User guide

DiscView PRO User Guide
A-10
Supported CD-ROM Drives
DiscPort, DiscPort XL, DiscPort PRO, and DiscPort Executive
work with most external CD-ROM drives that support the
SCSI-II specification. Drives that require a proprietary
adapter are not supported through DiscPort hosts.
SCSI supports up to 8 devices on the bus, including the host
adapter. The DiscPort, as the adapter, uses SCSI ID 7. The
DiscPort PRO has two SCSI adapters, both using SCSI ID 7,
giving you virtually two separate SCSI buses. When configur-
ing the CD-ROM drives on the SCSI chain, use IDs 0 through
6 to avoid conflicts.
IMPORTANT: Portable CD-ROM drives are not sup-
ported by DiscPort hosts. Most portables use proprietary
interfaces which are not 100% compliant with SCSI-II
specifications.
List of Supported CD-ROM Drives
For a current list of supported CD-ROM drives and disc
changers, refer to DiscView on-line Help or README.TXT. In
addition to the current list, other SCSI-II compliant CD-ROM
drives may also be compatible.
Miscellaneous Suggestions
Multiple Drives – When chaining six or seven drives on one
DiscPort host, you should not use the drives’ internal termina-
tion. External active termination is required. This is usually
done via a dip switch setting on the back of the drive. Make
sure you use a terminator on the last drive on the SCSI bus.
Power-on Order – Power on the CD-ROM drives first, before
powering on the DiscPort unit.
Cable Lengths – The total length of cable on a single-ended
SCSI bus should not exceed 6 meters (19.68 feet).