User manual SILVA PULSE

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Detailed instructions for use are in the User's Guide.

[. . . ] Termination is controlled by a set of electrical resistors, called terminators. Terminators must be placed (or enabled) at the two extreme ends of the SCSI bus. All devices that lie between the ends must have their terminators removed (or disabled). Terminating the AHA-2940Ultra Termination on the AHA-2940Ultra itself is controlled by software commands via the SCSISelect® utility. [. . . ] If you want to manually enable or disable the AHA-2940Ultra termination setting, see Configuring the Host Adapter on page 7. Terminating the AHA-2940Ultra Wide Termination on the AHA-2940Ultra Wide itself is controlled by software commands via the SCSISelect utility. We recommend that you leave the AHA-2940Ultra Wide set to its default setting of Automatic. If you want to manually set the AHA-2940Ultra Wide termination setting, see Configuring the Host Adapter on page 7. The following table lists the termination settings for manual configuration. AHA-2940Ultra Wide Termination Devices Connected to AHA-2940Ultra Wide 68-pin internal connector only 68-pin external connector only 68-pin internal and 68-pin external connectors 50-pin internal connector only 50-pin and 68-pin internal connectors 50-pin internal and 68-pin external connectors Low ON ON OFF ON OFF OFF High ON ON OFF ON ON ON Terminating SCSI Devices Read the device's documentation to determine how to enable or disable termination on your particular SCSI device(s). On most internal SCSI devices the termination setting is controlled by a jumper or a switch. On other internal SCSI devices you must physically remove or install resistor module(s). On most external SCSI devices, a terminating plug (a resistor pack embedded in a small plug) is installed or removed to control termination. 4 4 Installing SCSI Devices You can connect up to a total of seven internal and external 8-bit SCSI devices to the AHA-2940Ultra, and up to 15 devices (seven 8-bit internal and eight Wide (16-bit) internal or external SCSI devices, or 15 Wide internal and external SCSI devices) to the AHA-2940Ultra Wide. Note: You may only use two of the three connectors at any one time on the AHA-2940Ultra Wide host adapter. Choosing SCSI Cables The cables required to connect SCSI devices are determined by the type of devices you are installing, as described in the following table. SCSI Device Type 8-bit Internal SCSI 8-bit External SCSI 16-bit Internal Wide SCSI 16-bit External Wide SCSI AHA-2940Ultra 50-pin internal SCSI cable 50-pin high-density external SCSI cable -- -- AHA-2940Ultra Wide 50-pin internal SCSI cable -- 68-pin internal SCSI cable 68-pin external SCSI cable If you purchased your AHA-2940Ultra/2940Ultra Wide in an Adaptec kit, the kit includes an internal SCSI cable that allows you to connect up to two internal SCSI devices (the AHA-2940Ultra kit includes a 50-pin internal SCSI cable, and the AHA-2940Ultra Wide kit includes both a 50-pin and a 68-pin internal SCSI cable). If you are connecting more than two internal SCSI devices, you must obtain an internal SCSI cable with enough connectors to accommodate all of your devices. If your reseller does not stock these cables, you can order them directly from Adaptec. To toggle the display between color and monochrome modes, press F5 (this feature may not work on some kinds of monitors). Exiting SCSISelect To exit SCSISelect, press Esc until a message prompts you to exit (if you changed any AHA-2940Ultra/ 2940Ultra Wide settings, you are prompted to save the changes before you exit). At the prompt, select Yes to exit, then press any key to reboot the computer. Any changes you made in SCSISelect take effect after the computer boots. Using the SCSI Disk Utilities To access the SCSI disk utilities, select the SCSI Disk Utilities option from the menu that appears after starting SCSISelect. Once the option is selected, SCSISelect 9 immediately scans the SCSI bus and displays a list of all SCSI IDs and the devices assigned to each ID. When you select a specific ID and device, a small menu appears, displaying the options Format Disk and Verify Disk Media. s Format Disk--This utility allows you to perform a low-level format on a hard disk drive. Most SCSI disk devices are preformatted at the factory and do not need to be formatted again. The Adaptec Format Disk utility is compatible with the vast majority of SCSI disk drives. Verify Disk Media--This utility allows you to scan the media of a hard disk drive for defects. If the utility finds bad blocks on the media, it prompts you to reassign them; if you select yes, those blocks are no longer used. You can press Esc at any time to abort the utility. s 8 Installing Device Drivers Some operating systems embed (include) the AHA-2940Ultra/2940Ultra Wide device driver as part of their installation software. [. . . ] The SCSI ID is normally set with jumpers or switches on the drive. 3 If this does not solve the problem, back up all data on the SCSI hard disk and perform a low-level format with the SCSISelect Format Disk option. See the MS-DOS documentation for instructions on partitioning the disk after formatting. 12 FCC Compliance Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. [. . . ]

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