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Table of Contents
Related Manuals for Adaptec APA-348
Summary of Contents for Adaptec APA-348
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Page 1: Installation Guide
Installation Guide APA-348 MiniSCSI Plus Parallel-to-SCSI Host Adapter... - Page 2 Overview This Installation Guide explains how to physically install and configure Adaptec APA-348 MiniSCSI Plus Parallel-to-SCSI host adapters. The MiniSCSI Plus has been designed to provide simple, flexible control of most SCSI devices. The adapter’s high- speed operation is fully compatible with bidirec-...
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Page 3: Host Adapter Layout
Host Adapter Layout This diagram shows the APA-348 components. Default Settings The MiniSCSI Plus operates correctly with the fac- tory default settings in most PCs: Parameter Host Adapter SCSI ID Host Adapter Termination Port Address Speed Selection Extended Translation for Drives Over 1 GByte See Maximizing Performance on page 5 to increase speed. - Page 4 Connecting the MiniSCSI Plus WARNING: and SCSI devices when connecting or dis- connecting the MiniSCSI Plus. This protects against damage to any components. Connect the MiniSCSI Plus parallel port connector to a parallel printer port on your computer. You may use either LPT1, LPT2 or LPT3—the MiniSCSI Plus drivers automatically detect which port is in use.
- Page 5 Assigning SCSI IDs If you connect more than one SCSI device to the MiniSCSI Plus simultaneously, make sure that each device’s SCSI ID (device number between 0 and 6) is different; ID 7 is reserved for the adapter and cannot be changed.
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Page 6: Maximizing Performance
Caution: device(s) from the MiniSCSI Plus while in use, the adapter loses power and does not recognize the SCSI device(s) when recon- nected. Reboot your computer in this case. Connecting the Printer Connect a standard parallel printer cable to the MiniSCSI Plus printer passthrough connector if you wish to simultaneously use a parallel printer with your MiniSCSI Plus. - Page 7 many system configurations, implementing a spe- cial data-transfer mode can result in a 15-20% speed improvement. Before trying the techniques described below, make sure your SCSI hardware and software are properly installed and configured, and running without prob- lems. Attempts to improve performance may not work on your particular installation.
- Page 8 The /M1 setting enables blind mode, and /M0 (or no /M entry) is standard full handshaking. The change is made to the line device=[ path ]ma348.sys in your config.sys file, using any standard text editor. For example, to turn full handshaking off for better per- formance, the line should look something like this: device=\tscsi\ma348.sys /m1 After making this change and saving your config.sys...
- Page 9 have blind mode compatibility and should remove the /M1 switch from config.sys . If no problems are noted, proceed to the next step. Perform a chkdsk command on all hard disk drives (without the /F option) and/or a chkcd (supplied with your software) command on all CD-ROM drives.
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Page 10: Troubleshooting
If you share your MiniSCSI Plus adapter among several systems or carry it for use on other sys- tems, do not use the /M1 switch unless you are absolutely sure that the other systems are com- patible. Changes may take place to the system configuration in your absence. - Page 11 For example, you may have the CD-ROM driver loaded, but you are trying to work with a hard disk drive or vice versa. Each Adaptec software driver recognizes the existence of all SCSI devices attached to the SCSI chain but only works with the device for which it is written to communicate.
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Page 12: Scsi Connector Pinouts
SCSI Connector Pinouts This section documents the SCSI interface connector on the MiniSCSI Plus as well as typical connectors found on SCSI devices. Internal SCSI devices com- monly use a 50-pin header connector (SCSI specifica- tion, Alternative 1), consisting of two rows of 25 male contacts with adjacent contacts 2.54 mm (0.1 inch) apart, as shown below. - Page 13 Board Service (BBS) 24 hours a day at 408-945-7727; 1200/2400/9600/14400 baud, 8 data bits, 1 stop bit, no parity. For the latest online information about Adaptec products and services, call the Interactive Fax Service 23 hours a day, 7 days a week, at 408-957-7150.
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Page 14: Fcc Compliance Statement
Each APA-348 is equipped with an FCC compliance label which shows only the FCC Identification number. The full text of the associated label follows: This device complies with part 15 of the FCC rules.
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