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Black Box Corporation
• 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 •
www.blackbox.com
•
e-mail: [email protected]
Built-in test pattern
generator quickly tests
network faults with
BERT functionality.
Easy-to-read, front-
panel 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 technolo-
gy. 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 Digi-
tal 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 connect-
or. Limited Distance Modem
Identify and
diagnose line
problems.
Key Features
SMART 64K CSU/DSU
S
2/27/2003
#21236
operation is also available; one
unit is configured with a master
clock setting. At 56 kbps, depend-
ing 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 dis-
play 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.