Black Box SW111A Manuale utente

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

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]

FEBRUARY 2000

SW111A

SW111AE

SW112A

SW112AE

SW115A

SW115AE

SW116A

SW116AE

Fallback Switch

(RS-232, V.35, or RS-530)

Loopback Switch (RS-232)

RS-232 FALLBACK SWITCH II

SD RD RTS DCD DTR

RS-232 LOOPBACK SWITCH

PWR LB

SD RD RTS DCD DTR

FCC INFORMATION

FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy and if not

installed and used properly, that is, in strict accordance with the manufacturer’s

instructions, may cause interference to radio communication. It has been tested

and found to comply with the limits for a Class A computing device in accordance

with the specifications in Subpart J of Part 15 of FCC rules, which are designed to

provide reasonable protection against such interference when the equipment is

operated in a commercial environment. Operation of this equipment in a

residential area is likely to cause interference, in which case the user at his own

expense will be required to take whatever measures may be necessary to correct the

interference.

Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from digital

apparatus set out in the Radio Interference Regulation of the Canadian Department of

Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par le ministère des Communications du Canada.

The Fallback Switch and the Loopback Switch are CE certified.

FALLBACK SWITCH AND LOOPBACK SWITCH

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de

que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que

sean recomendados por el fabricante.

7. El parato eléctrico debe ser montado a la pared o al techo sólo como sea

recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá

a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el aparato.

NOM STATEMENT

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización

del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los contactos y receptáculos donde salen del

aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas

de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea

usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

FALLBACK SWITCH AND LOOPBACK SWITCH

TRADEMARKS

All trademarks mentioned in this manual are acknowledged to be the property of

the trademark owners.

CONTENTS

1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Switch Capability Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4 Switches and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Alarming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6 “Smart” Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7 Manual Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.8 In-Band Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Power Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3 Disconnect Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.4 Connecting the ASCII Control Terminal . . . . . . . . . . . . . . . . . . . . 11

3.5 Connecting User Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 Switches 1, 2, and 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.2 Switch 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 Switches 5 and 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.4 Switches 7 and 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5. Console Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Terminal Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Main Command Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

CHAPTER 1: Specifications

1. Specifications

Interface—SW111A(E), SW112A(E): RS-232; SW115A(E): V.35;

SW116A(E): RS-530

Connectors—All: (1) 8-pin RJ-45; RS-232 and RS-530: (3) DB25 female;

V.35: (3) M/34 female

Leads Supported—1 through 25

Maximum Data Rate—Depends upon cabling

Switches—(1) 2-position mode selector

Indicators—All models: (1) SD, (1) RD, (1) CD, (1) DTR, (1) RTS; SW111A(E),

SW112A(E), SW116A(E): (1) pushbutton for A/B; SW115A(E): (1) pushbutton

for Loop/Normal

CE Approval—Yes

Energy Rate—6 VA

Receptacle—3-prong grounding

Power—A models: 100-120 V, 60 Hz; AE models: 200-240 V, 50 Hz

Size—1.6"H x 8.4"W x 10.8"D (4.1 x 21.3 x 27.4 cm)

Weight—4.8 lb. (2.2 kg)

FALLBACK SWITCH AND LOOPBACK SWITCH

2. Description

2.1 Introduction

The Fallback Switch is a standalone remotely controllable A/B switch for EIA

RS-232/V.24, V.35, or RS-530/422 circuits. You can switch via console command,

manual pushbutton, or automatically upon alarm. The Loopback Switch (SW112A

or SW112AE) is identical to the RS-232 Fallback Switch (SW111A or SW111AE)

except that the “B” switch connector has been replaced by an internal loopback

plug.

Both Switches include control-interface firmware that functions as the logical

bridge between a management console (any ASCII terminal) and the Fallback or

Loopback Switch module. The console connects to the Switch via 4-wire modular

cabling.

2.2 Switch Capability Summary

From the console, you can:

1. Determine A/B switch status of any interface.

2. Define alarms per interface.

3. Switch the circuit (Fallback Switch) or invoke loopback (Loopback Switch).

4. Configure autoswitch on alarm.

5. Disable front-panel control.

6. Establish or change the password (optional).

7. Access the HELP screen for all functions.

8. Access or set time and date.

You can also control address selection and A/B switching pushbutton control

manually at each Switch.

CHAPTER 2: Description

2.3 Connectors

Located on the rear of the Fallback Switch are three user data connectors

(“common,” “A,” and “B”) and one 8-pin modular jack for console control. The

user data connectors are DB25 female for RS-232 or RS-530, or M/34 female for

V.35.

The RS-232 Loopback Switch is identical to the RS-232 Fallback Switch, except

that it has an internal loopback plug instead of a “B” switch connector.

2.4 Switches and Indicators

A pushbutton is used to manually set the Fallback Switch to the desired position

(A or B). To prevent accidental switching, you must push the button and hold it

for several seconds for switching to take effect. An LED indicates the current

Fallback Switch position (regardless of whether you switch with the button or from

the console).

A pushbutton manually sets the Loopback Switch to the desired position (loop

or normal). To prevent accidental switching, you must push the button and hold it

for several seconds for switching to take effect. An LED lights when the Loopback

Switch has been set to loop back. The Loopback Switch will automatically switch to

normal upon power-up.

In both cases, five LEDs indicate lead status activity. For RS-232 switching, the

monitored leads are SD, RD, DCD, DTR, and RTS.

2.5 Alarming

The Fallback Switch supports console-controlled data circuit alarming on both the

“A” connector and the “B” connector (independent of switch position), while the

Loopback Switch supports alarming only on the “A” side. Each data line can be

programmed, through the console, to alarm on the following interface leads:

• SD, Send Data, present/absent

• RD, Receive Data, present/absent

• SCT, Serial Clock Transmit, present/absent

• SCR, Serial Clock Receive, present/absent

• RTS, Request to Send, high/low

• CTS, Clear to Send, high/low

FALLBACK SWITCH AND LOOPBACK SWITCH

• DCD, Data Carrier Detect, high/low

• DTR, Data Terminal Ready, high/low

The alarming can be used to alert the operator and, optionally, to automatically

switch to a backup link (Fallback Switch) or to a loopback or normal condition

(Loopback Switch). For example, loss of Carrier Detect on a Fallback Switch “A”

connector can trigger automatic switching to the “B” side, and return of Carrier

Detect on “A” can trigger automatic switching back to “A.”

In order for an alarm to be reported to the console, the condition causing the

alarm must be present for a user-definable period of time, the “Time to Alarm.”

After an alarm has been reported to the console, the clearing of that alarm is also

reported. The “clear” report is issued after the original alarm condition has been

clear for a user-definable period of time, the “Time to Clear.”

2.6 “Smart” Switching

The control firmware accepts switching commands from the console and relays

these commands to the Switch within the switch housing.

When switching has automatically occurred as a result of an alarm, the “Time to

Clear” becomes functionally a “Time to Ignore” (although the console

nomenclature does not change). This “Ignore” function takes effect immediately

upon initial alarm detection and switching. The alarm for the time in question is

artificially cleared (regardless of its actual status) and, for the “Time to Clear”

duration, all activity on that line is ignored. If any alarm conditions are present

when the timer times out, they are treated as if they had just occurred (and the

“Time to Alarm” begins its function).

2.7 Manual Switching

A front-panel push button lets you manually toggle the Fallback Switch between

the

“A” position and the “B” position. To prevent accidental switching, you must press

the button for several seconds to enable the switching.

A front-panel push button lets you manually toggle the Loopback Switch between

the “normal” position and the “loopback” position. To prevent inadvertent operation,

you must press the button for several seconds to enable the switching.

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