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Black Box Corporation

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JANUARY 1997

LT221A
LT222A

Fiber Optic Converter I

Fiber Optic Converter II

POWER

DATA

CONFIG

Summary of Contents for LT221A

Page 1: ...chnical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbo...

Page 2: ...operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measu...

Page 3: ...camente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuari...

Page 4: ...iado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconect...

Page 5: ...6 FIBER OPTIC CONVERTERS I II TRADEMARKS All applied for and registered trademarks are the property of their respective owners...

Page 6: ...9 3 HARDWARE 13 3 1 Front Panel 13 3 2 LEDs 14 3 3 RJ 45 Connectors 14 3 4 Config Switch 16 4 INSTALLATION 17 4 1 Network Planning 17 4 1 1 Fiberoptic Sections 17 4 1 2 Copper Sections 18 4 1 3 Conver...

Page 7: ...ators 1 Power and 1 Data Speed 4 or 16 Mbps Connectors LT221A 1 RJ 45 female 2 ST LT222A 2 RJ 45 female 4 ST Power 115 230 VAC switch selectable 6 watts Size 1 7 H x 11 4 W x 4 D 4 3 x 29 x 10 2 cm We...

Page 8: ...esirable for net works requiring higher security 2 1 Main Ring Applications Fiber Optic Converters are used in pairs The Fiber Optic Converter II converts the signal of both the primary and backup pat...

Page 9: ...ed making the functional main ring length only 600 feet 182 9 m Distances vary depending on network configuration and copper cable type An application using the Fiber Optic Coverter II is shown in Fig...

Page 10: ...11 CHAPTER 2 Introduction MAU MAU Optical MAU MAU MAU MAU MAU Optical Optical LT222A LT222A LT222A Figure 2 3 Token Ring Network Using Fiber Optic Converter II...

Page 11: ...extending the main ring using two Fiber Optic Converters II and a MAU MAU MAU Building A MAU MAU LT222A Building B MAU Optical Extending the main ring LT222A RI RO RO RI MAU MAU Building A Building B...

Page 12: ...e Fiber Optic Converter II connectors in several ways by using the Config switch on the Converter s front panel The RJ 45 connectors can be configured to connect to either the Ring In or Ring Out port...

Page 13: ...4 RJ 11 male connectors may be used instead of RJ 45 male connectors on the twisted pair cable connected to the RJ 45 connector Whether you use RJ 45 or RJ 11 male connectors the transmit and receive...

Page 14: ...onnector A D in the same pair B C in the same pair Figure 3 3 RJ 45 Copper Connector Transmit and Receive Pins RJ 45 Connector Pin Function Configuration A Pins B Pins Ring In Transmit Receive Ring Ou...

Page 15: ...a lobe extension application When the switch is on the On position phantom voltage is presented The Station switch is used in lobe extension applications when the converter is on the station end of t...

Page 16: ...g using Type 3 cable is 72 The maximum number of attaching devices on a ring using Type I or Type 2 cable is 260 Source routing token ring bridges may be used to more efficiently partition the network...

Page 17: ...ll devices have been placed and the proper cabling has been routed to all areas where it will be needed use the following procedure to finish the installation If you are using Converters to extend an...

Page 18: ...up O PEN 1 2 3 4 Switch 1 up Switch 2 down Switch 3 up Switch 4 up Figure 4 3 Config Switch Settings for Main Ring Installations 2 Plug the power cords into the backs of all Converters and into elect...

Page 19: ...installation is complete See Chapter 3 for a description of LED operation 4 3 Installation Between a MAU and a Station The Fiber Optic Converters can be used to extend individual station lobes The net...

Page 20: ...2nd pair 3rd pair Optical cables and Connectors 4th pair TX RX LT222A LT222A Figure 4 5 Connecting the Cable to the Converters 4 Configure each Converter using the Config switch on its front panel Th...

Page 21: ...2 if used must also connect to the station 5 Turn off the stations to which the lobes will attach and connect the copper cable between the stations and the Converter Connect the copper cable between t...

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