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MAY 2001
MT255A-M
MT256A-F
MT257A
G.703 Adapters and
Balun Mate II
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
Get other manuals https://www.bkmanuals.com
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Summary of Contents for Black Box G.703
- 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 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 2 FCC/IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO-FREQUENCY INTERFERENCE STATEMENTS 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, might cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference...
- Page 3 G.703 ADAPTERS AND BALUN MATE II EUROPEAN UNION DECLARATION OF CONFORMITY The manufacturer declares that this equipment complies with the requirements of the EMC Directive 89/336/EEC, as well as the Low Voltage Directive (LVD). Get other manuals https://www.bkmanuals.com...
- Page 4 NOM STATEMENT NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT 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.
- Page 5 G.703 ADAPTERS AND BALUN MATE II 10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor. 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el...
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Page 6: Table Of Contents
1. Specifications .............. 6 2. Introduction ............... 8 3. Configuration ............12 4. Installation and Operation ........15 5. Troubleshooting ............17 5.1 Calling Black Box ..........17 5.2 Shipping and Packaging ........18 Appendix: Block Diagram ..........19 Get other manuals https://www.bkmanuals.com... -
Page 7: Specifications
G.703 ADAPTERS AND BALUN MATE II 1. Specifications Compliance: CE, FCC Part 15 Subpart J Class A, IC Class/ classe A Interfaces: ITU CTR-12 G.703 (unstructured): Coaxial: Unbalanced 75-ohm (RG-59 or 2002 cable); Twisted-pair: Balanced 120-ohm (shielded or unshielded cable) Data Rate: Up to 2.048 Mbps (E1) - Page 8 CHAPTER 1: Specifications Isolation: 500 volts AC/DC between coax and twisted-pair sides Temperature Tolerance: 32 to 122˚F (0 to 50˚C) Humidity Tolerance: 5 to 95% noncondensing Power: From interfaces Size: MT255A-M (excluding cable pigtails), MT256A-F: 2.7"H x 1.7"W x 0.8"D (6.9 x 4.3 x 2 cm); MT257A: Rack chassis: 3.5"H x 19"W x 1.9"D (8.9 x 48.3 x 4.8 cm);...
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Page 9: Introduction
6" (15.2-cm) coaxial pigtails with male connectors that can plug into the female coaxial connectors of an existing device or termination. The MT256A-F model of the G.703 Adapter has a pair of female coaxial connectors that existing coaxial cables can be plugged into. - Page 10 The coaxial connectors on all of these models are the 1.6/5.6-mm types used extensively in telephone sites. On the twisted-pair side, each G.703 Adapter and each of the Balun Mate II’s port-card modules has a standard RJ-45 jack.
- Page 11 • Balun Mate II can be mounted in 2U of vertical space in a 19" rack and can patch as many as sixteen terminations. Figures 2-1 and 2-2 on the next page show typical G.703 Adapter applications. The Balun Mate II will also be used for these kinds of applications.
- Page 12 G.703 Ports Wide-Area Network Twisted-Pair Adapter Cabling Figure 2-1. Using a single Adapter to connect a coaxial G.703 device to a twisted-pair G.703 device. Telco Distribution Frame (PBX, Mux, etc.) Transmission Equipment with Coax G.703 Ports (CSU/DSU, NTU, FRAD, etc.) with Coax G.703 Ports...
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Page 13: Configuration
G.703 ADAPTERS AND BALUN MATE II 3. Configuration The G.703 Adapters and the Balun Mate II have only one user-settable configuration option. They express Transmit Data (TX) shield to the twisted-pair cabling on RJ-45 Pin 3 and Receive Data (RX) Shield on RJ-45 Pin 6. - Page 14 CHAPTER 3: Configuration installed settings, JP1 links RJ-45 Pin 3 to the coax TX shield, while JP2 links RJ-45 Pin 6 to the coax RX shield. To remove these jumpers in order to break these links, you’ll need to open the case of your Adapter or temporarily remove each port-card module from your Balun Mate II.
- Page 15 G.703 ADAPTERS AND BALUN MATE II 3. Looking down at the top of the circuit board with the RJ-45 jack facing to the left, you should be able to see both jumpers in the middle of the board: JP1 toward the back and JP2 toward the front.
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Page 16: Installation And Operation
CHAPTER 4: Installation and Operation 4. Installation and Operation To connect a G.703 Adapter or Balun Mate II to your G.703 devices and/or networks, take these steps: 1. If you are using an MT255A-M Adapter, connect its coaxial pigtails to your device’s coaxial G.703 ports. - Page 17 G.703 ADAPTERS AND BALUN MATE II As soon as you connect the Adapter or Balun Mate II to a working G.703 device/network on both the coaxial and twisted-pair sides, it will begin operating immediately, drawing power from the interfaces and translating between them.
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Page 18: Troubleshooting
CHAPTER 5: Troubleshooting 5. Troubleshooting 5.1 Calling Black Box If your G.703 Adapter or Balun Mate II seems to be malfunctioning, do not attempt to alter or repair it. It contains no user-serviceable parts. Call Black Box Technical Support at 724-746-5500; the problem might be solvable over the phone. -
Page 19: Shipping And Packaging
G.703 ADAPTERS AND BALUN MATE II 5.2 Shipping and Packaging If you need to transport or ship your G.703 Adapter or Balun Mate II: • Package it carefully. We recommend that you use the original container. • If the shipping is return- or repair-related, include everything you received with the Adapter or Balun Mate II when you pack it. -
Page 20: Appendix: Block Diagram
APPENDIX: Block Diagram Appendix: Block Diagram Coax Transmit Shield Shield on Transmit RJ-45 Shield on Jack RJ-45 Pin 3 Transmit (TX) Transmit (TX) Signal Twisted Coax Conversion Pair Receive (RX) Receive (RX) Coax Receive Shield Receive Shield on RJ-45 Pin 6 Although the arrows in this diagram showing data flow are bidirectional, and the Adapters and Balun Mate II do support bidirectional data transfer, the direction of flow... - Page 21 NOTES Get other manuals https://www.bkmanuals.com...
- Page 22 © Copyright 2001. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 Get other manuals https://www.bkmanuals.com...