Xerox 721P83071 User Manual
BASIC CONCEPTS
System controller
The system controller contains the input subsystem and the
control subsystem electronics.
control subsystem electronics.
The input subsystem provides interfacing capability (online,
offline, Ethernet, and Dynamic Document Interface (for DEC, PC,
MAC, and UNIX LAN connectivity) for a variety of input sources
(host, magnetic tape, workstations, and graphic scanners).
offline, Ethernet, and Dynamic Document Interface (for DEC, PC,
MAC, and UNIX LAN connectivity) for a variety of input sources
(host, magnetic tape, workstations, and graphic scanners).
Note: Your quarter-inch cartridge tape and floppy disk drives are
not input sources for print jobs (refer to the “4635 LPS hardware
components” chapter).
not input sources for print jobs (refer to the “4635 LPS hardware
components” chapter).
The control subsystem performs all data handling, formatting,
buffering, and operational control of the system. It also provides
operator control through the LPS terminal or PC User Interface
(UI). Refer to the “4635 LPS hardware components” chapter for
more information on system controller components and these
subsystems.
buffering, and operational control of the system. It also provides
operator control through the LPS terminal or PC User Interface
(UI). Refer to the “4635 LPS hardware components” chapter for
more information on system controller components and these
subsystems.
LPS interfaces
The following LPS interfaces are available to connect a variety of
input sources to the LPS:
input sources to the LPS:
Offline interface
The offline interface permits input from a computer-prepared
magnetic tape which is loaded onto the magnetic tape drive.
The 9-track and 18-track magnetic tape drives are the optional
offline interfaces available for the 4635 LPS. Refer to the “4635
LPS hardware components” chapter for more information.
magnetic tape which is loaded onto the magnetic tape drive.
The 9-track and 18-track magnetic tape drives are the optional
offline interfaces available for the 4635 LPS. Refer to the “4635
LPS hardware components” chapter for more information.
Online interface
The online interface permits input from a channel-attached host
computer.
computer.
Ethernet interface
The Ethernet interface, using the host interface processor (HIP)
task, permits input from workstations or graphic scanners on a
shared or an unshared, but accessible, network.
task, permits input from workstations or graphic scanners on a
shared or an unshared, but accessible, network.
DDI interface
The Dynamic Document Interface (DDI) enables communication
between a 4635 LPS and network via a shared disk mechanism
over a SCSI bus. Refer to the Xerox Dynamic Document
Interface Operator Guide for information regarding the DDI.
between a 4635 LPS and network via a shared disk mechanism
over a SCSI bus. Refer to the Xerox Dynamic Document
Interface Operator Guide for information regarding the DDI.
LPS system disk storage and memory
The system disks store the operating system software (OSS) as
well as the system resources (fonts, forms, and graphics) that are
to be loaded into memory for use during input processing. Refer
to the “LPS software components” chapter for more information
on OSS.
well as the system resources (fonts, forms, and graphics) that are
to be loaded into memory for use during input processing. Refer
to the “LPS software components” chapter for more information
on OSS.
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XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE