Digital Equipment DEClaser 320, Руководство по обслуживанию

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2.4 Set Up Menus
2.4.4 COMM INTERFACE
Table 2–7 shows the communication interface values that are available from
the COMM INTERFACE menu. The DEClaser 3200 supports both parallel
and serial interface connections. The host computer cannot set the printer’s
communication interface values. See Figure 2–4 to find the position of this
feature in the Set Up menu.
Table 2–7 COMM INTERFACE Menu
Feature Values Subvalues Comment
PARALLEL – – Selects the (Centronics)
parallel interface to
communicate with the host
computer.
SERIAL
1
BAUD
RATE
2
300
600
1200
2400
4800
9600
1
19200
The speed of the printer
and host must match, or
communication errors will
occur.
PARITY
2
8 BIT NONE
1
7 BIT ODD
7 BIT EVEN
7 BIT MARK
7 BIT SPACE
8 BIT ODD
8 EVEN
Parity checking detects
communication errors that
occur between the printer
and host computer.
FLOW
CONTROL
2
XON/XOFF 2-WAY
1
XON/XOFF 1-WAY
DTR READY HIGH
DTR READY LOW
Flow control prevents the
overflow of data buffers in the
printer, host, and prevents
data overruns or data late
type errors.
When XON/XOFF is enabled,
the host, printer, and DCE
transmit and receive special
characters that regulate the
flow of serial data.
The printer asserts or
negates DTR to signal the
host to transmit or hold data.
1
Factory default setting.
2
This subvalue only appears when serial is selected.
Control Panel Operations and Menus 2–13