Telecom Analysis Systems Inc. TAS 240 Otro
No hay fotos disponibles!
Tal vez puedas subir por foto para el
Telecom Analysis Systems Inc. TAS 240 ?
Si tienes otros manuales para el
Telecom Analysis Systems Inc. TAS 240 puedes subir los archivos aquí .
Voiceband Subscriber Loop Emulator
The TAS 240
Voice band Subscriber Loop Emulator (VSLE) is a
general purpose loop emulator for voiceband applications.
The VSLE provides simulation of up to four (4) loops in a
single enclosure. The VSLE has been designed specifically to
provide the loop emulation required for testing high-speed
voiceband modems per the specifications provided by (or
currently proposed by) the EIA/TIA TR30.3 sub-committee,
ETSl, and the CCITT.
The VSLE simulates four loops in order to completely emulate
the network which interconnects two modems. The four loops
are allocated to the following:
~) One "main" loop between the Telephone Network Emulator
station A, and modem ‘’A".
-) One "main" loop between the Telephone Network Emulator
station B, and modem "B".
-) One "tracking11 loop to provide the balance network for
the station A hybrid.
-) One "tracking0 loop to provide the balance network for
the station B hybrid.
The second pair of loops, '‘main" loop for station B and its
associated tracking loop, are an optional feature of the VSLE.
In addition to loop simulation the VSLE simulates metering
pulses which are present on the local loops of several
European countries, and are specified by the ETSl test
specifications. Metering pulses are also an optionaPfeature
of the VSLE.
The available models and configuration of options for the
VSLE are as follows:
240A VSLE with four loops and Metering Pulses.
240 VSLE with four loops.
240L VSLE with two loops
(Loop A with A tracking loop).
240M VSLE with Metering Pulses and no loops.
This manual describes the 240A system unless otherwise
The TAS 240
Voiceband Subscriber Loop Emulator (VSLE) is
designed to emulate the local loop conditions specified by
the EIA/TIA TR30.3 subcommittee (proposed for EIA RS-496B),
the ETSl NET 20 document, and the loop conditions of the
CCITT TD-237 document. In addition the TAS 240
user defined loops. The TAS 240
emulates up to two sets of
loops where each set consists of a "main" loop and its
associated "tracking" loop. The main loop is used to emulate
the Station A or Station B local loop, while the tracking
loop is used primarily as the balance network for balancing
the Station A or Station B hybrid. Loop B is independent of
Loop A, however each tracking loop is always identical to
its main loop. For test configurations which do not require
the balance network to be identical to the loop, the
tracking loop may be used as a primary loop.
The TAS 240
VSLE may be equipped with the optional Metering
when initially purchased. This option allows
the user to program the frequency, level, and cadence of the
metering (or billing) pulse signal injected onto the
specified main loop. Metering Pulses are required to meet
the ESTI testing • requirements of several European countries.
The TAS 240
is intended to be integrated into a complete
modem test system under control of TASKIT. The components of
the overall test system include a TAS 1022 Gemini Dual
Terminal Emulator, and either the TAS 100 Series
Series II Telephone Network Emulator Alternatively, the TAS
240 may also be used as a standalone product, controlled
manually via the front panel, or remotely via RS-232 or
Manual del usuario
16.41 Mbytes (17208909 Bytes)
01 enero 1992
Documento Scaned, todo legible.
Fecha de subida:
05 febrero 2017
The TAS 240
Voice Band Subscriber Loop Emulator Operations
Manual contains the information required to use the emulator
in the most effective manner. It is recommended that you
familiarize yourself with this manual before attempting to
use the TAS 240
, This manual is organized as follows:
The INTRODUCTION section prepares you to begin using the TAS
240. It provides a brief description, the features and
applications, overviews of the front and rear panel, and
The LOCAL OPERATION section discusses the functions of the
various displays, controls, jacks, and ports located on the
front and rear panels.
A REMOTE CONTROL OPERATION section provides the necessary
information to control the TAS 240
via RS-232C or GPIB
(IEEE-488) interfaces. This section is essentia! reading for
those who will be integrating a TAS 240-into a larger test
system. Descriptions are also provided of the TAS 240
codes possibly encountered during power-up or operation.
The COMMAND SUMMARY section provides detailed descriptions
of each remote command and its parameters. A summary of all
the TAS 240
remote commands is included for quick reference.
The ERROR CODES section list all the error codes that may be
encountered during the operation of the TAS 240
The TECHNICAL SPECIFICATIONS section contains detailed
system specifications, connector pinouts, and loop response
APPLICATION NOTES is reserved for application bulletins. We
welcome any comments, suggestions, or questions regarding
your particular application.