G.703 Modular Campus Driver Interface Card
Contents
1. If you want to open the host equipment the network connection must be disconnected prior to accessing any internal parts that may carry TNV and the following instructions should be followed exactly 1 Turn off the modem s power switch Leave the power cord plugged into a grounded outlet to keep the unit ground The line connection should also be disconnected before removing the module 2 Loosen the two thumbscrews on the card by turning them counterclockwise 3 Grasp the thumbscrews and gently pull the card from the unit Apply equal force to the thumbscrews to keep the card straight as you remove it 4 3 Connection to the Twisted Pair Interface The G 703 Modular Campus Driver Interface Card supports communication between itself and a G 703 PCM network at distances up to 4000 feet 1219 m using 24 AWG twisted pair cable To function properly the Card requires two twisted pairs of metallic wire These twisted pairs must be unconditioned dry metallic wire between 22 and 26 AWG 0 4 mm to 0 6 mm diameter solid conductors Higher gauge wire may limit distance Flat modular telephone type cable is not acceptable The RJ 45 connector on the Card s twisted pair interface is pre wired according to the signal pin relationships shown in Figure 4 2 Connection of the Card to a CSU DTE requires a crossover twisted pair cable Connection of the Card to a PCM telecommunication network requires a straight through pair cable Notice2. BL ACK BOX ME481C G703 G 703 Modular Campus Driver Interface Card q 5 b 5 Campus Driver Intertace Card CUSTOMER Order toll free in the U S Call 877 877 BBOX outside U S call 724 746 5500 SUPPORT FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 INFORMATION Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD FEDERAL COMMUNICATIONS COMMISSION AND CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates uses and can radiate radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such interference when the equipment is 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 measures may be necessary to correct the interference Changes or modifications not expressly approved by the party responsible for comp
3. 12 Ds COMMPUTAUO PE 13 4 Installation ic vege tu Pe eese ep ee FEN uv ee ERE E Haa 14 4l Installing the Card aeree 14 4 2 Removing the Existing Interface Card 16 4 3 Connection to the Twisted Pair 1061466 16 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 1 Specifications Applications 64K G 703 codirectional PCM network extension or network replacement Connector Symmetrically balanced pair 4 wire RJ 45 female Interface Entire module plugs into 2 or 4 Wire Campus Driver ME480A or ME485A Operating Modes Speed Supports octet mode or clear channel mode Co directional timing RX recovered 64 Kbits 500 ppm Octet Timing auto detect on receiver Line Coding AMI with block violation for octet timing Timing Modes Supports network timing mode or modem timing mode Transmit Level 2 0V differential into 100 ohms nominal Load Impedance 120 ohms Input Signal Level 0 to 10 dB Jitter Performance 14 823 0 05UI jitter for network extension applications Isolation 2000 VRMS isolation transformer coupled PC Board Dimensions 2 95 x 3 2 Compliance Class A EN 50081 1 Emissions EN 50082 1 Susceptibility CTR 14 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 2 Introduction 2 1 Description The G 703 Modular Campus Driver Interface Card converts data from a 64K G 703 network into a Transistor Transistor Lo
4. Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 9 El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n 10 El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 11 El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 13 Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos poniendo particular atenci n a los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de
5. The G 703 Modular Campus Driver Interface Card is equipped with four DIP switches that allow configuration of the unit to match your application These DIP switches are located on the top side of the module Refer to Figure 3 1 for a description of the DIP switches location on the module and a summary table detailing their settings Figure 3 1 Top Side of the Card DIP Switch Location Switch On Off 1 1 Modem Timed Network Timed 1 2 Not Used Not Used S1 3 Clear Channel Mode Octet Mode S1 4 Normal Operation Reserved for Factory Use NOTE S1 4 must be On The default settings for DIP switch S1 are Pin 1 2 3 4 Setting On On On On 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 4 Installation Once the Card is properly configured it is ready to be installed into a Campus Driver This section tells you how to properly connect the Interface Card 4 1 Installing the Card Safety Precautions The telecommunications interface is intended to be connected to Telecommunication Network Voltage INV circuits that may carry dangerous voltages Therefore for safety measures it is imperative that the following instructions be followed exactly The Card has a 50 pin card edge connector on one side and an RJ 45 connector on the other side The following instructions show you how it plugs into the back of a Campus Driver 1 Make sure the host modem s power switch is off Leave the power cord pl
6. Any modular twisted pair cable connected to the G 703 Modular Campus Driver Interface Card must be shielded cable and the outer shield must be properly terminated to a shielded modular plug on both ends of the cable 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD Figure 4 2 Twisted Pair Interface Signal Pin Relationship Pin Signal Name Direction Function In reference to Card 1 RD T IN Receive data in tip 2 RD R IN Receive data in ring 3 Not used 4 TD R OUT Transmit data out ring 5 TD T OUT Transmit data out tip 6 Not used 7 8 Not used BLACK BOX Copyright 1997 Black Box Corporation rights reserved 1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746
7. E First Modem G 703 INTF Network Timed Host Modem Mode Internal Timing Figure 2 2 Network Replacement Configuration 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 2 4 Timing Mode Selections Based on the timing arrangements and clock sources mentioned previously there are two timing modes in which the interface can work These two modes select the clock sources mentioned above and determine which clock gets smoothed Network Timed This sets the interface to pass the smoothed recovered timing to the modem as XCLKI with the RX data as TXD1 and also to the G 703 TX side Modem Timed This sets the interface to use the modem s TX timing recovered or internal source to send the RX data as TXD1 to the modem and to smooth the modem s recovered timing for transmitting on the G 703 TX side In both cases the transmitter uses the smoothed clock 2 5 Operating Mode Selections There are two data modes in which the interface passes data and timing Octet Mode Data is passed at a 128K rate This mode preserves the byte integrity associated with Octet timing The Octet timing frame is embedded in the data Clear Channel Mode Data is passed at a 64K rate This does not preserve the byte integrity associated with Octet timing Instead an Octet timing alarm on or off is passed over the modem similar to the way signaling leads are passed 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 3 Configuration
8. ck Timing TX CSU DTE Second Modem TX TX bo TX bp Smoothed Network First Modem G 703 INTF Host Modem Network Timed Interface Mode External Timing Figure 2 1 Network Loop Extension Configuration Timing of Application 2 Network Replacement The first modem uses an internal timing source and supplies the timing for the entire system The first G 703 recovers the timing and clocks the data into the FIFO The TX of the first modem takes its internal clock and sends it TXCLK1 to the G 703 FIFO for data TXD1 The RX of the second modem recovers the clock and presents a jittery clock and data to the second G 703 s transmitter It has to smooth the clock before it uses the clock to transmit 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD The RX of the second G 703 recovers the timing and clocks the data into a FIFO The TX of the second modem sends the second modem s recovered clock TXCLK1 to the G 703 FIFO for data TXD1 The RX of the first modem uses its internal clock RXCLK1 to send data RXD1 into the FIFO The TXof the first G 703 smooths the first modem s recovered timing and sends it to the FIFO for data Both G 703 interfaces are in Modem Timed mode See Figure 2 2 G 703 INTF G 703 TX Host Modem Modem Timed Smooths RX Recovered Mode Modem Clock Timing G 703 TX CSU DTE Second Modem G 703 TX Smooths RX Modem Clock 2 2 4 Wire TX Smoothed CSU DT
9. e smoothed clocks referred to in this section indicate that a phase locked VCO 15 used to create a jitter free clock that is locked to a source clock There are two typical applications that result in two different timing modes for the G 703 interface These are illustrated below Timing of Application 1 Network Loop Extension In this application the network supplies the timing for the entire system The first G 703 recovers the timing It has to smooth the clock before it supplies the clock XCLK1 and the data TXD1 to the first modem transmitter so it can directly use the clock The RX of the second modem recovers the clock and presents a jittery clock RXCLK1 and data RXD1 to the second G 703 s transmitter This transmitter has to smooth the clock before it uses the clock to transmit The RX of the second G 703 recovers the timing and clocks the data into a FIFO The TX of the second modem takes its recovered clock and sends it TXCLK1 to the G 703 FIFO for data TXD1 The RX of the first modem recovers the timing and clocks RXCLKI the data RXD1 into a FIFO The TX of the first G 703 uses the first G 703 s recovered clock and sends it to the FIFO for data The first G 703 interface is in Network Timed mode The second is in Modem Timed mode See Figure 2 1 on the next page 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD G 703 INTF G 703 TX Host Modem Modem Timed Smooths RX Recovered Mode Modem Clo
10. gic TTL compatible signal that is transported by the 2 or 4 Wire Campus Driver or a similar 2 or 4 wire short haul modem that has identical pinouts and edge connector style see NOTE below The G 703 network provides a 64K co directional three level signal using either octet timing or clear channel mode The Card will detect and pass either octet timing preserving byte integrity over a 128 Kbps modem link or clear channel timing without byte integrity preservation over a 64 Kbps modem link The Card is capable of handling either network timing or modem timing so it can be used for either network extension or network replacement configurations Clock jitter is attenuated according to G 823 NOTE If a host other than a 2 or 4 Wire Campus Driver is used then the modem should have more than 75 mA of available current at 5 DC on the edge connector 2 2 Features Provides 64K codirectional interface compliant with the G 703 electrical specs Offers a single TX RX interface with a standard RJ 45 connector as specified in TBR 14 Option to work in two timing modes Clear channel or octet timing Complies with ITU CCITT G 823 Control of Jitter Point to point distance up to 4000 feet 1219 m using 24 AWG twisted pair 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 2 3 System Description This section describes the features that the entire system G 703 interface combined with the modems will support NOTE Th
11. las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n 18 Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD TRADEMARKS USED IN THIS MANUAL All applied for and registered trademarks are the property of their respective owners CE NOTICE The CE symbol on your equipment indicates that it is in compliance with the Electromagnetic Compatibility directive and the Low Voltage Directive LVD of the Union European EU 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD Contents Chapter Page 7 2 dies eto e a tetto ue Lasso E xde era Ee a deese tao Aea 8 PAN NES PR 8 29 TOatufescuscxusebsseteitisied E upedite sse cioe b t este eet ELE A A 8 2 9 System DES Crip elon ueneno toe eer oan soto I Erei AS 9 2 4 Timing Mode Selec ssrin 12 2 5 Operating Mode Selections
12. liance could void the user s authority to operate the equipment This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of Communications Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de classe A prescrites dans le R glement sur le brouillage radio lectrique publi par le minist re des Communications du Canada 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado 2 Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura 3 Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas 4 Todas las instrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante I El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8
13. ugged into a grounded outlet to keep the unit grounded The telephone cord must remain disconnected from the telecommunications system until the card has been installed in the host 2 Hold the Card with the faceplate toward you and align it with the guide slots in the Campus Driver s rear panel 3 While keeping the Card s faceplate parallel with the Campus Driver s rear panel slide the Card straight in so that the card edge contacts line up with the socket inside the chassis Refer to Figure 4 1 on the next page NOTE The card edge connector should meet the socket when it is almost all the way into the chassis If you encounter a lot of resistance remove the module and repeat Steps 2 and 3 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD Figure 4 1 Installing the Interface Card 4 With the card edge contacts aligned with the socket firmly seat the Card by using your thumbs to apply pressure directly to the right and left edges of the faceplate Applying moderate and even pressure should be sufficient to seat the Card You should hear it click into place 5 To secure the Card in place push the thumbscrews into the chassis and turn the screws clockwise to tighten 6 The enclosure provides the necessary protection of the operator and the power can now be applied to the Campus Driver and then the network connected 6 703 MODULAR CAMPUS DRIVER INTERFACE CARD 4 2 Removing the Existing Interface Card Safety Precautions
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