Technical information

Controller Configuration
Manual No. 775029 3-11
This screen uses the following navigation strategy:
• Arrow keys move among the SCSI transfer property fields.
• The Spacebar brings up a list of valid options. Arrow keys move among
the options and Enter selects an option.
• The + and - keys cycle through the valid options. When the desired
option is visible, use the arrow key to move to another field.
• The Tab key shifts control to the buttons, or from the buttons back to
the SCSI transfer property fields.
• When buttons are in focus, arrow keys select a button and Enter
activates the highlighted button.
• At any time you can press Enter to accept the currently visible settings
and close the screen.
☛ Note
The Channel and Host ID fields are not changeable.
❑ View/Modify Bus Speed.
Default = 20MHz
The SCSI Transfer Bus Speed (MHz) function sets the maximum transfer
rate for each drive channel. The default setting is 20MHz. This setting
produces 20 MB/sec transfers for Fast SCSI and 40 MB/sec transfers for
Wide and Ultra SCSI. In general it is not necessary to change this parameter
since the controller “negotiates” the supported transfer rate with all of the
drives.
☛ Note
Problems communicating with a drive can be caused
by several conditions; e.g., improper termination,
wrong drive ID setting, SCSI cable is too long, faulty
equipment, etc.
However, if you do wish to change this setting...
☞ Use the arrow keys to select the Bus Speed (MHz) field for the
desired channel, then...