Model 458-3SLB (3-Slot Chassis)
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1.0 Introduction
The Model 458-3SLB (3-Slot Chassis) is a compact, versatile unit that accepts 1, 2 or 3 line modules
and controls from 1 - 24 channels. It is ideal for testing DSL modems and other bandwidth-compliant
telecom devices in a high-volume production environment. While it can be used as a stand-alone unit,
the built-in Control Module interfaces with a PC via RS-232, IEEE-488, or Ethernet. Line lengths and
configuration settings appear on an LCD display on the front of the unit and can be set via a keypad.
For added convenience, the Control Module firmware is field-upgradeable through the RS-232 port.
The same software is used for the 458-CM (16-Slot chassis).
The Model 458-3SLB is used with our advanced 458 Line Modules that simulate several cable types
and offer the bandwidth requirements for today’s xDSL technologies such as varieties of ADSL,
ADSL2+ and VDSL2. User-friendly GUIs (included with line modules) provide another means of
controlling loop lengths and communication parameters.
For more information about Telebyte’s plug-
in line modules, refer to the individual datasheets or manuals.
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The Model 458-3SLB is totally compatible with the 458-3SLA.
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Telebyte recommends customers use the latest firmware available on our web site at
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The 458-3SLB is designed to provide sufficient power to our 458-RT Ring-Trip Interference
Simulator. Only one 458-RT can be used in a 458-3SLB at any given time.
Chassis/Control Module
The Chassis may be mounted in a standard 19-in rack and accepts a maximum of three Line
Modules.
The front of the Model 458-3SLB is shown with three line modules installed (not included).
