Manuale d’uso / di manutenzione del prodotto 2185 del fabbricante Telenetics
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Telenetics 2185 Digital Bridge User Guide.
Notice 2001 T elenetics Cor poration 25111 Arctic Ocean Lake For est, Cal iforni a 92630 (949) 45 5-4000 All rights rese rved Printed in U.S.A. Pr oprieta ry Material Informat ion and s oftwa re i.
Notice (cont’ d) Wa r n i n g This equipment does not e xceed the Clas s A limits fo r rad io no ise in terferen ce emi ssions from digital apparatus as specified in the radio interference reg ulations of the Canadian Depart ment of Commu nications .
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Contents Chapter 1, Introduction Introduct ion .... ....... ........... ....... ....... ........ ....... ....... ........... ....... ....... .. 1-1 2185 FEA TURES ......... ....... ........ ....... ....... ....... ........... ........ ....... ..... 1-1 Data In terface .
Telen eti cs 21 85 vi Chapter 4, Operation and Configur ation Mainten ance Philoso phy ......... ....... ........ .......... ........ ....... ....... ....... .. 4-1 Pre v enti v e Ma intenan ce ......... ....... ....... ....... ........... ........ ..
1-1 Chap ter 1 Introduction INTRODUCTION Y o ur T elenetics 2 185 is a digital bridge that can connect up to five sub- channel devices to a single main cha nnel device. Shar ing compu ter and communications resour ces through a 218 5 can achieve sign ificant sav- ings in har dware and line cos ts.
Telen eti cs 21 85 1-2 Main Channel Broadcast Data received on the main channel is broadca st to all su bchannels. In synchro nous operation , the correspond ing clock is also broadca st. DSR and DC D are sent to all su bchannel DTE de vices, and DTR and R TS to all subchannel DCE devi ces.
Telen eti cs 21 85 1-3 phase, frequency , and the presence of jitter could cause the sub channel and the main channel to lose synchronization. If synchronizati on is lost, data errors occur and transmis sion fails. When the 2185 is configu red for asynchrono us operat ion, the retiming buf fer is by passed.
Telen eti cs 21 85 1-4 • When opera ting wi th control sign al conten tion, the 2185 is trans- parent to the data stream . • When opera ting wi th data conte ntion, subchan nel data must be mark idle a nd 16 consecutive ma rks cannot ap pear in m id-mes- sage.
Telen eti cs 21 85 1-5 Modem-Sharing Mode In the m odem-sharing mode, the CPU or co ntroller is at a site remote from the 2185. Th e 2185's main channel connects to the CPU through a modem link (DCE). Subchannel terminals are connected directly to the 2185.
Telen eti cs 21 85 1-6 Co-Locate d T erminals Any c omb ina tio n of s u bcha nne l DT E devi ces an d s ubc hann el DCE devices is possible. For exam ple, local subchannel terminals can be co- located with modes that communicate with devices at remote sites.
Telen eti cs 21 85 1-7 Figure 1-4. Local Cascading Application.
Telen eti cs 21 85 1-8 T wo or more o f the 2185s can be located at one si te as shown i n Figure 1-4. Alternatively , the units may be located at sites remote from each other , and connect via modems.
Telen eti cs 21 85 1-9 SPECIFICATIONS T able 1-1 summarizes 2185 specifications. T able 1- 1. 21 85 Speci ficatio ns Data Rates Inter nally G enera ted 75,12 00,2 400, 4800,7 200, 9600 ,14400 ,192 0 0, bps (al l ± 0.
Telen eti cs 21 85 1-10.
2-1 Chap ter 2 Installation INTRODUCTION This cha pter co nta ins t he in form ati on you n eed to install you Telenetics 2185. CUST OMER RESPONSIBILITIES After delivery of your equi pment and before .
Telen eti cs 21 85 2-2 UNPACKING Packing M aterials Y our 218 5 is w rapped in re-usable, sh ock-abs orbent pack ing m aterial. T elenetics recomme nds that y ou keep this packing material and the shipping ca rton in case the un it must be s tored, s hipped, or r eturned to T elenetics fo r service.
Telen eti cs 21 85 2-3 INSTALLATION PROCEDURE Equipment Assembly The 2185 is shipp ed as a completely assembled unit with the printed cir- cuit board and po wer supply sub-assemblies already ins talled.
Figure 2-1. Rear Panel Assembly Note : The 2185 may have its main channel or any subchannel con fig- ured as DCE or DTE.Any necessary signal crossov ers are performed internally .
Telen eti cs 21 85 2-5 Figure 2-2. Straight-T hrough Cable Interface Figure 2-2 s hows the straigh t-through cable signal interface. Be s ure to tighten all conn ectors se curely t o ensure good mechan ical connectio n, and to assure t he integrity of the cable shield.
Telen eti cs 21 85 2-6.
3-1 Chap ter 3 Operation and Configu ration INTRODUCTION This chapter descr ibes the 2185 oper ating controls and indicat ors, how to configure and operate yo ur 2185 using t hese operatin g controls, an d how to p ower-up an d power-d own th e unit. Once con figured, your 2185 operate s unattended , witho ut operator intervention.
Telen eti cs 21 85 3-2 Figure 3-2. 2185 Inside Fron t Panel.
Telen eti cs 21 85 3-3 FUNCTION SWITCHES The front- panel-mounted contro ls consist of three Dual In- line Package (DIP) function switches. Switch banks one a nd two contain eight indi- vidual switches and switch three co ntains six i ndividual switches.
Telen eti cs 21 85 3-4 Switch se gments 1-6 t o 1-8 are us ed to set t he data rate on the 218 5. See T able 3-2 for i nformation on set ting these switc hes.
Telen eti cs 21 85 3-5 In certain sy nchrono us confi gurations , the internal clock gen erator is not used and th e data rate is determined by the selected extern al clock source. (For det ails, refer to the section on functi on switch segmen ts 2-5 and 2-6 - Clock Routing .
Telen eti cs 21 85 3-6 W ith synchronous data tran smissio n, the data retiming buffer must be used excep t when all subc hannels are con nected to DTE device s. The data retiming buffer ma y then be byp assed to permi t passi ng B isynchro- nous multiple messages in Data Cont ention mod e.
Telen eti cs 21 85 3-7 Switch S egment 2-7 — Main Channel RTS/DCD Strapping • Switch 2-7 set to up po sit ion – RTS/DCD transpare nt • Switch 2- 7 set to down po sition – RTS/DCD strapped ON.
Telen eti cs 21 85 3-8 Figure 3-3. External Clock Reference with Main Channel DTE.
Telen eti cs 21 85 3-9 Figure 3-4. External Clock Reference with Main Channel DCE.
Telen eti cs 21 85 3-10 Figure 3-5. Internal Clock Reference with Main Channel DTE.
Telen eti cs 21 85 3-11 Figure 3-6. Internal Clock Reference with Main Channel DCE.
Telen eti cs 21 85 3-12 Figure 3-7. Subchannel 1 DCE Clock Reference with Main Channel DTE.
Telen eti cs 21 85 3-13 Figure 3-8. Subchannel 1 DCE Clock Reference with Main Channel DCE.
Telen eti cs 21 85 3-14 Function Switch Three Function switch three is a six-segment D IP switch used to configure the data interfaces for each channel. Set to U p (DTE) if the channel is connected t o a DTE -type device such as a CPU port or a ter minal (this configu res the 2185 interface as Data Circuit-terminati ng Equipment - DCE).
Telen eti cs 21 85 3-15 Digital Bridging Application Example One of the mos t common application s for your 2185 i s as a digital bridge. In this instance, a 2185 is used to connect a large number of loc al an d rem ote asyn chronou s t ermi nal s to a main fra me c ompu te r at a central site.
Telen eti cs 21 85 3-16 Figure 3-9. 2185 Digital Bridging Application.
Telen eti cs 21 85 3-17 T a ble 3- 7. Sw itch T wo T a ble 3- 6. Sw itch One Switch Segm ent S et ting Reaso n 1-1 Down Enabl e Subcha nnel 1 1-2 Down Enabl e Subcha nnel 2 1-3 Down Enabl e Subcha nnel 3 1-4 Up Disab le Subc ha nnel 4 1-5 Up Disab le Subc ha nnel 5 1-6 Dow n The s etti ngs of these thre e switches se t the data rate (9.
Telen eti cs 21 85 3-18 T a ble 3- 8. Switch T hree Leased-Line Backup Application Example Another common app lication example for you r 2185 is the Leased-Line Backup appl ication. In this exam ple, the 2185 is again used to connect a mainframe to re mote users.
Telen eti cs 21 85 3-19 Figure 3- 10. 2185 Leas ed-Lin e Backup Applic ation.
Telen eti cs 21 85 3-20 In this application the main channel of 2185 A is connected to a host computer through a fr ont-end proces sor . The data rate i s 9. 6 kbps and the format i s synchronous. Since t he main channel is connected to a DTE type device the m ain channel on 2185 A is set to DTE.
Telen eti cs 21 85 3-21 T a ble 3-10 . Swi tch T wo Switch Segment Se tting Reason 2-1 Down Data Conten tion 2-2 Up S ynchro nous oper ation 2-3 U p Retimin g Buf fer on 2-4 XX Depends on lin e condit.
Telen eti cs 21 85 3-22 Multimaster Multidrop Application Example In this application , 2185s are used to pro vide a link between remote users an d two mainframes, with the s econd mainf rame serving as the backup for the first. Figure 3-1 1 shows this application.
Telen eti cs 21 85 3-23 In this applicatio n, the main channel o f both 2185 A and 2185 B are con- nected via a straight-thro ugh cable with the 2185 A main ch annel set to DTE and the 2185 B main chan nel set to DCE. T he data rat e is 1.2 k pbs asynchro nous so clocki ng i s not an i ssue.
Telen eti cs 21 85 3-24 T able 3-13. Switch T w o Settings – 2185 A Switch Segment Settin g Reason 2-1 Up Control S ignal Co ntentio n 2-2 Down Asyn chro nous oper ati on 2-3 XX Does n ot m atte r; on for sync onl y 2-4 XX Depen ds on lin e cond itions 2-5 XX Do es not ma tter, since unit is set for async.
Telen eti cs 21 85 3-25 T able 3-16. Switch T w o Settings – 2185 B Switch Segm ent S et ting Re aso n 2-1 Down D ata C onten tion 2-2 Down Asy nchro nou s ope rat ion 2-3 XX Does not matte r , sinc e the u nit is on fo r sync only 2-4 XX Depend s on line cond itions 2-5 XX Doesn' t matter, since the unit is set for async.
Telen eti cs 21 85 3-26 MAIN POWER CONNECTION 1 15 V olt Models - 1 15V ac models use a wall-mount tran sformer (Prod- uct Cod e 28410 ?) equippe d with a No rth Amer ican plug . (An appr opriate a dapter may be used in oth er countri es supplyi ng 1 15V ac line vol tage.
Telen eti cs 21 85 3-27 Alternative power supplies that wer e not approved at the ti me of this publication may b e available; consult your lo cal distributor for special requirem ents.
Telen eti cs 21 85 3-28 OPERATION Once you successful ly power-up yo ur 2185, it is fully operational and does not requir e any further initialization procedures. Once con figured, your 2185 operate s unattended wit hout operator inter - vention. Occasiona l monitoring of the LED status indicators is recommended.
4-1 Chap ter 4 Operation and Configu ration MAINTENANCE PHILOSOPHY Prevent ive Maintena nce There is no preventive ma intenance necessary on your T elenetics 2185 other than the occ asional removal of dust that a have settled on the unit. Use a soft cloth to remove dust that may have buil t up on the outside of the unit.
Telen eti cs 21 85 4-2 If all equi pmen t in the n etwork is functionin g p roperly and anti-stream- ing al arms are occurri ng, the probab le cause is that the subchannel devices are sending valid messag es longer than 23 seconds. If this is the case, disable an ti-streaming.
Telen eti cs 21 85 4-3 When contacting T elenetics, you receive a T elenetics Return Material Authorization (RMA) Control Number . Th is RMA Contro l Number should be clearly marked o n t he return equipme nt shipping container (s) for easy identification and fast er service.
Telen eti cs 21 85 4-4.
5-1 Chap ter 5 Ordering Informatio n INTRODUCTION This chapter provides T elenetics pro duct and ordering information for the 2185. Ordering Information T able 5-1 lists T elenetics 2185 products f or and accessories. Any of the items listed may be or dered from your au thori zed T elenetics repr esenta- tive.
Telen eti cs 21 85 5-2.
Glossary-1 Glossary This glossary defin es terms used in the 2185 Operator' s Guid e. ACTIVE LED indicator l amp that i lluminate s when the subc han nel in dicate d gains ac ce ss to t he main channel . ALARM LED indicator l amp that i lluminate s when the an ti- streaming timer automa tically disab les a subc han nel.
Telen eti cs 21 85 Glossa ry-2 Contro ller Devi ce responsi ble for poll ing term inals and routin g message s in a m ultipoi nt envi ronme nt. Contr ol S ignal Contention Mo de Subchan nels co ntend for use of t he main c hannel t o send data to the CPU or co ntr oll e r.
Telen eti cs 21 85 Glossary-3 RDY Ready . LED i ndicat or lamp th at illuminates w hen the m ain chan nel inbound DS R or DTR is ON. Str aigh t-T hrough Cable Cable termi nated with 25-pin E IA con nector a t eac h end. Co nnecti ons a re made on a p in-to- pin b asis.
Telen eti cs 21 85 Glossa ry-4.
INDEX-1 Inde x A Anti-st reamin g 1-3 Anti-stream ing alarm, reco very 4-1 Appli cation s 1-3 cascadin g the 2185 1-6, 1-8 co-located terminal s 1-6 modem-sharing mode 1-5 port-s haring mode 1-4 C Cab.
INDEX-2 Inde x (contin ued) I Indicators 3-1 Inside fro nt pa nel 3- 2 Installatio n proced ure 2-3 cabling 2-3 equipm ent assembly 2-3 mechanical 2-3 required to ols 2-3 Installation t ools 2 -3 Inst.
Inde x (contin u ed) INDEX-3 Site pre para tion 2-1 Specificatio ns 1-9 Subc hannel co nten tion 1- 2 Switche s 3-3 switch one 3-3 switch thre e 3-14 switch two 3-4 Sync hronou s data ret iming bu ffe.
INDEX-4 Inde x (contin ued).
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Telenetics 2185 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Telenetics 2185 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Telenetics 2185 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Telenetics 2185 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Telenetics 2185, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Telenetics 2185.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Telenetics 2185. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Telenetics 2185 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
