Akai mpc2000 User Manual
Page 162
Appendix
Notes on Using SCSI Drives
Connecting an External SCSI Drive
SCSI devices (hard disk drives) are connected as follows:
The MPC2000 uses a 25-pin SCSI connector to load or save data to
such devices such as the hard disk connected by a SCSI cable. By
setting the SCSI ID, it is possible to connect multiple SCSI devices on
the same SCSI bus. When multiple SCSI devices are connected to the
MPC2000, it is possible to select the disk you want to work with using
an ID number.
such devices such as the hard disk connected by a SCSI cable. By
setting the SCSI ID, it is possible to connect multiple SCSI devices on
the same SCSI bus. When multiple SCSI devices are connected to the
MPC2000, it is possible to select the disk you want to work with using
an ID number.
CAUTION:
CAUTION:
CAUTION:
CAUTION:
CAUTION:Although many types of SCSI drives such as hard
disks are available, not all can be connected to the
MPC2000. Consult the dealer about the types that
can be used.
MPC2000. Consult the dealer about the types that
can be used.
SCSI Cables
Always use high quality SCSI cables. Using cheaper SCSI cables may
seem an attractive proposition, especially if you have a tight budget
but low quality cables can give rise to data errors.
seem an attractive proposition, especially if you have a tight budget
but low quality cables can give rise to data errors.
The SCSI connection requires that every connection is individually
grounded. There are two main types of SCSI cable you can buy. One is
the ‘moulded’ type with moulded connectors either end and a round
cable. The other type are flat ‘ribbon’ cables. This type of cable is re-
ally intended only for use inside devices.
grounded. There are two main types of SCSI cable you can buy. One is
the ‘moulded’ type with moulded connectors either end and a round
cable. The other type are flat ‘ribbon’ cables. This type of cable is re-
ally intended only for use inside devices.
Some moulded cables only have a single ground for all the connections
and so can be unreliable. They are probably fine when used with a
computer for loading small documents such as word processor files,
etc., but with the large amounts of sample data used on the MPC2000,
we have had reports of them causing problems.
and so can be unreliable. They are probably fine when used with a
computer for loading small documents such as word processor files,
etc., but with the large amounts of sample data used on the MPC2000,
we have had reports of them causing problems.
The flat ribbon cables, however, have individual grounding for each
connection and so are generally more reliable but, because they are
intended for use inside devices (where they are separately screened),
they sometimes have insufficient screening which may cause data
noises to appear in your audio signal path when any disk activity is
going on, especially if your audio connections run parallel with the
SCSI lead. However, if this is not a problem for you (and in a studio it
may not be), these cables are usually very good and usually perform
much more reliably. In a live situation, however, they are probably
not ideal.
connection and so are generally more reliable but, because they are
intended for use inside devices (where they are separately screened),
they sometimes have insufficient screening which may cause data
noises to appear in your audio signal path when any disk activity is
going on, especially if your audio connections run parallel with the
SCSI lead. However, if this is not a problem for you (and in a studio it
may not be), these cables are usually very good and usually perform
much more reliably. In a live situation, however, they are probably
not ideal.
SCSI CABLE
SCSI INTERFACE
HARD DISK DRIVE
(or CD-ROM, etc.)
(or CD-ROM, etc.)
To other
SCSI devices
SCSI devices