Black Box MT190A, MT190A-D48, MT190A-D130 Specifications

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

Built-in test pattern
generator quickly tests
network faults with
BERT functionality.

Easy-to-read, front­panel LCD provides
“plain English”
readouts of line
conditions.

DDS and sync DTE
data rates up to 64K!
Async DTE data rates
up to 57.6K!

Test and report
problems to your
service provider ASAP.

Error LEDs indicate
line impairments.

Three models
available.

T

he Smart 64K CSU/DSUs are

advanced channel service
units/data service units that use
Digital Signal Processor technolo­gy. They’re standalone units that
connect two remote locations
together to form a wide-area
network (WAN). They operate
in point-to-point or multipoint
environments on Dataphone Digi­tal Service (DDS) provided by
common carriers.

These multirate-line digital
termination units operate at all
common speeds between 2400
bps and 64 kbps. The line speed
and the DTE speed may be the
same or different. The CSU/DSUs
support both asynchronous and
synchronous operation.

Their rear panels have one
DB25 DTE connector for RS-232
devices (labeled Port 1), one M/34
DTE connector for V.35 devices
(labeled V.35 Port 1), a power
connection receptacle, and an
RJ-48S female network connect­or. Limited Distance Modem

Identify and

diagnose line

problems.

Key Features

SMART 64K CSU/DSUS

2/27/2003 #21236

operation is also available; one
unit is configured with a master
clock setting. At 56 kbps, depend­ing upon wire gauge, the units
can operate error-free up to
10 miles (16.1 km) away.

The CSU/DSUs have three
front-panel touchpad buttons
(Select, Advance, and Enter) to
help you easily manipulate the
units through port and line
settings, diagnostic testing, and
selecting an operational display.
An LCD display next to the buttons
provides a visual interface into the
CSU/DSUs’ menu system as well
as their operation. The LCD dis­play is a single-line, 16-character
position display.

All defined line speeds that
have DTE port speeds less than or
equal to the line speed will match
each other. One exception exists
for 57-kbps asynchronous
operation, which is supported
on a 56-kbps DDS facility. In
addition, synchronous as well as
asynchronous character formats

and timings are supported in both
point-to-point and multipoint
applications.

Electrical requirements are
supplied by an external power
transformer. For the MT190A, the
power transformer accepts 120
VAC. For the MT190A-D48, the
power-supply cable accepts 24
to 48 VDC. For the MT190A-D130,
the power-supply cable accepts
130 VDC.

The electrical connection is
free from any dangerous voltages
on the PC board itself. UL

®

and
CSA approvals exist for the power
transformer only.

The Smart 64K CSU/DSUs are
DCE devices and only require
straight-through cables for all DTE
equipment.

© 2003. All rights reserved.

Black Box Corporation.

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Ordering Information

ITEM CODE

Smart 64K CSU/DSUs

120-VAC ....................................................................MT190A

24–48-VDC.......................................................MT190A-D48

130-HVDC ......................................................MT190A-D130

For optimum performance and a 20% savings, order…

RS-232 Cable, 10-ft. (3-m),

Male/Female..........................................ECM25C-0010-MF

V.35 Interface Cable, 10-ft. (3-m),

Male/Female ...........................................EYN450-0010-MF

Approvals: FCC Class A, FCC Part 68

(1U5USA-74399-DE-N); UL

®

; CSA

DDS Data Rates: 2400, 4800, and

9600 bps; 19.2, 56, and 64 kbps

Diagnostics: Operational line testing:

In spec/out of spec;

Parametric testing (± -0.5 dBm):

Line attenuation, background
noise, impulse noise

DTE Data Rates:

Async: 1200, 2400, 4800,

and 9600 bps; 19.2, 38.4, 56,
and 57.6 kbps;

Sync: 300, 600, 1200, 2400, 4800,

and 9600 bps; 19.2, 38.4, 56,
and 64 kbps

Line Type: DDS

Loopback: Digital loop, local loop,

remote loop, CSU, DSU

Protocol: Sync or async

Receiver Sensitivity: 0 to -60 dB for

56- and 64-kbps operation

Connectors: Line: (1) 4-wire RJ-48S;

Data ports: (1) DB25 F (DCE),

(1) M/34 F (DCE)

Indicators: (6) simulated LED

indicators on the front-panel LCD

display: In Svc, Car Det, Req
Send, Clr Send, Send Data, and
Recv Data ([2] vertical columns
of LEDs provide the same
operational information whether
or not the LCD display is currently
displaying such information)

Operating Environment:

Temperature: 32 to 104°F

(0 to 40°C);

Humidity: Up to 95%

noncondensing

Altitude Tolerance (Maximum):

10,000 ft. (3048 m)

Power: MT190A: 120-VAC, 60-Hz,

30W external transformer;

MT190A-D48: 24–48-VDC

external transformer;

MT190A-D130: 130-HVDC

external transformer

Size: 1.8"H x 8.6"W x 8.4"D

(4.6 x 21.8 x 21.3 cm)

Weight: 2.6 lb. (1.2 kg)

Specifications

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 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 V alue.Exceptional Tech Support.Period.

• (1) Smart 64K CSU/DSU.

• (1) Straight-through RJ-48S male/male network interface
connection cable.

• (1) Power supply.

• Users’ manual.

What the Package Includes

CSU (Channel Service Unit):

A device that functions as a
digital modem. It transmits and
receives digital signals, as well
as shapes and filters signals.

DDS (Dataphone Digital

Service): DDS is a private line

digital service, offered by AT&T

®

and the Bell operating
companies.

DSU (Data Service Unit): A
device used in conjunction with
a CSU to ensure proper signal
shaping and encoding.

Technical Glossary

DTU (Digital Termination

Unit): Combines a Channel

Service Unit (CSU) and a Data
Service Unit (DSU) in a single
package.

I.Q.: Short for Intelligent
Quantitative Parametric Testing.
I.Q. is also commonly used to

connote a level of intelligence.

Mark: A condition in which the
telco line is transmitting or
receiving an all-ones signal.

Space: A condition in which
the telco line is transmitting or
receiving an all-zeros signal.