Black Box ME759C-RJ45 - Manuals

4 MULTI-FUNCTION LD CARD Contents Chapter Page 1. Specifications ............................................................................................. 5 2. Introduction ............................................................................................... 82.1 Overview ................

5 CHAPTER 1: Specifications 1. Specifications HardwareRequired — 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...

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-mod...

8 MULTI-FUNCTION LD CARD 2. Introduction 2.1 Overview The Multi-Function LD Card is a short-range modem on a dual rack card (ithas a main [front] module and an interface [rear] module). The Cardoperates across two wires (half-duplex) or four wires (full- or half-duplex),communicating synchronously o...

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 ...

10 MULTI-FUNCTION LD CARD This chapter describes the locations and posssible settings of the Multi-Function LD Card’s configuration controls, and provides detailed instructionsfor setting them. Section 3.1 tells you about the three 8-position DIP switches on the Card’s main (front) module. Section 3...

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-defaultsettings are summarized in Table 3-1 below. Table 3-1. Switch S1 Summar y Position Functi...

12 MULTI-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 forboth synchronous and asynchronous protocols) of the Multi-Function LDCard. 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...

16 MULTI-FUNCTION LD CARD Table 3-4. Recommended Impedance Settings S3-4: Mode Selection Set position 4 of switch S3 to determine whether the Multi-Function LD Cardoperates in point-to-point or multipoint mode. S3-4 Operation On Point-to-point (also multipoint as the “master”) (default) Off Multipoi...

20 MULTI-FUNCTION LD CARD Table 3-5, below, provides a summary of the functions of these jumpers. Thefunctions are described in more detail afterward. Table 3-5. Summar y of Interface-Module Jumper Functions Line Interface: Line Shield Connection to Frame Ground (JB2) This jumper applies to the line...

22 MULTI-FUNCTION LD CARD 4. Installation This chapter describes the functions of the MicroRacks, tells how to install thefront and rear modules of the Multi-Function LD Cards in them, and providesdiagrams for wiring the interface connections correctly. 4.1 The MicroRacks: An Overview Multi-Function...

23 CHAPTER 4: Installation 4.2 The MicroRacks’ Power Supply The power supply included with the MicroRacks uses the same mid-planearchitecture as the line-driver cards. Slide the front module of the powersupply into the MicroRack from the front, and slide the rear module in fromthe rear. The two modu...

24 MULTI-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-specifiedpower-supply configuration, you may change the configuration yourself.Follow these steps to switch the configuration of the power supp...

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-pinfemale RJ-style con...

26 MULTI-FUNCTION LD CARD The Multi-Function LD Card is wired as a DCE (Data CommunicationsEquipment) device. Therefore, it would normally be connected to a DTE(Data Terminal Equipment) RS-232 device. You might need to run a specialcable or use a special adapter if the serial port of the RS-232 devi...

27 CHAPTER 4: Installation Table 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 .............................

29 CHAPTER 5: Operation and Diagnostics 5. Operation and Diagnostics Once you have configured each Multi-Function LD Card and connected thecables, you are ready to operate the units. This chapter describes the Card’sLEDs, the power-up procedure, and diagnostic testing. 5.1 Status LEDs The Multi-Func...

30 MULTI-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 eachsignal) 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 LEDslight for an incoming RTS s...

32 MULTI-FUNCTION LD CARD NOTE We cannot guarantee that the Card will accurately detect small pieces offlat satin cable in the line if they are farther than 1500 ft. (457.2 m) fromthe local modem. C. If one wire among the four twisted-pair wires is broken, the Error LED and the green CD LED will bot...

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 Err...

34 MULTI-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 withperiodic errors. If this test is working properly, the Error LED will blink regularly . A successful 511/E test will confirm th...

36 MULTI-FUNCTION LD CARD 6. Troubleshooting 6.1 Calling Your 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 pr...

37 APPENDIX: Cable Recommendations Appendix: Cable Recommendations The Multi-Function LD Card has been performance-tested using twisted-paircable 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...

38 MULTI-FUNCTION LD CARD To gain optimum performance from the Multi-Function LD Card, pleasekeep 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 ...

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