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PairGain HIGAIN HLU-231 Manual

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H
G
L
U
I
AIN
INE
NIT
Model
List Number
Part Number
CLEI Code
HLU-231
7B
150-1111-72
T1L2FKHAAA
P
G
T
, I
.
AIR
AIN
ECHNOLOGIES
NC
E
S
T
P
NGINEERING
ERVICES
ECHNICAL
RACTICE
S
150-231-172
ECTION
Revision History of this practice.
Revision 02—January 31, 1997
A) Added CLEI Code

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Summary of Contents for PairGain HIGAIN HLU-231

  • Page 1 Model List Number Part Number CLEI Code HLU-231 150-1111-72 T1L2FKHAAA ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE 150-231-172 ECTION Revision History of this practice. Revision 02—January 31, 1997 A) Added CLEI Code...

  • Page 2: Table Of Contents

    A caution warns you of possible damage to equipment. A warning indicates the possibility of personal injury. ©Copyright 1997 PairGain Technologies, Inc. PairGain is a registered trademark, and HiGain is a trademark of PairGain Technologies, Inc. Page ii PairGain Engineering - Plant Series...

  • Page 3: General

    Bellcore TA-TSY-001210. The HiGain system complies with TR- TSY-000063 (Network Equipment Building System (NEBS) Generic Equipment requirements) and TR-TSY-000499 (Transport System Generic Requirements - TSGR) common requirements. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 1...
  • Page 4 Circuit ID option • Single board design • New 200V PWRF option • HDSL Unipolar (0, -200V), Bipolar (±100V) switch • Can line power 3 spans (2 doublers and 1 remote) Page 2 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 5 HiGain system, service can be provided within hours. Fiber optic systems can be installed at a leisurely pace and cut-over from the installed HiGain system when convenient to do so. The installed HiGain system can then be easily removed and utilized elsewhere. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 3...

  • Page 6: Functional Operation

    HRU-412 HiGain Remote Unit. This provides a total capacity of 1.568 Mbps between the two units. A block diagram of the HLU-231 List 7B is shown in Figure 2. The HiGain HLU-231 List 7B receives a 1.544 Mbps DS1 data stream from the DSX-1 digital cross connect interface. The HLU- 231 List 7B contains a DS1 frame synchronizer controlled by an 8-bit microprocessor that determines the type of framing on the DS1 stream and synchronizes to it.

  • Page 7: Applications

    Doubler applications. Table 10 defines the various terms used in the non-Doubler System Status Screen, and Table 21 defines the same terms for the Doubler System Status Screens. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 5...
  • Page 8 January 31, 1997 Revision 02 Figure 2. HLU-231, List 7B 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. Figure 3. DB-9 RS-232 I/O Pin-Outs. A standard RS-232 (DB-9, female) connector on the front panel provides access to the menu interface feature via a dumb terminal.

  • Page 9: Alarms

    The STATUS LED still flashes red and the “ALRM” message is still displayed. Whenever the on-board fuse opens, Pin 32 (FUSEALARM) is driven to -48 V through a 1000 ohm resistor and the front panel STATUS LED turns red. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 7...
  • Page 10 Self Test in process or an HLU-231 List 7B loopback in effect (CREM) or (NLOC) FLASHING YELLOW The HLU-231 List 7B is in an ARMED state. Figure 4. HLU-231, Card-Edge Connectors. The active pins are highlighted in black. Page 8 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 11: Options

    HiGain are different in each of the two DS1 directions, the HiGain DS1 output codes will not match their respective DS1 input codes at the other end. This could cause the HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 9...
  • Page 12 Tells the HiGain system that the ESF frame is operating in its Zero Byte Time Slot Interface (ZBTSI) mode. OFF* Tells the HiGain system that the ESF frame is operating in its normal non-ZBTSI mode. Table continued on next page Page 10 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 13 Configures the HiGain system to operate in an unframed mode. This mode disables the auto framing process and forces the HiGain system to function as a transparent bit pipe. Table continued on next page HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 11...
  • Page 14 LED readout only displays the status of the blocking option. BLK indicates at least one channel is blocked. NONE* NONE indicates no channels are blocked. *Indicates HLU-231 List 7B factory default settings. Page 12 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 15 DS1 transceiver chip in the self test procedure. This process can cause the AIS pattern, that is normally transmitted from the HLU-231 List 7B during these out of sync intervals, to exhibit occasional BPVs. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 13...
  • Page 16 SAIS & DS0 blocking, are not available in older versions of the HRU-412, List 1, 2, 3, 3A and 4, that do not support these newer options. 5.15 The PairGain HCS-417 & 418 shelves and some 220-configuration shelves deployed in remote cabinets do not have external equalizers. Therefore, the EXT EQL option may not be used in these applications.

  • Page 17: Hdsl Line Voltage Option

    2, and is independent of S2’s setting. 7. NETWORK MANAGEMENT The HLU-231, List 7B has a Network Management Control Bus available on pin 46. This allows the 7B to be managed by various PairGain Management System protocols through the HMU-319 common control card. 8. INSTALLATION Upon receipt of the equipment, visually inspect it for signs of damage.

  • Page 18: Specifications

    5 to 95% (non-condensing) Mounting AT&T 220-configuration or equivalent. Dimensions Height: 5.9 inch (15 cm) Width: 1.4 inch (3.5 cm) Depth: 10 inch (25.4 cm) Weight 1 lb. 14 oz. Page 16 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 19: Certification

    11. WARRANTY 11.1 PairGain Technologies warrants this product to be free of defects and to be fully functional for a period of sixty (60) months from the date of original shipment, given proper installation. PairGain will repair or replace any unit without cost during this period if the unit is found to be defective for any reason other than abuse, improper use, or installation.

  • Page 20: Applications Without Using Higain Doublers

    The thermal loading limitations imposed when using the HLU-231 List 7B in Controlled Environmental Vault (CEV) or other enclosures are determined by applying the HLU-231 List 7B's power parameters to the manufacturer's requirements for each specific housing. Page 18 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 21: Loopback Operation

    Table 5 through Table 8 list the details of these SPLB functions. A2LB & A5LB are patterned after the Teltrend addressable T1 repeater loopbacks. A3LB & A4LB are patterned after the Wescom addressable T1 repeater loopbacks. All HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 19...
  • Page 22 MANUAL loopback session and returns the display to normal mode. Note that these same loopbacks can be initiated from the RS-232 maintenance port by choosing the Page 20 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 23: Testing

    DSX-1 and the HLU-231 List 7B. If plugs are inserted into both SPAN jacks, the BRG jacks can be used to send and receive test patterns towards the DSX-1. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 21...
  • Page 24 Revision 02 Figure 6. HLU-231 non-Doubler Loopback Configurations. The most important of the HiGain family of loopback options is the Smart-Jack loopback, which emulates the functions of a standard NID. Page 22 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 25 SF or ESF mode. The frame bits override the command bits and cause errors in the command sequence. These errors cause the HiGain system to reject some sequences. This can extend the detection interval. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 23...
  • Page 26 List 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. TABLE CONTINUED ON NEXT PAGE Page 24 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 27 Query, c) Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section B Paragraph 3.09). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 25...
  • Page 28 List 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. TABLE CONTINUED ON NEXT PAGE Page 26 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 29 Query, c) Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section B Paragraph 3.09). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 27...
  • Page 30 Bit Error Ratio (BER) on the facility. This is the HEX number for the 4-bit group. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section B Paragraph 3.09). Page 28 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 31 Bit Error Ratio (BER) on the facility. This is the HEX number for the 4-bit group. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section B Paragraph 3.09). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 29...
  • Page 32 List 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. TABLE CONTINUED ON NEXT PAGE Page 30 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 33 Query, c) Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU with the MODE and SEL pushbuttons (Section B Paragraph 3.09). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 31...
  • Page 34 CO (network) by Intelligent Line Repeater (ILR) #2 code, HLU-231 front panel MANUAL LOOPBACK push-buttons, HRU-412 front panel push-button, or maintenance terminal (Figure 6). TABLE CONTINUED ON NEXT PAGE Page 32 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 35: System Maintenance Menu Screens

    P (Previous) or N (Next) respectively. All of the counters can be set to zero by pressing C (Clear) from the HLU-231 List 7B SPAN STATUS Screen shown in HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 33...
  • Page 36 It, like the system settings, is stored in NVRAM and thus remains when power is lost. Note that the Circuit ID # is not available at the HRU-412 Maintenance Port. A glossary of HiGain Terms is shown in Table 10. Page 34 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 37 “w.x” = software version number of the HLU-231 List 7B. “y” = list # of HLU-231 List 7B. HRU/Ver a.b-c “a.b” = software version number of the HRU-412. “c” = list # of HRU-412. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 35...
  • Page 38 Indicates a short between the 2 HDSL pairs. This same message can occur with an HRU that is drawing the correct amount of power over good cable pairs but cannot communicate with the HLU. TABLE CONTINUED ON NEXT PAGE Page 36 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 39 BLK indicates some channels are blocked. MAL1(2) Margin Alarm Loop 1 or 2 The margin on HDSL loop 1 (2) has dropped below the threshold (1 to 15 dB) set by the user. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 37...
  • Page 40 Section 150-231-172 January 31, 1997 Revision 02 Figure 7. HLU-231 List 7B Main Menu. Figure 8. HLU-231 List 7B non-Doubler Status. Page 38 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 41 Revision 02 January 31, 1997 Section 150-231-172 Figure 9. Set Clock Menu. Figure 10. HLU-231 List 7B System Settings Main Menu. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 39...
  • Page 42 Section 150-231-172 January 31, 1997 Revision 02 Figure 11. HLU-231 List 7B non-Doubler Loopback Menu. Figure 12. HLU-231 List 7B non-Doubler Performance Data. Page 40 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 43 Revision 02 January 31, 1997 Section 150-231-172 Figure 13. HLU-231 List 7B non-Doubler Performance Data History. Figure 14. HLU-231 List 7B non-Doubler Alarm History. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 41...

  • Page 44: Applications Using Higain Doublers

    CO is subjected to the maximum power density. More favorable conditions would permit increasing the number of shelves per bay without jeopardizing the CO thermal integrity. Page 42 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 45 It thus limits the maximum number of plugs per remote enclosure. Use this data to perform this analysis on a case by case basis. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 43...
  • Page 46 SXSS (CO) (J98725CA) Original 220 Bays 3.43 (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 Page 44 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

  • Page 47: Loopback Operation

    AIS code, or to unblock it by executing the FAR-END ACTIVATE code. Since A5LB never blocks the arming code from exiting the HLU-231 List 7B, it does not need HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 45...
  • Page 48 The HLU-231 List 7B and the HRU-412. The most complex HiGain system application includes the HLU-231 List 7B, HRU-412 & two in-line HDU-451 Doublers. Refer to the PairGain HiGain Intelligent Repeater Application Note # 910, Part # 325- 910-100, for more SPLB details.

  • Page 49: Testing

    EXT for driving external equalizers. See Table 2 for the equalization settings for internal equalization. All installations should be set to the largest value that does not exceed the distance from the DSX-1 to the shelf. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 47...
  • Page 50 DSX-1. Figure 15. HLU-231 Doubler Loopback Configurations. The most important of the HiGain family of loopback options is the Smart-Jack loopback, which emulates the functions of a standard NID. Page 48 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 51 SF or ESF mode. The frame bits override the command bits and cause errors in the command sequence. These errors cause the HiGain system to reject some sequences. This can extend the detection interval. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 49...
  • Page 52 Upon completion, the tester sends IOR LPDN code 1001 0011 1001 0011 to loop-down the HLU-231 List 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. Table continued on next page Page 50 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 53 Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section C Paragraph 3.10). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 51...
  • Page 54 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. Table continued on next page Page 52 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 55 Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section C Paragraph 3.10). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 53...
  • Page 56 All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push- buttons (Section C Paragraph 3.10). Page 54 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 57 Bit Error Ratio (BER) on the facility). This is the HEX number for the 4-bit group. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section C Paragraph 3.10 HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 55...
  • Page 58 7B. The unit remains armed however, as indicated by the ARM message on the HLU-231 List 7B and the flashing of the HRU-412 LOOPBACK LED. Table continued on next page Page 56 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 59 Alternate query, d) Far end activate, and e) Another ARM command. All of the above loopbacks can also be initiated from the front panel of the HLU-231 List 7B with the MODE and SEL push-buttons (Section C Paragraph 3.10). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 57...

  • Page 60: System Maintenance Menu Screens

    “0” by pressing C (Clear) from the HLU-231 List 7B SPAN STATUS Screen shown in Figure 17 through Figure 20. Note that since the HLU-231 List 7B is considered the master module, this clears Page 58 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 61 The SPAN 3 Screen refers to the loops between the second Doubler and the HRU-412 for two-Doubler circuits. Table 21 shows a glossary of HiGain terms and Table 22 shows a list of HLU-231, List 7B, 4- Character Front Panel Messages. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 59...
  • Page 62 Loopback at HLU-231 List 7B (local) towards network initiated from C0 by IOR code, HLU-231 front panel MANUAL LOOPBACK push-buttons or maintenance terminal (Figure 15). Table continued on next page Page 60 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 63 Transmit Loss of Signal Loopback HRU-412 is in a logic loopback state caused by a loss of its T1 input from the CI, if enabled at the HRU-412 via its TLOS switch option. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 61...
  • Page 64 “s.t.” = the software version number of the HD-451 #1. “u” = List number of the HD- 451 #1. HDU2/Ver f.g-h “f.g.” = the software version number of the HD-451 #2. “h” = List number of the HD- 451 #2. Page 62 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 65 Alarm CutOff A minor alarm has occurred, and been retired to an ACO condition, by pressing the SEL button on the HLU front panel. Table continued on next page HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 63...
  • Page 66 BLK indicates some channels are blocked. MAL1(2) Margin Alarm Loop 1 or 2 The margin on HDSL loop 1 (2) has dropped below the threshold (1 to 15 dB) set by the user. Page 64 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 67 Revision 02 January 31, 1997 Section 150-231-172 Figure 16. HLU-231 List 7B Main Menu. Figure 17. HLU-231 List 7B Status Display - Span 1 (1 or 2 Doublers). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 65...
  • Page 68 January 31, 1997 Revision 02 Figure 18. HLU-231 List 7B Status Display - Span 2 (1 Doubler). Figure 19. HLU-231 List 7B Status Display - Span 2 (2 Doublers). Page 66 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 69 Revision 02 January 31, 1997 Section 150-231-172 Figure 20. HLU-231 List 7B Status Display - Span 3 (2 Doublers). Figure 21. HLU-231 List 7B Set Clock Menu. HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 67...
  • Page 70 Section 150-231-172 January 31, 1997 Revision 02 Figure 22. HLU-231 List 7B Systems Settings Menu. Figure 23. HLU-231 List 7B Doubler Loopback Menu. Page 68 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 71 January 31, 1997 Section 150-231-172 Figure 24. HLU-231 List 7B Performance Data - Span 1 (1 or 2 Doublers). Figure 25. HLU-231 List 7B Performance Data - Span 2 (1 Doubler). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 69...
  • Page 72 January 31, 1997 Revision 02 Figure 26. HLU-231 List 7B Performance Data - Span 2 (2 Doublers). Figure 27. HLU-231 List 7B Performance Data - Span 3 (2 Doublers). Page 70 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 73 Section 150-231-172 Figure 28. HLU-231 List 7B Performance Data History - Span 1 (1 or 2 Doublers). Figure 29. HLU-231 List 7B Performance Data History - Span 2 (1 Doubler). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 71...
  • Page 74 January 31, 1997 Revision 02 Figure 30. HLU-231 List 7B Performance Data History - Span 2 (2 Doublers). Figure 31. HLU-231 List 7B Performance Data History - Span 3 (2 Doublers). Page 72 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...
  • Page 75 Section 150-231-172 Figure 32. HLU-231 List 7B Alarm History - Span 1 (1 or 2 Doublers). Figure 33. HLU-231 List 7B Alarm History - Span 2 (1 or 2 Doublers). HiGain Line Unit HLU-231 PairGain Engineering - Plant Series Page 73...
  • Page 76 Section 150-231-172 January 31, 1997 Revision 02 Figure 34. HLU-231 List 7B Alarm History - Span 3 (2 Doublers). Page 74 PairGain Engineering - Plant Series HiGain Line Unit HLU-231...

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