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E1/T1 Rate Converters
CUSTOMER
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
SUPPORT
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
JULY 2003
MT1100A
MT1100A-DC
MT1100C
MT1101A-DC
MT1102A-DC
MT1101A
MT1102A
MT1102C
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Table of Contents
Troubleshooting
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Summary of Contents for Black Box MT1100C
- Page 1 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 SUPPORT Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
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Page 3: Table Of Contents
DC Supply..........................Power Supply with Redundancy.................... 5.3 Front Panel ........................5.4 Installing MT1100C, MT1102C..................Setting Internal Jumpers and Switches ................... Installing MT1100C, MT1102C into the Rack Nest 2/14 Card Cage ........Connecting the Interfaces ..................... Appendix A. Interface Connector Wiring... - Page 4 2-2. Jumper Locations, T1 Converter .................... 3-1. E1 Converter Front Panel....................... 3-1. T1 Converter Front Panel ...................... 4-1. Running Local Loopback ....................... 5-2. MT1100C, MT1102C Front Panels ..................5-5. Rack Nest 2/14 Front Panel ....................5-6. PCB Layout ........................... List of Tables 2-1.
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Page 5: Chapter 1. Introduction
MT1100A – standalone T1 to V.35 converter, AC power supply • MT1100A-DC – standalone T1 to V.35 converter, DC (-48 VDC) power supply • MT1100C – converter card for Rack Nest 2/14 modem nest, T1 to V.35 • MT1102A – standalone T1 to RS-530 converter, AC power supply •... -
Page 6: Functional Description
Tx & Rx Code Clock HDB3 P.S. Gen. Figure 1-2. Block Diagram, E1 Converter Figure 1-2 shows the functional block diagram of MT1100A, MT1100A-DC, MT1100C, MT1102A, MT1102A-DC, and MT1102C. RJ - 45 Txclk Rxclk Tx & Rx Code Loss B8ZS P.S. -
Page 7: Technical Specifications
Chapter 1 Introduction 1.3 Technical Specifications E1 Interface Coding HDB3 or AMI Framing Unframed Bit Rate 2.048 Mbps Impedance 120Ω, balanced 75Ω, unbalanced RCV Signal Level 0 to -10 dB XMT Signal Level 3V (±10%), balanced 2.37V (±10%), unbalanced Connectors RJ-45, 8-pin, balanced Two BNC coaxial, unbalanced Return Loss... - Page 8 Chapter 1 Introduction Diagnostics Complies with ITU V.54 (loop 3) Local Loopback Activated by: • Internal jumper (standalone unit) • Front panel pushbutton (rack card) • DTE circuit 141 Power AC Source 100 to 240 VAC (± 10%), 50 or 60 Hz DC Source -48 VDC (-42 to -60 VDC) Power Consumption...
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Page 9: Chapter 2. Installation And Setup
Chapter 2 Installation and Setup This chapter explains how to configure and install MT1100A, MT1100A-DC, MT1101A, MT1101A-DC, MT1102A, and MT1102A-DC converters. After the installation is complete, refer to Chapter 3 for information about operating standalone units. Refer to Chapter 4 for troubleshooting and diagnostics information. -
Page 10: Configuring Standalone Unit
Chapter 2 Installation and Setup 2.3 Configuring Standalone Unit This section provides information on the functions and locations of internal jumpers. Use this information to select the correct setting for your particular application. To install a standalone unit: 1. Determine the required configuration, according to your application, and set the internal jumpers accordingly. -
Page 11: Jumper Locations, E1 Converter
Chapter 2 Installation and Setup TX & RX CODE HDB3 JP11 ANA LOOP Figure 2-1. Jumper Locations, E1 Converter B8ZS B8ZS TX CODE RX CODE JP11 ANA LOOP Figure 2-2. Jumper Locations, T1 Converter Configuring Standalone Unit... -
Page 12: Jumper Settings, E1 Converter
Chapter 2 Installation and Setup Table 2-1. Jumper Settings, E1 Converter Jumper Description Values Default Setting JP1, JP2, JP3, JP4, Select the E1 interface type BAL – Balanced interface (RJ-45 connector) BNC – Unbalanced interface (BNC coax connectors) TX & RX CODE, Selects the transmit and AMI –... -
Page 13: Connecting The Interfaces
Chapter 2 Installation and Setup Closing the Case After completing the internal settings, close the unit case. To close the case: 1. Position the lower half of the case on the flat surface. 2. Install the top cover making sure the top cover guides enter the corresponding recesses at the end of the unit. - Page 14 Chapter 2 Installation and Setup Connecting the AC Power AC power should be supplied to the MT1100A, MT1101A, MT1102A units through the 1.5m (5 ft) standard power cable terminated with a standard 3-prong plug. The cable is provided with the unit. Before connecting power to the unit, verify that the socket outlet is provided with a protective ground contact.
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Page 15: Chapter 3. Operation
Chapter 3 Operation This chapter describes how to operate converters. Installation procedures explained in Chapter 2 must be completed and checked before attempting to operate the unit. 3.1 Front Panel Indicators Figure 3-1 Figure 3-2 show front panels of the E1 and T1converters, respectively. -
Page 16: Operating Instructions
Chapter 3 Operation 3.2 Operating Instructions Turning On The unit starts operating as soon as AC or DC power is connected. Always connect the power cable to the power connector first and then to the mains outlet. The PWR LED lights when power is connected. Operating the Unit Converters operate entirely unattended except when performing system tests. -
Page 17: Chapter 4. Troubleshooting And Diagnostics
Chapter 4 Troubleshooting and Diagnostics 4.1 Performing Local Analog Loopback E1/T1 rate converters support activation of a V.54 diagnostic (loop 3) local loopback. This loopback checks the communication and connection between the unit and the attached DTE, as shown in Figure 4-1. -
Page 18: Deactivating Local Analog Loopback
Chapter 4 Troubleshooting and Diagnostics To activate the local analog loopback from the standalone unit: 1. Open the unit’s case, as described in Chapter 2. Set the JP11 jumper to LOC. The analog loopback is activated and the TST indicator on the front panel turns on. -
Page 19: Chapter 5. Mt1100C, Mt1102C Cards
Chapter 5 MT1100C, MT1102C Cards This chapter describes the card version of the T1 converter, designed for installation in the Rack Nest 2/14 card cage. The chapter contains the following sections: • The Rack Nest 2/14 card cage • MT1100C, MT1102C cards •... -
Page 20: Power Supply
Chapter 5 MT1100C, MT1102C Cards 5.2 Power Supply Power is supplied to the converter cards from the Rack Nest 2/14 power supply via the chassis. Each converter card has two fuses (F5 and F6), which protect the entire system against power failure resulting from a short circuit in one card. The... -
Page 21: Front Panel
ANA pushbutton. The ANA pushbutton serves for activation of the local analog loopback, see Chapter 4 for the details. Figure 5-1. MT1100C, MT1102C Front Panels Front Panel... -
Page 22: Rack Nest 2/14 Front Panel
Chapter 5 MT1100C, MT1102C Cards Figure 5-2. Rack Nest 2/14 Front Panel... -
Page 23: Installing Mt1100C, Mt1102C
Chapter 5 MT1100C, MT1102C Cards 5.4 Installing MT1100C, MT1102C Setting Internal Jumpers and Switches Figure 5-3 illustrates location of the internal jumpers on the PCB. ALB DTE PNL SW TIMING SEL B8ZS TX&RX CODE CHASS-GND DISCON Figure 5-3. PCB Layout Table 5-1. -
Page 24: Installing Mt1100C, Mt1102C Into The Rack Nest 2/14 Card Cage
1. Install the Rack Nest 2/14 card cage in the 19-inch rack. 2. Insert the MT1100C or MT1102C card into one of the Rack Nest 2/14 slots. 3. Push the card into the cage until it is fully inserted into the edge connector inside the rack. - Page 25 Appendix A Interface Connector Wiring A.1 V.35 and RS-530 Interface Connectors Table A-1 lists the pin assignments of the V.35 and RS-530 interface connectors. Table A-1. V.35 and RS-530 Interfaces, Pin Assignments V.35, 34-Pin RS-530, DB-25 Signal Function Circuit Circuit Protective Frame Ground...
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Page 26: Appendix A Interface Connector Wiring
Appendix A Interface Connector Wiring A.2 Line Interface Connector The E1/T1 line interface terminates in 8-pin balanced RJ-45 connector, wired in accordance with Table A-2. Table A-2. Balanced RJ-45 Line Interface Connector, Pin Assignment Function 1, 2 Transmit 4, 5 Receive 3, 6 Line Interface Connector...
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