Telecom Analysis Systems Inc. TAS 240 Otro
Fabricante:
Modelo:
TAS 240
Fecha:
1992
Categoría:
Grupo:
Descripción:
Voiceband Subscriber Loop Emulator

Información

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 TAS 240 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 indicated. 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 will emulate 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 Pulse Generator 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 or TAS 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 IEEE-488.

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Manual del usuario
Type manuel:
Manual del usuario
Páginas:
482
Tamaño:
16.41 Mbytes (17208909 Bytes)
Idioma:
english
Revisión:
1.13
Manuel-ID:
2710-2398
Fecha:
01 enero 1992
Formato:
Documento Scaned, todo legible.
Fecha de subida:
05 febrero 2017
MD5:
a8b995e42003143e832505e9d629774e
Descargas:
186

Información

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 installation procedures. 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 error 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 graphs. APPLICATION NOTES is reserved for application bulletins. We welcome any comments, suggestions, or questions regarding your particular application.

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