Specifications

48 CHAPTER 4
THE ULTRA WIDE SCSI CONTROLLER
manual or technical documentation of the device to disable the passive termination, or ask
your local dealer or service center for advice if you are unsure about the SCSI termination
settings on your SCSI devices.
Please also make sure that an active termination is installed when you are using external
SCSI devices, e.g.by use of an external active termination plug.
ATTENTION!
It is absolutely necessary that the SCSI bus is correctly actively terminated to
provide safe and error-free operation. A wrong termination or the use of passive
terminators may result in data transmission errors or wrong recognition of SCSI
devices connected to the SCSI bus, or in the worst case cause data losses on
storage devices connected to the SCSI bus. Please always make sure that the
termination is installed correctly following the instructions in this manual, and
always avoid using any passive terminators in the SCSI chain connected to the
CYBERSTORM PPC SCSI controller.
SCSI TERMINATION (EXAMPLES)
Operation with an internal WIDE SCSI unit
Attention has to be paid that the termination is active on the hard disk. For the connection of
the hard disk use the plug at the end of the internal SCSI-cable. An active terminator pack
has to be connected to the other end of the cable. The CYBERSTORM PPC SCSI has to be
connected to one of the middle plugs of the SCSI cable.
CYBERSTORM PPC
Ultra-Wide-SCSI
controller
active active
terminated terminator
Ultra-WIDE-SCSI
device
Operation with an internal Fast SCSI unit
Attention has to be paid that the termination is active on the hard disk. For the connection of
the hard disk use an adaptor WIDE->Fast at the end of the internal SCSI-cable. An active
terminator has to be connected to the other end of the cable. The CYBERSTORM PPC SCSI
has to be connected to one of the middle plugs of the SCSI cable.
CYBERSTORM PPC
Ultra-Wide-SCSI
active terminated controller
Fast-SCSI active
device with terminator
adaptor
Wide- to FAST-SCSI
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