SCSI conformance
5-6
The scanner conforms to the SCSI specifications as follows:
•
Single-ended, 8-bit bus, Cable A, shielded connector
(Alternative 2). Cable B is not supported.
•
Single-initiator (one host) is supported. Disconnect and
Reselect are not supported.
•
Asynchronous maximum transfer rate of 1.2 M Bytes per
second.
•
Linked commands and command queuing are not supported.
•
Programmable target ID dip switch is factory set to 1.
•
RST signal reset is only monitored. See the hard reset
alternative in SCSI Specifications (Section 5.2.2.1).
•
The scanner supports Unit Attention condition following
power-up, SCSI bus device reset command or hard reset.
Refer to Section 6.13 of SCSI Specifications.
•
The scanner operates as a target.
•
The internal SCSI cable consumes 5 feet (1.5 meters) of the
maximum cable length allowed (19.7 feet/6 meters).
•
The scanner provides termination power.
A-61124 March 1999