Digital Electronics Corporation PL-3900T Series 설치 매뉴얼 - 페이지 6

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[Power Management option]-[Turn off hard disks] selection to turn the hard disk off

when the unit is not being operated. A setting of 5 minutes is recommended.

• Do not vibrate the hard disk continuously at the same frequency. Doing so may cause

the hard disk to reduce transfer speeds or stop temporarily.

Internal Switches

To operate the internal switches, uninstall the control box and the front module.

SEE

Installation/uninstallation of the front module and the control box (page 13)

• Make sure to turn off the power supply before using the switches. Adjusting the

switches while power is supplied may cause errors.

Internal switches of the control box

Bottom face of the control box

Switch

Switch Name

Location

SW1 System Set SW

Serial Mode

SW2

Select SW

CI(RI)/+5V

SW3

Changeover SW

CI(RI)/+5V

SW4

Changeover SW

SW1

Compatible

Factory

I/F

Settings

See

–

System

Set Switch

All OFF

COM1

(RS-232C)

COM2

CI(RI)

COM1

CI(RI)

SW2

SW3

(CI)RI

Description

10-point dip switch. For System Set

SW and the factory settings details,

see

System Set Switch.

10-point dip switch. Designates COM1

communication settings. For Serial

Mode Select SW details, see

Mode Select Switch.

Changes # 9 pin (CI(RI) <---> +5V).

SW4

Serial