Related Manuals for PairGain HiGain HRU-412
Summary of Contents for PairGain HiGain HRU-412
- Page 1 EMOTE Model List Number Part Number CLEI Code HRU-412 150-1103-07 T1LIEV04 ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE 150-412-107-03 ECTION...
- Page 2 No license is granted by implication or otherwise under any patent or patent rights of PairGain Technologies. PairGain Technologies reserves the right to change specifications at any time without notice.
- Page 3 OCUMENTATION If you have comments on this PairGain document, send an email to technical_publications@pairgain.com. Type the product name and the section number of the document in the subject area of the email message.
- Page 4 Inspecting the Shipment 150-412-107-03, Revision 03 November 19, 1999 HRU-412 List 7...
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Page 5: Table Of Contents
150-412-107-03, Revision 03 Table of Contents ABLE OF ONTENTS Overview _______________________________________________ 1 Applications ____________________________________________ 2 Front and Rear Panel_____________________________________ 3 Installation _____________________________________________ 9 Local Powering ..............10 Installation Test..............10 Remote Login __________________________________________ 11 Connecting to a Maintenance Terminal ......... 11 Logging On and Off............... - Page 6 List of Figures 150-412-107-03, Revision 03 IST OF IGURES 1. HRU-412 List 7 Front Panel..............3 2. HRU-412 List 7 Back Panel ..............7 3. Connecting to a Maintenance Terminal..........11 4. HRU-412 List 7 Loopbacks..............15 5. HRU-412 List 7 Pinouts ...............19 6. Craft Port Wiring ..................20 7.
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Page 7: Overview
150-412-107-03, Revision 03 Overview VERVIEW ® ® The PairGain HiGain Remote Unit Model HRU-412 List 7 is the remote end of a repeaterless T1 transmission system. An HRU-412 List 7 connects to a HiGain Line Unit (HLU-231, HLU-232, HLU-319, or HLU-388), creating a HiGain system which provides 1.544 Mbps transmission on two... -
Page 8: Applications
Applications 150-412-107-03, Revision 03 The HRU-412 List 7 can be line powered or locally powered with a metallic sealing current option. The input resistive signature is 180 k at each HDSL port. PPLICATIONS A HiGain system, consisting of a HiGain line unit and a HiGain remote unit, provides a quick and cost-effective way of delivering T1 High Capacity Digital Service (HCDS) to customers over copper pairs. -
Page 9: Front And Rear Panel
150-412-107-03, Revision 03 Front and Rear Panel RONT AND ANEL Figure 1 shows the front panel of the HRU-412 List 7. Table 1 on page 4 describes its components. Figure 1. HRU-412 List 7 Front Panel HRU-412 List 7 November 19, 1999... - Page 10 Front and Rear Panel 150-412-107-03, Revision 03 Table 1. HRU-412 List 7 Front Panel Components Name Function Test points Allow the 60 mA CPE current option to be measured. The current flowing is related to the voltage measured across the + and - test points by the following relationship: CPE CURRENT = 1 mA/1 mV.
- Page 11 150-412-107-03, Revision 03 Front and Rear Panel Table 1. HRU-412 List 7 Front Panel Components (Cont.) Name Function HDSL LEDs The LP1 OK LED flashes green while HDSL Loop 1 is synchronizing with the HLU. The LED is steady green indicating that Loop 1 is properly synchronized with the HLU.
- Page 12 Front and Rear Panel 150-412-107-03, Revision 03 Table 1. HRU-412 List 7 Front Panel Components (Cont.) Name Function Configuration For some products, the configuration number may contain either a five- or number six-digit warranty configuration number or a standalone two- or three-digit configuration number as follows: Digit 1 - Last digit of shipment year.
- Page 13 150-412-107-03, Revision 03 Front and Rear Panel The HRU-412 List 7 back panel features are shown in Figure Table 1 describes the features. Figure 2. HRU-412 List 7 Back Panel HRU-412 List 7 November 19, 1999...
- Page 14 Front and Rear Panel 150-412-107-03, Revision 03 Table 2. Rear Panel Components Switch Setting Function I-CPE Sets the CPE current to 0 mA. Sets the CPE current to 60 mA to power an external NID. The CPE current control signals terminate on pins 32 and 34 of the card-edge converter.
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Page 15: Installation
Be sure to wear an antistatic wrist strap. Avoid touching static-sensitive components on the circuit board. The HRU-412 List 7 mounts in the following shelves (indoor use): • PairGain’s HRE-421 (double-width, single-mount) • HRE-422 (double-wide, double mount) • HRE-424 (double-wide, four-unit wall mount) •... -
Page 16: Local Powering
Installation 150-412-107-03, Revision 03 OCAL OWERING When locally powered, the HRU-412 List 7 provides 15 mA (short loop) or 10 mA (long loop) metallic sealing current toward the HLUs and HRUs (all models) over the two HDSL pairs. JP2, shown in Figure 2, allows the sealing current to be enabled or disabled. -
Page 17: Remote Login
150-412-107-03, Revision 03 Remote Login EMOTE OGIN The HRU-412 List 7 supports remote login through a maintenance terminal or PC connected to its front-panel RS-232 craft port. Remote login creates menus and screens for the HRU-412 that are identical to those at the HLU. Once logged on you can access the Remote Terminal Main Menu screens to view system settings and status, and initiate loopbacks. - Page 18 Remote Login 150-412-107-03, Revision 03 The HRU-412 front-panel RS-232 craft port allows you to use a standard serial cable to connect your system to a maintenance terminal or PC running a terminal emulation program. Connect a standard 9-pin serial terminal cable to the Craft port, a DB-9 female connector, on the HRU-412.
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Page 19: Logging On And Off
150-412-107-03, Revision 03 Remote Login OGGING N AND To log on and access the Remote Terminal Main Menu screens using the maintenance terminal: Press the several times to activate the autobaud feature and SPACEBAR to display the Remote Login screen. Press the key to perform a remote login to the HiGain ENTER... -
Page 20: Remote Terminal Main Menu
Remote Login 150-412-107-03, Revision 03 EMOTE ERMINAL The Remote Terminal Main Menu items are listed in Table Table 3. Remote Terminal Main Menu Items Name Function View Span Status Allows viewing of span status between the HLU and the HRU-412 including span status for doubler devices (multi-span applications). -
Page 21: Loopbacks
150-412-107-03, Revision 03 Loopbacks OOPBACKS The HRU-412 List 7 supports 4 types of loopbacks (see Figure • TLOS (transmit loss of signal) • NREM (network remote loopback) • CLOC (customer local loopback) • SMJK (SmartJack) Loopback tests can be initiated by using in-band codes or maintenance terminal commands, or by faceplate pushbutton activation. - Page 22 Loopbacks 150-412-107-03, Revision 03 A SmartJack loopback causes the T1 interface chip to transmit the AIS pattern to the NI and back to the HRU-412 List 7 T1 receiver circuit. The T1 input to the HRU-412 List 7 at the XMT port is disconnected and terminated in 100 .
- Page 23 150-412-107-03, Revision 03 Loopbacks All HRU-412 List 7 loopbacks toward the network (NREM and SMJK) are metallic/logic (AIS/ENA) or metallic only (AIS/DIS). The TLOS loopback is a logic loopback. The SMJK and NREM loopbacks perform the same functions; their initiation differs.
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Page 24: Appendix A - Specifications
Appendix A - Specifications 150-412-107-03, Revision 03 A - S PPENDIX PECIFICATIONS HDSL Line Code 784 kbps 2B1Q full duplex HDSL Output +13 dBm + 0.5 dB at 135 HDSL Line Impedance HDSL Startup Time 15 seconds (typical), 60 seconds (maximum) Maximum Provisioning 35 dB at 196 kHz, 135 Loss... -
Page 25: Pinouts
150-412-107-03, Revision 03 Appendix A - Specifications INOUTS The HRU-412 List 7 pinouts are shown in Figure 5. The active pins are shown in black. Figure 5. HRU-412 List 7 Pinouts HRU-412 List 7 November 19, 1999... -
Page 26: Craft Port
Appendix A - Specifications 150-412-107-03, Revision 03 RAFT Figure 6 shows the craft port wiring diagram. Figure 6. Craft Port Wiring November 19, 1999 HRU-412 List 7... -
Page 27: Insertion Loss
150-412-107-03, Revision 03 Appendix A - Specifications NSERTION The general guideline for HiGain system usage is that each loop has less than 35 dB of loss at 196 kHz, with 135 driving and terminating impedances. Table 1 provides a guide for the loss over various cable gauges at 196 kHz and 135 . -
Page 28: Appendix B - Functional Description
ESCRIPTION PERATIONAL APABILITIES HiGain uses PairGain’s 2B1Q HDSL transceiver system to establish two full-duplex 784 kbps data channels between the HLU and a remotely mounted HRU-412 List 7. This provides a total capacity of 1.568 Mbps between the two units. PairGain’s HDSL technology provides full-duplex services at standard T1 rates over copper wires between an HLU and an HRU, that comprises one HiGain system. -
Page 29: Local And Line Powering
150-412-107-03, Revision 03 Appendix B - Functional Description Figure 7 shows a block diagram of the HRU-412 List 7. Figure 7. HRU-412 List 7 Block Diagram OCAL AND OWERING The HRU-412 List 7 unit can be line powered or locally powered. It always chooses the local -48 Vdc power source, if present. - Page 30 Appendix B - Functional Description 150-412-107-03, Revision 03 If local power is lost to an HRU-412 List 7, the last span loses sync. When the HLU or HDU attempts to reestablish sync, it detects that the HRU-412 is not locally powered and applies line power to the HRU. The HRU-412 then powers up and operates normally if within range to support line powering.
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Page 31: Appendix C - Product Support
PairGain product and company information can be found at http://www. pairgain.com using any Web browser. To download PairGain product manuals from the Customer Site portion of the PairGain web page, you need to provide a customer password. If you do not have a password, contact your PairGain sales representative. -
Page 32: Returns
To obtain a return authorization number, you need to provide the original purchase order number to PairGain’s Return Material Authorization (RMA) Department. Call or write PairGain’s RMA Department to ask for an RMA number and any additional instructions. Use the telephone number, fax number or email address listed below: •... - Page 33 150-412-107-03, Revision 03 Appendix C - Product Support Pack the equipment in a shipping carton. Write PairGain’s address and the RMA Number you received from the RMA Department clearly on the outside of the carton and return to: PairGain Technologies, Inc.
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Page 34: Appendix D - Glossary
Appendix D - Glossary 150-412-107-03, Revision 03 D - G PPENDIX LOSSARY Abbreviations used throughout this manual are defined below: 2B1Q 2 Binary,1 Quaternary Alarm Cut Off Alarm Indicator Signal indicating transmission of an all ones pattern Alternate Mark Inversion American National Standards Institute ANSI American Wire Gauge... - Page 35 150-412-107-03, Revision 03 Appendix D - Glossary HiGain Doubler Unit HiGain Line Unit HiGain Remote Enclosure HiGain Remote Unit I-CPE Current (amperes) requirements for Customer Premises Equipment LAIS Local Alarm Indicating Signal Light Emitting Diode LLOS Local Loss of Signal Loss of Signal LOSW Loss of Sync Word...
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Page 37: Certification And Warranty
IMITED ARRANTY 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 regular maintenance. PairGain will repair or replace at PairGain’s option any unit without cost during this period if the unit is found to be defective for any reason other than abuse or incorrect use or installation. - Page 38 Corporate Office 14402 Franklin Avenue Tustin, CA 92780 Tel: 714.832.9922 Fax: 714.832.9924 For Technical Assistance: 800.638.0031...