Black Box ME444A-R3 User's Manual
Contents
1. 19 2 to 256 5 AS 400 AS 400 Figure 2 2 Point to point application 256 KBPS LINE DRIVER V 35 RS 530 X 21 4 wire twisted pair DDS 56 kbps External Receive clock clock CSU DSU CSU DSU 256 kbps 256 kbps Sync host Line Driver Line Driver sync host Tail circuit Figure 2 3 Tail circuit application V 35 interface V 35 interface 4 wire twisted pair cable 64kbps 7 V 35 256 kbps Line Driver V 35 interface IBM 3274 IBM S 3X controller V 35 cable 256 kbps Line Driver IBM 3274 controller V 35 interface V 35 cable 56 kbps Line Driver IBM 3274 controller Figure 2 4 Multipoint application CHAPTER 3 Configuration 3 Configuration This chapter explains how to configure your standalone or rackmount card line driver After you configure it see Chapter 4 for how to install it Chapter 5 for how to operate it and Chapter 6 for how to test the system 3 1 Placement of the Standalone Version Place the 256 kbps Line Driver standalone model within 5 ft 1 5 m ofa grounded easily accessible AC outlet The outlet should be capable of providing either 115 VAC for the M2. 22 4 2 Installing the 256 kbps Rackmount Card Version 24 4 3 Connecting Data Cables a irate ETE o 33 4 32 POWER CODNECUONG s autein t Rete ER 33 4 3 2 LINE Connection erret terere dee trends caigo 43 9 DIE Corimection OF 5 a ass 36 5 1 Controls and Indicators 36 5 2 Operating Procedure 38 Troubleshooting edite eere eremi 0 1 LOOP Test ceto e ana ente ert ed 6 2 Bit Error Rate Tester BERT 39 6 3 The Modem 41 6 4 Local Analog Loopback emen 41 6 5 Remote Digital Loopback eee 43 6 6 Local Digital Loopback 44 6 7 Calling Black Box ai A a Sa a M Susa 45 6 8 Shipping and Packaging 2 46 Appendix Maximum Distances 2 47 256 LINE DRIVER V 35 RS 530 X 21 1 Specifications Compliance FCC Class Class classe Protocol Synchronous or asynchronous Clock Source Internal external from attached device or receive clock derived from the receive signal Flow Control None Operation 4 wire full or half duplex point to point or multipoint Data Rate Sync 19 2 32 48 56 64 72 96 112 128 144 192 or 256 kbps user selectable Async 19 2 28
3. Local Analog Loopback LL Test Mode TM 142 25 KK ke Black Box often assigns these signals to these M 34 pins but your DTE might use different pins if it supports these signals at all Consult your DTE s manual CHAPTER 4 Installation Table 4 4 Pinout of the V 35 standalone s M 34 connector SIGNAL ITU TSS LEAD V 35 NAME ABBREV CIRCUIT TYPE PIN Frame Protective Ground FGND 101 A Signal Ground SGND 102 B Send Data SD 103 5 Receive Data RD 104 A R B T Request to Send RTS 105 C Clear to Send CTS 106 D Data Set Ready DSR 107 E Data Terminal Ready DTR 108 H Received Line Signal Detector RLSD 109 F a k a Carrier Detect CD Serial Clock Transmit External SCTE 113 0 a k a External B w Serial Clock Transmit SCT 114 A Y a k a Transmit Clock TC B AA Serial Clock Receive SCR 115 A V a k a Receive Clock RC B X Remote Digital Loopback RL 140 HH Local Analog Loopback LL 141 JJ Test Mode TM 142 KK 256 LINE DRIVER V 35 RS 530 X 21 Table 4 5 Pinout of the RackNest 2 14 s DB25 connector when ME445C X21 is installed SIGNAL NAME ABBREV Shield n a ITU TSS CIRCUIT LEAD TYPE DB25 RACK NEST PIN DA15 NORM X 21 PIN Ground G a k a Signal Ground SGND Transmit T Receive R 104 A 3 4
4. Table 3 1 continued User configurable options Element Function Possible Standard Settings Factory Setting J4 Select the delay in milliseconds that 0 RTS CTS occurs during RTS to CTS transitions 9 9 ms DLY jumper Do nat select 0 for multipoint applications 70 J5 Turn V 54 delay ON or OFF When you turn ON V54 DLY it ON V 54 delay prevents multiple loopback OFF OFF jumper of tail end circuits J6 Enable or disable the DIG ANA and REM ON ON enabled SW EN loopback control buttons on the unit s front OFF jumper panel J7 Enable or disable electronic control of EN EN enabled RLB DTE remote digital loopback testing through the DIS jumper DTE interface J8 Enable or disable electronic control of EN EN enabled ALB DTE local analog loopback testing through the DIS jumper DTE interface J9 Select the level in dBm of receive 6 RCV LVL input from the line 0 0 dBm jumper J10 Select the receive line impedance In 150 9 150 ohms RCV IMP multipoint applications it is advisable to HIGH jumper set the master modem and the last modem in the line to 150 Q and all others to HIGH J11 Enable or disable the remote power ON ON RPF failure feature OFF jumper J12 Select the level in dBm of transmit 6 LVL output to the line 0 0 dBm jumper J13 Select the transmit line impedance in 150 9 150 ohms XMT IMP ohms In multipoint applications it is a LOW jum
5. x 9 RTS RTS TS INTERNAL POWER pH CTS 4 DELAY TIMING SUPPLY 4 4 Le EXT EA CNTL O RPF F sb GENERATOR REM gt lt COMMAND GENERATOR DIG SELECTABLE ng Y TRANSMIT LEVEL TXD b zig ENCODER s OPTIONAL m L x 8 O MODULATOR S gt XMT FILTER 9 gt TEST Ir gt DG 1 y 0 ANA gt O gt ga RLB i X21 V 54 i COMMAND BUFFER 1 DELAY DECODER 1 u i n RECEIVE 1 FILTER RXD e e pe lt 1 wo DECODER EQUALIZER Le 71 T IET d ILLA bei BERT ERROR R LPBK TIMING RXC 4 TIMING ja DATA 4 lt CARRIER lt 33 R DETECT 57 69 2 os RPF mA Lar RPF RESET DECODER 4 Figure 2 1 Line driver block diagram 2 2 1 ENCODER MODULATOR The encoder modulator receives data from the DTE then modulates the data using the conditional diphase modulation technique You can configure the encoder to operate in one of three modes 4 wire full duplex point to point 4 wire half duplex point to point 4
6. B 16 11 Control C 105 A 4 3 a k a Request to Send RTS B 19 10 Indication 1 109 A 8 5 a k a Carrier Detect CD 10 12 RS 530 Transmitter Signal Element 113 A 24 71 Timing DTE Source TSETT T B 11 141 Signal Timing S 114 A 15 6 B 12 13 This pinout follows the TIA RS 530 standard TStandard X 21 does not support an external clock and specifies that DA15 Pins 7 and 14 should be used for the Byte Timing B A and B signals Because Byte Timing is hardly ever used but an external clock is often necessary for today s data communication many Black Box devices are designed to this modified specification in which the RS 530 external clock signal replaces Byte Timing CHAPTER 4 Installation 4 3 Connecting Data Cables After you set the standalone line driver s internal controls it s ready to be cabled for operation Its electrical connectors are located on its rear panel These consist of a female V 35 interface connector labeled DTE a 5 screw terminal block and an 320 AC inlet that contains an integral fuse compartment The V 35 interface connector a 34 pin M block female carries input output data clock signals and control signals between the line driver and the DTE or DCE refer to Table 4 4 The terminal block has five screws for connecting transmit and receive lines the transmit pair where XMT is indicated for data output from the unit the receive pair where RCV is indicated for d
7. BLACK BOX lI RE RR l l ME444A R3 ME444AE R3 ME444A 530 R3 ME444AE 530 R3 ME445C 35 ME445C 530 ME445C X 21 256 kbps Line Driver V 35 RS 530 or 21 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 FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA 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 B 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 respon
8. 8 38 4 57 6 or 115 2 kbps user selectable Maximum Distance See the tables in the Appendix User Controls 4 Front mounted buttons 1 DIG 1 ANA 1 REM 1 1 Internal data rate screwdial 14 Internal jumpers and 1 internal 3 position DIP switch for timing testing signal levels impedances and other features Diagnostics V 54 compliant loopback tests V 52 compliant BERT Standards Loopback tests ITU TSS V 54 BERT ITU TSS V 52 Leads Signals Supported See Tables 4 2 through 4 5 75 500 hours Interfaces Line side Proprietary Device side ITU TSS V 35 Connectors ME444A R3 ME444AE R3 1 34 pin M block female 1 5 position terminal block ME444A 530 R3 ME444AE 530 R3 ME445C 530 ME445C 35 445 21 1 DB25 female 1 5 position terminal block Indicators 7 Front mounted LEDs PWR power RTS TD RD DCD TEST ERR error Temperature Tolerance 32 to 122 F 0 to 50 C Humidity Tolerance Up to 9076 noncondensing CHAPTER 1 Specifications Maximum Altitude 8000 ft 2438 4 m Enclosure High impact plastic Power ME444A R3 Directly from outlet through detachable 5 ft 1 5 m power cord included Optimal input 115 VAC 60 Hz Input ranges 103 5 to 126 5 VAC 47 to 63 Hz Consumption 5 watts ME444AE R3 Directly from outlet through detachable 5 ft 1 5 m power cord Optimal input 230 VAC 60 Hz Input ranges 207 to 253 VAC 47 to 63 Hz Consumption
9. calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor 11 Elaparato 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 STATEMENT 12 Precauci n debe ser tomada tal manera que la tierra fisica 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 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 o C Elaparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempeno E Elaparato sido tir
10. communicate across will vary depending on the data rate and the thickness gauge of the wires In multipoint applications it will also vary depending on the number of slaves on the line Approximate maximum distances for different combinations of these factors are listed in the tables below Please be aware that these numbers are only approximations the distances shown might not be attainable for all applications Also maximum distances will always be less than those listed when line drivers are used in noisy environments Table A 1 Approximate range Baud Rate 19 AWG 22 AWG 24 AWG 26 AWG kbps 0 8 mm 0 6 mm 0 5 mm 0 4 mm km miles km miles km miles km miles 256 37 23 2 85 8 2 25 1 4 1 9 1 2 192 6 3 7 45 28 3 5 22 27 1 7 144 106 66 6 75 2 4 5 28 34 2 1 128 124 77 73 45 5 8 1 3 6 2 2 1152 128 8 7 65 8 5 25 33 8 24 112 128 8 8 5 5 5 34 4 2 5 96 13 8 1 83 2 6 37 415 26 72 15 9 3 94 58 6 25 39 43 2 7 64 17 6 10 9 11 6 8 7 5 47 53 3 3 57 65 188 117 11 75 3 8 5 6 3 5 56 18 8 11 7 11 75 3 8 5 6 3 5 48 194 1 122 7 6 8 25 1 5 8 3 6 38 4 20 12 4 125 78 8 5 53 6 3 7 32 20 5 12 7 12 85 8 875 54 62 3 9 28 88 120 5 7 12 85 8 875 54 2 3 9 19 2 23 14 3 14 8 7 9 75 1 7 4 3 Async baud rate Sync async baud rate BLACK BOX Copyright 2004 Black Box Corporation rights reserved 1000 Park Drive Lawr
11. on each side to fasten the assembled units to the side rails of the 19 inch rack Figure 4 2 Installing two units in a 19 inch rack 256 KBPS LINE DRIVER V 35 RS 530 X 21 4 2 Installing the 256 kbps Line Driver Rackmount Card Version THE RACKNEST 2 14 ILLUSTRATED You will be installing the line driver card in the RackNest 2 14 as shown in Figure 4 3 The front and rear panels of the RackNest are shown in Figure 4 4 the numbered connectors controls and indicators are described in Table 4 1 Figure 4 3 Installing a card in the RackNest 2 14 CHAPTER 4 Installation 8 0000000000000 SUL Figure 4 4 The RackNest 2 14 illustrated 256 LINE DRIVER V 35 RS 530 X 21 Table 4 1 Descriptions of RackNest 2 14 components Control Indicator or Connector Function 1 Card Slots Slots for installation of compatible cards slot no 1 located at the left hand side Unused slots are closed with blank panels 2 Power Supply Module Provides power to modules installed in the enclosure 3 ON Indicator Lights when power supply is operating 4 Chassis Ground Terminal Connector for attaching other grounds devices etc to the RackNest s chassis ground optional 5 Power Connector Power connector with integral fuse 6 Main Channel Connectors J1 DB25 connectors for the module DTE connecti
12. wire multipoint The appropriate mode is determined by the setting of two jumpers CARRIER J2 and RTS CTS DLY J4 For multipoint applications two additional jumpers must be XMT IMP J13 and RCV IMP J10 See Section 3 3 for a more detailed explanation of the correct jumper settings 256 LINE DRIVER V 35 RS 530 X 21 NOTE In multipoint applications do not use the 0 msec option for the 5 5 delay 2 2 2 MODUIATION TIMING This circuit supplies the transmit clock to the encoder Three clock sources are available on the XMT CLK jumper J3 INT Internal clock From the modem s internal crystal oscillator e EXT External clock From DTE RCV Receive clock Recovered from the receive signal There is also an ASY asynchronous setting but this has no function and should not be selected 2 2 3 SIGNAL LEVELS Two options are available for the transmit and receive signal levels 0 and 6 dBm You can control the transmit level with the XMT LVL jumper You can control the receive level with the RCV LVL jumper 2 2 4 RECEIVER The receiver comprises several circuits as shown in the block diagram see Figure 2 1 The RECEIVE FILTER which removes all the out band frequencies The EQUALIZER which comprises several equalizers activated according to data rate The digital Automatic Gain Control AGC which automatically compensates for the attenuation of the line CH
13. 5 2 INDICATOR FUNCTION PWR Green LED is on when power is on RTS Yellow LED is on when terminal activates Request to Send TD Yellow LED is on when steady SPACE is being transmitted It flickers when data is transmitted Yellow LED is on when steady SPACE is being received It flickers when data is received Yellow LED is on when a valid receive signal is present Red LED is on when the LMD MR256 is in any of the loopback modes LED goes ON when PATT switch is activated and then dims If there are errors in the test pattern the LED blinks or remains ON 5 2 Operating Procedure The line driver operates entirely unattended although we recommend that you monitor its LEDs occasionally To turn the unit off you must unplug its power cord from the outlet it has no power switch If you want to reconfigure the line driver for a different type of operation make very sure to unplug the unit first After the unit is powered down change the settings of its internal controls as necessary following the instructions in Section 3 3 Troubleshooting This chapter explains system test and fault isolation procedures The line driver provides local loopback and remote digital loopback in compliance with the V 54 standard Unless you disable them the unit s loopback tests be activated manually from the unit s front panel and the local analog and remote digital loopbacks can be activated e
14. 5 watts ME445C From the RackNest 2 14 Consumption 5 watts Size ME444A E R3 1 8 H x 7 6 W x 9 6 D 4 6 x 19 3 x 24 4 cm but the buttons protrude up to 0 3 0 8 cm from the front panel and the connectors protrude up to 0 8 2 cm from the rear panel ME445C 6 2 H 0 9 W 9 D 15 7 x 2 3 x 22 9 cm Weight ME444A E R3 3 1 Ib 1 4 kg ME445C 0 8 Ib 0 4 kg 256 LINE DRIVER V 35 RS 530 X 21 2 Introduction The 256 kbps Line Driver is a short range modem for synchronous or asynchronous transmission full or half duplex over unconditioned lines With a range of up to 11 8 miles 19 km the line driver operates at user selectable synchronous data rates from 19 2 to 256 kbps or asynchronous data rates from 19 2 to 115 2 kbps The line driver is available in standalone V 35 or RS 530 ME444A E R3 or rackmount card V 35 RS 530 21 ME445C versions The line driver uses conditional differential diphase modulation EUROCOM Std D1 to provide immunity from background noise eliminate normal line distortion and enable efficient transmission and reception of serial data over twisted pair cable The modem is coupled to the line through isolation transformers which in conjunction with protective circuitry safeguard against AC or DC overvoltages With this protective circuitry the line driver can operate even when DC is connected to the line Transmit timing is provided internally deriv
15. ANAS 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 bano 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 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 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
16. APTER 2 Introduction 2 2 5 V 54 DIAGNOSTICS V 54 loops are activated manually with the front panel buttons or through the DTE interface The buttons and the DTE interface can be enabled or disabled separately by jumpers J7 and J8 shown in Figure 3 1 and described in Table 3 1 When you use the line driver as a tail end to a digital network the V 54 DLY jumper in the modems located close to the network should be set to ON to prevent multiple loopbacks The delay switch is used to prevent the last modem from receiving the complete V 54 data sequence and in turn being induced into a loop 2 2 6 TEST PATTERN GENERATOR AND RECEIVER This feature allows for easy and quick testing of the local modem as well as the communication link When the PATT button on the front panel is pressed the circuit sends and checks a standard 511 bit pseudo random pattern If the modem encounters errors the ERR LED remains ON or blinks The test can be carried out in local analog loopback in remote digital loopback or in normal point to point operation opposite a remote line driver modem Press the PATT pushbutton on the remote unit or connect a Bit Error Rate Tester that uses the standard 511 bit pattern 2 3 Applications The diagrams on this page and the following pages illustrate the line driver operating in various applications 4 wire Up to 11 8 mi 19 km MIA Tc 256 kbps 256 kbps Line Driver Line Driver
17. E This connector is a standard 34 pin M block M 34 female The pinout of this connector is shown in Table 4 4 CHAPTER 4 Installation To connect the line driver to a V 35 DTE or DCE use an appropriate cable that is pinned correctly straight through for DTE properly crossed for DCE Run this cable from the other device to the line driver and attach it to the line driver s interface connector Your line driver should now be ready for continuous operation 256 KBPS LINE DRIVER V 35 RS 530 OR X 21 5 Operation This chapter contains a list of the controls and indicators and their functions as well as a brief description of how to operate the unit Installation procedures must be completed and checked before you attempt to operate the line driver 5 1 Controls and Indicators The front panel of the standalone line driver is shown in Figure 5 1 below The front panel of the rackmount card line driver is shown in Figure 5 2 It contains all of the unit s external controls and indicators The functions of the controls are described in Table 5 1 and the meanings of the indicators are described in Table 5 2 In each of these tables the letters and numbers under the heading Item correspond to the letters and numbers in Figure 5 1 or 5 2 DIG ANA REM PWR RTS TD RD DCD TEST ERR ao a FCC AAA 1 if LAA AA a gt te ee e 1 2 3 4 5 6 7 D Figure 5 1 The front p
18. E444A R3 model or 230 VAC for the ME444AE R3 model The line driver is designed to be placed on a tabletop or bench and is shipped completely assembled Allow at least 36 91 4 cm of frontal clearance for operation and access for maintenance You also need at least 4 10 2 cm of clearance at the rear of the unit for signal lines and interface cables 3 2 Installing the Card Version in the RackNest 2 14 The RackNest 2 14 is a special 19 rack component designed to host a number of our short haul modems and line drivers It consists of a rack chassis with one or two power supplies into which you can plug as many as 14 modem or driver cards The nest s rear panel consists of fourteen five screw terminal blocks and fourteen connectors 1 Each terminal block 1 provides four screws for connecting nest to nest G 703 transmit and receive lines the transmit pair can be connected to the terminals marked XMT and the receive pair can be connected to the terminals marked RCV plus a fifth screw for ground connection Each interface connector J1 is a DB25 female The pinning of this connector depends on the type of card installed in the corresponding slot because the cards will present and expect different signals on different pins For the V 35 model of the line driver card ME445C 35 the pinning is a special V 35 on DB25 variant for the RS 530 X 21 models the pinning is RS 530 Refer to Tabl
19. PATT is pressed the V 35 interface is functionally disconnected 256 LINE DRIVER V 35 RS 530 X 21 PATT PRESSED PATTERN GENERATOR PATTERN TESTER Figure 6 1 BERT using loops DEPRESSED PATT DISCONNECTS DEPRESSED EXTERNAL DTE PATTERN PATTERN GENERATOR TESTER PATTERN PATTERN TESTER GENERATOR Figure 6 2 Two line drivers doing end to end BERT CHAPTER 6 Troubleshooting 6 3 The Modem Self Test To verify that the line driver itself is operating correctly initiate the modem self test by pressing the PATT and ANA buttons refer to Figure 6 3 below 1 Press ANA to start local analog loopback Both the TEST and DCD LEDs should light If the DCD LED doesn t light make sure that the RTS signal is not OFF low while the CARRIER jumper is OFF 2 Press PATT to begin test pattern transmission Verify that the TEST and DCD LEDs are still lit and that the ERR LED lights briefly 3 If the ERR stays lit or continues to flicker after the initial flash the line driver is faulty call Black Box to arrange for repair or replacement Otherwise the unit passes the test restore all of the buttons to their normal positions PATT ANA DEPRESSED DEPRESSED PATTERN GENERATOR PATTERN TESTER Figure 6 3 Modem self test 6 4 Local Analog Loopback Activate the local analog loopback test by pressing the ANA button or by raising the level of the Local Loopback signal received by the li
20. U TSS NAME ABBREV CIRCUIT Shield SHD Signal Ground SGND Transmitted Data TD Received Data RD Request to Send RTS Clear to Send CTS DCE Ready DCR a k a Data Set Ready DSR Data Terminal Ready DTR Received Line Signal Detector RLSD a k a Carrier Detect CD Transmitter Sig Elem Timing DTE Source TSETT a k a External Clock EXTC Transmitter Sig Elem Timing DCE Source TSETC a k a Transmit Clock TC Receiver Sig Elem Timing DCE Source RSETC a k a Receive Clock RC gt WHF WY lt WY WH U gt lt lt lt Remote Loopback RL Local Loopback LL Test Mode TM 142 25 256 KBPS LINE DRIVER V 35 RS 530 X 21 Table 4 3 Pinout of the RackNest 2 14 s DB25 connector when ME445C 35 is installed SIGNAL ITU TSS NAME ABBREV CIRCUIT gt Frame Protective Ground FGND Signal Ground SGND Send Data SD Receive Data RD Request to Send RTS Clear to Send CTS Data Set Ready DSR OJ O Data Terminal Ready DTR Received Line Signal Detector RLSD a k a Carrier Detect CD Serial Clock Transmit External SCTE a k a External Clock EXTC Serial Clock Transmit SCT a k a Transmit Clock TC Serial Clock Receive SCR a k a Receive Clock RC Remote Digital Loopback RL
21. ado o su cubierta ha sido da ada 256 LINE DRIVER V 35 RS 530 X 21 TRADEMARKS USED IN THIS MANUAL AS 400 and IBM are registered trademarks of International Business Machines Corporation Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners CONTENTS Contents Chapter Page I Sp cifications i aeter ra ete ur ei D p Su uu asi 8 2 ahs HEN 10 2 1 Physical Description 10 2 2 Functional Description 2 11 2 2 1 Encoder Modulator 11 2 2 2 Modulation Timing vincia ide lidia 12 2 2 9 Sonal Levels de th e ERE e ins 12 2124 A NO 12 15 V 54 DI gnOSUCs 2 2 5 2 2 6 Test Pattern Generator and Receiver 222 42 2 15 2 AppliCationgszczscieniese devote bei ondes 13 3 p OI Gr Ehe Or iR UR 15 3 1 Placement of the Standalone Version sese 15 3 2 Installing the Card Version in RackNest 2 14 15 3 3 Configuring the Standalone or Card Version 17 E O RON 21 4 1 Installing the Standalone Version in 19 Racks 2 AV Ve A RE 21 4 1 2 Installing a Single Unit in a 19 Inch Rack 21 4 1 3 Installing Two Standalone Units in a 19 Inch Rack
22. anel of the standalone line driver CHAPTER 5 Operation 1 2 3 4 5 6 7 E A B C D Figure 5 2 The front panel of the rackmount card line driver Table 5 1 The controls The Item labels in this table correspond to those in Figures 5 1 and 5 2 ITEM CONTROL FUNCTION A DIG Pressing the local digital loopback button causes the local LDM MR256 to loop received data and clock to its transmitter Data Set Ready goes low B ANA Pressing the local analog loopback V 54 Loop 3 button causes the local LDM MR256 to loop its transmitter output back to its receiver This loopback may also be activated from the DTE when the ALB DTE jumper is set to EN C REM Pressing the remote digital loopback V 54 Loop 2 switch causes the remote LDM MR256 to loop received data and clock to its transmitter Data Set Ready goes low This loopback may be also activated from the DTE when the RLB strap is set to EN Pressing the PATT button causes the LDM MR256 to send and receive a 511 test pattern If errors are encountered the ERR LED becomes steadily lit or blinks Receive Data and Clear to Send go low Note The unit s CARRIER jumper should be set to ON if it is set to CNTRL the RTS signal must be high Remote Power Failure resets the ERR RPF LED 256 LINE DRIVER V 35 RS 530 X 21 Table 5 2 The indicators The item numbers in this table correspond to Figures 5 1 and
23. ata input to the unit and a drain wire from the cable shield if you are using shielded cable where GND is indicated The XMT and RCV pairs are not sensitive to polarity Connect power and data cables to the line driver as described in the following subsections 4 5 1 POWER CONNECTION The power connection provides AC voltage to the line driver To make this connection on the 115 VAC ME444A R3 models first attach the IEC 320 female outlet of the included power cord to the IEC 320 male inlet on the standalone line driver s rear panel To make this connection on the 230 VAC ME444AE R3 models first attach the IEC 320 female outlet of an appropriate power cord to the IEC 320 male inlet on the standalone line driver s rear panel This power cord must have a plug on the other end that will fit the site s mains outlets WARNING BEFORE PLUGGING THIS UNIT INTO AN OUTLET OR OTHER LIVE POWER SOURCE make sure its protective earth contact is connected to the protective conductor of the mains power cord The mains plug must be inserted only in a socket outlet provided with a protective earth contact The protective action must not be negated by use of an extension cord power cable without a protective grounding conductor If the line driver s fuse blows opens make sure that you replace it only with a 256 KBPS LINE DRIVER V 35 RS 530 X 21 fuse rated for the required amount of current You must avoid using repaired
24. ed externally from the PC or terminal or regenerated from the receive signal Receive timing is always regenerated from the receive signal The line driver features V 54 diagnostic capabilities for local analog loopback and local and remote digital loopback testing In the digital loopback mode the operator at either end of the line may test both modems and the line The loopback is controlled either by pressing front panel buttons or by manipulating signals on the V 35 RS 530 or X 21 DTE interface The line driver incorporates a built in Bit Error Rate Tester BERT The internal BERT enables complete testing of both modems and the line without external test equipment Pressing the line driver s front panel PATT button causes the unit to generate a pseudo random test pattern 511 bit according to ITU TSS V 52 for testing end to end connectivity The ERR LED flashes when a bit error occurs 2 1 Physical Description The line driver stands alone as a desktop unit or can be mounted in a 19 inch rack with optional brackets see Section 4 1 Also available is a rackmount card version that installs in the RackNest 2 14 see Section 4 2 For descriptions of the line driver s controls and indicators see Section 5 1 CHAPTER 2 Introduction 2 2 Functional Description This section describes the operation of the line driver s circuit blocks primarily the circuits required for correctly configuring the modem see Figure 2 1 below
25. ence 15055 1018 724 746 5500 Fax 724 746 0746
26. es 4 2 through 4 5 Chapter 4 for the pinouts of this connector and for the pinning of the adapters or adapter cables that will be necessary to attach a V 35 or X 21 DTE to this connector 256 KBPS LINE DRIVER V 35 RS 530 X 21 DESCRIPTION OF THE RACKNEST 2 14 s POWER SUPPLY The 115 VAC RackNest 2 14 our product code RM110A uses the PS1000A power supply which accepts 115 VAC input power The 230 VAC RackNest 2 14 uses power supply PS1000AE which accepts 230 VAC input power Each of these power supplies consists of a power line transformer and a fuse The 115 VAC nest can also be ordered with dual power supplies our product code RM110A 2PS either of these power supplies can be hot swapped if it fails power regulating circuitry for the RackNest 2 14 is located on the card modems themselves Each card has two fuses which protect the entire system against power failure due to a short circuit in one card Primary power needed is 115 or 230 VAC 10 47 to 63 Hz at 24 VA maximum AC power should be supplied to the RackNest 2 14 through a standard power cable run between the AC mains socket on the rear of the nest s power supply module an 320 male power inlet which contains an integral fuse and a standard grounded easily accessible AC outlet If your nest is an RM110A you can use the power cord supplied with it if your nest is an RM110AE use a power cord appropriate for your site s mains outlets The ne
27. fuses or short circuiting the fuse holders The fuse and one replacement fuse are located in the top part of the mains connector on the line driver s rear panel The nominal current value of the fuse is 0 125 A for 230 VAC operation or 0 25 A for 115 VAC operation Whenever it is likely that the protection offered by the fuse has been impaired the unit must be made inoperative and secured against any unintended operation After you have attached the power cord and have made sure that the cord is properly grounded you can plug the power cord into a working mains outlet CAUTION The unit has no power switch It starts operating as soon as power of the proper type is applied to its POWER connector 4 3 2 LINE CONNECTION The LINE connection provides an interface for the TX and RX signals between pairs of line drivers To make this connection attach the line wires to the terminal block on the line driver this way XMT remote line driver to RCV local unit e XMT remote unit to RCV local unit RCV remote unit to XMT local unit RCV remote unit to XMT local unit Optional Shield or drain wire line cable to ground local line driver the rightmost terminal All connections are made on the back of the line driver 4 3 3 DTE CONNECTION The interface DTE connector provides an interface for input output data as well as clock and control signals between the line driver and a V 35 DTE or DC
28. he equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to the radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Warning per EN 55022 This is a Class A product In a domestic environment this product may cause interference in which case the user may be required to take adequate measures Declaration of Conformity Supplementary Information Declaration of Conformity The line driver conforms to the following standard s or other normative document s EMC EN 55022 1994 Limits and methods of measure ment of radio disturbance characteristics of information technology equipment EN 50082 1 1992 Electromagnetic compatibility Generic immunity standards for residential commercial and light industry Safety EN 60950 1992 3 Safety of information technology equipment including electrical business equipment Supplementary Information This product complies with the requirements of the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC The product was tested in a typical configuration by the manufacturer 256 LINE DRIVER V 35 RS 530 X 21 NORMAS OFICIALES MEXIC
29. he screws as if they were the knobs on a drawer and expose or remove the unit s circuit board 3 Identify the control s refer to Figure 3 1 4 Move the control s to your desired position s 5 Replace the circuit board and screw the rear panel screws back in CHAPTER 4 Installation A Installation 4 1 Installing the Standalone Version in 19 Inch Racks 4 1 1 OVERVIEW The 256 kbps Line Driver standalone version can be installed in 19 inch racks It is 1U 1 75 4 4 cm high and is slightly less than half as wide as the available mounting area Two rack adapter kits are available as special quotes One kit provides the hardware necessary to install a single unit and the other provides the hardware necessary to install two units side by side Sections 4 1 2 and 4 1 3 provide step by step instructions for installation of single or dual units CAUTION Disconnect the units from AC power while performing the following procedures 4 1 2 INSTALLING A SINGLE UNIT IN A 19 INCH RACK The rack adapter kit for single unit installation includes one short bracket and one long bracket The brackets are fastened with screws to the two side walls of the case as shown in Figure 4 1 To prepare the standalone line driver for rack installation attach the two brackets to the sides of the unit Do this by inserting screws and flat washers into the two holes at the front of each side of the line driver nuts are already in place in
30. iver Refer to Table 3 1 on the next two pages for a list of all of these options the SWn and Jn numbers in the table s Element column correspond to the locations with the same numbers in Figure 3 1 Table 3 1 User configurable options Element Function Possible Standard Settings Factory Setting Sw3 Select the data rate in kilobits per second Opt 1 BAUD RATE 0 256 dial 1 192 2 144 3 128 4 115 2 5 112 6 96 7 72 8 64 64 kbps 9 57 6 A 56 B 48 C 38 4 D 32 E 28 8 F 19 2 Async sync baud rate J1 Enable or disable requests for V 54 digital DIS V54 DIS loopback tests from the remote line driver EN EN enabled jumper J2 Select the transmit carrier mode When you CNTRL CARRIER set this jumper to ON transmit carrier is ON ON jumper constantly ON When you set this jumper to jumper to CNTRL transmit carrier is ON only when RTS is high Use the CNTRL setting for multipoint applications J3 Select the source of the transmit timing signal INT INT Internal XMT CLK internal clock external clock from DTE or EXT jumper receive clock from remote unit Do not select RCV the ASY asynchronous no clock setting ASY Sw2 This switch only comes into play when ASY Data format asynchronous is selected jumper J3 ASY DIP switch should never be selected on this unit so the settings of this switch are irrelevant 256 LINE DRIVER V 35 RS 530 X 21
31. l digital loopback 256 LINE DRIVER V 35 RS 530 X 21 REM DEPRESSED LOCAL DTE CLK nova Figure 6 5 Remote digital loopback 6 6 Local Digital Loopback Activate the local digital loopback test by pressing the DIG button on the line driver s front panel This test involves creating an outbound loopback at the local line driver see Figure 6 6 on the next page It works the same way as if the remote operator had initiated a remote digital loopback at the remote site With this test the remote operator can check the performance of the remote and local line drivers and the line between them 1 Press DIG the local line driver will signal the remote unit and will start local digital loopback The TEST LED should light on both units The local line driver s receive input should be connected to its own transmitter 2 Perform a Bit Error Rate Test BERT Either Hook up an external BERT unit in place of the remote DTE or Use the remote line driver s internal BERT Press the PATT button The ERR LED should light briefly just to confirm that the LED is working and then the test will proceed If errors are detected the ERR LED will be continuously lit if the errors are continuous or will blink for intermittent errors 3 If the BERT test indicates a fault but both line drivers pass their modem self tests see Section 6 3 there is a problem somewhere in the communication line betwee
32. lectronically through the DTE connection 6 1 Loop Tests The loop test buttons DIG ANA and REM and LEDs built into the line driver allow you to rapidly check the unit the attached cables and the attached DTEs Use the test procedures described in this chapter to verify normal system operation and to isolate faulty equipment if a failure occurs Before testing the operation of the system equipment and line circuits make sure that all devices are turned on and are properly configured 6 2 The Bit Error Rate Tester BERT You can activate the line driver s internal Bit Error Rate Tester in any diagnostics test in which the transmitted test pattern is looped back to the BERT for comparison An example is shown in Figure 6 1 on the next page The line driver is also capable of operating opposite any 511 BERT tester When you use one line driver opposite another either with one or both PATT buttons pressed see Figure 6 2 or with an external BERT transmitting the same V 52 511 bit pattern you can test the complete link To activate the BERT press the PATT button The ERR LED will light momentarily just to confirm that the LED is working and then the test will proceed If errors are detected the ERR LED will be continuously lit if the errors are continuous or will blink for intermittent errors NOTE For the line driver s BERT to operate correctly the CARRIER jumper must be set to ON or the RTS signal must be high While
33. lt Figure 6 4 Local analog loopback CHAPTER 6 Troubleshooting 6 5 Remote Digital Loopback Activate the remote digital loopback test by pressing the REM button or by raising the level of the remote loopback signal received by the line driver s V 35 connector Pin HH This test involves creating an outbound loopback at the remote line driver see Figure 6 5 on the next page The test checks the performance of the local and remote units and the line between them 1 Press REM or raise remote loopback the local line driver will signal the remote unit to start remote digital loopback The TEST LED should light on both units The remote line driver s receive input should be connected to its own transmitter 2 Perform a Bit Error Rate Test BERT Either Hook up an external Bit Error Rate Test BERT unit in place of the local DTE or Use the local line driver s internal BERT Press the PATT button The ERR LED should light briefly just to confirm that the LED is working and then the test will proceed If errors are detected the ERR LED will be continuously lit if the errors are continuous or will blink for intermittent errors 3 If the BERT test indicates a fault but both line drivers pass their modem self tests there is a problem somewhere in the communication line between the units 4 After the test is complete or the fault has been corrected restore the REM button to its normal position Proceed with loca
34. n the units CHAPTER 6 Troubleshooting 4 After the test is complete or the fault has been corrected restore the DIG button to its normal position DIG DEPRESSED LOCAL REMOTE DTE DTE DATA Figure 6 6 Local digital loopback 6 7 Calling Black Box If you determine that your line driver is malfunctioning do not attempt to alter or repair the unit It contains no user serviceable parts Contact Black Box Technical Support at 724 746 5500 The problem might be solvable over the phone Before you do make a record of the history of the problem We will be able to provide more efficient and accurate assistance if you have a complete description including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the problem or make it worse 256 LINE DRIVER V 35 RS 530 X 21 6 8 Shipping and Packaging Ifyou need to transport or ship your line driver Package it carefully We recommend that you use the original container If you are shipping the line driver for repair make sure you include its power cord If you are returning the LDM MR256 make sure you include its manual as well Before you ship contact Black Box to get a Return Authorization RA number APPENDIX Maximum Distances Appendix Moximum Distances The maximum distance that a pair of line drivers can
35. ne driver s V 35 connector Pin JJ This test checks the performance of the local line driver the local DTE and the connections between them Perform this test separately at the local and remote sites refer to Figure 6 4 on the next page 1 Press ANA or raise Local Loopback to start local analog loopback The TEST LED should light The line driver s G 703 transmit output should be connected to its own receiver 256 LINE DRIVER V 35 RS 530 X 21 Verify that the DTE is operating properly and can be used for a test N 3 Perform the test using one of these methods Send data from the DTE and check the echoed data stream Hook up an external Bit Error Rate Test BERT unit in place of the DTE Use the line driver s internal BERT Press the PATT button The ERR LED should light briefly just to confirm that the LED is working and then the test will proceed If errors are detected the ERR LED will be continuously lit if the errors are continuous or will blink for intermittent errors 4 Repeat Steps 1 through 3 at the remote site 5 If the BERT tests show no errors but the data echoed back to either DTE is bad check the DTE and the cable connecting it to the line driver one of them is faulty 6 After the test is complete or the fault has been corrected restore the ANA button to its normal position Proceed with the digital loopback tests ANA DEPRESSED aux am DTE CLK ow _ reve
36. o patch between the V 35 M 34 male to male cable and the RackNest s DB25 connector Call Black Box for a quote on this type of cable 445 21 X 21 units Either this cable needs to be pinned for 115 550 to X 21 see Table 4 5 and have DB25 male connector at the RackNest end and a DA15 DB15 male connector at the DTE end or you need to use a correctly pinned short DB25 male to DA15 female cable or similar adapter to patch between the X 21 DAI5 male to male cable and the RackNest s DB25 connector Call Black Box for a quote on this type of cable 5 If you haven t already done so install the remote RackNest 2 14 Repeat steps 1 through 4 at the remote site 256 LINE DRIVER V 35 RS 530 X 21 6 Run twisted pair cable between the local and remote cards Attach one pair of wires to the corresponding XMT terminals TB1 on the back of the local RackNest and the corresponding RCV terminals on the remote RackNest attach the other pair of wires to the RCV terminals on the local RackNest and the XMT terminals on the remote RackNest It doesn t matter which wire in each pair goes to which terminal in each pair the cards autosense parity If you re using a ground wire attach it to the GND terminal on one RackNest not both of them CHAPTER 4 Installation Table 4 2 Pinout of the RackNest 2 14 s DB25 connector when 445 530 is installed or RS 530 513013106 5 DB25 connector SIGNAL IT
37. on 7 4 Wire Terminal Blocks TB1 For connection of 4 wire lines Each modem card has a separate terminal block connector CHAPTER 4 Installation After you install the RackNest 2 14 in your 19 rack refer to the RackNest s manual take these steps to install a line driver card in the RackNest l Insert the card into an empty slot on the RackNest see Figure 4 3 Do not use excessive force If the card does not go in easily remove the card realign it with the RackNest s enclosure guides and push it into place NOTE When the RackNest 2 14 is ON personnel are not exposed to any voltage over 30V on any card or accessible area of the nest Still take all reasonable precautions to avoid electric shock 2 Tighten the nut on the top of the card 3 Push the bottom of the card as far into the RackNest as it will comfortably go to ensure that its card edge connector makes full contact with the RackNest s 4 Run an appropriate cable from your DTE to the corresponding DB25 connector J1 on the back of the RackNest ME445C 530 RS 530 units You can use standard RS 530 DB25 male to male cable Refer to Table 4 2 for more information 445 35 V 35 units Either this cable needs to be specially pinned see Table 4 3 and have a DB25 male connector at the RackNest end and an M 34 male connector at the DTE end or you need to use a correctly pinned short DB25 male to M 34 female cable or similar adapter t
38. per good idea to set the master modem to LOW J14 Set to CON to connect signal ground to CHASS chassis ground Set to DIS to keep the CON connected jumper two grounds isolated from each other NOTES If the DTE does not provide the test pins for analog and remote loopback the ALB DTE and RLB DTE jumpers must be always set to DIS 1 Configura CHAPTER 3 261 4 882 3 Q 786 020 8 4 9S V 9 6 6 v9 8 02 4 96 9 29 8cL vVL c 261 1 952 0 900 8 board t Iver circur Figure 3 1 Layout of the 256 kbps Line Dr 256 KBPS LINE DRIVER V 35 RS 530 X 21 When you have everything at least tentatively decided take these steps to set the unit s Internal controls CAUTION Disconnect the standalone line driver from the power line before removing it from its housing WARNING HIGH VOLTAGE Any adjustment maintenance and repair of the open instrument under voltage should be avoided as much as possible and when inevitable should be carried out only by a skilled person who is aware of the hazard involved Capacitors inside the instrument may still be charged even after the instrument has been disconnected from the power source 1 Disconnect the AC power cord from the AC mains outlet 2 Unscrew the two rear panel screws until the rear panel becomes loose This releases the unit s drawer mechanism now you can pull t
39. sible for compliance 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 Industry Canada Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le Reglement sur le brouillage radio lectrique publi par Industrie Canada 256 KBPS LINE DRIVER V 35 RS 530 X 21 Safety Warnings Always observe standard safety precautions during installation operation and maintenance of this product Only qualified and authorized service personnel should adjust maintain or repair this instrument Do not attempt to adjust maintain or repair the equipment Telecommunication Safety The safety status of each of the ports on the line driver appears below Ports Safety Status V 24 V 35 V 36 X 21 RS 530 SELV Circuit operating with LAN Safety Extra Low Voltage G 703 Line TNV 1 Circuit whose normal operating voltage is within the limits of SELV on which overvoltages from telecommuni cations networks are possible FCC Part 15 User Information This equipment has been tested and found to comply with the limits of a Class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when t
40. side the unit After attaching the brackets install the unit in your 19 inch rack by fastening the brackets to the rack s side rails with four screws not included in the kit two on each side 256 LINE DRIVER V 35 RS 530 X 21 Figure 4 1 Installing a single unit in a 19 inch rack 4 1 5 INSTALLING TWO STANDALONE UNITS IN 19 INCH RACK The adapter kit includes two long side rails one for each unit which slide into each other to fasten the units together and two short side brackets which hold the two line drivers side by side in a 19 inch rack Refer to Figure 4 2 when you perform the following procedure 1 Fasten one long side rail to each standalone line driver one rail on the right side of one unit the other rail on the left side of the other unit using the four included screws and flat washers The rails must be attached so that they oppose each other The narrow flange of the first rail must face the wide flange of the second rail 2 Using four included screws and flatwashers for each bracket attach the two short brackets to the vacant sides of the standalone line drivers 3 Slide the two line drivers side rails into each other fastening the two units together CHAPTER 4 Installation 4 Secure the included plastic caps to the ends of the rails to protect the rail ends and prevent the units from moving 5 You can now use four screws not supplied with the kit two
41. st begins operating and supplying power to the installed cards as soon as it is plugged into a mains outlet and will continue operating until it is unplugged WARNING This unit should always be grounded through the protective earth lead of the power cable Before AC power is connected to this unit the mains plug should only be inserted into a socket outlet provided with protective earth contact The protective action must not be negated by use of an extension cord without a grounding conductor Whenever it is likely that the unit s fuse located in a bayonet type fuse holder on the unit s rear panel has been blown or damaged make the unit inoperative and secure it against unintended operation until the fuse can be replaced Make sure that only fuses of the required rating as marked on the rear panel are used for replacement Do not use repaired fuses or short circuit the fuse holder Always disconnect the mains cable before removing or replacing the fuse Interrupting the grounding conductor inside or outside the unit or disconnecting the protective earth contact can make this unit dangerous CHAPTER 3 Configuration 3 3 Configuring the Standalone or Card Version Before attaching anything to the 256 kbps Line Driver standalone or rackmount card version determine which data rate you re going to use what the system s clock source should be and how you want to set all of the other user configurable options on the line dr
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