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PairGain HiGain HLU-388 List 5A Quick Installation Manual

Line unit
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H G
I
AIN
List 5A Line Unit
HLU-388
Quick Installation Guide
5A

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Summary of Contents for PairGain HiGain HLU-388 List 5A

  • Page 1 List 5A Line Unit HLU-388 Quick Installation Guide...

  • Page 2: Specifications

    HLU-388 L ® ® The PairGain HiGain Line Unit HLU-388 List 5A 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: Installation

    NSTALLATION To ensure proper installation of the HLU-388 List 5A: Lift up the entire front panel and align the HLU-388 List 5A with the shelf rails. Slide the unit in and press the front panel down to secure. OWER EQUENCE When the HLU powers up, the four-character display illuminates and reports status messages.
  • Page 5 HLU-388 List 5A technical practice, document number 150-388-151-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 Front-Panel Diagnostic Messages Message Description (normal operating messages in bold) 1=xx or 2=yy Indicates the power of the received HDSL signal on each loop relative to noise. Any value of 06 (dB) or greater is adequate for reliable system operation. ACQ1 or ACQ2 The multiplexers of the HLU and the HRU or the first doubler are trying to establish synchronization over Loop 1 or Loop 2 of Span 1.
  • Page 7 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.