21
Switching On
Press F10 and switch on the printer (The ‘Select’ printer indicator
must be on). Select telex mode in the Frequency Display of the
control unit. If the modem is used for DSC or is inhibited because the
transceiver is used for telephony, the Standby keyboard indicator
lamp is flashing to indicate that the terminal is not ready.
The ‘Standby’ keyboard indicator lamp shines steady light when
connection to the telex modem is established and the following text
appears on the printer (example):
5-digit call code: 12345
MMSI number: 123456789
Abbreviated ID: abcd
Channel Selection
Press F1. The printer responds by printing:
‘ITU Coast station / interShip channel (C/S)?:
After pressing ‘C’ or ‘S’ as desired the channel number is requested
and must be typed in. The validity of the channel number is checked.
If the channel number does not exist this is indicated.
If the channel number exists the corresponding frequency pair is
printed and the transceiver is set accordingly.
The radiotelex
distress and safety
frequencies may be selected by
simultaneously pressing ‘Ctrl’ and the appropriate function key F1 to
F6.
Transmitting a Message
Before calling, it must be ensured that the transmission will not
interfere with transmissions already in progress. Switch the loud-
speaker on and listen in on the selected channel.
Press
Call FEC
or
Call ARQ
as desired and enter the call code of the
station to be called. For transmission to two or more stations the
FEC mode should be used. For communication between two stations
the ARQ mode should be used.
Before any message can be sent, wait until the connection has been
established, or in the case of FEC until the opening phase sequence
has been transmitted. When the system is ready for message
transmission a “>” is printed and the Tx keyboard indicator shines
steady light.
After a successful ARQ connection has been established, answer-
back codes may be exchanged by pressing the
WRU
and
DE
keys. A
message may now be transmitted by pressing carriage return (¬
Enter) followed by the message to be transmitted, either typed in
directly from the keyboard, or recalled from the text memory by
pressing the
Send Message
key. Communication with coast stations
must be in accordance with the procedures specified by the particu-
lar coast station. Where the appropriate facilities are provided by the
coast station, traffic may be exchanged with the land telex network.
Having completed the transmission, an exchange of answer-back
codes should take place. The radio connection is terminated by
pressing the
Break
key.
Editing a Message
A text memory is used for storing a message for later transmission.
The message can be transmitted one or more times. The message is
printed out when the
Send Message
key is pressed.
A message can be entered into the text memory after pressing the
Edit Message
key in standby mode. Any previous contents of the
text memory are printed out then and may be supplemented,
corrected or deleted.
Editing keys:
Edit Mesg(F4)
Selects edit-mode and prints the contents of
the text memory.
Backspace
Deletes the last character keyed in if it has
not been printed.
Insert
followed by line number, selects a line.
The contents of the line, if any, are printed.
Text may be added or deleted.
Delete
Deletes the last word of the line
Deletes message (after confirmation) if
pressed after
Edit
(F4).
Line numbers (10, 20, etc.) are added automatically when typing the
message.
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