Black Box USB Director RS-232 Bedienungsanleitung

MARCH 1998

ME001A

ME001A-E

RS-232 Line Booster

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]

CHASSIS GROUND

TX DATA

RX DATA

RTS

CTS

DSR

SIGNAL GROUND

+V (9-15VDC)

-V (9-15VDC)

TX CLK (DCE)

RX CLK

DTR

TX CLK (DTE)

EXTERNAL POWER

SERIAL CABLE BOOSTER

RS-232 LINE BOOSTER

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

This equipment generates, uses, and can radiate radio frequency

energy and if not installed an 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 required 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 édicté par

Industrie Canada.

RS-232 LINE BOOSTER

Contents

1. Specifications .................................................4

2. Introduction...................................................5

3. Installation......................................................8

RS-232 LINE BOOSTER

1. Specifications

Protocol — Asynchronous/synchronous

Speed — Transparent

Operation — Transparent

Interface — RS-232/CCITT V.24

Connectors — (1) male DB25P connects to DCE;

(1) female DB25S connects to DTE

Power — ME001A: 120 VAC ± 10%, 60 Hz,

18 watts;

ME001A-E: 100–240 VAC,

50–60 Hz, 0.2A

Size — 1.1"H x 3.5"W x 4.5"D

(2.8 x 8.9 x 11.4 cm)

Weight — 0.4 lb. (0.2 kg)

RS-232 LINE BOOSTER

2. Introduction

The RS-232 Line Booster doubles the length of an

RS-232 cable by actively receiving and re-transmitting

twelve of the most common signal lines of the RS232-C

interface. The RS232-C specifications state that the

maximum cable length is limited to 50 feet. In actual

operation (depending on environmental conditions),

you may be able to operate with as much as 100-150

feet of cable. The Line Booster doubles the maximum

cable length if the environmental conditions are

similar over the entire cable and the Booster is in

the center of the cable length.

Under these same conditions, the signal to noise

ratio is halved when using the Line Booster. The

unit is data and data format transparent. It can be

powered from the interface (Pins 9 and 10) or from

its detachable power supply. The lines supported and

the direction of the signal flow are summarized in

Figure 2-1.

RS-232 LINE BOOSTER

The Line Booster has one DIP switch. At this time,

the DIP switch has no function—it is for future

enhancements.

1 Chassis Gnd. 1

2 TX Data 2

3 RX Data 3

4 RTS 4

5 CTS 5

6 DSR 6

7 Sig. Gnd 7

8CD 8

9 +V (9-15 VDC) 9

10 -V (9-15 VDC) 10

15 TX Clk (DCE) 15

17 RX Clk 17

20 DTR 20

21 SQ 21

22 RI 22

24 TX Clk (DTE) 24

DB25P DB25S

Male Female

External Power

RS-232 LINE BOOSTER

The Line booster has a male (to DCE) and female

(from DTE) connector with bulkhead (female

screwlock) hardware. If either of the devices being

interconnected has 100 mA of test power on Pins 9

and 10, the unit can be powered from the interface.

If not, a detachable wallmount power supply is

provided and the installation must provide for AC

power to the power supply. The female connector

must be connected to the cable attached to the

equipment sending data to the DCE on Pin 2.

RS-232 LINE BOOSTER

3. Installation

Connect the cable from your modem (or other DCE

device) to the DCE side of the Line Booster. Connect

the cable from your computer, terminal or printer

(or other DTE device) to the DTE side of the Line

Booster.

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

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