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Medalist Pro 2160N/2160WC Product Manual, Rev. A
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2.8 Active Termination
Active termination is configured on the ST52160N using pins 11 and 12
on the J5 options jumper block. Active termination is enabled when there
is no jumper on pins 11 and 12. Active termination is disabled when a
jumper is placed on pins 11 and 12. The drive provides termination
power to the drive's terminator chips and to the SCSI bus. No other option
is available.
Termination is not provided on the ST52160WC. You must provide your
own external termination as required.
2.9 Parity enable option
Parity is enabled on the ST52160N when a jumper is installed on pins 7
and 8 of the options jumper block (J5). Parity is enabled on the
ST52160WC when a jumper is installed on pins 9 and 10 of the options
jumper block (J5). Both drives are shipped with parity enabled.
2.9.1 Motor Start option
The Motor Start option causes the drive to wait for a Start/Stop Unit
command from the host before starting or stopping the spindle motor.
Motor Start is enabled on the ST52160N when a jumper is installed on
pins 9 and 10 of the options jumper block (J5). Motor Start is enabled on
the ST52160WC when a jumper is installed on pins 11 and 12 of the
options jumper block (J5).
2.9.2 Remote LED connection
Pins 13 and 14, located on the options jumper block, are reserved for a
remote LED. Pin 13 is ground. The options jumper block accepts 2-mm
connectors. You may need to replace the current LED cable-connector
with a 2-mm connector. If you are placing the drive in an array configu-
ration, we recommend the LiteOn (part number LTL-3231A) LED or
equivalent.
2.10 Daisy chaining
You can connect the ST52160N in a daisy-chain configuration with a
maximum of eight SCSI devices (host included) that have single-ended
drivers and receivers. Each SCSI device must be set to a unique SCSI
ID number. SCSI ID 7 is usually used by the host adapter.
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