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Chapter 10
MIDI, SCSI, and Sample Dumps
SCSI Guidelines
The following sections contain information on using SCSI with the K2500, as well as specific
sections dealing with the Mac and the K2500.
Disk Size Restrictions
The K2500 accepts hard disks with up to 2 gigabytes of storage capacity. If you attach an
unformatted disk that is larger than 2 gigabytes, the K2500 will still be able to format it, but
only as a 2 gigabyte disk. If you attach a formatted disk larger than 2 gigabytes, the K2500 will
not be able to work with it; you could reformat the disk, but this - of course - would erase the
disk entirely.
Configuring a SCSI Chain
Here are some basic guidelines to follow when configuring a SCSI chain:
1.
2.
According to the SCSI Specification, the maximum SCSI cable length is 6 meters (19.69').
You should limit the total length of all SCSI cables connecting external SCSI devices with
Kurzweil products to 17 feet (5.2 meters). To calculate the total SCSI cable length one
must add up the lengths of all SCSI cables, plus 8" for every external SCSI device
connected. No single cable length in the chain should exceed 8 feet.
The first and last device in the chain must be terminated.
The K2500 comes with SCSI termination enabled. You must disable this termination if the
K2500 will be in the middle of a SCSI chain or if you are installing a hard drive into the
K2500.
There are three ways to disable the K2500's termination, depending on the manufacture
date of the unit. Newer K2500's have an external "SCSI Termination Enable/Disable"
switch on the rear panel. Older K2500's require either the removal of SCSI termination
resistors or a jumper setting; these modifications can only be performed by an authorized
service center.
Poor termination is a common cause of SCSI problems. Having more than two terminators
on the bus will overload the bus drivers, but this should not cause permanent damage to
the hardware. Poor termination can corrupt the data on your disk, however, as can bad
SCSI cables.
For the K2500R, if it is not located at one end of a SCSI chain all internal termination,
including the terminator resistor network on the K2500 Engine Board plus terminator
resistors in the internal SCSI drive must be removed. It is much simpler to just make sure
that the K2500 is at one end of the SCSI chain.
For a K2500 keyboard model, it must be at the end of the SCSI chain if it has an internal
disk drive.
A note about active termination - The K2500 uses active termination of the SCSI bus.
Active termination has some benefits over traditional passive termination. Some people
have positioned active termination as a panacea for SCSI problems, but this is more hype
than reality. Active terminators are available to be used at the end of one's SCSI chain and
MIDI, SCSI, and Sample Dumps
SCSI Guidelines
10-1
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Related Manuals for Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 10
Summary of Contents for Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910252 CHAP 10
- Page 1 You should limit the total length of all SCSI cables connecting external SCSI devices with Kurzweil products to 17 feet (5.2 meters). To calculate the total SCSI cable length one must add up the lengths of all SCSI cables, plus 8" for every external SCSI device connected.
- Page 2 When using a Macintosh, power up the K2500 and other devices first. 10. The K2500 file format is a proprietary format; no other device will be able to read or write 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.
- Page 3 MIDI, SCSI, and Sample Dumps SCSI Guidelines If the K2500 is connected to a Macintosh or PC you should make sure that the computer cannot access a SCSI disk at the same time the K2500 does (see below for more information on this).
- Page 4 MIDI, SCSI, and Sample Dumps SCSI Guidelines Accessing a K2500 Internal Drive from the Mac Access PC is one of the many programs for the Mac which allow it to format, read, and write to DOS floppy disks and removable SCSI cartridges. However, we have discovered that it is possible to format internal K2500 hard drives, even though the documentation claims to only support removable media (not a fixed drive).
- Page 5 MIDI, SCSI, and Sample Dumps The MIDI Sample Dump Standard The MIDI Sample Dump Standard Samples can be transferred between the K2500 and most other samplers and computer sampling programs using the MIDI Sample Dump Standard. Due to the relatively slow transfer rate of MIDI data, transferring samples into the K2500 via the MIDI Sample Dump Standard can take a long time, on the order of a coffee break for a long sample.
- Page 6 MIDI, SCSI, and Sample Dumps The MIDI Sample Dump Standard At this point, you’re ready to try loading a sample. See “Accessing a New K2500 Sample” later in this section to learn how to use samples once they’ve been dumped to the K2500. Getting a Sample into a Sample Editor from the K2500 Connect the MIDI ports of the K2500 and the computer/sampler in a closed-loop configuration as described for the Sampler/Computer to K2500 procedure above.
- Page 7 MIDI, SCSI, and Sample Dumps The MIDI Sample Dump Standard KEYMAP soft button, and select a keymap. Use the default keymap called “168 Silence” if you don’t want to alter any existing keymaps. Now, enter the Keymap Editor by pressing EDIT once again. Use the Sample parameter to select the new sample.
- Page 8 SMDI sample transfers to and from the K2500. SMDI is a new technology, however, and many software developers are working on packages that will support K2500 SMDI sample transfers. Your Kurzweil/Young Chang dealer can let you know about new developments. 10-8...
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