Black Box IC496A-R2 Manual de usuario

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]

OCTOBER 2001

IC496A-R2 IC496AE-R2

IC497A IC497AE

IC498A IC498AE

IC499A IC499AE

SCSI Repeaters

SCSI REPEATER

FCC/IC RFI STATEMENTS

FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA

RADIO-FREQUENCY INTERFERENCE STATEMENTS

Class B Digital Device. This equipment has been tested and found to comply with

the limits for a Class B computing device pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful

interference in a residential installation. However, there is no guarantee that

interference will not occur in a particular installation. This equipment generates,

uses, and can radiate radio frequency energy, and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. If this equipment does cause harmful interference to radio or

telephone reception, which can be determined by turning the equipment off and

on, the user is encouraged to try to correct the interference by one of the following

measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

• Consult an experienced radio/TV technician for help.

Caution:

Changes or modifications not expressly approved by the party

responsible for compliance could void the user’s authority to operate

the equipment.

To meet FCC requirements, you should use shielded cables and power cords to

connect this device to a personal computer or other Class B certified device.

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 Industry Canada.

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 Industrie Canada.

SCSI REPEATERS

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 aparato 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.

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.

EUROPEAN UNION DECLARATION OF CONFORMITY

This equipment complies with the requirements of the European EMC Directive

89/336/EEC.

NOM STATEMENT, EU DECLARATION OF CONFORMITY

SCSI REPEATERS

Contents

Chapter Page

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

2. Introduction ............................................................................................... 8

2.1 Overview .............................................................................................. 8

2.2 Features ............................................................................................... 9

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

3.1 The Complete Package ..................................................................... 10

3.2 Placement .......................................................................................... 10

3.3 The Installation Procedure .............................................................. 11

3.3.1 Attaching the AC Power Supply ............................................. 11

3.3.2 Connecting the SCSI Repeater to the SCSI Bus ................... 11

3.3.3 Ensuring Proper Termination ............................................... 12

3.3.4 Powering Up the System ........................................................ 12

4. Operation and Troubleshooting ............................................................ 13

4.1 Monitoring the LED ......................................................................... 13

4.2 Contacting Black Box ....................................................................... 13

4.3 Shipping and Packaging ................................................................... 14

Appendix A: Pinouts ....................................................................................... 15

A.1 50-Pin Narrow Single-Ended SCSI Ports

(IC496 and IC497 Models) ............................................................ 15

A.2 68-Pin Wide Single-Ended SCSI Ports (IC498 Models) .................. 16

A.3 68-Pin LVD SCSI Ports (IC499A) ..................................................... 17

A.4 Power Connector .............................................................................. 18

Appendix B: SCSI Technical Information .................................................... 19

B.1 SCSI Basics ......................................................................................... 19

B.2 SCSI Installation Tips ....................................................................... 21

B.3 SCSI Signal Descriptions .................................................................. 22

B.4 Device and Distance Support By Bus Type ...................................... 23

CHAPTER 1: Specifications

1. Specifications

Compliance — CE; FCC Part 15 Subpart J Class B, IC Class/classe B

Standards — ANSI X3.131 and X3T9.2

Interfaces — IC496 and IC497 models: Narrow SCSI-1 and SCSI-2

single-ended;

IC498 models: Wide SCSI-2 and Ultra SCSI (SCSI-3)

single-ended;

IC499 models: Wide Ultra2 SCSI LVD

Protocol — Synchronous or asynchronous

Maximum

Data Rate — IC496 and IC497 models: 20 MBps;

IC498 models: 40 MBps;

IC499 models: 80 MBps

Maximum

Signal Delay — IC499 models: 10 ns;

All other models: 15 ns

Maximum

Signal Slew — 3 ns

Maximum

Distance — IC496 and IC497 models:

From each port to the most distant directly attached

device:

6 m (19.7 ft.) at 5 MBps,

3 m (9.8 ft.) at 10 MBps, or

1.5 m (4.9 ft.) at 20 MBps;

Up to 3 units can be installed on one bus to extend

total bus length up to 24 m (78.7 ft.), 12 m (39.4 ft.),

or 6 m (19.7 ft.) respectively;

SCSI REPEATERS

Maximum

Distance (cont’d) — IC498 models:

From each port to the most distant directly attached

device:

6 m (19.7 ft.) at 10 MBps,

3 m (9.8 ft.) at 20 MBps or (with four or fewer

devices) at 40 MBps, or

1.5 m (4.9 ft.) with more than four devices at

40 MBps;

Up to 3 units can be installed on one bus to extend

total bus length up to 24 m (78.7 ft.), 12 m (39.4 ft.),

or 6 m (19.7 ft.) respectively;

IC499 models:

Point-to-point (only two other devices on the bus):

82 ft. (25 m) from each port to each directly

attached device;

Multipoint (more than two other devices on the bus):

39.4 ft. (12 m) from each port to the most distant

directly attached device;

Up to 2 units can be installed on one bus to extend

total bus length up to 246 ft. (75 m) or 118 ft. (36 m)

respectively

SCSI ID — None required

Termination — Active internal or external (user-selectable)

Internal Terminator

Power — 1 amp; internal resettable fuse will provide 5 VDC at

1 amp

User Controls —(2) Side-mounted slide switches: Internal vs. external

termination

Indicator — (1) Unlabeled Power/Activity LED

Connectors — All models: (1) 5-pin mini-DIN female power jack;

IC496 models: (2) 50-pin Centronics®female;

IC497 models: (2) Micro D50 (50-pin high-density)

female;

IC498 models and IC499A: (2) Micro D68 (68-pin high-

density) female

CHAPTER 1: Specifications

Power — IC496A-R2, IC497A, and IC498A:

From wallmount power supply:

Optimal Input: 115 VAC, 60 Hz;

Input Range: 103.5 to 126.5 VAC, 48 to 65 Hz;

Input Current Rating: 0.25 amps;

Output: 12 VDC at up to 1 amp;

IC496AE-R2, IC497AE, and IC498AE:

From desktop power supply:

Optimal Input: 220 VAC, 50 Hz;

Input Range: 198 to 242 VAC, 48 to 65 Hz;

Input Current Rating: 0.25 amps;

Output: 12 VDC at up to 1 amp;

IC499A:

From wallmount power supply:

Optimal Input: 115 VAC, 60 Hz;

Input Range: 103.5 to 126.5 VAC, 48 to 65 Hz;

Input Current Rating: 0.25 amps;

Output: 6 to 12 VDC at up to 1.3 amps

IC499AE:

From desktop power supply:

Optimal Input: 230 VAC, 50 Hz;

Input Current Rating: 110 mA

Output: 12 VDC at up to 1 amp

MTBF — 50,000 hours

Temperature

Tolerance — 32 to 131˚F (0 to 55˚C)

Humidity

Tolerance — Up to 90% noncondensing

Size — 1.1"H x 3.4"W x 4.7"D (2.8 x 8.6 x 11.9 cm)

Weight — 1 lb. (0.5 kg)

SCSI REPEATERS

2. Introduction

NOTE

If you’re not very familiar with how SCSI works or with the

characteristics of its different varieties, please read the technical

information in Appendix B. It might help you (a) confirm that you have

the proper Repeater and (b) prevent installation and operation problems.

2.1 Overview

Your new SCSI Repeater gives you the freedom to extend the distance of any LVD

SCSI bus (IC499 models) or single-ended SCSI bus (all other models) beyond the

standard distance limits. It’s a low-cost data repeater that plugs in-line on a SCSI

chain, regenerating and reconditioning the data signal, doubling the distance your

data can travel, and giving you the flexibility to install your SCSI peripherals

wherever you need them most (see Figure 2-1).

Figure 2-1. One SCSI Repeater doubles the distance of a SCSI bus.

In fact, you can link as many as three IC496, IC497, or IC498 model SCSI

Repeaters to a single SCSI-1, SCSI-2, or Ultra SCSI (SCSI-3) bus in order to place

disk drives, tape peripherals, CD-ROM drives, or laser printers up to 24 m (78.7 ft.)

away from the host computer (see Figure 2-2 on the next page). Or you can link as

many as two SCSI LVD Repeaters (IC499 models) to an Ultra2 SCSI bus to place

one such devices as much as 246 ft. (75 m) from the host computer, or two or

more such devices as much as 118 ft. (36 m) from the host computer.

NOTE

The maximum distance attainable in an IC496, IC497, or IC498 model

SCSI Repeater system depends on whether the bus is narrow or wide,

how many devices are on it, and how high the data rate is. See

Section 3.3.2 and Section B.4.

At 5 MBps, single-ended SCSI bus extended to as

much as 12 m (39.4 ft.) with a single Repeater

Multipoint LVD SCSI bus extended to as

much as 24 m (78.7 ft.) with a single Repeater

Computer with

SCSI host adapter

SCSI Repeater

SCSI

storage

devices

Figure 2-2. Daisychain SCSI Repeaters for more distance (DOS/Windows®

drive-letter assignments shown).

Three basic types of the SCSI Repeater are available. One supports “narrow” (8-bit)

single-ended SCSI devices, the second supports “wide” (16-bit) single-ended SCSI

devices, and the third supports low-voltage differential (LVD) SCSI devices. All

three Repeater types can double the distance of your SCSI bus.

2.2 Features

• Doubles SCSI-bus distance.

• Maximum data rate of 20 (narrow single-ended), 40 (wide single-ended), or

80 (LVD) Mbps.

• Compatible with synchronous and asynchronous applications.

• User-installable.

• Transparent to SCSI controllers and peripherals.

• Internal active bus termination.

• No software required.

• IC496 and IC497 models are compatible with SCSI-1 and SCSI-2; IC498 models

are compatible with SCSI-2 and Ultra SCSI (SCSI-3); and IC499 models are

compatible with Ultra2 SCSI.

• Conforms to ANSI X3.131 and X3T9.2 SCSI specifications.

CHAPTER 2: Introduction

Multipoint LVD SCSI bus extended to as much as 36 m

(118.1 ft.) or single-ended SCSI bus extended to as much

as 18 m (59.1 ft.) with two Repeaters—a third Repeater

could extend the single-ended range to the maximum

24 m (78.7 ft.)

Tape

drive

(D:)

Zip®

drive

(B:)

Computer with

3.5" drive (A:)

and hard drive

(C:)

Tape

drive (E:)

DVD-ROM

drive (G:)

CD-ROM

tower

(F:)

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