Telenetics 2185 Manuel d'utilisateur

Telenetics2185 Digital Bridge User Guide

Telenetics 21851-4• When operating with control signal contention, the 2185 is trans-parent to the data stream.• When operating with data contention,

Telenetics 21851-5Modem-Sharing ModeIn the modem-sharing mode, the CPU or controller is at a site remote from the 2185. The 2185's main channel c

Telenetics 21851-6Co-Located TerminalsAny combination of subchannel DTE devices and subchannel DCE devices is possible. For example, local subchannel

Telenetics 21851-7Figure 1-4. Local Cascading Application

Telenetics 21851-8Two or more of the 2185s can be located at one site as shown in Figure 1-4. Alternatively, the units may be located at sites remote

Telenetics 21851-9SPECIFICATIONSTable 1-1 summarizes 2185 specifications.Table 1-1. 2185 SpecificationsData RatesInternally Generated 75,1200,2400,480

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2-1Chapter 2InstallationINTRODUCTIONThis chapter contains the information you need to install you Telenetics 2185.CUSTOMER RESPONSIBILITIESAfter deliv

Telenetics 21852-2UNPACKINGPacking MaterialsYour 2185 is wrapped in re-usable, shock-absorbent packing material. Telenetics recommends that you keep t

Telenetics 21852-3INSTALLATION PROCEDUREEquipment AssemblyThe 2185 is shipped as a completely assembled unit with the printed cir-cuit board and power

Notice2001 Telenetics Corporation25111 Arctic OceanLake Forest, California 92630(949) 455-4000All rights reservedPrinted in U.S.A.Proprietary Materia

Figure 2-1. Rear Panel AssemblyNote: The 2185 may have its main channel or any subchannel config-ured as DCE or DTE.Any necessary signal crossovers ar

Telenetics 21852-5Figure 2-2. Straight-Through Cable InterfaceFigure 2-2 shows the straight-through cable signal interface. Be sure to tighten all con

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3-1Chapter 3Operation and ConfigurationINTRODUCTIONThis chapter describes the 2185 operating controls and indicators, how to configure and operate you

Telenetics 21853-2Figure 3-2. 2185 Inside Front Panel

Telenetics 21853-3FUNCTION SWITCHESThe front-panel-mounted controls consist of three Dual In-line Package (DIP) function switches. Switch banks one an

Telenetics 21853-4Switch segments 1-6 to 1-8 are used to set the data rate on the 2185. See Table 3-2 for information on setting these switches. Funct

Telenetics 21853-5In certain synchronous configurations, the internal clock generator is not used and the data rate is determined by the selected exte

Telenetics 21853-6With synchronous data transmission, the data retiming buffer must be used except when all subchannels are connected to DTE devices.

Telenetics 21853-7Switch Segment 2-7 — Main Channel RTS/DCD Strapping• Switch 2-7 set to up position – RTS/DCD transparent• Switch 2-7 set to down pos

Notice (cont’d)WarningThis equipment does not exceed the Class A limits for radio noise interference emissions from digital apparatus as specified in

Telenetics 21853-8Figure 3-3. External Clock Reference with Main Channel DTE

Telenetics 21853-9Figure 3-4. External Clock Reference with Main Channel DCE

Telenetics 21853-10Figure 3-5. Internal Clock Reference with Main Channel DTE

Telenetics 21853-11Figure 3-6. Internal Clock Reference with Main Channel DCE

Telenetics 21853-12Figure 3-7. Subchannel 1 DCE Clock Reference with Main Channel DTE

Telenetics 21853-13Figure 3-8. Subchannel 1 DCE Clock Reference with Main Channel DCE

Telenetics 21853-14Function Switch ThreeFunction switch three is a six-segment DIP switch used to configure the data interfaces for each channel. Set

Telenetics 21853-15Digital Bridging Application ExampleOne of the most common applications for your 2185 is as a digital bridge. In this instance, a 2

Telenetics 21853-16Figure 3-9. 2185 Digital Bridging Application

Telenetics 21853-17Table 3-7. Switch TwoTable 3-6. Switch OneSwitch Segment Setting Reason1-1 Down Enable Subchannel 11-2 Down Enable Subchannel 21-3

Telenetics 21853-18Table 3-8. Switch ThreeLeased-Line Backup Application ExampleAnother common application example for your 2185 is the Leased-Line B

Telenetics 21853-19Figure 3-10. 2185 Leased-Line Backup Application

Telenetics 21853-20In this application the main channel of 2185 A is connected to a host computer through a front-end processor. The data rate is 9. 6

Telenetics 21853-21Table 3-10. Switch TwoSwitch Segment Setting Reason2-1 Down Data Contention2-2 Up Synchronous operation2-3 Up Retiming Buffer on2-4

Telenetics 21853-22Multimaster Multidrop Application ExampleIn this application, 2185s are used to provide a link between remote users and two mainfra

Telenetics 21853-23In this application, the main channel of both 2185 A and 2185 B are con-nected via a straight-through cable with the 2185 A main ch

Telenetics 21853-24Table 3-13. Switch Two Settings – 2185 ASwitch Segment Setting Reason2-1 Up Control Signal Contention2-2 Down Asynchronous operatio

Telenetics 21853-25Table 3-16. Switch Two Settings – 2185 BSwitch Segment Setting Reason2-1 Down Data Contention2-2 Down Asynchronous operation2-3 XX

Telenetics 21853-26MAIN POWER CONNECTION115 Volt Models - 115V ac models use a wall-mount transformer (Prod-uct Code 28410?) equipped with a North Ame

Telenetics 21853-27Alternative power supplies that were not approved at the time of this publication may be available; consult your local distributor

ContentsChapter 1, IntroductionIntroduction ... 1-12185 FEATURES ...

Telenetics 21853-28OPERATIONOnce you successfully power-up your 2185, it is fully operational and does not require any further initialization procedur

4-1Chapter 4Operation and ConfigurationMAINTENANCE PHILOSOPHYPreventive MaintenanceThere is no preventive maintenance necessary on your Telenetics 218

Telenetics 21854-2If all equipment in the network is functioning properly and anti-stream-ing alarms are occurring, the probable cause is that the sub

Telenetics 21854-3When contacting Telenetics, you receive a Telenetics Return Material Authorization (RMA) Control Number. This RMA Control Number sho

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5-1Chapter 5Ordering InformationINTRODUCTIONThis chapter provides Telenetics product and ordering information for the 2185.Ordering InformationTable 5

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Glossary-1GlossaryThis glossary defines terms used in the 2185 Operator's Guide.ACTIVE LED indicator lamp that illuminates when the subchannel in

Telenetics 2185Glossary-2Controller Device responsible for polling terminals and routing messages in a multipoint environment.Control Signal Contentio

Telenetics 2185Glossary-3RDY Ready. LED indicator lamp that illuminates when the main channel inbound DSR or DTR is ON.Straight-Through CableCable te

Telenetics 2185viChapter 4, Operation and ConfigurationMaintenance Philosophy ... 4-1Pre

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INDEX-1IndexAAnti-streaming 1-3Anti-streaming alarm, recovery 4-1Applications 1-3cascading the 2185 1-6, 1-8co-located terminals 1-6modem-sharing mode

INDEX-2Index (continued)IIndicators 3-1Inside front panel 3-2Installation procedure 2-3cabling 2-3equipment assembly 2-3mechanical 2-3required tools 2

Index (continued)INDEX-3Site preparation 2-1Specifications 1-9Subchannel contention 1-2Switches 3-3switch one 3-3switch three 3-14switch two 3-4Synchr

INDEX-4Index (continued)

1-1Chapter 1IntroductionINTRODUCTIONYour Telenetics 2185 is a digital bridge that can connect up to five sub-channel devices to a single main channel

Telenetics 21851-2Main Channel BroadcastData received on the main channel is broadcast to all subchannels. In synchronous operation, the corresponding

Telenetics 21851-3phase, frequency, and the presence of jitter could cause the subchannel and the main channel to lose synchronization. If synchroniza