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PairGain PLANT Series Manual

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PAIRGAIN TECHNOLOGIES
Technical Practice
Engineering - PLANT Series
P
AIR
List 6D, PairGain #150-1111-64, CLEI Code: T1LIE144AA
CONTENTS
B. APPLICATIONS WITHOUT HIGAIN
C. APPLICATION WITH HIGAIN DOUBLER
HDU-451
Copyright © 1995, PairGain Technologies, Inc. PairGain and HiGain are trademarks of PairGain Technologies.
04
G
T
™
AIN
ECHNOLOGIES
MODEL HLU-231 Issue 1
H
G
I
PAGE
2
2
2
2
4
5
9
10
10
10
11
11
11
11
13
24
Figure 1. HLU-231, List 6D 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.
32
32
32
33
This product incorporates static sensitive components.
Proper electrostatic discharge procedures must be
36
46
Section 150-231-164
L
U
™
AIN
INE
NIT
CAUTION
followed.
Revision 04
March 30, 1995
Page 1

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Summary of Contents for PairGain PLANT Series

  • Page 1: Table Of Contents

    CAUTION 3. LOOPBACK OPERATION This product incorporates static sensitive components. Proper electrostatic discharge procedures must be 4. TESTING followed. 5. SYSTEM MAINTENANCE MENU SCREENS Copyright © 1995, PairGain Technologies, Inc. PairGain and HiGain are trademarks of PairGain Technologies. Page 1...

  • Page 2: General

    1. INTRODUCTION easy to deploy method for delivering T1 High 1.01 The PairGain HiGain Line Unit Model HLU-231 Capacity Digital Service (HCDS) over metallic pairs. Issue 1, List 6D (Figure 1), is the Central Office The fiber-like quality service is deployed over two (CO) side of a repeater-less T1 transmission system.
  • Page 3 0-655 feet of ABAM-specification cable. each channel, the multiplexer can reconstruct the Figure 2. HLU-231, List 6D 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 4: Alarms

    Section 150-231-164 Revision 04 3.08 The HLU-231 List 6D contains two separate power converters. The main power supply converts -48 VDC local battery to logic power for the HLU-231 List 6D circuits. The line power supply converts the -48 VDC battery to a variable -130 VDC to - 210 VDC that provides simplex power feed on the two HDSL line interfaces.

  • Page 5: Options

    Issue 1, Section 150-231-164 Revision 04 • ALRM RLOS: Loss of HRU-412 DS1 input GREEN - Normal Operation. signal. • FLASHING GREEN - HDSL Acquisition. ALRM TLOS: The DS1 input to a List 6 or 7 • FLASHING RED - Minor Alarm (For HRU-412, whose TLOS switch option has conditions see Paragraph 4.02).
  • Page 6 Section 150-231-164 Revision 04 TABLE 1. HLU-231 LIST 6D SYSTEM OPTIONS Mode Selection Description EXT* Replaces the internal equalizer with a 12 V drive source for an external equalizer. pk-pk Sets the Equalizer to DSX-1 for 0-133 feet. Sets the Equalizer to DSX-1 for 133-266 feet. Sets the Equalizer to DSX-1 for 266-399 feet.
  • Page 7 Issue 1, Section 150-231-164 Revision 04 TABLE 1. HLU-231 LIST 6D SYSTEM OPTIONS (CONTINUED) Mode Selection Description DIS* Opens the minor alarm relay contacts if closed, and disables activation of the minor alarm relay when a minor alarm condition occurs. Enables activation of the minor alarm relay when a minor alarm condition occurs.
  • Page 8 Section 150-231-164 Revision 04 TABLE 1. HLU-231 LIST 6D SYSTEM OPTIONS (CONTINUED) Mode Selection Description The DS0 blocking option can only be set via the RS-232 maintenance port with a terminal (Figure 9 (non-Doubler) and Figure 21 (Doubler)). The 4-Character HLU-231 List 6D front panel LED readout only displays the status of the blocking option.

  • Page 9: Installation

    5.11 The new T1 transceiver chip in the List 6D 5.15 The PairGain HCS-417 & 418 shelves and some 220-configuration shelves deployed in remote allows the unit to process both B8ZS and AMI code inputs, regardless of the DS1 code setting (AMI or cabinets do not have external equalizers.

  • Page 10: Specifications

    Doubler). representative voids the warranty. Fusing 9.03 If a unit needs repair, call PairGain for a Return Internal; connected to “FUSE-ALARM” output on pin Material Authorization (RMA) number and return the defective unit, freight prepaid, along with a brief HDSL Span Voltage description of the problem, to: -130 to -210 VDC.

  • Page 11: Doubler Hdu-451

    Issue 1, Section 150-231-164 Revision 04 B. APPLICATIONS WITHOUT USING HIGAIN shelves to 8 per bay. Note that this is a worst case DOUBLER HDU-451 situation in that it assumes the entire Central Office is subjected to the maximum power density. Conditions other than these worst case ones would permit 1.
  • Page 12 Section 150-231-164 Revision 04 towards the customer. Either loop-up condition is 3.07 When T1 loopback tests are performed on the terminated (looped-down) with the 3 in 5 loop-down HiGain system with metallic loopback code. Both in-band codes must be present for 5 connections at either end, the DS1 code that exists at the metallic loopback interface may be different from the seconds before the HiGain system responds.

  • Page 13: Testing

    Issue 1, Section 150-231-164 Revision 04 LBTO setting. Only one loopback can exist at any given for five minutes if neither the MODE or SEL buttons are time. Pressing both push-buttons, again for three pressed. The use of either button activates the 4- seconds, terminates any active loopback, ends the character display and restarts the 5-minute power- control timer.
  • Page 14 Section 150-231-164 Revision 04 TABLE 2. HLU-231 GNLB TEST PROCEDURES Step Action Have the CO tester send the HRU-412 (3 in 7) in-band loop-up code for five seconds. Observe that the HLU-231 List 6D displays the “NREM” message indicating an HRU loopback is in effect (Figure Have the CO tester transmit a T1 test signal into the HLU-231 List 6D and verify that the returned (looped) signal is error free.
  • Page 15 Issue 1, Section 150-231-164 Revision 04 TABLE 3. HLU-231 A1LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48).
  • Page 16 Section 150-231-164 Revision 04 TABLE 3. 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 5. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 1 (A1LB) REPEATER LOOPBACK COMMANDS ARMING or NI LPBK (in-band) Arming code...
  • Page 17 Issue 1, Section 150-231-164 Revision 04 TABLE 4. HLU-231 A2LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48).
  • Page 18 Section 150-231-164 Revision 04 TABLE 4. HLU-231 A2LB TEST PROCEDURES (CONTINUED) Step Action Using the following codes, a network tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 5. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 2 (A2LB) REPEATER LOOPBACK COMMANDS ARMING or NI LPBK (in-band) Arming code...
  • Page 19 Issue 1, Section 150-231-164 Revision 04 TABLE 5. HLU-231 A3LB TEST PROCEDURES Step Action The HiGain Line Unit can be looped back (NLOC in Figure 5) by sending the Addressable Office Repeater (AOR) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least five seconds.
  • Page 20 Section 150-231-164 Revision 04 TABLE 6. HLU-231 A4LB TEST PROCEDURES Step Action The HiGain Line Unit can be looped back (NLOC in Figure 5) by sending the Addressable Office Repeater (AOR) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least five seconds.
  • Page 21 Issue 1, Section 150-231-164 Revision 04 TABLE 7. HLU-231 A5LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI (Network Interface) LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48).
  • Page 22 Section 150-231-164 Revision 04 TABLE 7. HLU-231 A5LB TEST PROCEDURES (CONTINUED) Step Action Using the following codes, a network tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 5. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 5 (A5LB) REPEATER LOOPBACK S ARMING or NI LPBK (in-band) Arming code...
  • Page 23 Issue 1, Section 150-231-164 Revision 04 TABLE 8. HLU-231 LIST 6D STATUS MENU MESSAGES Message Full Name Description ALARMS : NONE No Alarms LLOS Local Loss of Signal No signal from HLU-231 List 6D local T1 interface. RLOS Remote Loss of Signal No signal from HRU-412 remote T1 interface.

  • Page 24: System Maintenance Menu Screens

    Section 150-231-164 Revision 04 5. SYSTEM MAINTENANCE MENU SCREENS 5.06 Figure 12 shows the 7-DAY PERFORMANCE HISTORY Screen. The “Errored Seconds” and 5.01 Figure 6 is the Maintenance Terminal MAIN “Unavailable Seconds” for both HDSL loops and each of MENU Screen. Its eight sub-menus provide the two DS1 inputs are listed for the current and many useful provisioning, test and monitoring tools.
  • Page 25 Issue 1, Section 150-231-164 Revision 04 TABLE 9. GLOSSARY OF HIGAIN TERMS Term Definition MARGINS Indicates the excess signal to noise ratio, at either the HRU-412 or HLU 231 List 6D HDSL ports, relative to a 10 Bit Error Rate. 1st value is current margin, 2nd value is minimum margin since (C)leared last, 3rd value is maximum value since cleared.
  • Page 26 Section 150-231-164 Revision 04 TABLE 10. HLU-231, LIST 6D 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 27 Issue 1, Section 150-231-164 Revision 04 TABLE 10. HLU-231, LIST 6D 4-CHARACTER FRONT PANEL MESSAGES (CONTINUED) Message Full Name Description PWR FEED Power Feed Open Indicates an open circuit in the T&R of either HDSL pair. OPEN PWR FEED OFF Power Feed Off HDSL span power has been turned off by setting the PWFD option to DIS.
  • Page 28 Section 150-231-164 Revision 04 Figure 6. HLU-231 List 6D Main Menu. Figure 7. HLU-231 List 6D non-Doubler Status. Page 28...
  • Page 29 Issue 1, Section 150-231-164 Revision 04 Figure 8. Set Clock Menu. Figure 9. HLU-231 List 6D System Settings Main Menu. Page 29...
  • Page 30 Section 150-231-164 Revision 04 Figure 10. HLU-231 List 6D non-Doubler Loopback Menu. Figure 11. HLU-231 List 6D non-Doubler Performance Data. Page 30...
  • Page 31 Issue 1, Section 150-231-164 Revision 04 Figure 12. HLU-231 List 6D non-Doubler Performance Data History. Figure 13. HLU-231 List 6D non-Doubler Alarm History. Page 31...

  • Page 32: General

    Section 150-231-164 Revision 04 C. APPLICATIONS USING HIGAIN DOUBLER 2.02 The maximum shelf current drain allowed is a HDU-451 function of the shelf -48 VDC fuse. Table 12 lists the doubler shelf deployment guidelines, as a 1. GENERAL function of the shelf fuse, for the more popular Type 220 1.01 For Doubler applications, one or two Doublers configuration shelves.

  • Page 33: Loopback Operation

    (J98725A, B, C, D, E, F) Upgraded 220 Bays (J98725A, B, C, D, E, F) SXSS (80D Cabinet) Kentrox T-Term 220 PairGain HCS-417 2.05 The thermal loading limitations imposed when 3.02 In addition to the Smart-Jack loopback, the using the HLU-231 List 6D in Controlled...
  • Page 34 HLU-231 List 6D, HRU-412 & two in-line described below. It is given a separate identity to allow HDU-451 Doublers. Refer to the PairGain HiGain future T1/E1 enhancements to be added without Intelligent Repeater Application Note # 910, Part # 325- affecting A2LB.
  • Page 35 Issue 1, Section 150-231-164 Revision 04 3.10 Depressing both the MODE and SEL push- presented by pressing the MODE push-button however, buttons on the front panel for at least three the previously executed loopback will remain active until seconds initiates a MANUAL loopback session. This the SEL push-button is pressed and a different loopback is activated.

  • Page 36: Testing

    Section 150-231-164 Revision 04 4. TESTING 4.03 If trouble is encountered on the HLU-231 List 6D DSX-1 interface, verify that the HLU-231 List 6D 4.01 Table 13 through Table 18 provide step-by-step (Table 1) is making a positive connection with the test procedures for the HLU-231 List 6D as a mounting assembly's connector.
  • Page 37 Issue 1, Section 150-231-164 Revision 04 TABLE 13. HLU-231 GNLB TEST PROCEDURES Step Action Have the CO tester send the HRU-412 (3 in 7) in-band loop-up code for five seconds. Observe that the HLU-231 List 6D displays the “NREM” message indicating an HRU-412 loopback is in effect (Figure 14). Have the CO tester transmit a T1 test signal into the HLU-231 List 6D and verify that the returned (looped) signal is error free.
  • Page 38 Section 150-231-164 Revision 04 TABLE 14. HLU-231 A1LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48). (Left bit arrives first) Monitor the output of the HLU-231 List 6D for the return of the pattern.
  • Page 39 Issue 1, Section 150-231-164 Revision 04 TABLE 14. HLU-231 A1LB TEST PROCEDURES (CONTINUED) Step Action Using the following codes, a network tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 14. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 1 (A1LB) REPEATER LOOPBACK COMMANDS ARMING or NI LPBK (in-band) Arming code...
  • Page 40 Section 150-231-164 Revision 04 TABLE 15. HLU-231 A2LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48). (Left bit arrives first) Monitor the output of the HLU-231 List 6D for the return of the pattern.
  • Page 41 Issue 1, Section 150-231-164 Revision 04 TABLE 15. HLU-231 A2LB TEST PROCEDURES (CONTINUED) Step Action Using the following codes, a network tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 14. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 2 (A2LB) REPEATER LOOPBACK COMMANDS ARMING or NI LPBK (in-band) Arming code...
  • Page 42 Section 150-231-164 Revision 04 TABLE 16. HLU-231 A3LB TEST PROCEDURES Step Action The HLU-231 List 6D can be looped back (NLOC in Figure 14) by sending the Addressable Office Repeater (AOR) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least five seconds. This causes the HLU-231 List 6D to enter its NLOC state shown in Figure 14.
  • Page 43 Issue 1, Section 150-231-164 Revision 04 TABLE 17. HLU-231 A4LB TEST PROCEDURES Step Action The HLU-231 List 6D can be looped back (NLOC in Figure 14) by sending the Addressable Office Repeater (AOR) LPBK activation code 1111(F) 1111(F) 0001(1) 1110(E) for at least five seconds. This causes the HLU-231 List 6D to enter its NLOC state shown in Figure 14.
  • Page 44 Section 150-231-164 Revision 04 TABLE 18. HLU-231 A5LB TEST PROCEDURES Step Action Send into the HLU-231 List 6D the in-band ARMING and NI LPBK code 11000 for at least five seconds, or at least four repetitions of the 16-bit ESF Data Link ARMING code 1111 1111 0100 1000 (FF48).
  • Page 45 Issue 1, Section 150-231-164 Revision 04 TABLE 18. HLU-231 A5LB TEST PROCEDURES (CONTINUED) Step Action Using the following codes, a network tester can activate loopbacks NLOC or NREM or SMJK (if enabled) shown in Figure 14. A customer tester can activate loopbacks CLOC or CREM. ADDRESSABLE 5 (A5LB) REPEATER LOOPBACK COMMANDS ARMING or NI LPBK (in-band) Arming code...

  • Page 46: System Maintenance Menu Screens

    Section 150-231-164 Revision 04 5. SYSTEM MAINTENANCE MENU SCREENS 5.07 Figure 23 through Figure 26 show the PERFORMANCE DATA screens for Doubler 5.01 Figure 15 is the Maintenance Terminal MAIN applications. Both the Errored and Unavailable Seconds MENU Screen. Its eight sub-menus provide for both HDSL loops and each T1 input are listed at 15- many useful provisioning, test and monitoring tools.
  • Page 47 Issue 1, Section 150-231-164 Revision 04 5.09 Figure 31 through Figure 33 show the ALARM number of times each alarm occurred. All the data can HISTORY screens for Doubler applications. be cleared by pressing C (Clear). The maximum non- The alarms are defined in Section A Paragraph 4.01. overflowing count is 999.
  • Page 48 Section 150-231-164 Revision 04 TABLE 19. HLU-231 LIST 6D STATUS MENU MESSAGES (CONTINUED) Message Full Name Description LOOPBACKS: SMJK Smart-Jack Loopback Loopback at HRU-412 remote towards network initiated by (2 in 5) in-band loopback code or out-of-band ESF data link code (Figure 14).
  • Page 49 Issue 1, Section 150-231-164 Revision 04 TABLE 20. GLOSSARY OF HIGAIN TERMS Term Definition MARGINS Indicates the excess signal to noise ratio, at the HRU-412, HDU-451, or HLU-231 List 6D HDSL ports, relative to a 10 BER. 1st value is current margin, 2nd value is minimum margin since (C)leared last, 3rd value is maximum value since cleared.
  • Page 50 Section 150-231-164 Revision 04 TABLE 21. HLU-231, LIST 6D 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 51 Issue 1, Section 150-231-164 Revision 04 TABLE 21. HLU-231, LIST 6D 4-CHARACTER FRONT PANEL MESSAGES (CONTINUED) Message Full Name Description SELF TEST The HLU is in a self test mode. This occurs every power ON/OFF cycle. ALRM Alarm Condition Exists A minor alarm condition is in effect.
  • Page 52 Section 150-231-164 Revision 04 Figure 15. HLU-231 List 6D Main Menu. Figure 16. HLU-231 List 6D Status Display - Span 1 (1 or 2 Doublers). Page 52...
  • Page 53 Issue 1, Section 150-231-164 Revision 04 Figure 17. HLU-231 List 6D Status Display - Span 2 (1 Doubler). Figure 18. HLU-231 List 6D Status Display - Span 2 (2 Doublers). Page 53...
  • Page 54 Section 150-231-164 Revision 04 Figure 19. HLU-231 List 6D Status Display - Span 3 (2 Doublers). Figure 20. HLU-231 List 6D Set Clock Menu. Page 54...
  • Page 55 Issue 1, Section 150-231-164 Revision 04 Figure 21. HLU-231 List 6D Systems Settings Menu. Figure 22. HLU-231 List 6D Doubler Loopback Menu. Page 55...
  • Page 56 Section 150-231-164 Revision 04 Figure 23. HLU-231 List 6D Performance Data - Span 1 (1 or 2 Doublers). Figure 24. HLU-231 List 6D Performance Data - Span 2 (1 Doubler). Page 56...
  • Page 57 Issue 1, Section 150-231-164 Revision 04 Figure 25. HLU-231 List 6D Performance Data - Span 2 (2 Doublers). Figure 26. HLU-231 List 6D Performance Data - Span 3 (2 Doublers). Page 57...
  • Page 58 Section 150-231-164 Revision 04 Figure 27. HLU-231 List 6D Performance Data History - Span 1 (1 or 2 Doublers). Figure 28. HLU-231 List 6D Performance Data History - Span 2 (1 Doubler). Page 58...
  • Page 59 Issue 1, Section 150-231-164 Revision 04 Figure 29. HLU-231 List 6D Performance Data History - Span 2 (2 Doublers). Figure 30. HLU-231 List 6D Performance Data History - Span 3 (2 Doublers). Page 59...
  • Page 60 Section 150-231-164 Revision 04 Figure 31. HLU-231 List 6D Alarm History - Span 1 (1 or 2 Doublers). Figure 32. HLU-231 List 6D Alarm History - Span 2 (1 or 2 Doublers). Page 60...
  • Page 61 Issue 1, Section 150-231-164 Revision 04 Figure 33. HLU-231 List 6D Alarm History - Span 3 (2 Doublers). Page 61...

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