User`s guide

Configuration
2.2 Mass Storage Devices
2.2.6 SCSI ID Numbers
Each mass storage device must have a unique SCSI ID number. SCSI ID 6 is
typically used for the SCSI controller.
2.2.7 DSSI ID Numbers
Each mass storage device must have a unique DSSI ID number. DSSI ID 6 or
7 is typically used for the DSSI controller.
2.3 Communications Options
A KA52/53/54 system supports the following types of communications options:
• Asynchronous communications options
• Synchronous communications options
Each communications option has components that are installed in the system
enclosure and components that connect to the system externally.
2.3.1 Asynchronous Communications Options
Table 2–2 lists the asynchronous communications options that KA52/53/54
systems support.
Table 2–2 Supported Asynchronous Communications Options
Option Description
DHW42-AA Eight-line DEC423 asynchronous option
DHW42-BA Sixteen-line DEC423 asynchronous module option
DHW42-CA Eight-line EIA-232 modem asynchronous module option
DHW42-UP Eight-line to 16-line DEC423 asynchronous upgrade option
2.3.2 Synchronous Communications Options
Table 2–3 lists the synchronous communications options that KA52/53/54
systems support.
2–6 Configuration