Corporate Office
14402 Franklin AvenueTustin, CA 92780
Tel:
(714) 832-9922
Fax:
(714) 832-9924
For Technical Assistance:
(800) 638-0031
Page 1: ...ING SERVICES TECHNICAL PRACTICE 150 451 142 03G SECTION 150 451 142 04 Model List Number Part Number CLEI Code HDU 451 4B 150 1143 42 T1R5A5HEAA L ISS 1 RS 232 1 2 1 2 V TELEPHONE CO PROPERTY PairGain...
Page 2: ...nologies 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 ident...
Page 3: ...types of messages identified by icons appear in the text See Abbreviations on page 32 for a list of abbreviations used throughout this technical practice Notes contain information about special circu...
Page 4: ...Using This Manual 150 451 142 04 Revision 04 iv October 8 1998 HDU 451 List 4B...
Page 5: ...10 Installation ____________________________________________ 11 Inspecting Your Shipment 11 Installing the HDU 451 List 4B 11 Troubleshooting 12 Isolating a Problem 12 Solutions to Common Problems 13...
Page 6: ...ifications __________________________________30 Pinouts_________________________________________________31 Abbreviations ___________________________________________32 Product Support__________________...
Page 7: ...gure 4 HiGain Loopbacks 10 Figure 5 Doubler Log On Screen 18 Figure 6 HDU 451 Main Menu 19 Figure 7 Span 1 Status screen 21 Figure 8 System Settings Screen 24 Figure 9 Performance Data Span 1 1 or 2 D...
Page 8: ...e HRE 423 and HRE 450 Enclosures 6 Table 3 Deployment Rules for the HRE 454 Enclosure 7 Table 4 The Features of the HDU 451 Front Panel 9 Table 5 HLU 451 Status Menu Messages 14 Table 6 Terminal Navig...
Page 9: ...ics shelf or in equivalent enclosures manufactured by PairGain Technologies All HiGain modules comply with the applicable requirements of TR TSY 000063 Network Equipment Building System NEBS Generic E...
Page 10: ...esence of this new circuit causes the HDSL span powering voltage levels to be shifted up to 100 volts more positive than what they are in non List B doubler circuits The actual shift depends on loop l...
Page 11: ...arrangement usually results in the highest operating loop margins Use Table 1 when calculating the electrical length of each span If it is not possible to make all spans equal then choose the span le...
Page 12: ...locally powered HRU 412 List 7 or List 8 unit The maximum power dissipation of the HDU 451 is 6 watts OUTSIDE ENCLOSURE DEPLOYMENT RULES Take care when deploying the HDU 451 in sealed multislot outsid...
Page 13: ...e 2 and Table 3 that exceed 115 F meet the requirements of Section 10 2 1 3 of TA NWT 001210 This Section requires that HDSL equipment deployed in outside enclosures shall operate in a temperature amb...
Page 14: ...per TR TSY 000057 None Inside underground or fully shaded Max Ambient Temp HRE 423 Vertical 1 2 3 Full 120 F Vertical 1 2 3 None 130 F Vertical 1 2 Full 130 F Vertical 1 2 None 140 F Vertical 2 Full 1...
Page 15: ...ound or fully shaded Max Ambient Temp Vertical 1 2 3 4 Full 115 F Vertical 1 2 3 4 None 125 F Vertical 1 2 4 Full 125 F Vertical 1 2 4 None 135 F Vertical 2 4 Full 135 F Vertical 2 4 None 145 F Vertic...
Page 16: ...escription 150 451 142 04 Revision 04 8 October 8 1998 HDU 451 List 4B FRONT PANEL Figure 3 shows the front panel of the HDU 451 List 4B and Table 4 describes its features Figure 3 The HDU 451 List 4B...
Page 17: ...nput line pairs HDSL IN 1 and HDSL IN 2 These indicators have the following states Flashing Green indicates synchronization is being attempted with the HLU Green indicates HDSL frame synchronization b...
Page 18: ...opbacks can be initiated from the HLU maintenance port the HLU front panel push button and from a family of Special Loopback SPLP in band loopback commands Figure 4 lists the Generic SPLP in band loop...
Page 19: ...ur slot outdoor above or below ground HRE 450 single slot outdoor above ground HRE 420 single slot indoor HRE 422 two slot single width indoor The HDU 451 also mounts in any industry standard 400 type...
Page 20: ...solving a problem Table 5 on page 14 shows the messages that can appear on the line unit front panel display Isolating a Problem The front panel HDSL IN loop 1 and loop 2 LEDs identify the cable pair...
Page 21: ...r site is installed and operational in the central office All HRU 412 Remote Units except List 8 have an HDSL input signature resistance of 180 kOhms between the Tip and Ring on each loop The HDSL inp...
Page 22: ...Alarm condition is in effect LOSW Loss of Sync Word One of the HDSL loops has lost synchronization H1ES HDSL Loop 1 Errored Second Loop 1 s CRC has exceeded the user selected Errored Seconds threshold...
Page 23: ...ler 1 Loopback Loopback at Doubler 1 towards network initiated from CO network by a family of special loopbacks SPLP or from maintenance terminal or by depressing both the MODE and SEL HLU front panel...
Page 24: ...Customer Doubler 1 Loopback Loopback a Doubler 1 towards CI initiated from CPE customer by a family of special loopbacks SPLP or from maintenance terminal or by depressing both the MODE and SEL HLU fr...
Page 25: ...ata bits 1 stop bit Hardware Flow Control set to None VT Terminal Emulation LOGGING ON AND USING THE TERMINAL MENUS When you log on to the terminal menus the terminal is actually logged on to the HLU...
Page 26: ...rminal Main Menu NAVIGATING THE TERMINAL MENUS Table 6 lists the keys you can use on the dumb terminal keyboard to navigate through the terminal menus and screens Not all keys function on all the menu...
Page 27: ...Navigational Keys Key Function Logs onto the Remote Terminal menus Exits the current menu Updates a report Displays the next Span Status screen Displays the previous page of a report Displays the nex...
Page 28: ...ystem Settings Displays all system settings View System Settings on page 23 E View Performance Data Provides access to screens displaying the Errored Seconds ES and Unavailable Seconds UAS for each sp...
Page 29: ...s screen displays Figure 7 Span 1 Status screen SPAN 1 STATUS HLU ver1 6 006D HDU1 ver2 5 0004 TIME 00 30 50 DATE 01 07 97 CIRCUIT ID P ALARMS NONE LOOPBACK OFF HDSL 1 HDSL 2 HDSL 1 HDSL 2 cur min max...
Page 30: ...e BER of 10 7 the first value is the current margin the second is the minimum margin since last cleared the third is the maximum margin since last cleared Pulse ATTN Indicates the attenuation of the 2...
Page 31: ...ount The number of seconds during which the DS1 input signal was absent 125 or more consecutive 0s Frame Type Type of DS1 framing used on the input stream SF ESF Unframed or No Activity Code Type Type...
Page 32: ...settings of either ENA or DIS for SmartJack loopback where signal from DS1 is looped back at the HRU to the DSX 1 Special LBPK Indicates the special loopback settings of either Generic loopback GNLB w...
Page 33: ...her 20 60 or 120 minutes after initiation Alarm Indicates whether alarms are enabled or DIS DS1 Code Indicates one of three settings Auto B8ZS or AMI Framing Indicates whether framing is either Auto o...
Page 34: ...000 000 000 000 23 15 000 000 000 000 000 000 000 000 000 000 000 000 23 30 000 000 000 000 000 000 000 000 000 000 000 000 23 45 000 000 000 000 000 000 000 000 000 000 000 000 00 00 000 000 000 000...
Page 35: ...SECONDS DS1 HDSL 1 HDSL 2 HLU HRU HLU HDU1 HLU HDU1 05 03 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 05 04 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 0000...
Page 36: ...able span Table 10 describes the fields of the Alarm History screen ALARM HISTORY TIME 02 57 36 DATE 05 10 05 CIRCUIT ID P Type First Last Current Count LOS DS1 HLU 05 10 05 00 00 05 10 05 02 41 ALARM...
Page 37: ...ition number of alarms Span1 LOSW HDSL2 First and last instance of LOSW on HDSL2 Current condition number of alarms Span1 ES HDSL1 First and last instance of ES on HDSL1 Current condition number of al...
Page 38: ...tartup Time 15 seconds typical 30 seconds maximum Power Consumption 6 watts maximum Electrical Protection Secondary surge and power cross protection on all HDSL ports Operating Temperature and Humidit...
Page 39: ...1 PINOUTS The figures in this section show the pinouts for the HDU 451 List 4B Figure 12 on page 31 shows the pinouts for the HDU 451 connector Figure 13 on page 32 shows the pinouts for the HDU 451 C...
Page 40: ...8 HDU 451 List 4B Figure 13 HDU 451 DB 9 Pin Outs ABBREVIATIONS 2B1Q 2Binary1Quaternary AIS Alarm Indication Signal ALM Alarm ALMP Alarm Pattern Option AMI Alternate Mark Inversion AWG American Wire G...
Page 41: ...E Customer Premises Equipment CRC Cyclic Redundancy Check CSA Carrier Service Area CSU Channel Service Unit dB Decibel DCE Data Circuit Terminating Equipment DIS Disable DL Data Link DLC Data Link Con...
Page 42: ...Crystal Display LED Light Emitting Diode LOS Loss of Signal LOSW Loss of Sync Word LPWR Local Power LVL Level NEBS Network Equipment Building System NET Network NI Network Interface NID Network Interf...
Page 43: ...ek by contacting PairGain Customer Service Engineering group at SCURR Sealing Current SF Super Frame S N Signal to Noise SPLB Special Loopback TEC Total Error Count TLOS LB Transmit Loss of Signal Loo...
Page 44: ...PairGain Technologies warrants this product to be free of defects and to be fully functional for a period of 60 months from the date of original shipment given correct customer installation and regul...
Page 45: ...rea is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Refer to the installation section of the appropriate instruction manu...
Page 46: ...Corporate Office 14402 Franklin Avenue Tustin CA 92780 Tel 714 832 9922 Fax 714 832 9924 For Technical Assistance 800 638 0031...
