Black box Sw490a User manual

Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: [email protected]

Black Box Corporation.

2/17/2000 #17848

Share four serial or

parallel devices among

four or eight computers.

With proper cables,

share eight devices

among four computers.

Parallel models

support all modes of

bidirectional IEEE 1284.

Transparent to very

high data rates.

LEDs for each possible

computer/device

combination.

f you have an office full of IBM®

PC compatible computers, and

you’d like them to share a few

RS-232 serial or parallel devices,

do you have to install a LAN and a

print server or terminal server? Or

maybe some sophisticated

software? Or a really expensive

automatic switch with more

features than your average sports

car?

No! Just get a Manual Matrix

Switch. Cable your computers

and peripheral devices to it, plug it

in, and you can press the keys on

its membrane touchpad to

connect any computer to any

device. The Switch will beep, its

corresponding LED will light, and

the user on that computer will be

ready to communicate with the

device. It’s almost as simple to

operate as a toaster!

There are four models of the

Manual Matrix Switch: 4 x 4 Serial

(our product code SW490A), 4 x 4

Parallel (SW491A), 4 x 8 Serial

(SW492A), and 4 x 8 Parallel

(SW493A). These have four

“lettered” ports, labeled “A”

through “D,” and four or eight

“numbered” ports, labeled “1”

through “4” or “8.” By pressing

••••

1234

4x4 Manual

Matrix Switch

PORT

Share serial or parallel devices

among your computers at the

press of a button—without

breaking the bank.

KeyFeatures

MANUALMATRIXSWITCHES

the Switch’s touchpad keys, you

make and break connections

between these two types of ports.

Cabling is very straightforward

when you attach computers to the

numbered ports and peripheral

devices to the lettered ports. (See

the illustration on the next page.)

If you want to share eight devices

among four computers, you can

use slightly more complex cabling

to attach equipment to the

“opposite” type of port. Call Black

Box Technical Support if you have

any questions about how to cable

the Switch.

On the serial models of the

Switch, the numbered ports are

DB25 female connectors pinned

as DCE, while the lettered ports

are DB25 male connectors pinned

as DTE. The attached equipment

can communicate—synchronously

or asynchronously— at data rates

as high as 230 kbps on each port.

The Switch is transparent to data

format and flow control.

On parallel models of the

Switch, the numbered ports are

DB25 male and the lettered ports

are DB25 female. All of these

ports are bidirectional IEEE 1284

type; they support all 1284 modes,

including Compatibility (IBM PC

parallel compatible), Byte/Nibble,

ECP, and EPP. There is virtually no

“speed limit” on these ports—

attached equipment can

communicate as fast as it’s able to.

When you first plug in the

Switch, no port-to-port connections

will be in place and no LEDs

(except the front-mounted power

LED) will be lit. Press a Switch key

once to switch the corresponding

numbered port to lettered port A;

for example, if you press “3,”

you’ll connect port 3 to port A (and

the Switch will beep, and the LED

in column 3 and row A will light

up). Press that key repeatedly to

switch to port B, C, and D, and to

disconnect the numbered port

again.

Connections aren’t shared by

numbered ports, and connections

are never broken automatically.

Any connections in place when

power is lost are automatically

restored when power is regained.

NOTE: Signal direction for

external synchronous clocking is

nonstandard on the Serial Manual

Matrix Switches. If you need

external clock for your application,

call Black Box Technical Support.

Compliance: FCC Part 15 Subpart B

Class B, IC Class/classe B

Interface:

SW490A, SW492A: EIA/TIA

RS-232 serial, DCE on

numbered ports and DTE on

lettered ports;

SW491A, SW493A: Bidirectional

IEEE 1284 parallel, including

Compatibility (IBM PC parallel

compatible), Nibble/Byte, ECP,

and EPP modes

Serial Characteristics:

SW490A, SW492A: Transparent

to synchronous or

asynchronous protocol,

synchronous clocking, data

format, flow control, and full-

or half-duplex operation

Data Rate:

Serial: Transparent to data rates

up to 230 kbps;

Parallel: Transparent to any data

rate sustainable by the

attached devices

Maximum Distance:

SW490A, SW492A: 50 ft. (15.2 m)

to any attached device;

SW491A, SW493A: 20 ft. (6.1 m) to

any attached device

User Controls: All top-mounted:

SW490A, SW491A: (1) Four-key

membrane touchpad, one key

for each numbered (computer)

port;

SW492A, SW493A: (2) Four-key

membrane touchpads, one

key for each numbered

(computer) port

Indicators:

Visible:

(1) Front-mounted green LED

for power;

(1) Top-mounted red LED for

each combination of

lettered and numbered

(computer) ports:

SW490A, SW491A:

(16) arranged in a 4 x 4

matrix;

SW492A, SW493A:

(32) arranged in a 4 x 8

matrix;

Audible:

One-second tone to indicate

successful power-up;

Short beep to indicate that a

port has been switched

Connectors:

All rear-mounted:

(1) Barrel jack for power;

Numbered ports:

SW490A: (4) DB25 female;

SW491A: (4) DB25 male;

SW492A: (8) DB25 female;

SW493A: (8) DB25 male;

Lettered ports:

SW490A, SW492A:

(4) DB25 male;

SW491A, SW493A:

(4) DB25 female

Leads/Signals Supported:

SW490A, SW492A: Pin 7 (SGND)

held common; Pins 2 through

6, 8, 15, 17, 19, 22, and 24 (TD,

RD, RTS, CTS, CD, TC, RC,

SRTS, DTR, RI, and EXTC)

switched; note that on Switch

ports Pin 24 (EXTC) is a DCE

output and a DTE input;

SW491A, SW493A: All grounds

(Pins 18 through 25) held

common, all data and control

signals (Pins 1 through 17)

switched

Power: From utility-power (mains)

outlet, through wallmount

transformer and detachable

output cord, to rear-mounted

barrel jack:

Input: 115 VAC, 60 Hz;

Output: 12 VDC at up to

300 mA;

Consumption: 3.6 watts maximum

Temperature Tolerance:

32 to 122˚F (0 to 50˚C)

Humidity Tolerance:

40 to 90% noncondensing

Size: 3.3"H x 12.2"W x 8.3"D

(8.3 x 30.8 x 21 cm)

Weight:

SW490A: 3.9 lb. (1.8 kg);

SW491A: 3.8 lb. (1.7 kg);

SW492A: 4.4 lb. (2 kg);

SW493A: 4.2 lb. (1.9 kg)

PORT

••••

5678

PORT

4x4 Manual

Matrix Switch

••••

1234

Serial

printers

BC00901

cables

4 x 8 Serial

Manual Matrix

Switch

EVMBMC

cables

PCs with DB9 serial ports PCs with DB25 serial ports

EVMBSM

cables

EVMBSM

cables

lettered ports

numbered ports

Modems

Specifications

Just run your cables,

plug in the Switch,

and start connecting

users to resources

with the press of a

button.

Ordering Information

ITEM CODE

Manual Matrix Switches:

4 x 4 Serial.....................................................................................................................................................................................SW490A

4 x 4 Parallel..................................................................................................................................................................................SW491A

4 x 8 Serial.....................................................................................................................................................................................SW492A

4 x 8 Parallel..................................................................................................................................................................................SW493A

You might also need:

Serial cables (“xx” in product codes = length in feet):

For standard configuration (computers on numbered ports, devices on lettered ports):

Numbered Switch port to DB9 M computer serial port (DB25 M to DB9 F, straight)................................EVMBMC-00xx

Numbered Switch port to DB25 M computer serial port (DB25 M to DB25 F, straight)............................EVMBSM-00xx

Lettered Switch port to serial printer or similar DTE device (DB25 F to DB25 M, crossed), 6 ft. (1.8 m)...........BC00901

Lettered Switch port to modem or similar DCE device (DB25 F to DB25 M, straight)...............................EVMBSM-00xx

For reversed configuration (computers on lettered ports, devices on numbered ports):

Lettered Switch port to DB9 M computer serial port (universal null-modem cable), 6 ft. (1.8 m).......................BC01802

Lettered Switch port to DB25 M computer serial port:

Universal null-modem cable, 6 ft. (1.8 m) .....................................................................................................................BC01802

DB25 F to DB25 M null-modem cable, 6 ft. (1.8 m) .....................................................................................................BC00501

Numbered Switch port to serial printer or similar DTE device (DB25 M to DB25 M, straight).........ECN25C-00xx-MM

Numbered Switch port to modem or similar DCE device (DB25 M to DB25 M, tail-circuit),

specify length.....................................................................................................................................................................EYN255C

Parallel cables (“xx” in product codes = length in feet):

For standard configuration (computers on numbered ports, devices on lettered ports):

Numbered Switch port to computer (DB25 F to DB25 M)....................................................................................EQN201-00xx

Lettered Switch port to Centronics®F parallel-device port (DB25 M to 36-pin Centronics M) ..................EQN202-00xx

Lettered Switch port to MDR36 F parallel-device port (DB25 M to MDR36 M)..............................................EQN203-00xx

For reversed configuration (computers on lettered ports, devices on numbered ports):

Lettered Switch port to computer (DB25 M to DB25 M) ......................................................................................EQN200-00xx

DB25 F/F gender changer (attach one to each occupied numbered Switch port).....................................................FA412

Gender-changed numbered Switch port to Centronics F parallel-device port

(DB25 M to 36-pin Centronics M)..........................................................................................................................EQN202-00xx

Gender-changed numbered Switch port to MDR36 F parallel-device port

(DB25 M to MDR36 M) .............................................................................................................................................EQN203-00xx

Data-line surge protectors:

DB9.............................................................................................................................................................................................SP361A-R2

DB25 (parallel or serial)...............................................................................................................................................................SP360A

Centronics ......................................................................................................................................................................................SP516A

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