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CopperOptics PairGain HiGain ELU-319 List 5 Manual

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PAIRGAIN TECHNOLOGIES
Technical Practice
Engineering - PLANT Series
P
G
AIR
CONTENTS
CAUTION
This product incorporates static sensitive
components. Proper electrostatic discharge
procedures must be followed.
T
AIN
ECHNOLOGIES
MODEL ELU-319 Issue 1
List 5, PairGain #150-1236-05 (75 Ohm)
List 6, PairGain #150-1236-06 (120 Ohm)

H
G
I
AIN
PAGE
2
2
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3
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11
Figure 1. ELU-319 Front Panel. The PairGain ELU-319
is the local unit used in conjunction with the ERU-412
remote unit to provide a complete HiGain HDSL system.
Section 150-319-251
Revision 01
July 6, 1995
L
U
™
INE
NIT
Page 1

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  • Page 1: Table Of Contents

    PAIRGAIN TECHNOLOGIES Section 150-319-251 Technical Practice Revision 01 Engineering - PLANT Series July 6, 1995 ™ ECHNOLOGIES MODEL ELU-319 Issue 1 List 5, PairGain #150-1236-05 (75 Ohm) List 6, PairGain #150-1236-06 (120 Ohm) CONTENTS PAGE A. PRODUCT OVERVIEW 1. DESCRIPTION AND FEATURES 2.

  • Page 2: Product Overview

    Section 150-319-251 Revision 01 A. PRODUCT OVERVIEW • Margin threshold alarm 1. DESCRIPTION AND FEATURES • Single step default setting 1.01 PairGain's HiGain Line Units Model ELU- • Circuit ID option 319, Lists 5 and 6 (Figure 1), are the Public •...

  • Page 3: Specifications

    Section 150-319-251 Revision 01 G.703 Line Rate 2.04 The ELU to ERU operating ranges, on unimpaired cable pairs, are shown in Table 2.048 Mbps ± 200 bps 2 as a function of cable gauge and average margin. G.703 Line Format TABLE 2.

  • Page 4: Warranty

    Section 150-319-251 Revision 01 B. FUNCTIONAL DESCRIPTION 5. WARRANTY 5.01 PairGain Technologies warrants this product 7. OPERATIONAL CAPABILITIES to be free of defects and to be fully 7.01 HiGain utilizes PairGain's 2-Bits-1- functional for a period of 36 months from the date of Quaternary (2B1Q) HDSL transceiver original shipment, given proper installation.
  • Page 5 Section 150-319-251 Revision 01 7.09 enable the ELU-319 to determine if errors are The ELU-319 contains two separate power present on the channel due to excessive converters. The main power supply impairments caused by impulse or crosstalk noise. converts -48V local battery to logic power for the ELU-319 circuits.
  • Page 6 Section 150-319-251 Revision 01 7.11 Note that the worst case conditions under 7.17 Pin H of the ELU-319 is the minor alarm (MNRALM) output pin. This pin must never which these parameters were measured include a 2.51-km, 0.4-mm loop, a fully loaded 22- operate above 0V or below -60V.

  • Page 7: System Parameter Settings

    Section 150-319-251 Revision 01 parameters in non-volatile RAM to prevent their loss 7.19 Setting the ALM option to DIS(able) only pre- vents the unit from activating the MNRALM in the event that shelf power is lost or the ELU-319 output alarm bus on pin H on a minor alarm event. is unplugged.

  • Page 8: Maintenance Port Operation

    Section 150-319-251 Revision 01 TABLE 3. SYSTEM PARAMETER OPTION SETTINGS Parameter Option Description PWRF (Power Feed) Disables powering to the ERU over the HDSL pairs. ENA* Enables powering to the ERU over the HDSL pairs. ESAL (Errored Seconds Alarm Activates MNRALM (on pin H) after 17 Errored Seconds (17 HDSL CRC Threshold) errors on either HDSL loop or a total of 17 BPVs and FERR) occur within 24 hours.

  • Page 9: Loopback Design Description

    Section 150-319-251 Revision 01 pushbuttons or from the maintenance terminal. The HiGain system does not respond to any in-band codes . TERMINAL 10.02 Depressing both the MODE and SEL pushbuttons on the front panel for at least three seconds initiates a MANUAL loopback session.

  • Page 10: Installation And Test

    Section 150-319-251 Revision 01 C. INSTALLATION AND TEST 11. INSTALLATION OPTIONS 11.01 Upon receipt of equipment, visually inspect for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to PairGain Technologies.

  • Page 11: Testing Procedures

    Section 150-319-251 Revision 01 12. TESTING PROCEDURES positive connection with the mounting assembly's connector. 12.01 Table 4 lists the four-character front panel message displays of the ELU-319. This 12.03 The transmit and receive G.703 ports have display energizes when power is initially applied to splitting access and bridging miniature 210- the ELU-319;...
  • Page 12 Section 150-319-251 Revision 01 TABLE 4. ELU-319 FOUR-CHARACTER FRONT PANEL MESSAGES (CONTINUED) Message Full Name Description SELF TEST The ELU-319 is in a self test mode. This occurs every power ON/OFF cycle. The self-test sequence includes the input G.703 transceiver chip when the HDSL loops are not in sync. This can cause the AIS pattern, normally transmitted from the ELU during this time, to exhibit bipolar violations (BPVs).
  • Page 13 Section 150-319-251 Revision 01 TABLE 5. ELU-319 STATUS MENU DEFINITIONS Message Full Name Description ALARMS NONE No Alarms LLOS Local Loss of Signal No signal from local G.703 interface. RLOS Remote Loss of Signal No signal from remote G.703 interface. LOSW 1 (2) Loss of (HDSL) Sync Word 1 HDSL LOOP 1 or 2 has lost frame sync.
  • Page 14 Section 150-319-251 Revision 01 TABLE 5. ELU-319 STATUS MENU DEFINITIONS (CONTINUED) Message Full Name Description CHREV Channels Reversed Channel (loop) 1 & 2 HDSL pairs are reversed at the EDU or ERU line input ports. CREM Customer Remote Loopback Loopback at ERU-412 (local) towards customer interface (CI) initiated from the maintenance terminal or by pressing both MODE and SEL pushbuttons on the ELU-319 front panel.
  • Page 15 Section 150-319-251 Revision 01 Figure 6. Main Menu. Figure 7. Span Status Display (no Doubler). Page 15...
  • Page 16 Section 150-319-251 Revision 01 Figure 8. Span 1 Status Display (in system with one Doubler). Figure 9. Span 2 Status Display (in system with one Doubler). Page 16...
  • Page 17 Section 150-319-251 Revision 01 Figure 10. System Settings Menu. Figure 11. Set Clock Menu. Page 17...
  • Page 18 Section 150-319-251 Revision 01 Figure 12. Performance Data Display (no Doubler). Figure 13. Span 1 Performance Data Display (in system with no Doubler). Page 18...
  • Page 19 Section 150-319-251 Revision 01 Figure 14. Span 2 Performance Data Display (in system with no Doubler). Figure 15. Performance Data History Display (no Doubler). Page 19...
  • Page 20 Section 150-319-251 Revision 01 Figure 16. Span 1 Performance Data History Display (in system with one Doubler). Figure 17. Span 2 Performance Data History Display (in system with one Doubler). Page 20...
  • Page 21 Section 150-319-251 Revision 01 Figure 18. Alarm History (no Doubler). Figure 19. Span 1 Alarm History (in system with one Doubler). Page 21...
  • Page 22 Section 150-319-251 Revision 01 Figure 20. Span 2 Alarm History (in system with one Doubler). Figure 21. Loopback Menu (no Doubler). Page 22...
  • Page 23 Section 150-319-251 Revision 01 Figure 22. Loopback Menu (in system with one Doubler). Copyright © 1995, PairGain Technologies, Inc. PairGain is a registered trademark, CopperOptics and HiGain are trademarks of PairGain Technologies, Inc. Page 23...

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