Black Box 202T Manuale utente

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]

MAY 2001

MD845A-R2

Modem 202T

FCC AND IC RFI INFORMATION

FEDERAL COMMUNICATIONS COMMISSION

AND

INDUSTRY CANADA

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 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.

MODEM 202T

FCC REQUIREMENTS FOR

TELEPHONE-LINE EQUIPMENT

1. The Federal Communications Commission (FCC) has established rules which

permit this device to be directly connected to the telephone network with

standardized jacks. This equipment is designed to operate only on dedicated

phone lines or wires. Do not connect to dial-up lines, coin lines, party lines, or

lines with dial tones.

2. If this device is malfunctioning, it may also be causing harm to the telephone

network; this device should be disconnected until the source of the problem

can be determined and until the repair has been made. If this is not done, the

telephone company may temporarily disconnect service.

3. If you have problems with your telephone equipment after installing this

device, disconnect this device from the line to see if it is causing the problem.

If it is, contact your supplier or an authorized agent.

4. The telephone company may make changes in its technical operations and

procedures. If any such changes affect the compatibility or use of this device,

the telephone company is required to give adequate notice of the changes.

5. If the telephone company requests information on what equipment is

connected to their lines, inform them of:

a. The telephone number that this unit is connected to.

b. The FCC registration number.

Item (b) can be found on the unit’s FCC label.

6. In the event of an equipment malfunction, all repairs should be performed by

your supplier or an authorized agent. It is the responsibility of users requiring

service to report the need for service to the supplier or to an authorized

agent.

CERTIFICATION NOTICE FOR EQUIPMENT USED IN CANADA

CERTIFICATION NOTICE FOR

EQUIPMENT USED IN CANADA

The Industry Canada label identifies certified equipment. This certification means

that the equipment meets certain telecommunications-network protective,

operation, and safety requirements. Industry Canada does not guarantee the

equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be

connected to the facilities of the local telecommunications company. The

equipment must also be installed using an acceptable method of connection. In

some cases, the company’s inside wiring associated with a single-line individual

service may be extended by means of a certified connector assembly (extension

cord). The customer should be aware that compliance with the above conditions

may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized maintenance

facility—in this case, Black Box. Any repairs or alterations made by the user to this

equipment, or equipment malfunctions, may give the telecommunications

company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground

connections of the power utility, telephone lines, and internal metallic water pipe

system, if present, are connected together. This precaution may be particularly

important in rural areas.

CAUTION:

Users should not attempt to make such connections themselves, but

should contact the appropriate electric inspection authority, or

electrician, as appropriate.

MODEM 202T

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.

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.

MODEM 202T

TRADEMARKS USED IN THIS MANUAL

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

trademark owners.

CONTENTS

Contents

Chapter Page

1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3. Modem Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Full Duplex 4-Wire Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Half-Duplex 2-Wire Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3 Half-Duplex 4-Wire Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.4 Simplex or Bits Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.5 Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4. Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Connections Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 RS-232 Serial Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.4 Operating Mode Selection and Wiring . . . . . . . . . . . . . . . . . . . . . . . 15

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

5.1 Component Locator Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Baud Rate Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.3 Character Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.4 Handshake Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.5 Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Appendix. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

A.1 Calling Black Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

A.2 Shipping and Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

MODEM 202T

1. Specifications

Range: Up to 20 miles on unloaded lines, depending upon line characteristics.

Unlimited on loaded lines.

Operating Frequency: 1200/2200 Hz (Bell 202 or 1300/2100 CCITT V.35) FSK

(Frequency Shift Key)

Data Rates: 300, 600, or 1200 baud half- or full duplex up to 1200 baud simplex

Handshake Modes: DataSense (DSCC) or RTS line

Enclosure: Standard NEMA 1; 18-gauge steel with mounting flanges

Temperature Tolerance: -4 to +158°F (-20 to +70°C)

Indicators: (4) LEDs: Data Out, Data In, Carrier, Power

Connectors: (2) terminal blocks, (1) DB9 female

Power required: Input: 11 to 18 volts DC at a minimum of 200 ma. External

wallmount power supply provided for 110 VAC nominal.

Size: 1.5"H x 5"W x 9"D (3.8 x 12.7 x 22.9 cm) over mounting flanges

Mounting: Hole pattern 1⁄4inch diameter located on rectangle 8.3 by 2.8 inches

CHAPTER 2: Introduction

2. Introduction

The Modem 202T is a Bell 202 (CCITT V.23 optional) voice-band, 1200-baud

modem. Use it on private, leased, un-switched telephone lines or any dedicated 2-

or 4-conductor wire (twisted or untwisted, shielded or unshielded). The Modem

has a range of up to 20 miles (32.2 km) on any ordinary wire pairs or unlimited on

“loaded” telephone company voice-grade (VG-6) leased lines.

The Modem 202T can operate without handshake lines using the proprietary

DataSense (DSCC) microprocessor firmware. This feature detects and buffers

incoming RS-232 data to allow the assertion and stabilization of the FSK carrier

before transmitting the buffered characters.

The nominal operating supply voltage for the Modem 202T is 12 VDC via a

2-conductor screw terminal power connector.

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