Black Box FST, MST User Manual

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®

© Copyright 1998. All rights reserved.

Black Box Corporation.

Supports asynchronous

transmission up to 19.2 Kbps.

Drives data up to 2 miles

(3 km) over multimode fiber.

Operates in full- or half-

duplex mode.

Configurable for

continuous or controlled

carrier.

Includes a handy

DCE/DTE switch.

Needs no external power.

W

hen you need to connect

full- or half-duplex async
computers and terminals,
choose the Async Fiber Optic
Mini Modem. A pair of these
modems can drive data over
multimode fiberoptic cable up
to 2 miles (more than 3 km) at
data rates up to 19.2 Kbps.

Special circuitry allows the
modem to operate without
external power, by deriving
ultra-low power from the DTE
data and control signals on the
interface.

Two models are available:

• Async Fiber Optic Mini

Modem with (2) fiberoptic
ST connectors and (1) DB25
female connector (part
number ME605A-FST)

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Connect an async computer to an async terminal via a pair of
Async Fiber Optic Mini Modems.

Complete async
modem functionality
in an ultra-mini
package that requires
no external power.

Typical Application

• Async Fiber Optic Mini
Modem with (2) fiberoptic
ST connectors and (1) DB25
male connector (part
number ME605A-MST)

And you can configure the
modem for continuous or
controlled carrier to suit your
application.

Key Features

Setting the modem for DCE
or DTE operation is a breeze,
too. Simply move the handy
DCE/DTE switch to the
desired position.

For proper operation,
remember that modems must
be used in pairs.

Async Fiber Optic Mini Modem

®

BLACK

BOX

The World’s Source for Connectivity

SM

2

Switch-selectable DTE/DCE

The Async Fiber Optic Mini
Modem features a switch­selectable DTE/DCE option.
This allows operation as DTE,
for connection to another
DCE such as a multiplexor
port, eliminating the need for
a cross cable.

Continuous or switched
operation

The carrier can be strapped
for either continuous
operation or switched
operation, controlled by the
RTS signal, for transfer of a
control signal end-to-end.

Specifications

Speed — Up to 19.2 Kbps
Distance — Up to 2 miles

(3 km) over multimode
fiberoptic cable

Temperature — 32 to 122° F

(0 to 50° C)

Humidity — Up to 90%,

noncondensing

Pulse Width Distortion —

Less than 25%

Transmission Line — Duplex

optical cable

Transmission Mode —

Asynchronous, full- or
half-duplex

Transmission Controls —

Carrier constantly on or
controlled by RTS

Technically Speaking

Ordering Information

This information will help you place your order quickly.

PRODUCT NAME ORDER CODE

Async Fiber Optic Mini Modem—FST..............ME605A-FST

Async Fiber Optic Mini Modem—MST...........ME605A-MST

Micro-mini modem connects
an async computer to an async
terminal without external
power.

Optical Output Levels —

-28 dBm into 100/140 fiber;

-32 dBm into 62.5/125 fiber;

-36 dBm into 50/125 fiber

Receiver Sensitivity —

-45 dBm

Operating Wavelength —

850 nm

Indicators — (1) Data

Transmit LED

Connectors — ME605A-FST:

(1) DB25 female, (2) ST;
ME605A-MST: (1) DB25
male, (2) ST

Power — Derives ultra-low

power from the DTE data
and control signals

Size — 0.7"H x 2.1"W x 3.1"D

(1.8 x 5.3 x 7.8 cm)

Weight — 1.3 oz. (36 g)

For these and other components...

Call our expert Technical Support Staff for all your Modem
needs. They’ll help you find the best equipment for your
application.

2

Async

Computer

Async

Terminal

ME605A

ME605A

Multimode

Fiberoptic Cable