Black Box SWL930A-R2 User manual

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

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)

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

Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

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

JANUARY 1998

SWL930A-R2

SWL931A-R2

SWL932A-R2

SWL933A-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

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.

Multiple Workstations Sharing Multiple Processors Controlled

a Single Processor. by One Keyboard.

KEYBOARD/

VIDEO PAIR A

KEYBOARD/

VIDEO PAIR B

PROCESSOR MONITOR

KEYBOARD

PROCESSOR A PROCESSOR B

INSTALLATION AND OPERATION

NOTE

With an IBM PC/AT®or compatible, you might need to resort to the full

reboot to regain control of the keyboard.

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.

FRONT REAR

Views of the Switch.

BCA

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