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Keyboard Indicator Lamps
‘Standby’
Steady light indicates that the terminal is
ready.
Flashing light indicates that the printer is off
or out-of-paper or the modem is busy/
inhibited. Telex mode must be selected in the
frequency display of the CU.
‘Tx’
Steady light indicates that a radiotelex
transmission is in progress.
Flashing indicates transmission of control
characters, phasing, rephasing (‘Called’
diode flashes as well) or repetitions.
‘Called’
Steady light indicates that a radiotelex call
has been detected and reception is in
progress.
Flashing indicates rephasing (‘Tx’ diode
flashes as well).
Keyboard Function Keys
Select CH (F1):
Sets the frequencies of the transceiver in
accord with the selection of ITU coast station
or ITU intership channel and the entry of ITU
channel number.
Call FEC (F2):
Initiates an FEC transmission.
Responds to the printer with a choice of
broadcast or selective FEC. Selecting
selective FEC requires entry of call code,
before the transmission begins.
Call ARQ (F3):
Initiates an ARQ call. Responds by printing
‘ARQ call code?’, expecting the call code of
the station to be called to be typed. Upon
carriage return (¬ Enter), the ARQ transmis-
sion begins.
Edit Mesg (F4):
Edits a message to be transmitted later.
Send Mesg (F5):
Transmits (prints in Standby) the edited
message.
WRU (F6):
Requests the other station to transmit its
answer-back code.
DE (F7):
Transmits own answer-back code, see
Modem Set-up also.
Over (F8):
Changes the direction of an ARQ connection.
Break (F9):
Terminates a connection.
Responds by printing ‘Breaking connection’.
If pressed during transmission of an edited
message this is terminated. Press once more
to terminate the connection.
On/Off (F10):
Switches the GMDSS telex On/Off. The
‘Standby’ keyboard indicator lamp gives out
steady light when the switch on process is
finished. Call codes and abbreviated ID are
printed.
2174.5 kHz (Ctrl+F1)
Selects the distress frequency 2174.5 kHz.
4177.5 kHz (Ctrl+F2)
Selects the distress frequency 4177.5 kHz.
6268 kHz (Ctrl+F3)
Selects the distress frequency 6268.0 kHz.
8376.5 kHz (Ctrl+F4)
Selects the distress frequency 8376.5 kHz.
12520 kHz (Ctrl+F5)
Selects the distress frequency 12520.0 kHz.
16695 kHz (Ctrl+F6)
Selects the distress frequency 16695.0 kHz.
Bell (Ctrl+F7)
Transmits Bell character.
Содержание HF DSC
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