Black Box MicroNTU G.703 AC Series Manual
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Black Box MicroNTU G.703 AC Series Manual

Black Box MicroNTU G.703 AC Series Manual

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MicroNTU G.703 (AC)
MicroNTU G.703 (VDC)
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
MT240A-R2
MT240A-48V-R2
EHN092-530M
EHN092-530F
M i c r o N
o d e
T e s t M
a c k
L o o p b
l
N o r m a
L o o p
AUGUST 1998
EHN092-V35M
EHN092-V35F
EHN092-X21M
EHN092-X21F
0 3
T U G . 7

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 MICRONTU G.703 (AC OR VDC) FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS 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, may cause interference to radio communication.
  • Page 3 MICRONTU G.703 (AC OR VDC) 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 4 MICRONTU G.703 (AC OR VDC) 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.

  • Page 5: Table Of Contents

    MICRONTU G.703 (AC OR VDC) Contents 1. Specifications......................5 2. Introduction .......................6 3. Configuration ......................7 3.1 External DIP-Switch Settings................7 3.2 Internal Jumper Settings ..................11 4. Installation........................16 4.1 Connection to the G.703 Network ..............16 4.1.1 Twisted-Pair (120-Ohm) Connection............16 4.1.2 Dual Coax BNC (75-Ohm) Connection ..........17 4.2 Connection to the Terminal Device..............17 4.3 Connection to the Power Source..............17 5.

  • Page 6: Specifications

    MICRONTU G.703 (AC OR VDC) 1. Specifications G.703 Network Interface Network Rate 2.048 Mbps Network Connectors Two BNC (75-ohm) and one modular RJ-45 connector (120-ohm) Terminal Interface EIA RS-530 (RS-422), X.21, V.35 on UD-26 using cables EHN092 Terminal Rate 2.048 Mbps (all models); 1.024 Mbps, 512 Kbps, 256 Kbps (standalone only) Terminal Connector UD-26F...

  • Page 7: Introduction

    MICRONTU G.703 (AC OR VDC) 2. Introduction The MicroNTU G.703 performs the tasks of three separate devices: 1. As a modem, the MicroNTU G.703 receives unstructured, synchronous 2.048-Mbps data from a G.703 network and sends it out of its DTE port (configured as DCE).

  • Page 8: Configuration

    MICRONTU G.703 (AC OR VDC) 3. Configuration The MicroNTU G.703 is equipped with three sets of eight DIP switches (externally accessible), as well as seven jumpers (internal). These DIP switches and jumpers allow configuration of clocking, data rate, test and terminal-interface options. The MicroNTU G.703 (AC) is also equipped with an internal switch that allows selection of 115- or 230-VAC power inputs.
  • Page 9 MICRONTU G.703 (AC OR VDC) 1 2 3 4 5 6 7 8 Figure 3-2. Closeup of configuration switches. Table 3-1. Summary of DIP-switch default settings for set S1 S1 Summary Table Position Function Factory Default S1-1 X.21/EIA-530 EIA-530 or V.35* X.21* S1-2 Not Used...
  • Page 10 MICRONTU G.703 (AC OR VDC) S1-1 Setting EIA-530 (RS-422) interface X.21 interface S1-2 and S1-3: Not Used S1-2 and S1-3 are not used. S1-4 and S1-5: Rate Adaptation Set Switches S1-4 and S1-5 together to allow the MicroNTU G.703 to adapt to terminal devices that run at data rates less than 2.048 Mbps.
  • Page 11 MICRONTU G.703 (AC OR VDC) S1-7: Master/Slave Clock Set Switch S1-7 to allow the MicroNTU G.703 to provide the master clock, or recover the clock from an external source. S1-7 Setting MicroNTU G.703 is master MicroNTU is slave (clock is recovered from the network) S1-8: Loopback Test Enable Depending upon the setting of Switch S1-8, either the MicroNTU G.703 will be continually in loopback mode, or loopback mode will be enabled by pressing and...

  • Page 12: Internal Jumper Settings

    MICRONTU G.703 (AC OR VDC) 3.2 Internal Jumper Settings The MicroNTU G.703’s seven jumpers are located on the PC board inside the unit. (If you have an AC model, this is also the location of the power-input switch.) To access the jumpers: 1) Turn the power switch off.
  • Page 13 MICRONTU G.703 (AC OR VDC) Figure 3-4. Opening the MicroNTU G.703’s case. 4) Remove the Network Interface Module by lifting it gently upward until it comes free from the MicroNTU G.703’s main PC board. 5) Slide out the Network Interface Module and locate the jumpers on the bottom side of the board.
  • Page 14 MICRONTU G.703 (AC OR VDC) The internal jumpers mounted on the MicroNTU G.703’s PC board (labeled LK1 through LK7) are used to configure the 75- or 120-ohm network link parameters. Figure 3-5 shows the location of the MicroNTU G.703’s jumpers on the internal PC board.
  • Page 15 MICRONTU G.703 (AC OR VDC) Listed below are each jumper’s function and possible settings. When configuring the jumpers, take care not to lose the individual straps. LK1: 75-Ohm Transmit Shield-to-Ground Connection This setting determines whether the shield of the 75-ohm (coax) transmit cable is connected to earth ground.
  • Page 16 MICRONTU G.703 (AC OR VDC) Setting Strap On 120-ohm RX Shield-to-GND Connection Made Strap Off 120-ohm RX Shield-to-GND Connection Broken LK5: Configuration Auto-Sense This setting determines whether the host can automatically sense the configuration of the MicroNTU. The operation of the MicroNTU is not affected by this jumper setting.

  • Page 17: Installation

    MICRONTU G.703 (AC OR VDC) 4. Installation Once the MicroNTU G.703 is properly configured, it is ready to connect to your system. This section tells you how to connect the MicroNTU G.703 to the G.703 network and terminal-device interfaces. 4.1 Connection to the G.703 Network The MicroNTU G.703 supports 2.048-Mbps communication over an unstructured G.703 network.

  • Page 18: Dual Coax Bnc (75-Ohm) Connection

    MICRONTU G.703 (AC OR VDC) 4.1.2 D BNC (75-O ONNECTION In addition to the 120-ohm twisted-pair connection, the MicroNTU G.703 is equipped with dual female BNCs (TX and RX) for connection to a 75-ohm dual coax G.703 network interface. The outer conductor of the coax cable is isolated from system earth ground.

  • Page 19: Operation

    MICRONTU G.703 (AC OR VDC) 5. Operation Once the MicroNTU G.703 is configured and installed, it should operate transparently. 5.1 Power-Up To apply power to the MicroNTU G.703, first be sure that you have read Section 3.3, and that the unit has the proper voltage setting and fuse. The wrong setting or fuse could result in damage to the unit and connected equipment, and may constitute a fire hazard.

  • Page 20: Loopback Test (Lal)

    MICRONTU G.703 (AC OR VDC) Power Glows red when the MicroNTU G.703 is powered up. Glows green when the MicroNTU G.703 is receiving Network correctly encoded data from the line-interface equipment. Master Clock Glows green when the MicroNTU G.703 is configured as the master-clock unit.
  • Page 21 MICRONTU G.703 (AC OR VDC) NOTE You must set the MicroNTU G.703 to Master Clock mode to operate the LAL test.

  • Page 22: Appendix A. Pin Configurations

    MICRONTU G.703 (AC OR VDC) Appendix A: Pin Configurations UD26 FEMALE INTERFACE (DCE WIRING) 13 - (CTS/) Clear to Send Not Used - 26 12 - (TC/) Transmit Clock Not Used - 25 11 - (XTC/) Network Clock Network Clock (XTC) - 24 10 - (CD/) Carrier Detect Data Term Ready (DTR/) - 23 9 - (RC/) Recieve Clock...

  • Page 23: Appendix B. Factory Parts And Accessories

    MICRONTU G.703 (AC OR VDC) Appendix B: Factory Parts and Accessories B.1 Basic Standalone Units The MicroNTU G.703 standalone digital modem is available in two versions, depending upon the power supply installed. The AC version is supplied with a power cord. The DC version is supplied without a power cord. All versions of the MicroNTU are supplied without a terminal (DTE) interface cable.

  • Page 24: Appendix C. Safety Warnings And Requirements

    MICRONTU G.703 (AC OR VDC) Appendix C: Safety Warnings and Requirements for UK Users If you use the MicroNTU in the United Kingdom, these warning notices apply to the Input Port, the port marked “Network.” WARNING! The port marked “SAFETY WARNING: see instructions for use” does not provide isolation sufficient to satisfy the requirements of BS6301;...
  • Page 25 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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Mt240a-r2Microntu g.703 vdc seriesEhn092-v35fMt240a-48v-r2Ehn092-530mEhn092-x21m ... Show all

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