hazeltine 2000 Operating Manual page 12

duplex
operation.
Must
be used with
the
SHIFT
key.
d.
REC
V
Pushbutton/
Indicator
Lighted whenever
the
Model
2000
is
able
to
receive,
or
is
receiving,
characters
from
the
computer or from
the
op-
tional
tape cassette
unit.
Therefore
not
lighted
in
any
of
the
three
modes
which
prevent
receiving:
Local,
Print,
or
Transmit
(in
Batch
operation).
If
pressed
while
In
any
of
those
modes,
this button immediately terminates
the
mode
and thereby returns
the
Model
2000
to
the
Ready mode.
e.
PARITY
ERROR
Pushbutton/
Indicator
Illuminates
when
a
parity
error has occurred
in
a character,
or
characters, as
data
transferred
between computer and
display
unit.
Depressing
the
pushbutton
will
reset the parity
detection circuit and extinguish
the
light.
f.
PRINT
Indicator
Lighted
when
print
mode
is
initiated
by depressing
the
PRINT
key or by
the
computer.
g.
LOCAL
Pushbutton/Indicator
Lighted
whenever
the
keyboard
is
electrically
enabled
(unlocked).
Therefore
not lighted
in
any
of the three
modes
which
lock the
keyboard
to
prevent garbling
by
inadvertent
typing: Print,
Transmit
(in
Batch
operation),
or Receive
(while
a character
is
arriving).
When
pressed,
this button immediately switches
the
Model
2000
to the
Local
mode
from any
of the
other
modes.
h.
P RINT
Key
Initiates a
batch readout
of the
contents
of the
display
to
optional
equipment (serial-character hard copies or
tape
cassette
unit),
by
switching
the
Model
2000
from
the
Ready
mode
or
the
Local
mode
to
the
Print
mode.
Must be used
with
the
SHIFT
key.