Radio Shack TRS-80 Operation Manual page 12

© COPY
Key
If the starting point has
been
set
(see
CLEAR
key), the
PTC-64
will
print
one copy
of
the stored
information every time you
press the
COPY
key.
However,
if
the
text
exceeds
the buffer
size,
the
COPY
key
will
be
ignored.
For
printing multiple copies,
you
may
also
"stack" up
to
100
COPY
requests
by
pressing the
COPY
key
repeatedly.
This
means
that
you
may
wait
for
100 copies
to
print at
one
time. Pressing
the
COPY
key any
more
than the
allowed 100 times
will
be
ignored
until
at
least
one
duplicate
has been
printed.
If
you
press the
CLEAR
key,
printing will cease.
You may
start
over simply by
pressing the
COPY
key
again.
Note:
If
you
send
text
from
your computer while
extra copies are being
printed, that text
will also
be
printed.
Therefore, do not send any
data
to
the
PTC-64
until
all
copies have
been
printed.
©
PAUSE
Key
Pressing
this
key
will temporarily
interrupt
any
printing.
Pressing
this
key
a second time
will
resume
printing. If
you
press
PAUSE
before sending any
information
to the
PTC-64,
printing will not
start until
you
press
this
key
again.
There
are three other functions that
can be
activated
by
using the three keys on
the front
panel:
•
Controls
OFF When
you
press the
COPY
and
PAUSE
keys
together, the
PTC-64
Control Sequences
—
special operations
to
control printing functions (see section 4)
—
are
automatically disabled.
•
Controls
ON
When
you
press the
CLEAR
and
COPY
keys together, the
PTC-64
Control Sequences
are re-enabled.
(The
PTC-64
powers up
with the Control Sequences
enabled.)
Note: There
will
be a long beep
after Controls
ON/OFF
to indicate the
mode
change.
• SELF-TEST When
you
press the
CLEAR
and
PAUSE
keys
together, the Printer
Controller automatically performs
a
self-test,
and,
if
everything
is
working
properly,
prints the
message
shown
in the
next
section
under
Self-Test.
Figure
2.
PTC-64
(Rear View)
©
AC
Power
Jack
Connect
the
AC
adapter plug
into
this
Jack.
Use
only the adapter
supplied with
the Printer Controller (11
VAC
@
600ma).
©
Computer
Input Connector
Connect your
computer's
parallel interface cable
to
this
connector.
©
Printer
Output Connector You
will
need
to
connect an
additional cable (26-4401)
to this
connector
to
link the Printer Controller
to
your
printer.