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-412 150-1103-08 T1L2CC0AAA ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE ™150-412-108-02B¨ 150-412-108-02 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 3 150-412-108-02, Revision 02 Using This Technical Practice SING ECHNICAL RACTICE Two types of messages, identified by icons, may appear in the text. Notes contain information about special circumstances. Cautions indicate the possibility of equipment damage or the possibility of personal injury. BBREVIATIONS Alternate Mark Inversion Bit Error Rate...
- Page 4 Abbreviations 150-412-108-02, Revision 02 Super Frame Signal-to-Noise Ratio Special Loopback SPLB Zero Byte Time Slot Interface ZBTSI July 13, 1998 HRU-412 List 8...
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Page 5: Table Of Contents
150-412-108-02, Revision 02 Table of Contents ABLE OF ONTENTS Overview _______________________________________________ 1 Applications ____________________________________________ 2 Specifications ___________________________________________ 3 Functional Description____________________________________ 5 Operational Capabilities............5 Front Panel Features ..............7 Rear Panel Features..............10 Local and Line Powering ............12 Installation ____________________________________________ 14 Unpack and Inspect the Shipment.......... - Page 6 Table of Contents 150-412-108-02, Revision 02 Product Support_________________________________________33 Technical Support..............33 Warranty .................34 FCC Compliance ..............35 Modifications................35 UL Listing ................35 CSA Certification ..............36 July 13, 1998 HRU-412 List 8...
- Page 7 150-412-108-02, Revision 02 List of Figures IST OF IGURES 1. HRU-412 List 8 Block Diagram ............6 2. HRU-412 List 8 Front Panel .............. 7 3. HRU-412 List 8 Rear Panel.............. 10 4. HRU-412 List 8 Pinouts ..............15 5. HRU-412 List 8 Craft Port Wiring........... 18 6.
- Page 8 List of Tables 150-412-108-02, Revision 02 IST OF ABLES 1. HDSL Loss Over Cables..............3 2. HRU-412 List 8 Front Panel Components..........8 3. Rear Panel Components..............11 4. HRU-412 List 8 Alarm History Screen Definitions ......29 viii July 13, 1998 HRU-412 List 8...
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Page 9: Overview
Overview VERVIEW ® ® The PairGain HiGain Remote Unit Model HRU-412 List 8 is the remote end of a repeaterless T1 transmission system. An HRU-412 List 8 connects to a HiGain Line Unit (HLU), creating a HiGain system which provides 1.544 Mbps transmission on two unconditioned copper pairs over the full Carrier Service Area (CSA) range. -
Page 10: Applications
• DS0 blocking support The HRU-412 List 8 supports PairGain’s 1 x 1 Protection Switching System. The HRU-412 List 8 can be line powered or locally powered and has a simplexed sealing current option. The HDSL line input resistive signature is 14 Ω. -
Page 11: Specifications
150-412-108-02, Revision 02 Specifications Table 1. HDSL Loss Over Cables Loss at 196 kHz Cable Gauge Ohms per kft (db/kft) 26/0.4mm 3.88 24/0.51mm 2.84 22/0.61mm 2.18 19/0.91mm 1.54 A HiGain system operates with a variety of other T1, POTS, Digital Data Service (DDS) equipment or other HiGain systems sharing the same cable binder group. - Page 12 Specifications 150-412-108-02, Revision 02 Electrical Protection Secondary surge and power cross protection on all DS1 and HDSL ports Environmental Operating Temperature - 40° C to + 65° C Humidity 5 to 95% (non-condensing) Mounting Single wide 400 Mechanics type shelf One-way Delay <...
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Page 13: Functional Description
This section describes the functions of the HRU-412 List 8. PERATIONAL APABILITIES HiGain utilizes 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 8. This provides a total capacity of 1.568 Mbps between the two units. - Page 14 Functional Description 150-412-108-02, Revision 02 Figure 1 shows a block diagram of the HRU-412 List 8. Figure 1. HRU-412 List 8 Block Diagram July 13, 1998 HRU-412 List 8...
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Page 15: Front Panel Features
Receive (RCV) and Transmit (XMT) Access Jacks Code LEDs Framing (FRM) LEDs HDSL Craft port HDSL LEDs PairGain Configuration number Card handle (inside handle) TELEPHONE CO PROPERTY Figure 2. HRU-412 List 8 Front Panel HRU-412 List 8 July 13, 1998... - Page 16 Functional Description 150-412-108-02, Revision 02 Table 2. HRU-412 List 8 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 17 150-412-108-02, Revision 02 Functional Description Table 2. HRU-412 List 8 Front Panel Components (Cont.) Name Function HDSL LEDs LP1 OK LED flashes green while HDSL Loop 1 is synchronizing with the HLU. The LED lights green to indicate that loop 1 is properly synchronized with the HLU.
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Page 18: Rear Panel Features
Functional Description 150-412-108-02, Revision 02 ANEL EATURES The HRU-412 List 8 back panel features are shown in Figure 3. Table 3 describes the features. Figure 3. HRU-412 List 8 Rear Panel July 13, 1998 HRU-412 List 8... - Page 19 150-412-108-02, Revision 02 Functional Description Table 3. 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 20: Local And Line Powering
Functional Description 150-412-108-02, Revision 02 Table 3. Rear Panel Components (Cont.) Switch Setting Function RLEV Configures the T1 RCV level to 0 dB. This sets the T1 output signal level from the HRU-412 List 8 toward the NI to 0 dB. Use this setting when the HRU-412 List 8 is not functioning as a NID but is connected to an external NID. - Page 21 150-412-108-02, Revision 02 Functional Description The simplex sealing current is not compatible with doublers HDU-451 List 1, 2, or 3. These doublers block the flow of simplex sealing current. To allow the flow of sealing current, use doublers HDU-451 List 4, HDU-439, HDU-438, HDU-409, HDU-407 or HDU-404 with the HRU-412 List 8.
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Page 22: Installation
If you must store the equipment for a prolonged period, store it in the original container. HRU-412 L NSTALL THE The HRU-412 List 8 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 23 150-412-108-02, Revision 02 Installation The HRU-412 List 8 pin-outs are shown in Figure 4. The active pins are shown in black. Figure 4. HRU-412 List 8 Pinouts HRU-412 List 8 July 13, 1998...
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Page 24: Installation Test
Installation 150-412-108-02, Revision 02 To install the HRU-412 List 8: Ensure that the shelf is correctly mounted and wired (refer to the shelf’s technical practice for additional information). Slide the HRU-412 List 8 into the card guides for the desired slot, then push the unit back until it touches the backplane card-edge connectors. - Page 25 150-412-108-02, Revision 02 Installation Repeat step 2. If the test passes, a problem exists in the cable pair or in the HRU-412 List 8. If the test fails, the problem is at the CO. Check that the proper ports are in use for the HDSL and DS1 pair by using an ohm-meter to verify that the HDSL ports have a 180k transmit to receive resistive signature and that the DS1 ports have a 15 ohm transmit to receive resistive signature.
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Page 26: Provision And Monitor Performance
Provision and Monitor Performance 150-412-108-02, Revision 02 ROVISION AND ONITOR ERFORMANCE The following sections describe how to perform configuration, provisioning and performance monitoring functions using the HRU-412 List 8 menus and screens. ASCII T ONNECT AN ERMINAL Connect an ASCII terminal: Connect a standard 9-pin serial terminal cable to the Craft port, a DB-9 female connector, on the HRU-412 List 8. -
Page 27: Log On And Use The Menus
150-412-108-02, Revision 02 Provision and Monitor Performance Connect the other end of the terminal cable to the console port on the ASCII terminal. Configure the ASCII terminal to the following communication settings: • 1200 to 9600 baud • no parity •... - Page 28 Provision and Monitor Performance 150-412-108-02, Revision 02 Press the spacebar several times to activate the autobaud feature and to display the logon screen. When using doublers, the remote logon screen displays when the HRU-412 List 8 and the HLU synchronize. See Figure Figure 6.
- Page 29 150-412-108-02, Revision 02 Provision and Monitor Performance Hi-GAIN HRU-412 MAINTENANCE TERMINAL MAIN MENU (ver V2.8R-007A) A. VIEW SPAN STATUS B. SET CLOCK C. SYSTEM SETTINGS D. VIEW PERFORMANCE DATA E. VIEW PERFORMANCE HISTORY F. VIEW ALARM HISTORY Figure 7. Main Menu, Local Log On Access options available on the Main Menu by typing the desired letter and then pressing (17(5...
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Page 30: View Span Status
Provision and Monitor Performance 150-412-108-02, Revision 02 View Span Status From the Main Menu, type . The Span Status screen displays. When no doublers are in use, the following Span Status screen displays: SPAN STATUS (HLU/ver0.0-0000: HRU/ver2.8-008) TIME: 08:29:95 DATE: 06/25/97 ALARMS: NONE LOOPBACK: OFF... - Page 31 150-412-108-02, Revision 02 Provision and Monitor Performance Figure 9. Span 1 Status Screen, Doublers in Use Do any of the following: • Type to view the next span. • Type to update the screen. • Type to exit. HRU-412 List 8 July 13, 1998...
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Page 32: Set Clock
Provision and Monitor Performance 150-412-108-02, Revision 02 Set Clock This option is available during Local log on only. From the Main Menu, type to display the Set Clock menu. Figure 10. Set Clock Screen Enter the time (in 24 hour format) at the Time prompt. (17(5 Press Enter the date (mm/dd/yy) at the Date prompt. -
Page 33: System Settings
150-412-108-02, Revision 02 Provision and Monitor Performance System Settings From the Main Menu, type & to display the System Settings menu. Figure 11. System Settings Menu View the HRU-412 List 8 system settings. Change system settings at the HLU connected to the HRU-412 List 8. HRU-412 List 8 July 13, 1998... -
Page 34: View Performance Data
Provision and Monitor Performance 150-412-108-02, Revision 02 View Performance Data From the Main Menu, type to display the Performance Data screen. Figure 12. Performance Data Screen If spans are in use, do any of the following: • Type to view the spans. •... -
Page 35: View 7 Day History
150-412-108-02, Revision 02 Provision and Monitor Performance View 7 Day History From the Main Menu, type to display the 7 Day History screen. Figure 13. 7 Day History Screen If spans are in use, type to view them. Type to exit the 7 Day History screen. HRU-412 List 8 July 13, 1998... -
Page 36: View Alarm History
Provision and Monitor Performance 150-412-108-02, Revision 02 View Alarm History From the Main Menu, type to display the Alarm History screen. Figure 14. Alarm History Screen Type to update the Alarm History screen to the most current data. If spans are in use, type to view them. - Page 37 150-412-108-02, Revision 02 Provision and Monitor Performance Table 4 lists the HRU-412 List 8 alarm types and descriptions. Table 4. HRU-412 List 8 Alarm History Screen Definitions Message Full Name Description NONE No Alarms No active alarms, or alarms previously detected are no longer active or have been reset.
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Page 38: Loopbacks
Loopbacks 150-412-108-02, Revision 02 OOPBACKS The HRU-412 List 8 supports 6 types of loopbacks (see Figure 15). • TLOS (transmit loss of signal) • CREM (customer remote loopback) • NREM (network remote loopback) • NLOC (network local loopback) • CLOC (customer local loopback) •... - Page 39 150-412-108-02, Revision 02 Loopbacks A SmartJack loopback causes the T1 interface chip to transmit the AIS pattern to the NI and back to the HRU-412 List 8 T1 receiver circuit. The T1 input to the HRU-412 List 8 at the XMT port is disconnected and terminated in 100 Ω.
- Page 40 Loopbacks 150-412-108-02, Revision 02 All HRU-412 List 8 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 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... -
Page 44: Csa Certification
Product Support 150-412-108-02, Revision 02 CSA C ERTIFICATION The HRU-412 List 8 has been tested and found to comply with CSA Standard C22.2-950 with telecommunication features. All wiring external to the product(s) should follow the provisions of the current edition of the National Electrical Code. July 13, 1998 HRU-412 List 8... - Page 46 Corporate Office 14402 Franklin Avenue Tustin, CA 92780 Tel: (714) 832-9922 Fax: (714) 832-9924 For Technical Assistance: (800) 638-0031...