3.Installation
SONY AIT-4 drive SDX-900V series Ver.2.1
3-3
3.1.3.
Parity Disable Jumper
Parity check function can be disabled by Jumper. Parity check is disabled while left end jumper is installed. Parity
generate function is always enabled.
Parity
Setting
Disable
|
Enable
:
: = OPEN
Jumper not installed
| = CLOSED
Jumper installed
3.1.4.
Data Compression ON Switch
Data compression can be selected by DIP switch.
Table 3-3: Data Compression Switches
DC Control-1
DC Control-2
Definition
OFF
OFF
Compression disabled at power-on. The host is allowed to control
compression.
OFF
ON
Compression disabled at power-on. The host is not allowed to control
compression.
ON
OFF
Compression enabled at power-on. The host is allowed to control
compression.
ON
ON
Compression enabled at power-on. The host is not allowed to control
compression.
3.1.5.
Power Connector
The power connector is illustrated as Figure 3-4.
5V GND GND 12V
4 3 2 1
Figure 3-4: Power Connector
3.1.6.
SCSI 68 pin Connector
Figure 3-5 illustrates SCSI 68 pin connector, and table 3-4 shows the assignments for the pins of the connector.
Pin 34 1
Pin 68 35
Figure 3-5: Non-shielded SCSI Device Connector
SDX-900V supports both Low-Voltage-Differential SCSI configuration as shown table 3-4 and Single-Ended SCSI
configuration as shown table 3-5. SDX-900V detects and switches SCSI configuration between
Low-Voltage-Differential and single-ended modes by monitoring DIFFSENS signal assigned pin 16 in SCSI bus.
(Refer to table 3-4)