Introduction, Features, Data Interface | Telenetics 2185 specification

Chapter 1

Introduction

INTRODUCTION

Your Telenetics 2185 is a digital bridge that can connect up to five sub- channel devices to a single main channel device. Sharing computer and communications resources through a 2185 can achieve significant sav- ings in hardware and line costs.

The 2185 is a versatile unit that can be used in both port-sharing and modem-sharing applications. The main channel and each of the five subchannels are individually configurable as either EIA 232-D Data Terminal Equipment (DTE) or Data Circuit-terminating Equipment (DCE).

Data received on the main channel is broadcast simultaneously to the subchannels. Subchannels contend for one-at-a-time access to the main channel.

2185 FEATURES

To ensure trouble-free operation and allow for network growth you 2185 has a number of impressive built-in features including subchannel contention, anti-streaming, and a synchronous data retiming buffer.

Data Interface

To virtually guarantee you are able to connect your equipment to the 2185, all data interfaces (main channel and five subchannels) are EIA 232-D compatible. They can be individually configured as DTE or DCE via front-panel-mounted DIP switches. All connections to the 2185 are made via straight-through cables.

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Telenetics 2185 manual Introduction, Features, Data Interface

Contents

Telenetics Proprietary Material Page Page Contents Ordering Information Introduction FeaturesData Interface Main Channel Broadcast Subchannel ContentionSynchronous Data Retiming Buffer Anti-Streaming Applications Port-Sharing Application Port-Sharing Mode Modem-Sharing Application Modem-Sharing Mode Cascading Co-Located Terminals Local Cascading Application Remote Cascading Application Specifications Specifications Telenetics Site Selection and Preparation Customer Responsibilities Damage/Material Shortages UnpackingPacking Materials Equipment Supplied Mechanical Installation Installation ProcedureEquipment Assembly Installation Tools Required Rear Panel Assembly Straight-Through Cable Interface Telenetics Front View Door Closed Operating Controls Indicators Inside Front Panel Function Switch One Function SwitchesEnabling/Disabling Subchannels Data Rate Selection Using Switch Segments 1-6 to Function Switch TwoFunction Switch Two Summary Switch Segment 2-1 Contention Mode Clock Routing Configurations Switch Segment 2-4 Anti-Streaming Enable/Disable Switch Segment 2-7 Main Channel RTS/DCD Strapping External Clock Reference with Main Channel DTE External Clock Reference with Main Channel DCE Internal Clock Reference with Main Channel DTE Internal Clock Reference with Main Channel DCE Subchannel 1 DCE Clock Reference with Main Channel DTE Subchannel 1 DCE Clock Reference with Main Channel DCE DTE/DCE Optioning LED IndicatorsConfiguration Examples Function Switch Three Digital Bridging Application Example Digital Bridging Application Switch Two Switch One Switch Three Leased-Line Backup Application Example 10 Leased-Line Backup Application Switch One 11. Switch Three 10. Switch Two 11. Multimaster Multidrop Application Multimaster Multidrop Application Example 12. Switch One Settings 2185 a 14. Switch Three Settings 2185 a 13. Switch Two Settings 2185 a15. Switch One Settings 2185 B 17. Switch Three Settings 2185 B 16. Switch Two Settings 2185 B 18. LED Status Indicator Functions Main Power Connection 12 Power Connection Operation POWER-DOWN Procedure Recovery from Anti-Streaming Alarm Condition Maintenance PhilosophyPreventive Maintenance Corrective Maintenance Returning Defective Equipment for Repair Installations in the USAGeneral Packing Information Installations Outside the USA or Canada Telenetics Telenetics Ordering Information Ordering Information Telenetics Glossary Glossary-2 Glossary-3 Glossary-4 Index INDEX-2 INDEX-3 INDEX-4