Black Box SW930A-R2 Manuale utente

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

PC KEYBOARD/VGA SWITCH

1. Specifications

Leads Supported —

High-density 15-pin:1-8, 10-15,

pin 9 is keyed

5-pin DIN: All

Controls — 1 reset button, 1 rotary

knob

Connectors — Keyboard: 5-pin DIN

female; Monitor: keyed 15-pin high-

density DB15 female

Enclosure — High-impact plastic

Temperature — -20° to 70°C

(-4° to 158°F)

Humidity — 0 to 95% noncondensing

Size — 3.5"H x 19"W x 5"D

(9 x 48 x 13 cm)

Weight — 1.4 lb. (0.6 kg)

2. Introduction

The PC Keyboard/VGA Switch helps

you to squeeze more work out of an

underused VGA-based PC or

keyboard/monitor combination.

You can split the use of a single

processor between three or more

occasional users and give each a

private keyboard and monitor, or

use a single keyboard and monitor

to toggle back and forth between

three or more processors.

You save hundreds of dollars that

you might have spent on duplicate

equipment, and eliminate the

repeated nuisance and wear

of recabling.

The reset button on the Switch

reduces the chance of a complete

keyboard lockup when you switch

between processors. In every

mechanical switch, rotation creates

a momentary break between the

contacts, cuts the current supplied

to the keyboard, and poses the

threat of a “freeze.” One remedy

is a disruptive system reboot, which

would destroy work in progress. The

reset button provides a much less

harmful alternative—it signals the

keyboard to reinitialize without

affecting the data held in the

computer.

Note: With an IBM PC/AT®or compatible, you

might need to resort to the full reboot

to regain control of the keyboard.

Multiple Workstations Sharing

a Single Processor.

Multiple Processors Controlled

by One Keyboard.

MONITOR

KEYBOARD

PROCESSOR A PROCESSOR B

KEYBOARD/

VIDEO PAIR A KEYBOARD/

VIDEO PAIR B

PROCESSOR

INSTALLATION AND OPERATION

3. Installation and Operation

These are the extra cables you’ll

need for installation. If you don’t

already have these or similar cables,

call your sales or technical

representative.

Name and Function Code No.

VGA Video Extension

joins monitor w/ switch EVNPS04

5-Pin DIN Cable

joins keyboard w/switch EVNBDC

To install the switch:

1. Shut off all processors and

monitors.

2. Plug the cables from the

keyboard, monitor, and

processor into the Switch.

The common device plugs

into the socket marked “C”

on the keyboard, and the

components to be switched

plug into the sockets marked

“A” , “B” , etc.

3. Turn on all monitors and

processors.

4. Rotate the knob to “A” and

check the operation of your

system. Rotate the knob to

“B” and check the system

again. (If you are switching

between processors, you may

need to press the reset button

to clear the keyboard.)

5. If you encounter problems,

disconnect your system from

the Switch and test all monitors

and keyboards directly. Check

your cables as well. If the source

of your problem is the switch,

call your technical support

representative.

BCA

Views of the Switch.

Front

Rear

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

SEPTEMBER 1994

SW930A-R2

SW931A-R2

SW932A-R2

SW933A-R3

SR930A-R2

SR931A-R2

SR932A-R2

SR933A-R2

AT Keyboard/VGA Video Switch

6-to-1 model

5-to-1 model

4-to-1 model

3-to-1 model

A B

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