the printer buffer is enabled. The buffer is a memory
which can temporarily store data from a computer.
Table 3. Band rate selection
Note
Switch combinations other than those shown above will
be taken as a setting for
8
Buffer full recovery timing
When the available space for bytes in the print buffer
drops to 512 or 16 bytes, data entry is disabled. As the
printer prints the data in the buffer, the vacant area for
bytes increases. when this vacant area reaches one of
cation is resumed. These settings are selectable by using
the DIP switches.
The jumper is a small terminal used for connecting or
disconnecting a circuit. The jumper is on when the
jumper plug covers
both wires of the terminal. Jumper
settings can be changed by either attaching or removing
the rectangular jumper plug. If the jumper is to be
turned off, connect it to just one of the two terminal pins
as shown in the figure below. By doing this, you can
avoid losing the unused jumper plug.
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Dip switch 2 (interface operations)
The table below contains information
on
switch func-
tions, and the factory setting of each switch The
switches on DIP switch 2 allow you to change interface
functions and select the self test modes .
Note
This interface board operates when DIP switch 2-1 is
turned on. By turning this switch off, the parallel
interface of the printer can be used even with the serial
interface board installed. You should, however, remove
any unused interface cable to prevent the possibility of
radio frequency interference.
9
Jumper settings
The tables below give you information about the
interface conditions that can be selected using jumpers.
In all cases, ON denotes the connection of the jumper
(covering both terminals), while OFF denotes the
disconnection of the jumper.
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