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9CHAPTER 2: Introduction • Internal, external, or received loopback clocking• Hardware or software flow control• Automatic equalization and gain contr
10MULTI-FUNCTION LD CARDThis chapter describes the locations and posssible settings of the Multi-Function LD Card’s configuration controls, and provid
11CHAPTER 3: Configuration 3.1.2 CONFIGURATIONSWITCH“S1”Use the individual positions on DIP switch S1 to set data rate, clock source,sync vs. async pr
12MULTI-FUNCTION LD CARDS1 Positions 1 through 4: Data-Rate SettingSet positions 1 through 4 of switch S1 to determine the data rate (valid forboth sy
13CHAPTER 3: Configuration S1 Position 8: Carrier-Control MethodSet position 8 of switch S1 to determine whether the carrier is “constantly on”or “con
14MULTI-FUNCTION LD CARDS2 Position 3: V.52 and V.54 Diagnostic TestingTo reset the V.54 circuit, turn switch S2 position 3 ON, then back OFF.S2-3 Tes
15CHAPTER 3: Configuration 3.1.4 CONFIGURATIONSWITCH“S3”Use the individual positions on DIP switch S3 to set antistream control,receive (input) impeda
16MULTI-FUNCTION LD CARDTable 3-4. Recommended Impedance SettingsS3-4: Mode SelectionSet position 4 of switch S3 to determine whether the Multi-Functi
17CHAPTER 3: Configuration S3-7 and S3-8: Antistream ControlSet positions 7 and 8 of switch S3 to determine the timeout period for theMulti-Function L
18MULTI-FUNCTION LD CARDFigure 3-3, below, shows the rear panels of each of these interface modules.Before you install the Card, you should examine th
1FCC STATEMENTSFEDERAL COMMUNICATIONS COMMISSIONANDINDUSTRY CANADARADIO FREQUENCY INTERFERENCE STATEMENTSThis equipment generates, uses, and can radia
19CHAPTER 3: Configuration 3.2.3 WHERE THEJUMPERSAREFigure 3-5, below, shows the locations of the jumpers on the interfacemodules (the locations are t
20MULTI-FUNCTION LD CARDTable 3-5, below, provides a summary of the functions of these jumpers. Thefunctions are described in more detail afterward.Ta
21CHAPTER 3: Configuration Serial Interface: DTE Shield (Pin 1) Connection to Frame Ground (JB3)This jumper applies to the serial interface. In positi
22MULTI-FUNCTION LD CARD4. InstallationThis chapter describes the functions of the MicroRacks, tells how to install thefront and rear modules of the M
23CHAPTER 4: Installation 4.2 The MicroRacks’ Power SupplyThe power supply included with the MicroRacks uses the same mid-planearchitecture as the lin
24MULTI-FUNCTION LD CARD4.2.3 SWITCHING THEPOWERSUPPLYBETWEEN120 AND240 VOLTSAlthough the MicroRack is shipped from the factory with a customer-specif
25CHAPTER 4: Installation 4.4 The RS-232 Serial Cables and ConnectorsThe Multi-Function LD Card’s RS-232 port is always the lower port on itsinterface
26MULTI-FUNCTION LD CARDThe Multi-Function LD Card is wired as a DCE (Data CommunicationsEquipment) device. Therefore, it would normally be connected
27CHAPTER 4: Installation Table 4-3. Line-Cable PinoutsRJ-11 (Four-Wire)SIGNAL PIN# COLOR* COLOR* PIN# SIGNALGND** 1 Blue...
28MULTI-FUNCTION LD CARD4.6 Multipoint ApplicationsThe Multi-Function LD Card supports multipoint applications usingequipment arranged in a star topol
2MULTI-FUNCTION LD CARDNORMAS OFICIALES MEXICANAS (NOM)ELECTRICAL SAFETY STATEMENTINSTRUCCIONES DE SEGURIDAD1. Todas las instrucciones de seguridad y
29CHAPTER 5: Operation and Diagnostics5. Operation and DiagnosticsOnce you have configured each Multi-Function LD Card and connected thecables, you ar
30MULTI-FUNCTION LD CARD5.1.2 THERTS ANDCD INDICATORSThe RTS and CD indicators (again, one red and one green LED for eachsignal) function much like th
31CHAPTER 5: Operation and Diagnostics 5.2 Diagnostic Testing Using the Error LED5.2.1 TESTINGCABLEQUALITYNOTEThe Error LED’s circuitry is designed to
32MULTI-FUNCTION LD CARDNOTEWe cannot guarantee that the Card will accurately detect small pieces offlat satin cable in the line if they are farther t
33CHAPTER 5: Operation and Diagnostics When the local and remote Multi-Function LD Cards are both powered up andare passing data normally, the LEDs on
34MULTI-FUNCTION LD CARD4. If the BERT test indicates no errors are present, move the “511/E—511”toggle switch to the left-hand position to activate t
35CHAPTER 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 positio
36MULTI-FUNCTION LD CARD6. Troubleshooting6.1 Calling Your SupplierIf you determine that your Multi-Function LD Card is malfunctioning, do notattempt
37APPENDIX: Cable RecommendationsAppendix: Cable RecommendationsThe Multi-Function LD Card has been performance-tested using twisted-paircable with th
38MULTI-FUNCTION LD CARDTo gain optimum performance from the Multi-Function LD Card, pleasekeep these guidelines in mind:• Always use twisted-pair cab
3NOM STATEMENTS12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarizacióndel equipo no sea eliminada.13. Los cables de la fue
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4MULTI-FUNCTION LD CARDContentsChapter Page1. Specifications ...
5CHAPTER 1: Specifications 1. SpecificationsHardwareRequired — Cards can be installed only in MicroRacks (see Section 4.1)Cable Required — For modem-t
6MULTI-FUNCTION LD CARDData 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)MaximumDistance — See the maxi
7CHAPTER 1: Specifications (1) 50-position card-edge male (to MicroRack);On interface module:All models:(1) 50-position card-edge male (to MicroRack);
8MULTI-FUNCTION LD CARD2. Introduction2.1 OverviewThe Multi-Function LD Card is a short-range modem on a dual rack card (ithas a main [front] module a
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