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F1
SPEED CHECK
F2
PHASING
F3
MODE RECALL
F4
FORWARD SEQUENCE
F4+F3
REVERSE SEQUENCE
The
length
of
blocks, the switching of the block
lengths, and the data length are
detected automatically. The status
line
show
the
short,
middle,
detection of block length switching
can
be
lost
in
interference on the communications
channel, in which case the key F2
should
be
pushed.
menu can be displayed with the MODE
RECALL key which also initiates a
new synchronization.
The SWED-ARQ utilizes 3 different
F1
SPEED CHECK
F2
PHASING
F3
MODE RECALL
F4
FORWARD SEQUENCE
F4+F3
REVERSE SEQUENCE
ARQ6-90
is
a
simplex
similar to SITOR-ARQ with traffic
blocking and acknowledgement on the
same frequency. The system uses 200
Baud as well as the Sitor alphabet
with
each
block
characters.
F1
SPEED CHECK
F2
PHASING
F3
MODE RECALL
F4
FORWARD SEQUENCE
F4+F3
REVERSE SEQUENCE
ARQ6-98
is
a
simplex
similar to SITOR-ARQ with traffic
blocking and acknowledgement on the
same frequency. The system uses 200
Baud as well as the Sitor alphabet
with
each
block
characters.
the
transmitted
block
lengths
or
long.
The
case
of
heavy
The
operating
ARQ
system
transmitting
ARQ
system
transmitting
Displays the baud rate
Re-synchronisation
Redisplay of the mode as well as re-
synchronization
go to next operating mode
go to previous operating mode
block
lengths.
corresponds principally to the mode
SITOR-ARQ. The system increases the
block
lengths
as
m i d d l e
communications
while
automatically
block
length
appears on the channel. To increase
the
information
of
a
good
middle
block
possible
to
information at a rate of 75 Bauds,
and with long block at a rate of
100 Bauds.
Measure Baud rate
Rephases
Retrieves the operating mode
go to next operating mode
go to previous operating mode
Pressing the F2 key causes signal
to be rephased, while pressing the
F3 key recalls the operating mode
ARQ6-90.
received
6
recognized.
Measure Baud rate
Rephases
Retrieves the operating mode
go to next operating mode
go to previous operating mode
Pressing the F2 key causes signal
to be rephased, while pressing the
F3 key recalls the operating mode
ARQ6-98. The polarity of the
received signal is automatically
6
recognized.
The
short
automatically
o r
l o n g
w h e n
channel
is
reducing
as
interference
transmission
quality
channel,
length
makes
transmit
and
The
polarity
signal
is
automatically
Page 26
block
to
t h e
good,
the
rate
the
it
receive
of
the
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