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Black Box ME758C-RJ11 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500 ) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation , 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com MAY 1995 [...]

  • Page 2

    1 FCC ST A TEMENTS FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS 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 h[...]

  • Page 3

    2 MUL TI-FUNCTION LD CARD NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY ST A TEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. Todas las adver[...]

  • Page 4

    3 NOM ST A TEMENTS 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización 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 atención a los contactos y receptáculos donde [...]

  • Page 5

    4 MUL TI-FUNCTION LD CARD Contents Chapter Page 1. Specifications ............................................................................................. 5 2. Introduction ............................................................................................... 8 2.1 Overview .............................................................[...]

  • Page 6

    5 CHAPTER 1: Specifications 1. Specifications Hardware Required — Cards can be installed only in MicroRacks (see Section 4.1 ) Cable Required — For modem-to-modem line: Two- or four-wire unconditioned twisted-pair, 19 to 26 AWG (see the Appendix ), pinned as shown in Section 4.5 Compliance — FCC Part 15 Class A, DOC Class/MDC classe A Interfa[...]

  • Page 7

    6 MUL TI-FUNCTION LD CARD Data Rates — 57.6, 38.4, 28.8, 19.2, 14.4, 9.6, 7.2, 4.8, 3.6, 2.4, or 1.2 kbps (user-selectable) Maximum Distance — See the maximum distance chart in the Appendix Isolation — 1500 volts RMS minimum using custom transformers Surge-Protection Method — Silicon Avalanche Diodes Surge-Response Time — 1 ps Maximum Sur[...]

  • Page 8

    7 CHAPTER 1: Specifications (1) 50-position card-edge male (to MicroRack); On interface module: All models: (1) 50-position card-edge male (to MicroRack); ME758C-RJ11: (1) 6-pin RJ-11 female for modem-to-modem line, (1) DB25 female for modem-to-DTE line; ME758C-RJ45: (1) RJ-45 female for modem-to-modem line, (1) DB25 female for modem-to-DTE line; M[...]

  • Page 9

    8 MUL TI-FUNCTION LD CARD 2. Introduction 2.1 Overview The Multi-Function LD Card is a short-range modem on a dual rack card (it has a main [front] module and an interface [rear] module). The Card operates across two wires (half-duplex) or four wires (full- or half-duplex), communicating synchronously or asynchronously, up to a maximum range of 20 [...]

  • Page 10

    9 CHAPTER 2: Introduction • Internal, external, or received loopback clocking • Hardware or software flow control • Automatic equalization and gain control • Anti-streaming timer • Built-in transformer isolation and high-speed surge protection • V.52 and V.54 test modes • Eleven LED indicators show you status at a glance • Error LED[...]

  • Page 11

    10 MUL TI-FUNCTION LD CARD This chapter describes the locations and posssible settings of the Multi- Function LD Card’s configuration controls, and provides detailed instructions for setting them. Section 3.1 tells you about the three 8-position DIP switches on the Card’s main (front) module. Section 3.2 tells you about the three jumpers (“st[...]

  • Page 12

    11 CHAPTER 3: Configuration 3.1.2 C ONFIGURATION S WITCH “S1” Use the individual positions on DIP switch S1 to set data rate, clock source, sync vs. async protocol, and carrier-control method. The factory-default settings are summarized in Table 3-1 below. T able 3-1. Switch S1 Summar y Position Function Default Setting S1-1 Data Rate On S1-2 D[...]

  • Page 13

    12 MUL TI-FUNCTION LD CARD S1 Positions 1 through 4: Data-Rate Setting Set positions 1 through 4 of switch S1 to determine the data rate (valid for both synchronous and asynchronous protocols) of the Multi-Function LD Card. S1-1 S1-2 S1-3 S1-4 Data Rate On On On On 1.2 kbps Off On On On 1.8 kbps On Off On On 2.4 kbps Off Off On On 3.6 kbps On On Of[...]

  • Page 14

    13 CHAPTER 3: Configuration S1 Position 8: Carrier-Control Method Set position 8 of switch S1 to determine whether the carrier is “constantly on” or “controlled by RTS.” In the “controlled by RTS” setting, the Switch can support switched-carrier, multipoint, or hardware flow-control applications. S1-8 Carrier Off Constantly ON (default)[...]

  • Page 15

    14 MUL TI-FUNCTION LD CARD S2 Position 3: V.52 and V.54 Diagnostic Testing To reset the V.54 circuit, turn switch S2 position 3 ON, then back OFF. S2-3 Test Mode Off Normal Operation (default) On Test Disabled S2 Positions 4 and 5: RTS/CTS Delay Set positions 4 and 5 of switch S2 to determine the amount of time the Multi- Function LD Card waits aft[...]

  • Page 16

    15 CHAPTER 3: Configuration 3.1.4 C ONFIGURATION S WITCH “S3” Use the individual positions on DIP switch S3 to set antistream control, receive (input) impedance, and point-to-point/multipoint, as well as to enable or disable local and remote loopbacks. The factory-default settings are summarized in Table 3-3 below. T able 3-3. Switch S3 Summar [...]

  • Page 17

    16 MUL TI-FUNCTION LD CARD T able 3-4. Recommended Impedance Settings S3-4: Mode Selection Set position 4 of switch S3 to determine whether the Multi-Function LD Card operates in point-to-point or multipoint mode. S3-4 Operation On Point-to-point (also multipoint as the “master”) (default) Off Multipoint (as a “slave”) S3-5: DTE RS-232 Init[...]

  • Page 18

    17 CHAPTER 3: Configuration S3-7 and S3-8: Antistream Control Set positions 7 and 8 of switch S3 to determine the timeout period for the Multi-Function LD Card’s antistream-control timer, or to disable the timer entirely. S3-7 S3-8 Setting Off Off Disabled (default) Off On 12.5 seconds On Off 50 seconds On On 12.5 seconds 3.2 Setting the Jumpers [...]

  • Page 19

    18 MUL TI-FUNCTION LD CARD Figure 3-3, below, shows the rear panels of each of these interface modules. Before you install the Card, you should examine the interface module you have selected and make sure that it is configured for your application. Each interface module has three jumpers on its circuit board, as described in the following sections.[...]

  • Page 20

    19 CHAPTER 3: Configuration 3.2.3 W HERE THE J UMPERS A RE Figure 3-5, below, shows the locations of the jumpers on the interface modules (the locations are the same for both the -RJ11 and -RJ45 models). These jumpers determine various grounding and signal characteristics for the serial and modem-to-modem lines. Figure 3-5. The jumper locations. ME[...]

  • Page 21

    20 MUL TI-FUNCTION LD CARD Table 3-5, below, provides a summary of the functions of these jumpers. The functions are described in more detail afterward. T able 3-5. Summar y of Interface-Module Jumper Functions Line Interface: Line Shield Connection to Frame Ground (JB2) This jumper applies to the line interface. When this jumper is in positions 1 [...]

  • Page 22

    21 CHAPTER 3: Configuration Serial Interface: DTE Shield (Pin 1) Connection to Frame Ground (JB3) This jumper applies to the serial interface. In position 1 and 2, this jumper links the Protective Ground (PGND) or “DTE Shield” lead (DB25 Pin 1 or 10- pin RJ Pins 1 and 10) of the RS-232 line to the interface module’s frame ground (FGND). When [...]

  • Page 23

    22 MUL TI-FUNCTION LD CARD 4. Installation This chapter describes the functions of the MicroRacks, tells how to install the front and rear modules of the Multi-Function LD Cards in them, and provides diagrams for wiring the interface connections correctly. 4.1 The MicroRacks: An Overview Multi-Function LD Cards are designed to be installed in our M[...]

  • Page 24

    23 CHAPTER 4: Installation 4.2 The MicroRacks’ Power Supply The power supply included with the MicroRacks uses the same mid-plane architecture as the line-driver cards. Slide the front module of the power supply into the MicroRack from the front, and slide the rear module in from the rear. The two modules plug into one another in the middle of th[...]

  • Page 25

    24 MUL TI-FUNCTION LD CARD 4.2.3 S WITCHING THE P OWER S UPPLY B ETWEEN 120 AND 240 V OLTS Although the MicroRack is shipped from the factory with a customer-specified power-supply configuration, you may change the configuration yourself. Follow these steps to switch the configuration of the power supply between 120 VAC and 240 VAC: 1. Making sure [...]

  • Page 26

    25 CHAPTER 4: Installation 4.4 The RS-232 Serial Cables and Connectors The Multi-Function LD Card’s RS-232 port is always the lower port on its interface module. On ME758C models it is a standard DB25 connector (pinout shown in Table 4-1 below, top). On ME759C models it is a 10-pin female RJ-style connector (compatible with regular male RJ-45 cab[...]

  • Page 27

    26 MUL TI-FUNCTION LD CARD The Multi-Function LD Card is wired as a DCE (Data Communications Equipment) device. Therefore, it would normally be connected to a DTE (Data Terminal Equipment) RS-232 device. You might need to run a special cable or use a special adapter if the serial port of the RS-232 device you want to attach is not the same type of [...]

  • Page 28

    27 CHAPTER 4: Installation T able 4-3. Line-Cable Pinouts RJ-11 (Four-Wire) SIGNAL PIN# COLOR* COLOR* PIN# SIGNAL GND** 1 Blue..................................................White 6 GND** RCV–† 2 Yellow ..............................................Red 4 XMT– XMT+ 3 Green ...............................................Black 5 RCV+ XMT– 4 [...]

  • Page 29

    28 MUL TI-FUNCTION LD CARD 4.6 Multipoint Applications The Multi-Function LD Card supports multipoint applications using equipment arranged in a star topology. Maximum distance between the units will vary based on the number of drops, data rate, wire gauge, etc. Call your supplier’s technical support for distance estimates more specific to your a[...]

  • Page 30

    29 CHAPTER 5: Operation and Diagnostics 5. Operation and Diagnostics Once you have configured each Multi-Function LD Card and connected the cables, you are ready to operate the units. This chapter describes the Card’s LEDs, the power-up procedure, and diagnostic testing. 5.1 Status LEDs The Multi-Function LD Card features 11 front-panel status LE[...]

  • Page 31

    30 MUL TI-FUNCTION LD CARD 5.1.2 T HE RTS AND CD I NDICATORS The RTS and CD indicators (again, one red and one green LED for each signal) function much like the TD and RD LEDs: The red LEDs light for a “low” signal, while the green LEDs light for a “high” signal. The RTS LEDs light for an incoming RTS signal on the RS-232 side (DB25 Pin 4 o[...]

  • Page 32

    31 CHAPTER 5: Operation and Diagnostics 5.2 Diagnostic T esting Using the Error LED 5.2.1 T ESTING C ABLE Q UALITY NOTE The Error LED’s circuitry is designed to detect line quality across 4-wire twisted-pair cable only, and might not function properly with 2-wire cable. If there is any question as to the quality of your line, we recommend the fol[...]

  • Page 33

    32 MUL TI-FUNCTION LD CARD NOTE We cannot guarantee that the Card will accurately detect small pieces of flat satin cable in the line if they are farther than 1500 ft. (457.2 m) from the local modem. C. If one wire among the four twisted-pair wires is broken, the Error LED and the green CD LED will both light on at least one of the modems. 5.2.2 D [...]

  • Page 34

    33 CHAPTER 5: Operation and Diagnostics When the local and remote Multi-Function LD Cards are both powered up and are passing data normally , the LEDs on the Cards will look like this: • Power: Steadily lit • TD and RD: Flashing red and green • RTS and CD: Green steadily lit, red dark • Test and Error: Dark 5.4 V .54 and V .52 Diagnostic T [...]

  • Page 35

    34 MUL TI-FUNCTION LD CARD 4. If the BERT test indicates no errors are present, move the “511/E—511” toggle switch to the left-hand position to activate the “511/E” test with periodic errors. If this test is working properly, the Error LED will blink regularly . A successful 511/E test will confirm that the loop is in place, and that the [...]

  • Page 36

    35 CHAPTER 5: Operation and Diagnostics 4. If the BERT test indicates no errors are present, move the “511/E—511” toggle switch to the left-hand position to activate the “511/E” test with periodic errors. If this test is working properly, the Error LED will blink regularly . A successful 511/E test will confirm that the loop is in place, [...]

  • Page 37

    36 MUL TI-FUNCTION LD CARD 6. T roubleshooting 6.1 Calling Y our Supplier If you determine that your Multi-Function LD Card is malfunctioning, do not attempt to alter or repair it. Contact your supplier. The problem might be solvable over the phone. Before you do, make a record of the history of the problem. Your supplier will be able to provide mo[...]

  • Page 38

    37 APPENDIX: Cable Recommendations Appendix: Cable Recommendations The Multi-Function LD Card has been performance-tested using twisted-pair cable with these characteristics: Wire Gauge Capacitance Resistance 19 AWG 83 nf/mi. or 15.72 pf/ft.* 16.3 Ω /1000 ft. (53.5 Ω /km) 22 AWG 83 nf/mi. or 15.72 pf/ft.* 32.6 Ω /1000 ft. (107 Ω /km) 24 AWG[...]

  • Page 39

    38 MUL TI-FUNCTION LD CARD To gain optimum performance from the Multi-Function LD Card, please keep these guidelines in mind: • Always use twisted-pair cable—this is not an option. • Use twisted-pair cable with a capacitance of 20 pf/ft. (65.6 pf/m) or less. • Avoid twisted-pair cable thinner than 26 AWG (that is, avoid higher AWG numbers t[...]

  • Page 40

    1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 1995. Black Box Corporation. All rights reserved.[...]