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PairGain HiGain HLU-231 Manual

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PAIRGAIN TECHNOLOGIES
Technical Practice
Engineering - PLANT Series
PairGain Technologies HiGain Line Unit
List 3D, PairGain # 150-1111-34, CLEI Code: T1LIE044AA
CONTENTS
CAUTION
This product incorporates static sensitive components.
Proper electrostatic discharge procedures must be
followed.
Copyright © 1995, PairGain Technologies, Inc. PairGain and HiGain are trademarks of PairGain Technologies.
01
MODEL HLU-231 Issue 1
PAGE
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4
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Figure 1. HLU-231 List3D Front Panel. The PairGain
HLU-231 is the local unit used in conjunction with the HRU-
412 remote unit to provide a complete HiGain HDSL
system.
Section 150-231-134
Revision 01
February 10, 1995
Page 1

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Summary of Contents for PairGain HiGain HLU-231

  • Page 1: Table Of Contents

    Figure 1. HLU-231 List3D Front Panel. The PairGain followed. HLU-231 is the local unit used in conjunction with the HRU- 412 remote unit to provide a complete HiGain HDSL system. Copyright © 1995, PairGain Technologies, Inc. PairGain and HiGain are trademarks of PairGain Technologies. Page 1...

  • Page 2: Product Overview

    1. DESCRIPTION AND FEATURES deploy method for delivering T-1 High 1.01 PairGain’s HiGain Line Unit Model HLU-231 Capacity Digital Service (HCDS) over metallic pairs. Issue 1, List 3D (Figure 1) is the Central The fiber-like quality service is deployed over two Office (CO) side of a repeater-less T-1 transmission unconditioned, non-loaded copper pairs.

  • Page 3: Certification

    -130 to -210 VDC fails, replace it with another unit and return Margin Indicator the faulty unit to PairGain for repair. Any modifications of the unit by anyone other than an authorized Displays span SNR margin for both spans relative PairGain representative voids the warranty.

  • Page 4: Functional Description

    Figure 2. HLU-231 List 3D Block Diagram. PairGain’s HDSL technology provides full-duplex services at standard T-1 rates over copper wires between an HLU and an HRU, which comprise one HiGain system.
  • Page 5 Issue 1, Section 150-231-134 Revision 01 6.09 The HLU-231 contains two separate power 6.05 The received HDSL channels are processed by the transceiver and then passed on to the converters. The main power supply converts HLU-231 multiplexer module. The multiplexer -48 VDC local battery to logic power for the HLU-231 circuits.

  • Page 6: Power Consumption

    Section 150-231-134 Revision 01 7. POWER CONSUMPTION 7.04 In CO locations, the maximum power dissipation for open faced, natural convection 7.01 The Maximum Current drain is the current cooled mountings is 120 W/sq. ft. as stated in NEBS drawn from the shelf power supply when it is standard TR-NWT-000063 section 4.2.3.
  • Page 7 (60 mA CPE I ON) per shelf (60 mA CPE I OFF) -48V New Bays (J98725P,J98725P,J98725P) SXSS (CO) (J98725CA) Original 220 Bays 3.43 (J98725A,B,C,D,E&F) Upgraded 220 Bays (J98725A,B,C,D,E&F) SXSS (80 D Cabinet) Kentrox T-Term 220 PairGain HCS-417 Page 7...

  • Page 8: Alarm Description

    Section 150-231-134 Revision 01 8. ALARM DESCRIPTION alarm threshold to 0. The MNALRM can be retired by executing the Alarm Cut Off (ACO) option. This is 8.01 The normally open alarm contacts available accomplished by pressing the SEL button on the front across pins 20 &...

  • Page 9: System Option Settings

    Issue 1, Section 150-231-134 Revision 01 if the FRMG option is set to AUTO. If FRMG is set to 9. SYSTEM OPTION SETTINGS UNFR, it displays UNFR. See Table 10 for these 9.01 The HLU-231 contains a non-volatile RAM additional messages. The line code parameter mimics which stores the system option settings.
  • Page 10 HRU that do not support these newer options. causes the AIS pattern to be transmitted at both T-1 9.13 Note that the PairGain HCS-417 & 418 outputs when either of the two HDSL loops experience an out of sync (LOSW) condition or when shelves and some 220-configuration shelves a margin alarm occurs.
  • Page 11 Issue 1, Section 150-231-134 Revision 01 TABLE 3. SYSTEM OPTION SETTINGS Mode Selection Description “EQL” EXT* Replaces the internal equalizer with a 12 Vp/p driver for external equalizers. Sets Equalizer to DSX-1 for 0-133 feet. Sets Equalizer to DSX-1 for 133-266 feet. Sets Equalizer to DSX-1 for 266-399 feet.
  • Page 12 Section 150-231-134 Revision 01 TABLE 3. SYSTEM OPTION SETTINGS (CONTINUED) Mode Selection Description “LNCD” B8ZS Places both the HLU & HRU into their B8ZS modes. AMI* Places both the HLU & HRU into their AMI modes. “FRMG” AUTO Configures HiGain to operate in an auto-framing (AUTO) mode in which it continuously searches the input T1 bit stream for a valid SF or ESF frame pattern.

  • Page 13: Loopback Design Description

    Issue 1, Section 150-231-134 Revision 01 10. LOOPBACK DESIGN DESCRIPTION the network with NDU2 (3 in 6) or towards the customer CDU2 (5 in 6). Either loop-up condition is 10.01 The HiGain family of loopbacks is shown in terminated (looped-down) with the 3 in 5 loop-down Figure 4.
  • Page 14 This displays the Loopback Menu, shown HiGain application includes the HLU, HRU & two in- in Figure 15, from which any of the eight loopbacks line HDU-451 doublers. Refer to the PairGain HiGain can be initiated. Intelligent Repeater Application Note # 910 Part # 325-910-100 for more SPLB details.

  • Page 15: Installation, Test And Maintenance

    If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to PairGain. Figure 5. HLU-231 List 3D Pin-Outs. The active pins are highlighted in black in the above illustration. Page 15...

  • Page 16: Test Procedures

    Section 150-231-134 Revision 01 12. TEST PROCEDURES 12.03 If trouble is encountered on the DSX-1 interface, verify that the unit is making a 12.01 Tables 4 through 9 provide step by step test positive connection with the mounting assembly’s procedures for the HLU-231 unit as a function connector.
  • Page 17 Issue 1, Section 150-231-134 Revision 01 TABLE 5. TEST PROCEDURES FOR A1LB OPTION Step Action Send into the HLU the inband ARMING and NIU (Network Interface Unit) LPBK code 11000 for at least 5 seconds, or at least 4 repetitions of the 16-bit ESF Data Link ARMING code 0001 0010 11111111.
  • Page 18 Section 150-231-134 Revision 01 TABLE 5. TEST PROCEDURES FOR A1LB OPTION (CONTINUED) Step Action Using the following codes, a NETWORK tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 4. A CUSTOMER tester can activate loopbacks CLOC or CREM.
  • Page 19 Issue 1, Section 150-231-134 Revision 01 TABLE 6. TEST PROCEDURES FOR A2LB OPTION Step Action Send into the HLU the inband ARMING and NIU (Network Interface Unit) LPBK code 11000 for at least 5 seconds, or at least 4 repetitions of the 16-bit ESF Data Link ARMING code 0001 0010 11111111.
  • Page 20 Section 150-231-134 Revision 01 TABLE 6. TEST PROCEDURES FOR A2LB OPTION (CONTINUED) Step Action Using the following codes, a NETWORK tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 4. A CUSTOMER tester can activate loopbacks CLOC or CREM.
  • Page 21 Issue 1, Section 150-231-134 Revision 01 TABLE 7. TEST PROCEDURES FOR A3LB OPTION Step Action The HiGain Line Unit can be looped back (NLOC in Figure 4) by sending the (Addressable Office Repeater) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least 5 seconds.
  • Page 22 Section 150-231-134 Revision 01 TABLE 8. TEST PROCEDURES FOR A4LB OPTION Step Action The HiGain Line Unit can be looped back (NLOC in Figure 4) by sending the (Addressable Office Repeater) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least 5 seconds.
  • Page 23 Issue 1, Section 150-231-134 Revision 01 TABLE 9. TEST PROCEDURES FOR A5LB OPTION Step Action Send into the HLU the inband ARMING and NIU (Network Interface Unit) LPBK code 11000 for at least 5 seconds, or at least 4 repetitions of the 16-bit ESF Data Link ARMING code 0001 0010 11111111.
  • Page 24 Section 150-231-134 Revision 01 TABLE 9. TEST PROCEDURES FOR A5LB OPTION (CONTINUED) Step Action Using the following codes, a NETWORK tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 4. A CUSTOMER tester can activate loopbacks CLOC or CREM.
  • Page 25 Issue 1, Section 150-231-134 Revision 01 TABLE 10. HLU 4-CHARACTER FRONT PANEL MESSAGES Message Full Name Description CREM Customer Remote Loopback Signal from customer is looped back to customer at HLU- 231. NLOC Network Local Loopback DSX signal is looped back to DSX at HLU. CLOC Customer Local Loopback Signal from Customer is looped back to customer at...
  • Page 26 Section 150-231-134 Revision 01 TABLE 10. HLU 4 CHARACTER FRONT PANEL MESSAGES (CONTINUED) Message Full Name Description 1=xx or 2=yy HDSL Loop Margins Indicates the power of the received HDSL signal on each Loop relative to noise. Any value of ‘06’ or greater is adequate for reliable system operation.
  • Page 27 Issue 1, Section 150-231-134 Revision 01 TABLE 11 HLU-231 STATUS MENU DEFINITIONS Message Full Name Description ALARMS NONE No Alarms LLOS Local Loss of Signal No signal from local T1 interface. RLOS Remote Loss of No signal from remote T1 interface. Signal Minor Alrm A Minor Alarm condition is in effect.
  • Page 28 Section 150-231-134 Revision 01 TABLE 12. GLOSSARY OF HIGAIN TERMS Term Definition MARGINS Indicates the excess signal to noise ratio, at either the HLU or HRU, relative to a 10 Error Rate. 1st value is current margin, 2nd value is minimum margin since (C)leared last, 3rd value is maximum value since cleared, and NA means Not Available.

  • Page 29: Description Of Maintenance Screens

    Issue 1, Section 150-231-134 Revision 01 13. DESCRIPTION OF MAINTENANCE SCREENS having software versions 6.4 and above, and all List 6, List 7 HRU units can also be set to the same time and 13.01 Figure 6 is the main menu of the Maintenance date as the HLU by entering a “U”...
  • Page 30 Section 150-231-134 Revision 01 errors. All of the counters can be set to zero by 13.06 Figures 15 thru 26 show the Performance Data screens for both doubler and non selecting the (C)lear option from the HLU Status doubler applications. Both the Errored and Screen shown in Figure 8.
  • Page 31 Issue 1, Section 150-231-134 Revision 01 Figure 7. HLU Status Display (No Doublers). Figure 8. HLU Status Display, Span 1 (1 or 2 Doublers). Page 31...
  • Page 32 Section 150-231-134 Revision 01 Figure 9. HLU Status Display, Span 2 (1 Doubler). Figure 10. HLU Status Display, Span 2 (2 Doublers). Page 32...
  • Page 33 Issue 1, Section 150-231-134 Revision 01 Figure 11. HLU Status Display, Span 3 (2 Doublers). Figure 12. Set Clock Menu. Page 33...
  • Page 34 Section 150-231-134 Revision 01 Figure 13. System Settings Menu. Figure 14. Loopback Menu (No Doublers). Page 34...
  • Page 35 Issue 1, Section 150-231-134 Revision 01 Figure 15. Loopback Menu (1 Doubler). Figure 16. Loopback Menu (2 Doublers). Page 35...
  • Page 36 Section 150-231-134 Revision 01 Figure 17. Performance Data (No Doublers). Figure 18. Performance Data, Span 1 (1 or 2 Doublers). Page 36...
  • Page 37 Issue 1, Section 150-231-134 Revision 01 Figure 19. Performance Data, Span 2 (1 Doubler). Figure 20. Performance Data, Span 2 (2 Doublers). Page 37...
  • Page 38 Section 150-231-134 Revision 01 Figure 21. Performance Data, Span 3 (2 Doublers). Figure 22. Performance Data History (No Doublers). Page 38...
  • Page 39 Issue 1, Section 150-231-134 Revision 01 Figure 23. Performance Data History, Span 2 (2 Doublers). Figure 24. Performance Data History, Span 2 (1 Doubler). Page 39...
  • Page 40 Section 150-231-134 Revision 01 Figure 25. Performance Data History, Span 2 (2 Doublers). Figure 26. Performance Data History, Span 3 (2 Doublers). Page 40...
  • Page 41 Issue 1, Section 150-231-134 Revision 01 Figure 27. HLU Alarm History (No Doublers). Figure 28. HLU Alarm History, Span 1 (1 or 2 Doublers). Page 41...
  • Page 42 Section 150-231-134 Revision 01 Figure 29. HLU Alarm History, Span 2 (1 or 2 Doublers). Figure 30. HLU Alarm History, Span 3 (2 Doublers). Page 42...

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