
40
*'75'
Valid connections and required GDTSETUP settings for the Wide/Ultra2 SCSI
Channels A, B and C.
External UHD Connector, 68 pin Internal 68 pin Connector Termination
Occupied and end terminated Occupied and end terminated Off or Auto
Occupied and end terminated Not occupied On or Auto
Not occupied Occupied and end terminated On or Auto
Not occupied Not occupied On or Auto
Not occupied Occupied and both ends terminated,
i.e., channel connector is located be-
tween the two ends
Off
Valid connections and required GDTSETUP settings for the Wide/Ultra2 SCSI
Channels D and E.
Internal 68 pin Connector Termination
Not occupied On
Occupied and end terminated On
Occupied and both ends terminated, i.e., channel connector is located between
the two ends
Off
Valid connections and required GDTSETUP settings for the Narrow/Ultra SCSI
Channel (Remark: The ICP firmware always assigns the Narrow/Ultra SCSI Chan-
nel as the last channel number, i.e., Channel F).
50 pin Connector Termination
Not occupied On
Occupied and end terminated On
Occupied and both ends terminated, i.e., channel connector is located between
the two ends
Off
%6&6,,'
All participants on the SCSI bus must have a unique identification number, that is, each
number can only be used once on a given cable. Each SCSI device is uniquely addressed
through its SCSI ID.
All participants of a SCSI bus must have a different SCSI ID.
The factory set SCSI ID of the ICP Controller SCSI channel is 7.
Up to 15 SCSI devices can be connected to the Wide/Ultra2 SCSI channels
Up to 7 SCSI devices can be connected to the Narrow/Ultra SCSI channel
On hard disks, CD-ROMs, tape streamers, etc., the SCSI ID is normally set through jumpers
or small GDT switches. The ICP Controllers offer a far more comfortable method: software
switches in the GDTSETUP program allow you to easily set the SCSI ID of a GDT SCSI chan-
nel. It is recommended to leave the default ID value at 7 (allowed values 0, 1, 2, 3, 4, 5, 6
and 7). Some operating systems require that the SCSI ID of certain SCSI device (e.g., tape
streamer, CD-ROM) is set to a particular value (for more information, please refer to the
appropriate chapter in this manual).
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