NASA EASY NAVTEX Скачать руководство пользователя страница 7

TO SELECT THE STATIONS YOU WANT TO STORE.

Each Navtex station has an `ident`letter. To select the station you want 
to store follow the instruction below.

Press 

Stations

 and a list of international (518KHZ) and national 

(490KHZ) stations will be displayed.

Use the 

NEXT

 and 

PREVIOUS

 keys to move the cursor through the 

list. Use the 

FLIP

 key to change the highlighted character between 

UPPER and lower case. The Easy Navtex will store Messages where 
the station ident letter is in UPPER case and ignore stations when in 
lower case.

4

TO SELECT THE MESSAGES YOU WANT TO STORE.

Press MESSAGES then use the PREVIOUS and NEXT keys to scroll 
through the list of messages available. Use the FLIP key to flip between 
STORED and IGNORED for each message in the list.

MESSAGE FORMAT.

All messages start with a four character header. The first character in 
the header is the station identification letter. The second character 
identifies the message type and characters three and four the message 
number. After the header the word "national" or "international", written 
in lower case characters , indicates which channel the message was 
received. 

Then comes the body of the message followed by a number in 
parenthesis. This number is a measure of reception quality being the 
total number of errors received during the message. Most of these 
errors will not be apparent in the message as they will have been 
corrected by the Forward Error Correction system. The final character 
confirming a message has been properly terminated is a hash symbol. 
If a message is not correctly terminated an error message will be 
printed in lower case characters.

KEY FUNCTION SUMMARY.

OLDER Go to previous message.

NEWER Go to next message.

LATEST Go to last message received.

DOWN Scroll down a message.

Содержание EASY NAVTEX

Страница 1: ...CLIPPER EASY NAVTEX INSTALLATION AND USER INSTRUCTIONS NASA MARINE Ltd BOULTON ROAD STEVENAGE HERTS SG1 4QG ENGLAND 01438 354033 MARINE INSTRUMENTS DESIGNED AND MANUFACTURED IN ENGLAND RoHS 2002 95 EC ...

Страница 2: ......

Страница 3: ...PPER EASY NAVTEX EASY NAVTEX TRANSMISSIONS TO SET THE CLOCK TO SET THE OPERATING CHANNELS TO SET THE CONTRAST TO SELECT STATIONS YOU WANT TO STORE TO SELECT THE MESSAGES YOU WANT TO STORE MESSAGE FORMAT KEY FUNCTION SUMMARY NOTES QUESTIONS ANSWERS NAVTEX STATION LIST 1 1 2 2 2 3 3 3 4 4 4 4 5 6 7 ...

Страница 4: ... to the low frequency nature of the signal it is not necessary to mount the antenna at a great height However many types of electrical apparatus emit interference and it is important that the antenna is well clear of such interference Troublesome items are alternators ignition coils motors strip lights inverters etc Select a position as far from likely sources of interference as is practical and m...

Страница 5: ... the message memory 4 Press CHOICES to program the STATIONS and MESSAGES you want to record TO SET THE CLOCK Press SETUP then CLOCK Use the HOURS and MINUTES keys to set the time on the 24 hour UTC GMT clock Note if power is removed even for a brief period the clock will need to be reset TO SET THE OPERATING CHANNELS Press SETUP followed by CHANNELS then press NAT L to receive permanently on the n...

Страница 6: ... and the wire with the black strip to negative The unit is protected against reverse polarity Push the moulded antenna plug into its socket on the rear of the receiver 2 USING THE CLIPPER EASY NAVTEX When power is first connected your Clipper EASY NAVTEX displays the last message it has received Pressing any key will turn on the backlight which will stay on for four minutes after the last key pres...

Страница 7: ...es start with a four character header The first character in the header is the station identification letter The second character identifies the message type and characters three and four the message number After the header the word national or international written in lower case characters indicates which channel the message was received Then comes the body of the message followed by a number in ...

Страница 8: ... causing your navtex to malfunction a system reboot is available To re boot First switch off the supply then restore the supply and then press all four keys simultaneously The spectrum screen displays the frequency components of the received signal When no navtex signal is being received Which is for most of the time then the spectrum displays a bell shaped curve centred about the middle of the sc...

Страница 9: ...ecessary Set the navtex to receive all stations and all messages on the international channel Leave the navtex on overnight with all other equipment switched off and no connection with shore supply If your navtex then receives messages try switching other equipment back on to discover which device is causing the problem Q Why do I get poor results when in harbour A This is almost certainly caused ...

Страница 10: ...T 490 kHz Niton French language United Kingdom L 518 kHz Rogaland Norway M 518 kHz Jeløya Norway N 518 kHz Ørlandet Norway D 518 kHz Tórshavn Føroyar Denmark P 518 kHz Den Helder Netherlands R 518 kHz Sauðanes Iceland S 518 kHz Pinneberg Germany T 518 kHz Oostende Belgium U 518 kHz Tallinn Estonia V 518 kHz Oostende Belgium W 518 kHz Valentia Ireland X 518 kHz Grindavik Iceland H 518 kHz Stockholm...

Страница 11: ......

Страница 12: ... prudently and check its operation from time to time against other data Inspect the installation from time to time and seek advice if any part thereof is not fully seaworthy Nasa Marine Ltd warrants this instrument to be substantially free of defects in both materials and workmanship for a period of one year from the date of purchase Nasa Marine Ltd will at its discretion repair or replace any com...

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