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5–15Interfaces
RS–232 and RS–422 Serial Interfaces
NOTE: The RS–232 and RS–422 serial interface circuit characteristics are
compatible with the Electronic Industry Association Specifications
EIA–232–E and EIA–422–B.
The RS–232 and RS–422 serial interfaces enable the printer to operate with bit
serial devices that are compatible with an RS–232 controller. The input serial
data transfer rate (in baud) is selectable from the printer’s control panel. Baud
rates of 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115K baud
rates are available.
NOTE: If you select a baud rate that is greater than 19200, you may need
to use RS–422 to prevent data loss. You may also need to increase
the Buffer Size in K parameter from the default (1 Kbyte), to
improve performance.
The length of the data cable from the host computer to the printer must not
exceed 50 feet (15 meters) for RS–232 or 4000 feet (1220 meters) for RS–422.
(A copper conductor, twisted–pair telephone cable with a shunt capacitance of 16
pF/foot (52.5 pF/meter) terminated in a 100 ohm resistive load must be used for
the RS–422.)