Black Box ME251A-R3 Bedienungsanleitung

Replaces a pair of modems to connect

IBM mainframes, minicomputers, and controllers.

Replaces a pair of modems to connect

IBM mainframes, minicomputers, and controllers.

Synchronous Modem Eliminator (SME-4M)

FREE 24-hour Tech Support: 724-746-5500

blackbox.com

2 of 3

FEATURES

• Replaces two modems in point-to-point

applications.

• Speeds up to 38.4 kbps.

• Small and lightweight. Easy to install

or replace in the field.

• LEDs show DSR, CTS, and TXD for

both ports.

• Front-panel switches set signals and

select test mode.

• Operates transparently, sync or async.

IBM compatibility at two different speeds. Runs sync or async, too!

OVERVIEW

The Synchronous Modem Eliminator (SME-4M) enables

a mainframe or minicomputer to communicate locally with

another mainframe, minicomputer, or remote controller.

And best of all, it saves you money because the SME-4M

replaces the two modems or line drivers normally needed

for such communication.

Just one versatile SME-4M enables asynchronous,

synchronous, or bisynchronous communications between

two DTEs over RS-232C cable.

In synchronous mode, the unit operates at data rates that

top out at 38.4 kbps. Plus the SME-4M operates transparently

in either synchronous or asynchronous mode. You can also

configure the SME-4M to operate at some nonstandard data

transmission speeds. To set the SME-4M for one of these

speeds, configure the unit according to the chart on the right.

The SME-4M is small and lightweight, so it’s easy to handle.

And because no special tools are needed, installation is simple.

The modem eliminator’s front panel has six LEDs and

three switches. The six LEDs indicate Clear To Send (CTS),

Transmitted Data (TXD), and Data Set Ready (DSR) for each

port. The three switches include Ring Indicator (RI) and

Control Data Set Ready (CON) signals, and (LB) selects the

Digital Loopback Test Mode.

Use the SME-4M’s diagnostic loopback capability to test

asynchronous applications. Simply press the switch and enter

data at the host terminal or computer. That data should

return to you exactly as you sent it.

The unit fits neatly on a desktop. Each SME-4M is shipped

with a 115-VAC power transformer and a user’s manual.

SME-4M

(ME251A-R3)

IBM®

mainframe

RS-232 Cable

(ECM25C)

RS-232 Cable

(ECM25C) S/3X or

AS/400®host

2/22/2007

#10205

724-746-5500 blackbox.com

Strap Position Transmission Rate (bps)

a 76,800

b 153,600

38,400 38,400

19,200 19,200

9600 9600

4800 4800

2400 2400

1200 1200

Crystal Frequency 2.4576 MHz

Buyer’s Guide Transmission Speeds

3 of 3

TECH SPECS

Clock — Internal or external

Diagnostics — Bidirectional loopback (async)

Operation — Full or half-duplex

Protocol — Async or sync

Speed — 1.2, 2.4, 4.8, 9.6, 19.2, and 38.4 kbps

User Controls — (3) switches: Ring Indicator (RI), Control Data Set Ready

(CON), Digital Loopback Test Mode (LB)

Interface — RS-232

Connectors — (2) DB25 F

Indicators — (6) LEDs: DSR, CTS, TXD for each of the two ports

Power — 115 VAC/60 Hz, 10 watts

Size — 1.8"H x 5.5"W x 8.6"D (4.6 x 14 x 21.8 cm)

Weight — 2 lb. (0.9 kg)

Item Code

Synchronous Modem Eliminator (SME-4M) for RS-232

38.4-kbps

Standalone (115-VAC) ME251A-R3

For optimum performance and a 20% savings, order…

RS-232 Cable, 25-Conductor, 10-ft. (3-m) ECM25C-0010

2/22/2007

#10205

Recognize any of these situations?

• You wait more than 30 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

far 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.

Why Buy From Black Box? Exceptional Value.

Exceptional Tech Support. Period.

724-746-5500 blackbox.com

Andere Handbücher für ME251A-R3

Dieses Handbuch passt für folgende Modelle

Andere Black Box Modem Handbücher

Black Box

Black Box ME475A Bedienungsanleitung

Black Box

Black Box Speedster 288 Bedienungsanleitung

Black Box

Black Box SHM-NPR/RJ-45 Series Bedienungsanleitung

Black Box

Black Box G.703/G.704 NTU w/V35 Bedienungsanleitung

Black Box

Black Box SHM-768K Series Bedienungsanleitung

Black Box

Black Box ME0004C-G703 Bedienungsanleitung

Black Box

Black Box MDS932AE-10BT Bedienungsanleitung

Black Box

Black Box Mini-Modem V.92 MD1626A Bedienungsanleitung

Black Box

Black Box SHM-NPR Series Bedienungsanleitung

Black Box

Black Box MDU9705A-V35 Bedienungsanleitung

Black Box

Black Box MD1620A Bedienungsanleitung

Black Box

Black Box Sync/Async Fiber Optic Modem Bedienungsanleitung

Black Box

Black Box Mobile Linc-Up Bedienungsanleitung

Black Box

Black Box ME260A Bedienungsanleitung

Black Box

Black Box MD3450A Bedienungsanleitung

Black Box

Black Box MD1276A Bedienungsanleitung

Black Box

Black Box Tote-a-Fax 542 Bedienungsanleitung

Black Box

Black Box Industrial Modem RF115 Bedienungsanleitung

Black Box

Black Box ME500A Bedienungsanleitung

Black Box

Black Box ME1791A-F Bedienungsanleitung

Black Box

Black Box LDM-144LR Bedienungsanleitung

Black Box

Black Box 40418 Bedienungsanleitung

Black Box

Black Box ME615A Bedienungsanleitung

Black Box

Black Box MD885A-R4 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