Black Box SHM-FSK Manuel utilisateur

Protects data against

crosstalk and outside

noise interference.

Point-to-point or

multipoint operation,

full- or half-duplex.

Rates up to 9600 bps.

Uses Fre uency Shift

Keying modulation.

Provides highly

reliable, continuous

data transmission.

Optional modules

available for 2-wire

RS-485 and 4-wire

RS-422.

he Short-Haul Modem-FSK

is a private-line modem that

supports 9600-bps half- and full-

duplex RS-2 2 operation over a

single dedicated wire pair and

across sliding contacts. The

modem uses pure Frequency Shift

Keying (FSK) modulation at high

carrier frequencies (100 kHz,

106.5 kHz to 150 kHz, 156.5 kHz).

These high frequencies make the

modem particularly immune to

crosstalk and outside noise

interference, so you get highly

reliable, continuous data

transmission over distances of

several miles in harsh industrial

environments.

Extend communications over a single pair—

even in the noisiest environments!

KeyFeatures

SHORT-HAULMODEM-FSK(SHM-FSK)

The modem operates in point-

to-point or multipoint applications.

For multipoint applications, the

modem can be operated with

one master unit and up to eight

remote units.

The master unit (ME840A-M)

transmits at 106.5/100 kHz

(Space/Mark) and receives at

156.5/150 kHz.

The remote slave unit

(ME840A-S) transmits at 156.5/

150 kHz and receives at 106.5/

100 kHz.

Since RS-485 interfaces are

common in industrial applications,

we also offer a 2-wire RS-485

module (MD 17) and a 4-wire

RS-422 module (MD 18). Simply

plug the module into the modem’s

RS-2 2 connector and you’ve got

your extra connection.

The modem has several

diagnostic LEDs: Carrier Detect,

Receive Data, Transmit Data,

Loopback, and Power.

The modem interface is

DTE/DCE jumper selectable, so

it’s easy to configure to suit your

application. The default configur-

ation for the Modem is DCE. To

change this configuration, just

move the jumpers on blocks P1

and P2 (located directly behind

the DB25 RS-2 2 connector on the

rear panel).

The modem also includes

jumpers for cofiguring carrier

detect, chassis ground, receiver

gain, and transmit power.

Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: [email protected]

Black Box Corporation.

11/21/200 #18966

Data Format:

RS-2 2C (RS-485 2-wire with

optional MD 17 module, RS-422

4-wire with optional MD 18

module)

Distance (Maximum): 48,000 ft.

(146 0.4 m) on single twisted pair

Operation: Full-duplex or half-

duplex controlled carrier, serial

asynchronous data

Mode: Point-to-point or multipoint

with RS-2 2

Modulation: Frequency shift keying

(FSK); carrier signal inductively

and capacitively isolated

Speed (Maximum): 9600 bps

Interface: DTE/DCE jumper

selectable

Connectors: (1) DB25 F for RS-2 2C

(RS-422 and RS-485 modules),

(1) 2-position terminal block for

carrier, (1) 2-position terminal

block for power

Operating Temperature:

2 to 140°F (0 to 60°C)

Power: 120 VAC, 60/50 Hz @

9.6 watts or 24 VDC at 10 watts

Si e: 1.75"H (1U) x 7.5"W x 10.5"D

(4.4 x 19.1 x 26.7 cm)

Weight: 4.5 lb. (2 kg)

Specifications

Ordering Information

ITEM CODE

Short-Haul Modem-FSK (SHM-FSK)

Master.................................................................ME840A-M

Slave......................................................................ME840A-S

Optional Modules

2-Wire RS-485..........................................................MD 17

4-Wire RS-422 .........................................................MD 18

Recogni e any of these

situations?

• You wait more than 0

minutes to get through to a

vendor’s tech support.

• The so-called “tech” can’t

help you or gives you the

wrong answer.

• You don’t have a purchase

order number and the tech

refuses to help you.

• It’s 9 p.m. and you need help,

but your vendor’s tech

support line is closed.

According to a survey by Data

Communications magazine, 90%

of network managers surveyed

say that getting the technical

support they need is extremely

important when choosing a

vendor. But even though network

managers pay anywhere from 10

to 20% of their overall purchase

price for a basic service and

support contract, the technical

support and service they receive

falls short of their expectations—

and certainly isn’t worth what

they paid.

At Black Box, we guarantee

the best value and the best

support. You can even consult

our Technical Support Experts

before you buy if you need help

selecting just the right component

for your application.

Don’t waste time and

money—call Black Box today.

WhyBuyFromBlackBox?ExceptionalValue.ExceptionalTechSupport.Period.

he SHM-FSK performs data

communication by converting

digital signals to modulated high-

frequency sine-wave carrier

signals. These converted signals

can be transmitted across much

longer distances with greater

noise immunity on wires than

square-wave digital signals. The

digital space and mark (0 and 1)

are converted in the transmitter

to carrier signals that have two

slightly different frequencies. The

two frequencies are identified by

the receiver and reconverted to

the digital signals.

The ME840A-M and ME840A-

S support RS-2 2 point-to-point

and multipoint communications.

Optional modules support point-

to-point. They send data

synchronously, and they’re

transparent to protocol and to

data rates up to 9600 baud.

TechnicallySpeaking

Ce manuel convient aux modèles suivants

Table des matières

Autres manuels Black Box Modem

Black Box

Black Box MicroNTU G.703 AC Series Manuel utilisateur

Black Box

Black Box 202T Manuel utilisateur

Black Box

Black Box Compact mDSL Modem Manuel utilisateur

Black Box

Black Box ME0004C-G703 Manuel utilisateur

Black Box

Black Box MDS932C-1 Manuel utilisateur

Black Box

Black Box ME0006A-10BT Manuel utilisateur

Black Box

Black Box MAY 1994 Manuel utilisateur

Black Box

Black Box High Speed SHM-B Async Manuel utilisateur

Black Box

Black Box MDR29x Manuel utilisateur

Black Box

Black Box MC119A Manuel utilisateur

Black Box

Black Box MDR100A-R4 Manuel utilisateur

Black Box

Black Box MT618A-ST-R2 Manuel utilisateur

Black Box

Black Box ME475A-R2 Manuel utilisateur

Black Box

Black Box Industrial Control MDU20G-918 Manuel utilisateur

Black Box

Black Box MD1621A Manuel utilisateur

Black Box

Black Box ME800A-PLUS-R2 Manuel utilisateur

Black Box

Black Box ME800A Manuel utilisateur

Black Box

Black Box MD1650A-JP Manuel utilisateur

Black Box

Black Box LES1204A-3G Manuel utilisateur

Black Box

Black Box MDS932AE-10BT-R2 Manuel utilisateur

Black Box

Black Box ME260A Manuel utilisateur

Black Box

Black Box MDR100A-R4 Manuel utilisateur

Black Box

Black Box MD885A-R2 Manuel utilisateur

Black Box

Black Box SHM-NPR/RJ-45 Series Manuel utilisateur

Manuels Modem populaires d'autres marques

Davicom

Davicom DM562AP Manuel utilisateur

EpiValley

EpiValley TATA indicom SXC-1080 Manuel utilisateur

Zte

Zte WiMAX Manuel utilisateur

Intelimax

Intelimax MA-2060 Manuel utilisateur

SMC Networks

SMC Networks D3CM1604V Manuel d'utilisation et d'entretien

Telstra

Telstra Wi-Fi 4G Advanced Pro X Manuel utilisateur

Thrane&Thrane

Thrane&Thrane imarsat EXPLORER 300 Manuel utilisateur

Samsung

Samsung AceLink SAM-335A Manuel utilisateur

Enfora

Enfora Enabler-G Guide de configuration rapide

iRZ

iRZ ATM2-232 Manuel utilisateur

Zhone

Zhone 6310 Manuel utilisateur

Paradyne

Paradyne Hotwire 7976 Manuel utilisateur

US Robotics

US Robotics 3453C Manuel utilisateur

MaxTech

MaxTech Plug & Play Internal Voice/FAX/Data/SVD... Manuel utilisateur

Zte

Zte MF823 Manuel utilisateur

Four-Faith

Four-Faith F1403 Manuel utilisateur

Sierra Wireless

Sierra Wireless AIRLINK MP595W Manuel utilisateur

Gemtek

Gemtek WiMAX WIXFBR-103 Manuel utilisateur