Black Box SHM-NPR Series Bedienungsanleitung

MARCH 1997

ME6100A-F

ME6100A-M

ME6101A-F

ME6101A-M

ME6102A-F

ME6102A-M

Async SHM-NPR

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]

Async

SHM-NPR

ASYNC SHM-NPR

TRADEMARKS

All applied-for and registered trademarks are the property

of their respective owners.

ASYNC SHM-NPR

CONTENTS

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

2. Introduction . . . . . . . . . . . . . . . . . . . . . . . .7

2.1 Description . . . . . . . . . . . . . . . . . . . . .7

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

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

ASYNC SHM-NPR

1. Specifications

Transmission Mode — Asynchronous, full or

half duplex

Transmission Line — 4-wire unconditioned

telephone line (two twisted pairs)

Data Rates — Up to 19,200 bps

Transmission Level — -6 dBm

Transmission Controls — DCD (Circuit 109) turns

on after recognizing the receive signal from the

line; CTS (Circuit 106) turns on 1 or 12 msec

(selectable) after the terminal raises RTS

(Circuit 105)

NOTE

To ensure proper operation, the equipment connected to

the SHM-NPR should provide at least one of the following

signals: RTS (Circuit 105) or DTR (Circuit 108.2).

Transmission Range — 2 miles (3.2 km) on 24 AWG

wire at all speeds up to 19,200

ASYNC SHM-NPR

Terminal Interface — EIA RS-232C/CCITT V.24,

integral 25-pin connector, choice of male or

female

Telephone Line Interface — 5-screw (4-wire and

ground) connector block with cable strain relief

inside plastic cover

Temperature — 32 to 122 °F (0 to 50 °C)

Humidity — Up to 95%, non-condensing

Power — None required, uses ultra-low power from

the EIA RS-232/CCITT V.24 data and control

signals

Size — 0.9”H x 2.1”W x 4.3”D (2.2 x 5.3 x 11 cm)

Weight — 3.3 oz. (90 g)

ASYNC SHM-NPR

2. Introduction

2.1 Description

The Async SHM-NPR is used for local data

distribution, connecting full- or half-duplex

asynchronous terminals to computers. A pair

of modems ensures integrity of data transmission,

over unconditioned 4-wire telephone lines, for

distances of up to 2 miles (3.2 km).

The SHM-NPR is a high-speed synchronous

modem operating at 76.8 Kbps. The async-to-sync

conversion is performed by over-sampling, allowing

for asynchronous data transmission at data rates up

to 19,200 bps. This design results in a unit that is

insensitive to polarity of wiring (no need to observe

“+” and “-” on the twisted pairs), and is therefore

simple to install and maintain.

ASYNC SHM-NPR

The SHM-NPR features a DCE/DTE switch. This

allows it to operate as a DTE in order to connect to

another DCE, such as a multiplexor port, without

requiring a cross cable. The carrier can be strapped

for either continuous operation (point-to-point

applications) or for switched operation, controlled

by the RTS signal (multi-point applications). Delay

between RTS and CTS is strap-selectable to 1 or

12 msec.

The low transmit level minimizes crosstalk onto

adjacent circuits within the same cable. Data is

transmitted and received at a balanced impedance,

ensuring excellent immunity to circuit noise.

Additionally, the SHM-NPR is coupled to the

telephone line through isolation transformers

which, in conjunction with electronic circuitry,

protect against AC or DC overvoltages.

Innovative circuitry design allows the SHM-NPR

to operate without connection to the main supply,

by using ultra-low power from the standard EIA

RS-232/ITU V.24 data and control signals. To ensure

proper operation, the equipment connected to the

SHM-NPR should provide at least one of the

following signals: RTS (Circuit 105) or DTR

(Circuit 108.2).

ASYNC SHM-NPR

2.2 Features

• Insensitive to wire polarity

• Asynchronous transmission

• Up to 19,200 bps

• Full- or half-duplex

• Point-to-point or multipoint

• Transmission range of up to 2 miles (3.2 km)

• DCE/DTE switch

• Strain relief for line cable

• Lightning-protected

• No AC power required

• Easy to install

• Compact, lightweight

ASYNC SHM-NPR

3. Installation

Installation of the Async SHM-NPR is simple

and straightforward. Follow these steps:

1. Separate the two parts of the plastic cover by

pressing the marked places on the side, starting

at the cable end.

2. Connect 4-wire telephone line to the screw

terminal block: transmit pair to “XMT” and

receive pair to “RCV.” To connect the cable

shield, a ground is provided.

3. Strap the modem according to the strapping

diagram (Figure 3-1) and the strap-selection

table (Table 3-1).

4. To close the unit, simply press the two halves

of the cover together.

5. Plug the modem directly into the 25-pin

connector of the terminal or computer port,

and fasten with the screws on each side of the

connector.

ASYNC SHM-NPR

Table 3-1. Strap Selection.

Strap/Switch Identity Function Position Factory Setting

DCE/DTE Selects SHM-NPR DCE DCE

interface DTE

Carrier Selects carrier On On

constantly on or

switched by RTS Controlled

RTS/CTS Selects RTS/CTS 1 msec 1 msec

Delay delay 12 msec

Figure 3-1. Strapping Diagram.

CARRIER

RTS/CTS DELAY

1 MS 12 MS

DTE

DCE

DCE/DTE

SWITCH

ON CONTROLLED

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Black Box Modem Handbücher

Black Box

Black Box RM1600 Bedienungsanleitung

Black Box

Black Box 3600 Bedienungsanleitung

Black Box

Black Box MD403A Bedienungsanleitung

Black Box

Black Box 202T Bedienungsanleitung

Black Box

Black Box LD485S-MP Bedienungsanleitung

Black Box

Black Box MD3400A Bedienungsanleitung

Black Box

Black Box ME570A-MST Bedienungsanleitung

Black Box

Black Box MDR100A-R4 Bedienungsanleitung

Black Box

Black Box Mini Driver 4W-S Bedienungsanleitung

Black Box

Black Box ME0004C-G703 Bedienungsanleitung

Black Box

Black Box USR5686E Bedienungsanleitung

Black Box

Black Box ME570A-MST-R2 Bedienungsanleitung

Black Box

Black Box LDM-MR 19.2 Bedienungsanleitung

Black Box

Black Box 32457 Bedienungsanleitung

Black Box

Black Box MD5010A Bedienungsanleitung

Black Box

Black Box MD640A-ST-R2 Bedienungsanleitung

Black Box

Black Box ME500A Bedienungsanleitung

Black Box

Black Box Speedster 288 Bedienungsanleitung

Black Box

Black Box SHM-FSK Bedienungsanleitung

Black Box

Black Box Sync/Async Fiber Optic Modem Bedienungsanleitung

Black Box

Black Box ME615A Bedienungsanleitung

Black Box

Black Box MT240A-R2 Bedienungsanleitung

Black Box

Black Box ME801A-E Bedienungsanleitung

Black Box

Black Box MT632A-ST35 Bedienungsanleitung

Beliebte Modem Handbücher anderer Marken

Davicom

Davicom DM562AP Bedienungsanleitung

EpiValley

EpiValley TATA indicom SXC-1080 Bedienungsanleitung

Zte

Zte WiMAX Bedienungsanleitung

Intelimax

Intelimax MA-2060 Bedienungsanleitung

SMC Networks

SMC Networks D3CM1604V Gebrauchs- und Pflegehandbuch

Telstra

Telstra Wi-Fi 4G Advanced Pro X Bedienungsanleitung

Thrane&Thrane

Thrane&Thrane imarsat EXPLORER 300 Bedienungsanleitung

Samsung

Samsung AceLink SAM-335A Bedienungsanleitung

Enfora

Enfora Enabler-G Kurzanleitung zur Einrichtung

iRZ

iRZ ATM2-232 Bedienungsanleitung

Zhone

Zhone 6310 Bedienungsanleitung

Paradyne

Paradyne Hotwire 7976 Bedienungsanleitung

US Robotics

US Robotics 3453C Bedienungsanleitung

MaxTech

MaxTech Plug & Play Internal Voice/FAX/Data/SVD... Bedienungsanleitung

Zte

Zte MF823 Bedienungsanleitung

Four-Faith

Four-Faith F1403 Bedienungsanleitung

Sierra Wireless

Sierra Wireless AIRLINK MP595W Bedienungsanleitung

Gemtek

Gemtek WiMAX WIXFBR-103 Bedienungsanleitung