PRESETTING
THE MESSAGE REPEAT DELAY:
You
can
repeat
the
message
memories
simply
by striking
the white
message
key repeatedly
or
you
can
use the
delay
mode for
delayed
repeats
of
from
1 to 99 seconds.
To load the
delay figure
in
seconds,
type
CTRL-- (dash)
and
then
type
two numbers
representing
the
delay
desired (in seconds).
Type
the most
significant
number First (the TENS
digit).
If the number
is less
than 10
you
must
type
the
leading
zero.
Now when one of
the four
message
memories
are called
up,
it will
repeat
continuously
at the interval
preset
until aborted
by hitting
the
SHIFT
key
while the
delay
is
underway.
The
DVERFLDN
lamp lights
during
the
delay period
as a convenience.
DELETE
FUNCTION:
Vou can delete
the last WORD
typed, assuming
it hasn’t started
transmission, by
hitting
the
"DELETE"
key.
SHIFT/RESETl(WHlTE KEY) has
the same effect
if
you
prefer.
Each
time
you
hit the "DELETE"
key,
the last word (back to
a
"space"
will be deleted.
If
you
are
loading
the
message
memories,
or
setting
the time or the
serial;
the
"DELETE"
key
will delete one
CHARACTER
per depression.
ABORT MESSAGE
MEMDRV DR BUFFER TRANSMISSION:
Hit the
white reset
key
and
the
message memory
and buffer
will be
reset. The
message
memory
is saved but buffer contents
are lost.
SVSTEH RESET
would do the same
thing
but the mode would default
to CM.
HDLD TRANSMISSION:
Transmission
may
be
temporarily
halted
by typing
SHIFT/SPACE. This allows
the
receiving
station to
break for a
repeat
etc. You can use the
paddle
during
the hold if
you
like. The transmission
will be continued when
you
hit the "CTRL"
key.
This feature can be
extremely
useful
in traffic
handling.
The "HOLD" is effective
in all modes
using
the
sending
buffer.
SYSTEH RESET:
when
you
turn on
your KB—4900,
the circuits are
automatically
reset
and the
unit comes
up
in the Horse
keyboard
mode. The time and serial
registers plus
the
message
memories will have
garbage
in them
as their
contents
,by design,
are not affected
by
a reset. When
power goes
off,
their contents are of course lost.
Normally,
the
only
time
you
have to
operate
the
systee
reset
(except
For exit trom the code
practice
modes)
is,
if for some
reason,
such as a
power
transient
or severe r.f.
interference,
the
processor
goes
bananas. If this
happens,
the
keyboard may
be
locked,
or
sending
the
wrong
keys
or there
may
be
a
string
of unwanted
characters
transmitting.
In
any event,
you
will Feel
you
have lost
control
of
things.
If
this
happens, hitting
the SYSTEH
RESET
will
make
every-
thing
right again.
The time and serial
may
be scrambled
depending
how
the
processor program
self destructed
during
the crash. The
program
is
permanently
locked
in the EPROH so no
permanent change
will
occur.
(14)
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