Black Box ME444A-R3 Manual de usuario

CUSTOMERSUPPORTINFORMATIONOrder 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

9CHAPTER 1: SpecificationsMaximum Altitude: 8000 ft. (2438.4 m)Enclosure: High-impact plasticPower: ME444A-R3: Directly from outlet through detachable

10256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)2. IntroductionThe 256-kbps Line Driver is a short-range modem for synchronous orasynchronous transmissi

11CHAPTER 2: Introduction2.2 Functional DescriptionThis section describes the operation of the line driver’s circuit blocks, primarily thecircuits req

12256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)NOTEIn multipoint applications, do not use the 0-msec option for theRTS–CTS delay.2.2.2 MODULATIONTIMING

13CHAPTER 2: Introduction2.2.5 V.54 DIAGNOSTICSV.54 loops are activated manually with the front-panel buttons, or through theDTE interface. The button

14256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Figure 2-3. Tail-circuit application.Figure 2-4. Multipoint application.Sync hostSync hostCSU/DSUDDS (56

15CHAPTER 3: Configuration3. ConfigurationThis chapter explains how to configure your standalone or rackmount card linedriver. After you configure it,

16256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)DESCRIPTION OF THERACKNEST2/14’SPOWERSUPPLYThe 115-VAC RackNest 2/14 (our product code RM110A) uses the

17CHAPTER 3: Configuration3.3 Configuring the Standalone or Card VersionBefore attaching anything to the 256-kbps Line Driver standalone or rackmountc

18256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Table 3-1 (continued). User-configurable options.Element Function Possible StandardSettings FactorySetti

1FCC AND IC RFI STATEMENTSFEDERAL COMMUNICATIONS COMMISSIONANDINDUSTRY CANADARADIO FREQUENCY INTERFERENCE STATEMENTSThis equipment generates, uses, an

19CHAPTER 3: ConfigurationFigure 3-1. Layout of the 256-kbps Line Driver circuit board.

20256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)When you have everything at least tentatively decided, take these steps to set theunit’s internal contro

21CHAPTER 4: Installation4. Installation4.1 Installing the Standalone Version in 19-Inch Racks4.1.1 OVERVIEWThe 256-kbps Line Driver standalone versio

22256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Figure 4-1. Installing a single unit in a 19-inch rack.4.1.3 INSTALLINGTWOSTANDALONEUNITS IN A19-INCHRAC

23CHAPTER 4: Installation4. Secure the included plastic caps to the ends of the rails, to protect the railends and prevent the units from moving.5. Yo

24256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)4.2 Installing the 256-kbps Line Driver Rackmount Card VersionTHERACKNEST2/14 ILLUSTRATEDYou will be ins

25CHAPTER 4: InstallationFigure 4-4. The RackNest 2/14 illustrated.GNDRCVXMITON1725346

26256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Table 4-1. Descriptions of RackNest 2/14 components.Item Control, Indicator, or Connector Function1 Card

27CHAPTER 4: InstallationAfter you install the RackNest 2/14 in your 19" rack (refer to the RackNest’smanual), take these steps to install a line

28256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)6. Run twisted-pair cable between the local and remote cards. Attach onepair of wires to the correspondi

2256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Safety WarningsAlways observe standard safety precautions during installation,operation, and maintenance

29CHAPTER 4: InstallationTable 4-2. Pinout of the RackNest 2/14’s DB25 connector whenME445C-530 is installed or RS-530 standalone’s DB25 connector.SIG

30256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Table 4-3. Pinout of the RackNest 2/14’s DB25 connector when ME445C-35 is installed.SIGNAL ITU-TSS LEAD

31CHAPTER 4: InstallationTable 4-4. Pinout of the V.35 standalone’s M/34 connector.SIGNAL ITU-TSS LEAD V.35NAME (ABBREV.) CIRCUIT TYPE PINFrame (Prote

32256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Table 4-5. Pinout of the RackNest 2/14’s DB25 connector whenME445C-X21 is installed.SIGNAL ITU-TSS LEAD

33CHAPTER 4: Installation4.3 Connecting Data CablesAfter you set the standalone line driver’s internal controls, it’s ready to be cabledfor operation.

34256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)fuse rated for the required amount of current. You must avoid using repaired fusesor short-circuiting th

35CHAPTER 4: InstallationTo connect the line driver to a V.35 DTE or DCE, use an appropriate cable that ispinned correctly (straight-through for DTE,

36256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)5. OperationThis chapter contains a list of the controls and indicators and their functions, aswell as a

37Figure 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

38256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Table 5-2. The indicators.The item numbers in this table correspond to Figures 5-1 and 5-2.ITEM INDICATO

3Declaration of Conformity/Supplementary InformationDeclaration of ConformityThe line driver conforms to the following standard(s) or other normatived

39CHAPTER 6: Troubleshooting6. TroubleshootingThis chapter explains system-test and fault-isolation procedures.The line driver provides local loopback

40256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Figure 6-1. BERT using loops.Figure 6-2. Two line drivers doing end-to-end BERT.PATTERNGENERATORPATTERNT

416.3 The Modem Self-TestTo verify that the line driver itself is operating correctly, initiate the modem self-test by pressing the PATT and ANA butto

42256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)2. Verify that the DTE is operating properly and can be used for a test.3. Perform the test using one of

43CHAPTER 6: Troubleshooting6.5 Remote Digital LoopbackActivate the remote digital loopback test by pressing the REM button or by raisingthe level of

44256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)Figure 6-5. Remote digital loopback.6.6 Local Digital LoopbackActivate the local digital loopback test b

45CHAPTER 6: Troubleshooting4. After the test is complete or the fault has been corrected, restore the DIGbutton to its normal position.Figure 6-6. Lo

46256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)6.8 Shipping and PackagingIf you need to transport or ship your line driver:• Package it carefully. We r

47Appendix: Maximum DistancesThe maximum distance that a pair of line drivers can communicate across willvary depending on the data rate and the thick

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4256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)NORMAS OFICIALES MEXICANAS (NOM)ELECTRICAL SAFETY STATEMENTINSTRUCCIONES DE SEGURIDAD1. Todas las instruc

5NOM STATEMENT12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarizacióndel equipo no sea eliminada.13. Los cables de la fuen

6256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)TRADEMARKS USED IN THIS MANUALAS/400 and IBM are registered trademarks of International BusinessMachines

7CONTENTSContentsChapter Page1. Specifications ....... 82. Int

8256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)1. SpecificationsCompliance: FCC Class A, IC Class/classe AProtocol: Synchronous or asynchronousClock Sou