User's Guide
C-8 Interfaces
RS-232-C Serial Interface
The serial interface conforms to the Electronics Industries Association
(EIA) RS-232-C standard for serial communications. This standard
describes a data transfer method between data terminal equipment
(DTE) and data communications equipment (DCE). DTE refers to
computers; DCE refers to modems or other data communications de-
vices. Since the RS-232-C standard does not take printers into account,
manufacturers are free to produce printers that operate as either DTE or
DCE. AMT printers operate as DTE device.
The RS-232-C serial interface contains 25 lines. Only 10 lines carry
signals or are grounded; the remaining 15 lines are not connected.
Voltages
Each line can carry two voltage levels: high and low. Timed high-to-low
and low-to-high transitions on these lines enable the transfer of logical
information. Valid RS-232-C voltage levels are as follows:
9
9
9
9
9
High (+): +3 to +25 volts
9
9
9
9
9
Low (-):
-25 to -3 volts
Signals and Data Format
The serial interface consists of eight signal lines and two ground lines:
9
9
9
9
9
Data Set Ready
9
9
9
9
9
Data Carrier Detect
9
9
9
9
9
Request To Send
9
9
9
9
9
Clear To Send
9
9
9
9
9
Transmit Data
9
9
9
9
9
Receive Data
9
9
9
9
9
Data Terminal Ready
9
9
9
9
9
Inverted Data Terminal Ready
9
9
9
9
9
Chassis and Signal Grounds
User's Guide
C-8 Interfaces
RS-232-C Serial Interface
The serial interface conforms to the Electronics Industries Association
(EIA) RS-232-C standard for serial communications. This standard
describes a data transfer method between data terminal equipment
(DTE) and data communications equipment (DCE). DTE refers to
computers; DCE refers to modems or other data communications de-
vices. Since the RS-232-C standard does not take printers into account,
manufacturers are free to produce printers that operate as either DTE or
DCE. AMT printers operate as DTE device.
The RS-232-C serial interface contains 25 lines. Only 10 lines carry
signals or are grounded; the remaining 15 lines are not connected.
Voltages
Each line can carry two voltage levels: high and low. Timed high-to-low
and low-to-high transitions on these lines enable the transfer of logical
information. Valid RS-232-C voltage levels are as follows:
9
9
9
9
9
High (+): +3 to +25 volts
9
9
9
9
9
Low (-):
-25 to -3 volts
Signals and Data Format
The serial interface consists of eight signal lines and two ground lines:
9
9
9
9
9
Data Set Ready
9
9
9
9
9
Data Carrier Detect
9
9
9
9
9
Request To Send
9
9
9
9
9
Clear To Send
9
9
9
9
9
Transmit Data
9
9
9
9
9
Receive Data
9
9
9
9
9
Data Terminal Ready
9
9
9
9
9
Inverted Data Terminal Ready
9
9
9
9
9
Chassis and Signal Grounds
Summary of Contents for ACCEL-6300
Page 1: ...AMT ACCEL 6300 Document No 387002 Rev E User s Guide P R I N T E R S E R I E S ...
Page 3: ...User sGuide ii Preface ...
Page 15: ...AMTDATASOUTHCORP 4765 Calle Quetzal Camarillo CA 93012 ...
Page 23: ...User sGuide xxii Contents ...
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