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H
G
I
Model
List Number
HDU-451
E
NGINEERING
D
AIN
4B
HiGain DOUBLER
P
G
T
AIR
AIN
S
ERVICES
™150-451-142-03G¨
S
ECTION
OUBLER
Part Number
150-1143-42
HDU 451
UNIT
+
V
-
LOOPBACK
1
HDSL IN
2
1
HDSL OUT
2
RS 232
PairGain
L
ISS 1
TELEPHONE CO PROPERTY
ECHNOLOGIES
T
ECHNICAL
150-451-142-04
U
NIT
CLEI Code
T1R5A5HEAA
, I
.
NC
P
RACTICE
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Summary of Contents for PairGain HiGain HDU-451
- Page 1 OUBLER Model List Number Part Number CLEI Code HDU-451 150-1143-42 T1R5A5HEAA HDU 451 HiGain DOUBLER UNIT LOOPBACK HDSL IN HDSL OUT RS 232 PairGain ISS 1 TELEPHONE CO PROPERTY ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE ™150-451-142-03G¨ 150-451-142-04 ECTION...
- Page 2 ©Copyright 1998 PairGain Technologies, Inc. PairGain and HiGain are registered trademarks of PairGain Technologies, Inc. Information contained in this document is company private to PairGain Technologies, Inc., and shall not be modified, used, copied, reproduced or disclosed in whole or in part without the written consent of PairGain.
- Page 3 150-451-142-04, Revision 04 Using This Manual SING ANUAL Two types of messages, identified by icons, appear in the text. Notes contain information about special circumstances. Cautions indicate the possibility of equipment damage or the possibility of personal injury. “Abbreviations” on page 32 for a list of abbreviations used throughout this technical practice.
- Page 4 Using This Manual 150-451-142-04, Revision 04 October 8, 1998 HDU-451 List 4B...
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Page 5: Table Of Contents
150-451-142-04, Revision 04 Table of Contents ABLE OF ONTENTS Product Overview________________________________________ 1 Description and Features............1 Applications ................2 Functional Description____________________________________ 4 Outside Enclosure Deployment Rules ........4 Front Panel ................8 Loopback Design Description..........10 Installation ____________________________________________ 11 Inspecting Your Shipment ............. 11 Installing the HDU-451 List 4B.......... - Page 6 Table of Contents 150-451-142-04, Revision 04 Technical Specifications __________________________________30 Pinouts_________________________________________________31 Abbreviations ___________________________________________32 Product Support_________________________________________35 Technical Support..............35 Warranty .................36 FCC Compliance ..............37 Modifications................37 October 8, 1998 HDU-451 List 4B...
- Page 7 150-451-142-04, Revision 04 List of Figures IST OF IGURES Figure 1. HiGain Installation with Two Doublers........3 Figure 2. HDU-451 Block Diagram............5 Figure 3. The HDU-451 List 4B Front Panel......... 8 Figure 4. HiGain Loopbacks..............10 Figure 5. Doubler Log On Screen ............18 Figure 6.
- Page 8 List of Tables 150-451-142-04, Revision 04 IST OF ABLES Table 1. HDSL Loss Over Cables ............3 Table 2. Deployment Rules for the 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.
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Page 9: Product Overview
150-451-142-04, Revision 04 Product Overview RODUCT VERVIEW PairGain’s HiGain Model HDU-451 List 4B low power Doubler Unit (Figure 3 on page 8) extends the range of the HiGain repeaterless T1 transmission system. When installed between a HiGain Line Unit with doubler-powering capability, and an HRU-412 HiGain Remote Unit, the HDU-451 enables 1.544 Mbps transmission over an extended Carrier Serving... -
Page 10: Applications
Product Overview 150-451-142-04, Revision 04 In line with PairGain's continuing efforts to provide equipment that fully complies with new industry standards, the List 4B doubler has been enhanced with a special ground fault-detecting circuit described in Paragraph R7-1, Section 7.2.1 of GR-1089-CORE, Issue 1, Revision 1, December, 1996. -
Page 11: Figure 1. Higain Installation With Two Doublers
150-451-142-04, Revision 04 Product Overview The HiGain system operates with any number of other T1, POTS, Digital Data Service (DDS) or other HiGain Systems sharing the same cable binder group. In order to achieve optimum performance, the electrical length (196 kHz loss) of all doubler spans should be as close as possible to being equal. -
Page 12: Functional Description
EPLOYMENT ULES Take care when deploying the HDU-451 in sealed multislot outside enclosures, such as the PairGain 3-slot HRE-423 or 4-slot HRE-454 enclosures. To avoid excessive heat build up, follow the deployment rules shown in Table 2 on page 6... -
Page 13: Figure 2. Hdu-451 Block Diagram
-40ºF with no solar load, to +115ºF with maximum solar load and maximum power dissipation. The doubler may also be enclosed in the PairGain single-slot HRE-450 outdoor enclosure. Its thermal limits are also shown in Table Figure 2. -
Page 14: Table 2. Deployment Rules For The Hre-423 And Hre-450
Functional Description 150-451-142-04, Revision 04 Table 2. Deployment Rules for the HRE-423 and HRE-450 Enclosures Orientation Occupied Slots Solar Load Max Ambient Temp HRE-423 Vertical 1, 2, 3 Full 120ºF Vertical 1, 2, 3 None 130ºF Vertical 1, 2 Full 130ºF Vertical 1, 2... -
Page 15: Table 3. Deployment Rules For The Hre-454 Enclosure
150-451-142-04, Revision 04 Functional Description Table 3. Deployment Rules for the HRE-454 Enclosure Orientation Occupied Slots Solar Load Max Ambient Temp Vertical 1, 2, 3, 4 Full 115ºF Vertical 1, 2, 3, 4 None 125ºF Vertical 1, 2, 4 Full 125ºF Vertical 1, 2, 4... -
Page 16: Front Panel
Functional Description 150-451-142-04, Revision 04 RONT ANEL 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 Front Panel October 8, 1998 HDU-451 List 4B... -
Page 17: Table 4. The Features Of The Hdu-451 Front Panel
150-451-142-04, Revision 04 Functional Description Table 4. The Features of the HDU-451 Front Panel Feature Function +/- V Jacks These two test jacks enable you to monitor the input voltage feed on the HDSL line. Typical values range from 130V to 200V, based on the distance from the HLU or first HDU-451. -
Page 18: Loopback Design Description
Functional Description 150-451-142-04, Revision 04 OOPBACK ESIGN ESCRIPTION Figure 4 shows the complete family of loopbacks that a HiGain system can execute. Four of these loopbacks (NDU1, NDU2, CDU1, and CDU2) occur in the doubler. These loopbacks 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. -
Page 19: Installation
“Product Support” on page 35 for more information). HDU-451 L NSTALLING THE The HDU-451 mounts in the following PairGain Remote Enclosures: • HRE-423 (three-slot, double-width, outdoor, above or below ground) • HRE-454 (four slot, outdoor, above or below ground) •... -
Page 20: Troubleshooting
Installation 150-451-142-04, Revision 04 Push the unit into the card edge connector until it is entirely within the card guide. The unit should snap into place, indicating that the unit is properly seated. Check the indicator lights on the front panel: •... -
Page 21: Solutions To Common Problems
150-451-142-04, Revision 04 Installation Solutions to Common Problems This section lists several common problems and describes possible solutions. If the LEDs do not light: • Verify the HLU is installed and operational in the central office. Verify proper cabling between the Doubler Enclosure and the central office. •... -
Page 22: Line Unit Status Menu Messages
Installation 150-451-142-04, Revision 04 If the HDU-451 loses power, the HLU at the central is not present. Measure the resistance of the HDSL input loop. Resistance should be normal loop resistance plus the 25-Ohm signature of the HLU List xD. Line Unit Status Menu Messages Table 5 shows the messages that can appear on the line unit four-character... - Page 23 150-451-142-04, Revision 04 Installation Table 5. HLU-451 Status Menu Messages (Cont.) Message Full Name Description LOOPBACKS SMJK SmartJack Loopback Loopback at HRU-412 towards network initiated by 2 in 5 in-band loopback code or out-of-band ESF data link code. See Figure 4 on page NREM Network Remote Loopback at HRU-412 (remote) towards...
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Page 24: Monitoring The Hdsl System
Monitoring the HDSL System 150-451-142-04, Revision 04 Table 5. HLU-451 Status Menu Messages (Cont.) Message Full Name Description CREM Customer Remote Loopback at HLU (remote) towards customer Loopback initiated from CPE (customer) by a family of special loopbacks (SPLP) or from maintenance terminal or by depressing both the MODE and SEL HLU front panel push-buttons. -
Page 25: Connecting To The Terminal
150-451-142-04, Revision 04 Monitoring the HDSL System ONNECTING TO THE ERMINAL To connect a dumb terminal: Connect a standard 9-pin serial terminal cable to the Craft port on the HDU-451. Figure 13 on page 32 shows the pinouts for the Craft port. Connect the other end of the cable to the 9-pin COM port of the dumb terminal or PC. -
Page 26: Navigating The Terminal Menus
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ BBBBB EEEEEE RRRRR BBBBB EEEE RRRRR UUUUU BBBBB LLLLLL EEEEEE PAIRGAIN TECHNOLOGIES ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ HIT <ENTER> TO LOG IN Figure 5. Doubler Log On Screen Press to open the Remote Terminal Main Menu. AVIGATING THE ERMINAL ENUS Table 6 lists the keys you can use on the dumb terminal keyboard to navigate through the terminal menus and screens. -
Page 27: The Main Menu
150-451-142-04, Revision 04 Monitoring the HDSL System Table 6. Terminal Navigational Keys 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 next page of a report Clears the current values and returns them to zero The Remote Terminal Main Menu provides access to the maintenance and... -
Page 28: Table 7. Main Menu Options
Monitoring the HDSL System 150-451-142-04, Revision 04 Table 7 lists the options available through the Main Menu. To access any of the Main Menu options, type the letter of the option, then press Table 7. Main Menu Options Option Function Go to A. -
Page 29: View Span Status
150-451-142-04, Revision 04 Monitoring the HDSL System TATUS The Span Status screens provide system status information for each span between the HLU and the HRU. The screens show information about: • HDSL Loops 1 and 2 • DS1 interface • Loopbacks •... -
Page 30: Table 8. Span Status Screen Fields
Monitoring the HDSL System 150-451-142-04, Revision 04 At this screen you have the following options: • Type , then press to exit and return to the Main Menu. • Type , then press to update the information displayed on the screen. -
Page 31: View System Settings
150-451-142-04, Revision 04 Monitoring the HDSL System Table 8. Span Status Screen Fields (Cont.) Field Description 24 Hour UAS The number of seconds during which the DS1 input signal was absent Count (125 or more consecutive 0s). Frame Type Type of DS1 framing used on the input stream (SF, ESF, Unframed or No Activity). -
Page 32: Figure 8. System Settings Screen
Monitoring the HDSL System 150-451-142-04, Revision 04 SYSTEM SETTINGS TIME: 00:30:50 DATE: 01/07/97 CIRCUIT ID#: -- P -- EQUALIZATION: SMART-JACK LB: ENABLE SPECIAL LPBK: GNLB POWER: ENABLE ZBTSI: ES ALARM THRES: NONE LOOPBACK TIMEOUT: 60 ALARM: DISABLE DS1 CODE: AUTO FRAMING: AUTO AIS ON HDSL LOSW: 2 LOOPS... - Page 33 150-451-142-04, Revision 04 Monitoring the HDSL System Table 9. System Settings Screen Fields (Cont.) Field Description ZBTSI Indicates whether ZBTS is either On or Off. An On setting tells the system that the ESF frame is operating in its Zero Byte Time Slot Interface (ZBTSI) mode.
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Page 34: View Performance Data
Monitoring the HDSL System 150-451-142-04, Revision 04 ERFORMANCE From the Main Menu, type , then press . The Span 1 Performance Data screen displays. Date: 05/10/05 SPAN 1 PERFORMANCE DATA CIRCUIT ID: -- P -- ERRORED SECONDS/UNAVAILABLE SECONDS HDSL-1 HDSL-2 HDU1 HDU1... -
Page 35: View Performance History
150-451-142-04, Revision 04 Monitoring the HDSL System ERFORMANCE ISTORY From the Main Menu, type , then press . The 7 Day History screen for Span 1 displays. Time: 02:51:24 7 DAY HISTORY CIRCUIT ID#: -- P -- SPAN 1 ERRORED SECONDS/UNAVAILABLE SECONDS HDSL-1 HDSL-2... -
Page 36: View Alarm History
Monitoring the HDSL System 150-451-142-04, Revision 04 LARM ISTORY From the Main Menu, type , then press . The Alarm History screen displays. 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... -
Page 37: Table 10. Alarm History Fields
150-451-142-04, Revision 04 Monitoring the HDSL System Table 10. Alarm History Fields Field Description Type Identifies the type of alarm LOS, DS1-HLU First and last instance of LOS at the HLU; Current condition, number of alarms LOS, DS1-HRU First and last instance of LOS at the HRU; Current condition, number of alarms Span1 LOSW, First and last instance of LOSW on HDSL1;... -
Page 38: Technical Specifications
Technical Specifications 150-451-142-04, Revision 04 ECHNICAL PECIFICATIONS HDSL Line Code 784 kbps, 2B1Q full duplex HDSL Output +13 dBm ±0.5 dB @ 135 ohms HDSL Line Impedance 135 ohms HDSL Line Input DC 330 kilohms resistive signature HDSL Line Output DC 25 ohms resistive signature Maximum Provisioning Loss 35 dB @ 196 kHz, 135 ohms... -
Page 39: Pinouts
150-451-142-04, Revision 04 Pinouts INOUTS 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 Craft port. Figure 12. -
Page 40: Abbreviations
Abbreviations 150-451-142-04, Revision 04 Figure 13. HDU-451 DB-9 Pin Outs. BBREVIATIONS 2Binary1Quaternary 2B1Q Alarm Indication Signal Alarm Alarm Pattern Option ALMP Alternate Mark Inversion American Wire Gauge Bi-directional 8-zero Substitution B8ZS Bridged October 8, 1998 HDU-451 List 4B... - Page 41 150-451-142-04, Revision 04 Abbreviations Bit Error Rate BIT Error Rate Threshold BERT Bipolar Violation Bi-polar Violation Transparency BPVT Customer Interface Central Office Customer Local Loopback CLOC Customer Premises Equipment Cyclic Redundancy Check Carrier Service Area Channel Service Unit Decibel Data Circuit-Terminating Equipment Disable Data Link Data Link Control...
- Page 42 Abbreviations 150-451-142-04, Revision 04 HiGain Doubler Unit HiGain Line Unit HiGain Remote Enclosure HiGain Remote Unit Interface-Customer Premises Equipment I-CPE Loopback Liquid Crystal Display Light Emitting Diode Loss of Signal Loss of Sync Word LOSW Local Power LPWR Level Network Equipment Building System NEBS Network Network Interface...
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Page 43: Product Support
UPPORT This section contains product support and warranty information. ECHNICAL UPPORT PairGain Technical Assistance is available 24 hours a day, 7 days a week by contacting PairGain Customer Service Engineering group at: (800) 638-0031 or (714) 832-9922 Telephone: (714) 832-9924... -
Page 44: Warranty
Do not try to repair the unit. If it fails, replace it with another unit and return the faulty unit to PairGain for repair. Any modifications of the unit by anyone other than an authorized PairGain representative voids the warranty. -
Page 45: Fcc Compliance
ODIFICATIONS The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by PairGain Technologies, Inc. may void the user's authority to operate the equipment. All wiring external to the products should follow the provisions of the current edition of the National Electrical Code. - Page 46 Corporate Office 14402 Franklin Avenue Tustin, CA 92780 Tel: (714) 832-9922 Fax: (714) 832-9924 For Technical Assistance: (800) 638-0031...