Appendix
E
Options and Accessories
E.1
OPTIONAL
CHARACTER
SET
ROMS
Optional character set ROMs are available only
for
the Model
880
Printer (not the Model 880
DP)
and,
once installed, can be selected from the control
panel in the menu mode, or by the software
in
escape sequences.
E.2
INPUT
BUFFERS
Optional input buffers are used
by
both the serial
and parallel interfaces
for
storage
of
input data.
E.2.1
4K
Input
Buffer
The input buffer can
be
optionally expanded
to
4096 bytes.
E.2.2 16K
Input
Buffer
The input buffer can
be
optionally expanded
to
16384 bytes.
E.3 PAPER
TEAR
BAR
An
optional tear bar
is
available
to
assist the oper-
ator
in
tearing the paper. It
is
used on forms up
to
389 mm (15.3 in) wide and tears the forms 856 mm
(3-15/16 in) above the
top
dot
of
the current print
line.
E.4
PRINTER
STAND
A printer stand
is
available
as
an
option.
E.5
STAND-MOUNTED
PAPER
TRAY
A paper tray, designed
to
be
mounted
to
the
printer stand,
is
available
as
an
option.
E.6
PRINTER-MOUNTED
PAPER
TRAY
An optional paper tray, designed
to
be
mounted
to
the printer,
is
available.
E.7
CURRENT
LOOP
INTERFACE
The Current Loop Interface option
is
a half-size
board which plugs into the communication con-
troller slot. The interface uses a four-wire, pas-
sive, neutral current loop which does not interfere
with
the standard RS-232-C serial interface. Data
can be received from either interface, provided the
other interface
is
in a spacing condition or its con-
nector
is
unplugged.
E.8
RS422 INTERFACE
The RS422 Interface
is
a four-wire serial commun-
ication system which
is
electrically balanced
to
provide better performance at high speeds and
longer distances than
is
possible
for
RS-232-C.
Operation at 9600 baud at distances up
to
1200
meters (4000 feet)
is
possible with this
option.
The
RS422 Interface option
is
a half-size board
which plugs into the communication controller
slot.
E.9
RIBBON
Replacement ribbons are available
in
economical
six-packs
(TI Part No. 2246601-0002).
E-1
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