Printronix P7000 Cartridge Ribbon Printer - Manual (Page 276)

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Chapter 5 RS-232 And RS-422 Serial Interfaces
Figure 23. Terminating Resistors, V6 Controller Board
Removal And Installation
The procedure for removing and installing terminating resistors is provided in
your
Maintenance Manual.
CAUTION This is an involved maintenance procedure. To avoid damage to the
equipment, only a trained technician should perform this procedure.
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 115200
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.
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.)
183480a
Default: 470/1K Ohm
Alt: 220/330 Ohm
RP1 and RP2