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I
Model
List Number Part Number
HDU-451
P
E
NGINEERING
™150-451-104-02¨
D
AIN
OUBLER
4
HiGain DOUBLER
PairGain
TELEPHONE CO PROPERTY
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T
AIR
AIN
ECHNOLOGIES
S
ERVICES
S
150-451-104-02
ECTION
150-1143-04 T1R5AJHEAA
HDU 451
UNIT
+
V
-
LOOPBACK
1
HDSL IN
2
1
HDSL OUT
2
RS 232
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T
ECHNICAL
U
NIT
CLEI Code
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Related Manuals for PairGain HiGain HDU-451
Summary of Contents for PairGain HiGain HDU-451
- Page 1 OUBLER Model List Number Part Number CLEI Code HDU-451 150-1143-04 T1R5AJHEAA HDU 451 HiGain DOUBLER UNIT LOOPBACK HDSL IN HDSL OUT RS 232 PairGain TELEPHONE CO PROPERTY ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE ™150-451-104-02¨ 150-451-104-02 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 3 150-451-104-02, Revision 02 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 30 for a list of abbreviations used throughout this technical practice.
- Page 4 Using This Manual 150-451-104-02, Revision 02 September 18, 1998 HDU-451 List 4...
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Page 5: Table Of Contents
150-451-104-02, Revision 02 Table of Contents ABLE OF ONTENTS Product Overview________________________________________ 1 Description and Features............1 Applications ................2 Functional Description____________________________________ 3 Outside Enclosure Deployment Rules ........3 Front Panel ................7 Loopback Design Description..........9 Installation ____________________________________________ 10 Inspecting Your Shipment ............. 10 Installing the HDU-451 List 4 .......... - Page 6 Table of Contents 150-451-104-02, Revision 02 Technical Specifications __________________________________28 Pinouts_________________________________________________29 Abbreviations ___________________________________________30 Product Support_________________________________________33 Technical Support..............33 Warranty .................34 FCC Compliance ..............35 Modifications................35 September 18, 1998 HDU-451 List 4...
- Page 7 150-451-104-02, Revision 02 List of Figures IST OF IGURES Figure 1. HiGain Installation with Two Doublers........3 Figure 2. HDU-451 Block Diagram............4 Figure 3. The HDU-451 List 4 Front Panel..........7 Figure 4. HiGain Loopbacks..............9 Figure 5. Doubler Log On Screen ............17 Figure 6.
- Page 8 List of Tables 150-451-104-02, Revision 02 IST OF ABLES Table 1. HDSL Loss over Cables ............2 Table 2. Deployment Rules for the HRE-423 and HRE-450 Enclosures ..................5 Table 3. Deployment Rules for the HRE-454 Enclosure .......6 Table 4. The Features of the HDU-451 Front Panel ......8 Table 5.
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Page 9: Product Overview
150-451-104-02, Revision 02 Product Overview RODUCT VERVIEW PairGain’s HiGain Model HDU-451 List 4 low power Doubler Unit (Figure 3 on page 7) extends the range of the HiGain repeaterless T1 transmission system. When installed between a HiGain Line Unit (HLU) with doubler-powering capability, and a HiGain Remote Unit (HRU), the HDU-451 enables 1.544 Mbps transmission over an extended Carrier Serving... -
Page 10: Applications
Product Overview 150-451-104-02, Revision 02 PPLICATIONS The primary application of the HDU-451 HiGain Doubler is to extend the delivery of T1 High Capacity Digital Service (HCDS) to customers over metallic cable pairs, up to 24,000 or 36,000 feet (24 AWG). A doubler application is shown in Figure 1 on page 3. -
Page 11: 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 5... -
Page 12: 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... -
Page 13: Table 2. Deployment Rules For The Hre-423 And Hre-450
150-451-104-02, Revision 02 Functional Description 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 14: Table 3. Deployment Rules For The Hre-454 Enclosure
Functional Description 150-451-104-02, Revision 02 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 15: Front Panel
150-451-104-02, Revision 02 Functional Description RONT ANEL Figure 3 shows the front panel of the HDU-451 List 4 and Table 4 describes its features. Figure 3. The HDU-451 List 4 Front Panel HDU-451 List 4 September 18, 1998... -
Page 16: Table 4. The Features Of The Hdu-451 Front Panel
Functional Description 150-451-104-02, Revision 02 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 17: Loopback Design Description
150-451-104-02, Revision 02 Functional Description OOPBACK ESIGN ESCRIPTION Figure 4 on page 9 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 18: Installation
“Product Support” on page 33 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 19: Troubleshooting
150-451-104-02, Revision 02 Installation 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 20: Solutions To Common Problems
Installation 150-451-104-02, Revision 02 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 21: Line Unit Status Menu Messages
150-451-104-02, Revision 02 Installation 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. Line Unit Status Menu Messages Table 5 shows the messages that can appear on the line unit four-character front panel display. - Page 22 Installation 150-451-104-02, Revision 02 Table 5. HLU-451 Status Menu Messages (Cont.) Message Full Name Description LOOPBACKS SMJK SmartJack Loopback Loopback at HRU 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 (remote) towards network...
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Page 23: Monitoring The Hdsl System
150-451-104-02, Revision 02 Monitoring the HDSL System 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 24: Connecting To The Terminal
Monitoring the HDSL System 150-451-104-02, Revision 02 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 30 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 25: 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 26: The Main Menu
Monitoring the HDSL System 150-451-104-02, Revision 02 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 27: View Span Status
150-451-104-02, Revision 02 Monitoring the HDSL System 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 28: Figure 7. Span 1 Status Screen
Monitoring the HDSL System 150-451-104-02, Revision 02 • Current alarms • Time and Date From the Main Menu, type , then press . The Span 1 Status screen displays. 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... -
Page 29: Table 8. Span Status Screen Fields
150-451-104-02, Revision 02 Monitoring the HDSL System Table 8. Span Status Screen Fields Field Description Time Time of day when the Span Status was last updated. Date Date then the Span Status was last updated. Alarms Lists any current alarms. See “View Alarm History”... -
Page 30: View System Settings
Monitoring the HDSL System 150-451-104-02, Revision 02 YSTEM ETTINGS The System Settings screen allows you to analyze and view configurable parameters set at the HLU. The information on this screen is for reference only and cannot be altered. The system setting can only be set at the HLU. From the Main Menu, type , then press... -
Page 31: Table 9. System Settings Screen Fields
150-451-104-02, Revision 02 Monitoring the HDSL System Table 9. System Settings Screen Fields Field Description Time Time of day when System Settings were checked. Date Date when System Settings were checked. Equalization Indicates settings for equalizer of either EX1, 0 (DSX-1 for 0-133 ft), 133 (DSX-1 for 133-266 ft), 266 (DSX-1 for 266-399 ft), 399 (DSX-1 399-533 ft), 533 DSX-1 for 533-655 ft). -
Page 32: View Performance Data
Monitoring the HDSL System 150-451-104-02, Revision 02 Table 9. System Settings Screen Fields (Cont.) Field Description Margin Alarm Indicates the settings for the margin alarm thresholds. (ALM) Threshold (THRES) DS0 Blocking Indicates status of DS0 blocked channels and identifies the channels that have been blocked (using “xx”... -
Page 33: View Performance History
150-451-104-02, Revision 02 Monitoring the HDSL System At this screen you have the following options: • Type , then press to exit and return to the Main Menu. • Type , then press to view the previous screen. •... -
Page 34: View Alarm History
Monitoring the HDSL System 150-451-104-02, Revision 02 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 35: Table 10. Alarm History Fields
150-451-104-02, Revision 02 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 36: Technical Specifications
Technical Specifications 150-451-104-02, Revision 02 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 37: Pinouts
150-451-104-02, Revision 02 Pinouts INOUTS The figures in this section show the pinouts for the HDU-451 List 4. Figure 12 on page 29 shows the pinouts for the HDU-451 connector. Figure 13 on page 30 shows the pinouts for the HDU-451 Craft port. Figure 12. -
Page 38: Abbreviations
Abbreviations 150-451-104-02, Revision 02 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 Bipolar with 8-zero Substitution B8ZS Bridged September 18, 1998 HDU-451 List 4... - Page 39 150-451-104-02, Revision 02 Abbreviations Bit Error Rate BIT Error Rate Threshold BERT Bipolar Violation 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 Digital Service, Level 1 Digital System Cross-Connect frame...
- Page 40 Abbreviations 150-451-104-02, Revision 02 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 41: 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 42: 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 43: 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 44 Corporate Office 14402 Franklin Avenue Tustin, CA 92780 Tel: (714) 832-9922 Fax: (714) 832-9924 For Technical Assistance: (800) 638-0031...