Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 10 Manual page 2

MIDI, SCSI, and Sample Dumps
SCSI Guidelines
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10. The K2500 file format is a proprietary format; no other device will be able to read or write
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13. As long as the SCSI bus is properly terminated there is no way you can damage your
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all APS SR2000 series external drives use internal active termination that can be switched
on or off.
Each device in the chain (including internal hard drives) must have its own unique SCSI
ID. The default K2500 ID is #6. Macintoshes use ID #7 & #0.
Use only true SCSI cables - high quality, twisted pair, shielded SCSI cable. Do not use
RS432 or other non SCSI cables.
The majority of SCSI cables we've tested were poorly made and could damage data
transferred to and from the disk. Nearly all the SCSI data problems Young Chang's
engineering department has had have been due to bad cables that didn't twist pairs of
wires properly. Correctly made SCSI cables have one ground wire for every signal wire
and twist them together in signal/ground pairs. Cables made by APS Technologies (800-
233-7550) are very good and are highly recommended. Young Chang manufactures 1 and
2 meter 25-25 SCSI cables, that we can also recommend. Good cables are essential to
reliable data transfers to and from the disk drive.
You should buy all SCSI cables from a single source to avoid impedance mismatch
between cables.
Theoretically all eight SCSI IDs can be used. However, feedback from users has shown us
that many people have problems with more than 5-6 devices in a chain. If you have 7 or 8
devices and are having problems, your best bet is to make sure you have followed all of
the previous information, especially with respect to cables.
Connect all SCSI cables before turning on the power on any equipment connected by SCSI
cables. Plugging or unplugging SCSI cables while devices are powered on can cause
damage to your devices or instrument.
Authorized service centers should remove termination from the K2500 when installing an
internal drive, set its ID correctly, and terminate the drive.
When using a Macintosh, power up the K2500 and other devices first.
a Kurzweil file.
The floppy disk format of the K2500 is DOS. The SCSI disk format is a proprietary form
that is close to DOS, but it is not DOS. Nonetheless, the K2500 can read and write to a DOS
formatted disk provided it was formatted on the PC with no partitions.
It is possible to view, copy, move, name, delete files on a K2500 formatted floppy disk or
removable media hard drive, with a PC or Macintosh running a DOS mounting utility
program such as Access PC.
hardware simply by operating it. There are a few hazards K2500 users should be aware of,
however:
The only damage that usually occurs to SCSI hardware comes from static electricity
"zapping" SCSI connector pins when the cables are disconnected. The silver colored shell
of the SCSI connector on the end of the cable is connected to ground and is safe to touch,
but the brass colored pins inside eventually lead to the SCSI interface chip and are
vulnerable. You should discharge static from your body before touching SCSI connectors
by touching the 1/4" jacks on the rear of the K2500 or another grounded metal object. Any
devices connected to the SCSI bus should be turned off when plugging or unplugging
SCSI cables.