PairGain HIGAIN HRU-412 Bedienungsanleitung

HIGAIN REMOTE UNIT

PAIRGAIN TECHNOLOGIES, INC.

ENGINEERING SERVICES TECHNICAL PRACTICE

™150-412-108-02B¨

SECTION 150-412-108-02

Model List Number Part Number CLEI Code

HRU-412 8 150-1103-08 T1L2CC0AAA

150-412-108-02, Revision 02

ii July 13, 1998 HRU-412 List 8

Revision History of This Practice

PairGain, and HiGain are registered trademarks of PairGain Technologies, Inc.

Information containedin thisdocumentis company private to PairGain Technologies,Inc.,

and shall not be modified, used, copied, reproduced or disclosed in whole or in part without

the written consent of PairGain.

Other product names mentioned in this practice are used for identification purposes only

and may be trademarks or registered trademarks of their respective companies.

Revision Release Date Revisions Made

02 July 13, 1998 Modified and Updated

01 March 22, 1996 Initial Release

150-412-108-02, Revision 02 Using This Technical Practice

HRU-412 List 8 July 13, 1998 iii

USING THIS TECHNICAL PRACTICE

Two types of messages, identified by icons, may appear in the text.

ABBREVIATIONS

Notes contain information about special circumstances.

Cautions indicate the possibility of equipment damage or the

possibility of personal injury.

AMI Alternate Mark Inversion

BER Bit Error Rate

BPV Bipolar Violations

B8ZS Binary Eight Zero Substitution

CO Central Office

CRC Cyclic Redundancy Check

CSA Carrier Service Area

ES Errored Seconds

ESF Extended Superframe

HDSL High-bit-rate Digital Subscriber Line

HLU HiGain Line Unit

HRU HiGain Remote Unit

Abbreviations 150-412-108-02, Revision 02

iv July 13, 1998 HRU-412 List 8

SF Super Frame

SNR Signal-to-Noise Ratio

SPLB Special Loopback

ZBTSI Zero Byte Time Slot Interface

150-412-108-02, Revision 02 Table of Contents

HRU-412 List 8 July 13, 1998 v

TABLE OF CONTENTS

Overview _______________________________________________ 1

Applications ____________________________________________ 2

Specifications ___________________________________________ 3

Functional Description____________________________________ 5

Operational Capabilities........................................................... 5

Front Panel Features ................................................................ 7

Rear Panel Features................................................................ 10

Local and Line Powering....................................................... 12

Installation ____________________________________________ 14

Unpack and Inspect the Shipment.......................................... 14

Install the HRU-412 List 8..................................................... 14

Installation Test...................................................................... 16

Provision and Monitor Performance _______________________ 18

Connect an ASCII Terminal .................................................. 18

Log On and Use the Menus ................................................... 19

View Span Status..................................................... 22

Set Clock ................................................................. 24

System Settings ....................................................... 25

View Performance Data .......................................... 26

View 7 Day History................................................. 27

View Alarm History................................................28

Loopbacks _____________________________________________ 30

Table of Contents 150-412-108-02, Revision 02

vi July 13, 1998 HRU-412 List 8

Product Support_________________________________________33

Technical Support...................................................................33

Warranty.................................................................................34

FCC Compliance....................................................................35

Modifications..........................................................................35

UL Listing ..............................................................................35

CSA Certification...................................................................36

150-412-108-02, Revision 02 List of Figures

HRU-412 List 8 July 13, 1998 vii

LIST OF FIGURES

1. HRU-412 List 8 Block Diagram ........................................................6

2. HRU-412 List 8 Front Panel ..............................................................7

3. HRU-412 List 8 Rear Panel.............................................................. 10

4. HRU-412 List 8 Pinouts................................................................... 15

5. HRU-412 List 8 Craft Port Wiring...................................................18

6. Remote Logon Screen...................................................................... 20

7. Main Menu, Local Log On............................................................... 21

8. Span Status Screen, No Doublers in Use ......................................... 22

9. Span 1 Status Screen, Doublers in Use ............................................ 23

10. Set Clock Screen ............................................................................ 24

11. System Settings Menu.................................................................... 25

12. Performance Data Screen............................................................... 26

13. 7 Day History Screen ..................................................................... 27

14. Alarm History Screen..................................................................... 28

15. HRU-412 List 8 Loopbacks ........................................................... 30

List of Tables 150-412-108-02, Revision 02

viii July 13, 1998 HRU-412 List 8

LIST OF TABLES

1. HDSL Loss Over Cables.....................................................................3

2. HRU-412 List 8 Front Panel Components..........................................8

3. Rear Panel Components....................................................................11

4. HRU-412 List 8 Alarm History Screen Definitions .........................29

150-412-108-02, Revision 02 Overview

HRU-412 List 8 July 13, 1998 1

OVERVIEW

The PairGain®HiGain®Remote Unit Model HRU-412 List 8 is the remote

end of a repeaterless T1 transmission system. An HRU-412 List 8 connects

to a HiGain Line Unit (HLU), creating a HiGain system which provides 1.544

Mbps transmission on two unconditioned copper pairs over the full Carrier

Service Area (CSA) range. The CSAencompasses approximately 12,000 feet

of AWG 24 wire or 9,000 feet of AWG 26 wire, including bridge taps and

gauge changes. A HiGain system utilizes 2B1Q High-bit-rate Digital

Subscriber Line (HDSL) transmission technology. The HRU-412 List 8

complies with ANSI T1E1.4, T1.403-1989, and T1E1.4/92-002R2 technical

standards and recommendations. The HRU-412 List 8 mounts in a single slot

of an industry standard 400 Mechanics type shelf. The system also complies

with GR-63 Core of Network Equipment Building System (NEBS) Generic

Equipment requirements, and Transport System Generic Requirements

(TSGR) common requirements TR-TSY-000499.

The HRU-412 List 8 features:

•Customer Interface (CI)

•Front panel DS1 and HDSL LEDs

•Front panel loopback button

•Signature resistance on DS1 and HDSL ports

•Generic and addressable repeater loopback activation codes

•Metallic SmartJack loopback (conforms to TR-TSY-000312)

•Provisioning switches for customer premise equipment (CPE) current,

receive (RCV) level, and transmit loss of signal (TLOS) initiated

loopback or alarm

•Line or local power options

•Sealing current

•Front panel jacks for test access

•Craft port

•CPE current monitor test points

•Front panel HDSL margin threshold indicator for each loop

•Lightning and power cross protection on HDSL and DS1 interfaces

Applications 150-412-108-02, Revision 02

2 July 13, 1998 HRU-412 List 8

•784kbps full-duplex 2B1Q HDSL transmission on two pairs

•DS0 blocking support

The HRU-412 List 8 supports PairGain’s 1 x 1 Protection Switching System.

The HRU-412 List 8 can be line powered or locally powered and has a

simplexed sealing current option. The HDSL line input resistive signature is

14 Ω.

APPLICATIONS

A HiGain system, consisting of a HiGain line unit and a HiGain remote unit,

provides a quick and cost-effective way of delivering T1 High Capacity

Digital Service (HCDS) to customers over copper pairs. The HiGain system

can be deployed on two unconditioned, non-loaded copper pairs without

repeaters, and without the need for bridged tap removal or binder group

separation.

The generalguidelines for HiGain system usage isthat each loop has less than

35 dB of loss at 196 kHz, with 135 Ωdriving and terminating impedances.

Table 1 provides a guide for the loss over various cable gauges at 196 kHz

and135Ω.The tableappliestothe HDSL cable pairs between theHiGain line

unitand theHiGainremoteunit.Without specific loop insertion lossdata, add

3 dB for each bridged tap and 1 dB for each cable gauge change.

The dc cable resistance determines the simplex powering resistance path of

the loops. The maximum allowable resistance for a HiGain system is 800 Ω

over two HDSL simplex loops. This means, for example, where 12 kft AWG

24 equals 34.08 dB (insertion loss) resistance is at 622 Ω, which is well below

the limit of 800 Ω.

The HRU-412 List 8 supports PairGain’s 1 x 1 Protection

Switching System.

Andere Handbücher für HIGAIN HRU-412

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