User`s guide
vector
ZCB
Single
Board Computer
Many
peripherals
hold
either
or
both
lines
4
and
20
at
+12
VOC.
This
allows
an
alternate
method
of
providing
the
peripheral
with
+12
VDC
on
lines
5,
6,
and/or
8.
Simply rrake
the
appropriate
connection{s)
at
the
back
of
the
peripheral.
This
can
be
done
by
soldering
jumpers
within
the
DB-25
connector
or
external
to
it.
For
example,
to
provide
+12
VDC
on
lines
5 and
6,
you
can
connect
pin
4
to
5,
and
pin
6
to
20.
This
eliminates
the
need
for
the
extra
wires
in
your
external
cable,
though
it
is
a
less
elegant
solution.
The
following
describes
the
external
cabling
required
by
three
commonly
used
peripherals.
In
each
case,
we
are
referring
to
the
serial
interface
version
of
the
peripheral.
In
each
case,
do
not
forget
to
set
the
serial
port
on
the
ZCB
board
to
the
same
baud
rate
that
your
are
setting
the
printer.
(I)
Hazeltine
1400 Video
Display
Terminal
or
equivalent:
Use
a
25-wire
ribbon
cable.
Alternately,
create
a
3-wire
cable
connecting
lines
2,
3,
and 7
straight
through.
Ignore
the
instruction
in
the
Hazeltine
1400
Video
Display
Terminal
Reference
Manual
(May
1978)
in
Section
5.5
which
direct
you
to
cross
lines
2
and
3
if
connecting
directly
to
a
canputer.
(That
instruction
assumes you
are
connecting
to
a
canputer
dlannel
configured
as
Data
Termirial.
Equipnent.)
Also
ignore
the
instruction
to
connect
line
1
and
ignore
the
absence
of
an
instruction
to
connect
line
7.
other
Hazeltine
terminals
are
usually
connected
in
the
same way.
(2)
Diablo
1610
or
1620
printers,
NOC
Spinwriter
with
Diablo
protocol,
QuIne
Sprint
5,
or
DataProducts
letter
quality
printer
with
Diablo
protocol:
Use a
25-wire
ribbon
cable.
Alternately,
you
can
create
a
6-wire
cable
connecting
lines
2,
3,
5,
6,
7,
and
8
straight
through.
However,
if
you
are
not
using
the
ASCII
acknowledgement
signals
sent
by
these
printers
and
you
are
not
using
a
keyboard
built
into
the
printer,
you
do
not
have
to
connect
lines
2 and
5.
Since
nost
Vector
Graphic
software
makes use
of
the
acknowledgement
signals
(emulating
the
Diablo
protocol),
you
should
connect
these
two
lines
when
using
a
Vector
Graphic
computer.
with
at
least
the
Qume,
yoo
can
use
a
3-wire
cable
connecting
only
lines
2,
3,
and
7
if
you
connect
pins
5,
6,
and
8
to
pin
20
at
the
back
of
the
printer.
Note
that
same
models
of
these
printers
have
female
sockets
in
their
rear,
in
whidl
case
yoo
will
have
to
conf
igure
a
cable
with
male
connectors
at
ooth
ends.
'
( 3)
TI
810
Receive-Cnly
Printer
Rev.
l-B
6/11/80
2-13