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Installation clearances, both for the ACB-5500 and the selected
power and signal cabling configuration,
should be sufficient to
optimize system cost, manufacturability, and maintainability.
The ACB-5500 emits a small amount of radio-frequency signals.
Extremely sensitive components,
such as high band-width analog
sensors,
should be properly shielded from the ACB-5500.
Normal
cas e
con st r u c t ion
i s s u f f i c i en t
to
s hie I d
the
A CB - 55 00
as
required by the FCC.
If FCC compliance is required and the SCSI
leaves the box in which the ACB-5500 is installed,
the high
frequency signals generated by normal SCSI operation may require
connector and cable shielding.
The ACB-5500 and all other partially shielded electronic devices
are sensitive to high power high frequency electrical or magnetic
sources.
The ACB-5500 should be protected from such sources
while it is operating.
In particular, unshielded switching power
supplies should be physically isolated from all electronic boards
and their interconnecting cables.
External noise sources,
such
as welding machines and radio transmitters, should be similarly
isolated from electronic systems.
Cable and connector shielding
may be required in some environments.
An appropriate power source must be provided.
Care should be
taken to prevent ground loops and other power disturbances.
Proper programming support must be provided to generate the
required command sequences.
Additional program support must be
provided to manage the SCSI protocols.
Any system supporting the
ACB-4000 will also support the ACB-5500.
Use of the advanced
performance oriented functions will require a more powerful SCSI
host adapter that supports disconnect/reconnect, command linking,
and arbitration.
Use of the advanced command functions requires
expanded software support.
Adaptec's host adapters will provide
the required SCSI protocol services, but must receive the com-
mands to be executed from appropriate system software.
Many
other SCSI systems are also available.
3.3
INSTALLATION
The following steps are required for installation of the ACB-5500
into a system properly designed to accept it.
These steps are
separate from any other testing and installation procedures
required by other portions of the system, but can often be done
in conjunction with those other installation steps.
1)
Inspect
ACB-5500
for
obvious
physical
damage
before
installing.
2)
Install
proper
jumpers
(see
Section
3.4)
to enable
the
desired ACB-5500 functions and to define the address of the
ACB-5500 on the SCSI Bus.
3)
Install ACB-5500 with appropriate mounting hardware.
500504-00
3-2
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