be held responsible for the

correctness of the frequencies and transmission times.

One must take into account that there is a possibility

that the printed facts are incorrect. Wherever the

contents of different publications contradict, the

master’s decision must be to withhold from

unfavourable statements.

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2.1. Entering Frequencies

xTo activate the receiver press the F1<2182> key

(should no other input be made, the receiver is tuned

to the international emergency frequency 2182 kHz).

xPress the <FREQ> key

xEnter the frequency in kHz with the numeral keys (correct errors

with <CLEAR> key).

xControl that the input is correct and <ENTER>.

xFor fine-tuning of the frequency and input of decimal point, use

the cursors <UP> and <DOWN>.

The frequency entered will now be displayed.

2.2. Selecting Reception Mode

The receiver is provided with the following modes:

xAM for the reception of amplitude modulated radio stations

(e.g. BBC 4, Valentia, Athens etc.).

xCW for the reception of A1 signals ( Morse code from IAR,

Roma etc.).

xFSK (frequency shifting key) for RTTY (teletype) and SITOR-

NEC transmissions.

xUSB (upper side band) for the reception of single side band

(SSB) modulated signals.

See also chapter 3 – Page 3-1

For the reception of LSB (lower side band) use the FSK

mode.

While in Standby mode, or before the frequency input,

the basic mode is USB.

By pressing the <MODE> key the mode rotates (toggles)

from USB to AM then CW and finally FSK before returning

to USB.

The display will show the selected mode.

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2.3. Adjusting the Filter

The receiver has several filter band widths to optimise

the best possible reception.

The filter band widths are:

10 kHz, 7 kHz, 4 kHz, 2.2 kHz and 500 Hz

Permitted are only those band widths, which co-

operate together with the according modes,

automatically pre-selected in the decoding mode.

Repeated pressing of the <FILTER> key display the

following filter band widths for selection:

for AM : 4, 7 and 10 kHz

basic setting: 7 kHz

for CW : 2.2 kHz and 500 Hz

basic setting: 2.2 kHz

for FSK : 2.2 kHz and 500 Hz

basic setting: 2.2 kHz

The basic setting for USB is 2.2 kHz and cannot be

adjusted. Other filter band widths for SSB are unsuitable.

2.4. Reception of Field Strength

The field strength is displayed as:

>>>__I>>>__

The first five arrows from the left depict the automatic

adjustment control for the signal processor. For

reasonable reception, there should be two to three

arrows. The arrows appearing to the right of the

vertical line depict the field strength reception.

Whether four or five arrows are displayed,

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a good decoding quality is guaranteed. Interference

signals can also lead to a high field strength in display,

however the decoding can be strongly influenced by this

disturbance.

2.5. Storing Receiver Parameters

The FMD55 is equipped with 30 memory stores, so called

channels, in which a station frequency can be stored for

later retrieval. Retrieval is possible either by using the

<RECALL> key or in the timer mode.

The following parameters can be stored:

xfrequency in 10 Hz steps

xreceiving mode (AM, CW, FSK, USB)

xfilter adjustment (500 Hz, 2.2, 4, 7, 10 kHz)

Having checked that all the above parameters for the

selected station have been correctly entered then press

the <STORE> key. Now allot a free channel number from

01 to 30 and <ENTER>. The display will now show the

parameters stored on this memory store and with the

selected slot i.e. CHxx.

By pressing the key <YES> you can store the currently

entered parameters and/or overwrite previous entries

stored on this channel

2.6. Recalling Stored Parameters

To retrieve stored receiver parameters press <RECALL>.

e.g. using the numeral keys, enter the desired channel

number (e.g. 01 for the first entry), and press the <ENTRY>

key. The contents of storage will be automatically

transferred to the receiver.

The storage (channel) numbers and the parameters can

also be printed if desired.

Enter SETUP / Menu 2, place cursor on <7 INFO> ( see

chapter 8.1.)

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3. Decoding of Messages

The FMD can receive, decode and reproduce messages in

legible characters, when transmitted in Morse, RTTY and SITOR-

NEC codes. Apart from these codes there are many other

code types used in radio communication which are ciphered.

These types of messages are not for the general public and

can therefore not be decoded by the FMD55.

Weather, SAR and navigational warnings for shipping are

transmitted in codes, which the FMD55 can decipher.

The reception signal (LF) is fed to the signal processor where the

usable signal tone is filtered out and converted into digital

information.

The mode of the type of code transmitted by a station, can be

found in corresponding maritime radio manuals. Various

abbreviations are used:

xfor MORSE : CW, A1, A1A, telegraphy

xfor RTTY : F1B, radio teletype,

xfor SITOR : FEC, ARQ, F1B

Before a signal can be decoded, it must be reasonably free of

interference, (i.e. with the least possible noise ratio, no clicking

or crackling, no other disturbing stations in the receiving range).

In the top two lines of the LCD display, a signal spectrum is

depicted to assist in the adjustment.

Morse signals consist of only one tone. By reception of an

undisturbed MORSE signal, the following picture appears on the

display

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RTTY and SITOR-FEC signals consist of two tones, which

alternate uninterruptedly in the rhythm of the information

The two tones can be so close together that the depiction

in the display merges. This gives the following picture:

An interference free reception of a station is not always

possible. This is why disturbing signals as well as the required

signals are visible on the display.

* The basic FAX set-up menu appears as follows:

PRINT: NORMAL (BLACK on a WHITE background)

SYNC: +0 (picture will be printed vertically)

RPM: 120 (95% transmissions are at 120rpm)

LEVEL: 1500 (level value for black/white)

STATUS: WAIT (adjusts itself automatically to SYNC on

receiving the start impulse from the

station and through synchronisation

signaltoPRINT).

In all decoding modes, in the top left and right hand

corners of the display header, there are numbers visible.

These are the utility frequencies of the signal processor, as it

is active even in the stand-by mode for decoding of

NAVTEX signals. The number on the left is the lower

frequency and right higher. In the MORSE and FAX modes,

both values are equal. Morse uses only one tone signals and

FAX uses the white picture level value. In RTTY and SITOR

(NAVTEX), two signal tones are displayed. The distance

between corresponds to the frequency shift of the station.

FSK

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From the number displayed, the frequency can be calculated

as follows:

Frequency = 735 + 7.5 x n(Hz).N = number displayed

The CF of 1500Hz should correspond to the channel number

102. This means that during MORSE decoding, the number

appearing should be between 85 to 120. Should the number

differ greatly, then it is possible that the frequency is not

properly tuned. The white level for FAX in the SW range should

lie between 40 and 60. The two frequencies in RTTY and SITOR

should be roughly symmetrical around 102. Likewise in NAVTEX

they should be symmetrical around 102 but with an additional

distance of about 20 to 26.

3.1. Selecting Mode and Decoding Types

In most manuals, the station mode is depicted as A1A, F1B

etc. The following table is an overlook of the practised

abbreviations for transmission modes in marine radio.

The settings matching for the receiver and decoder can also

be taken from the table.

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Message Transmission Types

Transmission receiver decoder

Mode set up set up

A1A - Morse telegraphy

with non-damped carrier

e.g. Roma, IAR etc.

CW Morse

A2A - Morse telegraphy in

double side band

method

CW Morse

A3E - audio radio in double

side band e.g. BBC, 4. AM (audio)

F1B - FM telex signal from

Pinneberg FSK RTTY

F1B - FM telex signal specially

for NAVTEX FSK SITOR-NEC

F1B - FM telex (MSI frequencies

e.g. Portishead: 4211 kHz

(402)

FSK SITOR-FEC

F1C - FM tele-facsimile from

Bracknell, Pinneberg etc. FSK FAX

F3E - VHF Audio radio from 88

to 108 MHz * *

H3E - AM audio radio, SSB with

carrier e.g. Murmansk USB (audio)

J3E - SSB audio radio USB (audio)

R3R - as H3E however with

reduced carrier e.g.

Niton

USB (audio)

* - cannot be set by FMD50/55

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3.2. Decoding Morse Code Signals

Having chosen a station broadcasting in Morse code,

enter the frequency as in Ch. 2.1. Select the CW mode to

receive audible signal, (pitch of tone can be fine tuned

with keys <UP> and <DOWN>). Press key <DECODE>. The

signal processor will now analyse the Morse signal and

convert it into a digital signal. The bottom line of the

display will now show CARRIER then SIGNAL and. MORSE,

After a short period the message will appear in legible

characters in the first line of the display. The number in the

top corner is the speed of characters per minute.

By pressing <PRINT> the message can be printed out and

“P” appears on the display. Should the message be stored

for later display and/ or printing, press <WRITE>.and “W”

appears in the display and <ENTER>.

Using the <DISPLAY> key you can interrupt printing as well

as storing.

3.3. Decoding RTTY Signals

Using the same procedure as in MORSE decoding, enter

the frequency chosen and select the mode <FSK>. Press

the <DECODE> key until RTTY appears in display. After a

short period, the signal processor will analyse and the

decoded message will appear on the display along with

CARRIER then SIGNAL. In the case of RTTY the speed of

transmission is shown in Baud e.g. 58 Bd.

Printing and storing of messages is analogue to that of

MORSE.

3.4. Decoding SITOR-FEC Signals

Decoding of SITOR signals is analogue to RTTY via <FSK>

mode. The safety of the transmission of SITOR signals is far

superior to that of RTTY and NAVTEX is also transmitted in

SITOR.

Printing and storing of messages, as by MORSE

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3.5 Weather Chart Reception

The FMD55 can receive and print out weather charts,

(facsimile transmissions in F1C) if they are transmitted

according to normal standards.

Before printing out a chart, make sure that that you have a

reasonably disturbance free reception. For your assistance,

apart of the LCD display is reserved to project the incoming

signal. The signal is visible within the 855 to 1920 Hz band.

Weather transmissions consist of a signal spectrum in shades

of white, grey and black. With a reasonably clear reception,

you should the following picture on the display:

As a rule it is seldom that you have a perfectly clear

reception, therefore interference will be visible on the

screen as well as the incoming signal. Adjust the receiver

that you hear the best possible reception of a chart signal.

To do this select the FSK mode. The signal can be found

somewhere in a frequency tone range of 1000 to 2000 Hz.

Press the <DECODE> key until FAX appears on the display. A

small menu will now appear on the display allowing you to

adapt the method of decoding to the signal.

-PRINT: NORMAL/ INVERS allocates correctly, the

transmitted signals into BLACK and WHITE

Basic set-up is NORMAL.

The integrated printer cannot pick out the grey values, but

this is unimportant as weather charts consist mainly of black

and white information.

FSK

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Fastnet FMD55P Owner's manual

Brand: Fastnet

Model: FMD55P

Category: Measuring, testing & control

Type: Owner's manual

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Fastnet FMD55P Owner's manual

Fastnet FMD55P Owner's manual

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