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PairGain HiGain HLU-231 List 8E Quick Installation Manual

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Summary of Contents for PairGain HiGain HLU-231 List 8E

  • Page 2: Specifications

    HLU-231 L ® ® The PairGain HiGain Line Unit HLU-231 List 8E is the Central Office (CO) side of a repeaterless, T1 transmission system. When used in conjunction with a HiGain Remote Unit (HRU), the system provides 1.544 Mbps transmission on two unconditioned copper pairs over the full Carrier Service Area (CSA) range.
  • Page 3 If the HLU is communicating with the next span device, the following occurs: The Status LED flashes green while acquiring each device in the system, and turns a steady green when the entire system is operating without any alarms. The four-character display reports margin (signal-to-noise ratio) readings and insertion loss. If the status LED is not solid green, the display reports alarm conditions (see the Front Panel Alarm Messages table inside).
  • Page 4 HLU-231 List 8E Technical Practice...
  • Page 5 150-231-185-xx. It can be downloaded from the Customer site portion of the PairGain Web page at www.pairgain.com . A password is required to access the Customer site web pages. If you do not have a password, contact your PairGain sales representative.
  • Page 6 System Configuration Codes Code Description VER xxxx The release revision of the firmware (appears during the System Settings review mode). LIST xxxx The model number of the product (appears during the System Settings review mode). FRM xxxx Indicates the type of frame pattern being received from the DSX-1, where xxxx is SF, ESF, UNFR, or NONE).

  • Page 7: System Settings

    System Settings Display Code Description (default values in bold) Sets the DSX-1 Equalizer to: EXT (replaces the Internal Equalizer with an External Equalizer), 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.), 399 (399 to 533 ft.), 533 (533 to 655 ft.). LBPK Enables (ENA) or disables (DIS) all inband SMJK loopback commands.
  • Page 8 Do not try to repair the unit. If it fails, replace it with another unit and return the faulty unit to PairGain for repair. Any modifications of the unit by anyone other than an authorized PairGain representative voids the warranty.