Document Outline

• CentreCOM
• AT-MR840TF
  • Installation Guide
• Electrical Safety and Installation Requirements
• U.S. Federal Communications Commission
• Canadian Department of Communications
  • Table of Contents
    • Chapter1
    • Chapter2
    • Chapter3
    • AppendixA
    • AppendixB
    • AppendixC
    • AppendixD
• Chapter1
  • Product Description
    • Figure1: AT-MR840TF (ST/SC) Front Panel
    • Figure2: AT-MR840TF (ST/SC) Back Panels
    • Figure3: AT-MR840TF Functional Block Diagram
    • Table 1: AT-MR840TF Major Components
    • Table 2: Port and Hub Status LEDs
    • Figure4: Port, Hub, and Network LEDs
    • Figure5: ST/SC Fiber Connectors
    • Figure6: MDI/MDI-X Slide Switch
    • Table 3: MDI/MDI-X Switch
    • Table 4: Power Requirements for AT-MR840TF Models
• Chapter2
  • Installation
    • Before You Begin
    • Power Requirements
    • Installing the Hub
      • Making UTP Port Connections
        • 1. Carefully remove the AT-MR840TF hub from its pa...
        • 2. Position the hub in a location with adequate ve...
        • 3. Attach an AC cord to the hub and make sure that...
        • 4. On the hub side, attach your 10Base-T UTP cable...
        • 5. On the workstation side, attach the other end o...
        • 6. Make sure that the LINK OK LEDs light green. If...
      • Making 10Base-FL Uplink Port Connections
        • 1. Connect the 10Base-FL cables (either SC or ST) ...
        • 2. Make sure that the LINK LED for the fiber uplin...
      • Making Cascading Connections
        • 1. From the first hub, connect Port 8 to any of th...
        • 2. Make sure the MDI/MDI-X switch for Port 8 is se...
        • 3. If you cascade two hubs using Port 8, make sure...
        • Table 5: MDI/MDI-X Switch Position Rules
      • Verifying Installation
        • 1. Make sure that the LINK OK LED of the first con...
        • 2. After a successful connection, disconnect the a...
        • 3. Establish a connection from a device connected ...
        • 4. Once the connection between devices attached to...
        • 5. If all ports test successfully, install the res...
        • 1. Check that the attached Data Terminal Equipment...
        • 2. Check that the Link signal has not been disable...
      • Verifying Collision LED
• Chapter3
  • Configurations
    • Standalone Configuration
      • Figure7: AT-MR840TF Standalone Configuration
    • Fiber Optic Backbone Network Configuration
      • Figure8: AT-MR840TF Fiber Backbone Configuration...
    • Cascade Configuration
      • Figure9: Port 8 Cascading Hubs
      • The Four-Repeater Rule
    • Technical Specifications
      • The AT-MR840TF Specifications
        • Physical
        • Electrical Rating
        • Environmental
        • Certification
        • Connector Pinouts for UTP and Uplink Port
          • Table 6: Hub to NIC Pin Assignments
  • MDI/MDIX switch must be set to MDIX for UTP
  • RX+
  • 1
  • <-----------
  • TX+
  • RX-
  • 2
  • <-----------
  • TX-
  • TX+
  • 3
  • ----------->
  • RX+
  • TX-
  • 6
  • ----------->
  • RX-
    • Table 7: Hub to Hub Pin Assignments
  • MDI/MDI-X switch must be set to MDI for fiber
  • TX+
  • 1
  • ----------->
  • RX+
  • MDI/MDI-X switch must be set to MDI-X
  • TX-
  • 2
  • ----------->
  • RX-
  • RX+
  • 3
  • <-----------
  • TX+
  • RX-
  • 6
  • <-----------
  • TX-
    • Straight-through Cable Wiring
      • Table 8: Straight-through Cable RJ45 Pin Assignmen...
  • 1 (TX+)
  • 1 (TX+)
  • 2 (TX-)
  • 2 (TX-)
  • 3 (RX+)
  • 3 (RX+)
  • 6 (RX-)
  • 6 (RX-)
    • Crossover Cable Wiring
      • Table 9: Crossover Cable RJ45 Pin Assignments
  • 1 (TX+)
  • 3 (RX+)
  • 2 (TX-)
  • 6 (RX-)
  • 3 (RX+)
  • 1 (TX+)
  • 6 (RX-)
  • 2 (TX-)
    • 10Base-T/10Base-FL Network Specifications
      • Table 10: IEEE 802.3 10Base-T/10Base-FL Network Sp...
  • Media
  • Twisted Pair Cable
  • ST/SC fiber optic cable
  • Topology
  • Star, Tree
  • Star, Tree
  • External Devices
  • Network Adapter Card
  • Network Adapter Card
  • Maximum Segment Length
  • 100 meters (328 ft.)
  • 2K (1.25 miles)
  • Required Category
  • 3, 4, or 5
  • 850 NM
  • Maximum Devices per Segment
  • 12
  • 2 MAUs/segment
  • Required gauge and impedance
  • 22 to 26 AWG TP wire with 100 W impedance
  • Multimode fiber 50/125 or 62.5/125 micron
  • Maximum Devices per Network
  • 1024
  • 1024
    • Technical Support Fax Order
      • AT-MR840TF Installation Guide Feedback
        • Where To Find Us
      • Allied Telesyn International Corp. 19015 North Cre...
      • Allied Telesyn International Corp. 950 Kifer Road ...