Akai MPC 2000xl - Manual (Page 200)

Chapter 13: Appendix
Page 189
Notes on Using SCSI Drives
Connecting an External SCSI Drive
SCSI devices (hard disk, MO drives, etc.) are connected as follows:
The MPC2000XL uses a 50-pin high-pitch SCSI connector to load or save data to other devices
such as hard disks connected by a SCSI cable. By setting the SCSI ID number, it is possible to
connect multiple SCSI devices on the same SCSI bus. When multiple SCSI devices are con-
nected to the MPC2000XL, it is possible to select the disk you want to work with using that ID
number.
CAUTION: Although many types of SCSI drives are available, not all can be connected
to the MPC2000XL. Please consult the dealer about the types that can be
used.
SCSI Cables
Always use high quality cables. Using cheaper cables may seem an attractive proposition, espe-
cially if you have a tight budget but low quality cables can give rise to data errors.
There are two main types of cable that 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 really intended only for use inside devices.
The SCSI connection requires that every connection is individually grounded. Some moulded
cables only have a single ground for all the connections and 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 MPC2000XL, we have had reports of them
causing problems.
The flat ribbon cables, however, have individual grounding for each connection and so are gener-
ally more reliable but, because they are intended for use inside devices (where they are sepa-
rately 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 con-
nections run parallel with the SCSI cable. 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.
MIDI
OUT MIDI IN
SCSI
ASSIGNABLE MIX OUT
1 2 3 4 5 6 7 8 IN UT
DIGITAL
RECORD IN
STEREO
OUT
RIGHT LEFT ES RIGHT LEFT
IN OUT
SMPTE
A B 1 2
SCSI CABLE
SCSI INTERFACE
HARD DISK DRIVE
(or CD-ROM, etc.) Other SCSI device