Akai S950 User Manual download pdf (Page 8)

of a complete data loss on the inserted card.

If the user is not completely aware of the behaviour of the operating system in connection with the

hard disk driver, it is strongly recommended to change the cards after the host has been shut down.

Power Supply

There are several possibilities to power the GigaFile. This mainly depends on the system to which it

is connected. In principle there are the following three options:

1. Connected Suska-III-C

2. Connected to a 19 pos. ACSI port.

3. As SCSI device, for example, in conjunction with a 25 pos. D-SUB adapter.

Configuration of the ACSI/SCSI Identification Number

On the top of the printed circuit board of the GigaFile there are three configuration bridges (solder

types, see 1). The respective ID number is selected, shortening these bridges partially or entirely.

The following table lists all possible ID numbers and the respective settings of the bridges. The

default factory setting of the GigaFile is ID 0.

SJ1 SJ2 SJ3 ID SJ1 SJ2 SJ3 ID

Open Open Open

Closed Open Open

Open Open Closed

Closed Open Closed

Open Closed Open

Closed Closed Open

Open Closed Closed

Closed Closed Closed

Table 2: ID Configuration

Bus Termination in the GigaFile's SCSI Mode

A correct bus termination is a prerequisite for a stable and accurate operation. The GigaFile is not

equipped with an internal bus termination circuitry, so there is a need for an external termination.

This is possible with a single ended termination, for example, from the host's side. This is possible

when the cable is short. Another way is to use external bus terminators. Please be aware that there

may be only two terminators located on each end of the SCSI bus, even if more than two devices are

connected. Deselect all internal bus terminations which are not required to meet this arrangement.

Tricks and Limits

This chapter describes some known issues concerning the operation of the GigaFile in conjunction

with the connected hardware and the hard disk driver used. The contexts are often not trivial and

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Akai S950 User Manual Page 8