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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-412 150-1103-09 T1L2CCKAAA ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE 150-412-109-01 ECTION Revision History of this practice. July 9, 1997 A) Initial Release...
- Page 2 Section 150-412-109 July 9, 1997 Revision 01 ©Copyright 1997 PairGain Technologies, Inc. PairGain is a registered trademark, and HiGain is a trademark of PairGain Technologies, Inc. Page ii PairGain Engineering - Plant Series HiGain HRU-412...
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Page 3: Table Of Contents
22. Loopback Design Description ..................40 23. Loopback Test Procedures ..................... 42 E. PRODUCT SUPPORT ........................44 24. Technical Support ......................44 25. PairGain Warranty ......................44 26. Certification ........................44 F. ABBREVIATIONS AND GLOSSARY ..................45 27. Abbreviations and Glossary.................... 45... - Page 4 Three types of messages, identified by icons, appear in the text: A note informs you of special circumstances. A caution indicates the possibility of equipment damage. A warning indicates the possibility of personal injury. Page iv PairGain Engineering - Plant Series HiGain HRU-412...
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Page 5: Product Overview
Section 150-412-109 A. PRODUCT OVERVIEW 1. Description and Features ® This technical practice describes the PairGain HiGain ™ HRU-412 List 9, a HiGain Remote Unit (HRU) which functions as the remote end of a repeaterless T1 transmission system. When used with HiGain Line Units (HLUs) and HiGain Doubler Units (HDUs), the HiGain system provides 1.544... - Page 6 • DS0 blocking • Compatible with PairGain 1 x 1 Protection Switching System The Transmit Loss of Signal Loopback (TLOS-LB) option in the HRU-412 List 8 has been replaced by the SF-RAI option. This option controls the generation of an SF-RAI signal in response to an ESF-RAI message.
- Page 7 HRU-412 through a dumb terminal (or a PC with terminal emulation software). HDSL LEDs Displays HDSL Loop 1 and Loop 2 Conditions (see Tables 2 and 3). Card Handle Handle used to remove the HRU-412 from the remote enclosure. HiGain HRU-412 PairGain Engineering - Plant Series Page 3...
- Page 8 Displays synchronization state for HDSL Loop 2. Indicates that the S/N margin has dropped below the margin threshold value. Indicates at least one HDSL CRC error is detected from the upstream module. Page 4 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 9 Blinking twice per second indicates a LOSW problem in Span 2’s Loop 2 HDSL pair between the first and second doublers. Blinking red Blinks every second in which at least one HDSL CRC error is detected on Loop 2 from the upstream module. HiGain HRU-412 PairGain Engineering - Plant Series Page 5...
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Page 10: Specifications
Output Wander (MTIE and TVAR) .... Compliant with Section 7.2.1 of the T1X1.3/90-026R7 SONET Committee Report Line Format ..........AMI, B8ZS, or ZBTSI Frame Format ..........ESF, SF or unframed Line Clock Rate Internal Stratum 4 clock Page 6 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 11: Theory Of Operation
HRU. The HRU cannot power both a NID and a CSU at the same time. The HRU-412 typically dissipates 6 W of power with the I-CPE backplane switch set to 0, and 8 W with the I-CPE backplane switch set to 60 (see section 8.1). HiGain HRU-412 PairGain Engineering - Plant Series Page 7... -
Page 12: Applications
HLU over the two HDSL pairs. Jumper JP2 allows this sealing current to be enabled or disabled. See Section 8.1 for further information. Page 8 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 13: Installation
6. Inspecting Your Shipment When you receive the equipment, inspect it for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to PairGain. Your shipment should consist of: •... -
Page 14: Hru-412 Card Edge Pin-Out Diagram
7. HRU-412 Card Edge Pin-Out Diagram The HRU-412 occupies one slot in a remote enclosure. The card edge pin-out diagram for the HRU-412 is shown in Figure 4. Figure 4. HRU-412 Card Edge Pin-outs Page 10 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 15: User Options On The Hru-412 Backplane
HiGain systems also have several special loopback (SPLB) options that are set at the HLU. Refer to the specific technical practice for the HLU used in your configuration for more details. Figure 5. Backplane User Option Locations HiGain HRU-412 PairGain Engineering - Plant Series Page 11... - Page 16 To set the T1 output signal level to O dB, move the RLEV switch to 0. To set the T1 output signal level to -15 dB, move the RLEV switch to 15. Page 12 PairGain Engineering - Plant Series HiGain HRU–412...
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Page 17: Installing The Hru-412
July 9, 1997 Section 150-412-109 9. Installing the HRU-412 The HRU-412 mounts in PairGain HiGain Remote Enclosures (HREs) and in any industry standard 400 mechanics shelves. To install the HRU-412 (Figure 6): Set the user options as described in Section 8. -
Page 18: Connecting To A Dumb Terminal
Maintenance/Remote Terminal menus (the Set Clock option is the only user-configurable option on the HRU-412). Figure 7 shows the HRU-412 DB-9 RS-232 I/O. Figure 7. DB-9 RS-232 I/O Page 14 PairGain Engineering - Plant Series HiGain HRU–412... - Page 19 The dumb terminal is configured as DCE. To connect the HRU-412 to a dumb terminal, connect the RS-232 COM port of the dumb terminal to the HRU-412 front-panel RS-232 connector using a serial interface cable (Figure 8). Figure 8. Connecting the HRU-412 to a Dumb Terminal HiGain HRU-412 PairGain Engineering - Plant Series Page 15...
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Page 20: Using The Maintenance/Remote Terminal
Selecting an Option. The Maintenance/Remote Terminal menus use two different means of selecting an option: Press the key indicated to the left of the selection. Press the letter in parenthesis of the parameter to be changed. Page 16 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 21: Maintenance/Remote Terminal Main Menu
After the dumb terminal has been properly configured, you can press the <Spacebar> several times to invoke the autobaud feature. Based on your configuration, one of the following two screens display. HiGain HRU-412 PairGain Engineering - Plant Series Page 17... - Page 22 Doubler Applications. The Remote Terminal Log-in menu displays for doubler applications. Press the <Spacebar> several times to initiate the RS-232 connection, then press <Enter> to view the Remote Terminal Main menu. The following two screens display respectively: Page 18 PairGain Engineering - Plant Series HiGain HRU–412...
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Page 23: View Span Status
Non-Doubler Applications. Press <A> from the Maintenance Terminal Main menu to open the View Span Status screen: You can do the following: Press <E> to return to the previous menu. Press <U> to update current values. HiGain HRU-412 PairGain Engineering - Plant Series Page 19... - Page 24 One Doubler, Span 2 Status. For one doubler configurations, Span 2 is the span between the first doubler (HDU1) and the HRU-412. Press <S> to view the Span 2 Status screen: Page 20 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 25 Press <E> to exit from the Span 3 Status screen. 13.4 Table 7 lists the Span Status fields and descriptions. Table 8 lists all possible alarms and their descriptions. Table 9 lists all possible loopbacks and their descriptions. HiGain HRU-412 PairGain Engineering - Plant Series Page 21...
- Page 26 = the software version number of the HRU or HDU. = List # of the HRU or HDU. INS Loss displayed only in the Span Status screen for the HLU-231 List 7B and List 7D models. Page 22 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 27 Loopback at first doubler towards CI initiated by HLU. Loopback NDU2 Network Doubler 2 Loopback at second doubler towards network initiated by HLU. Loopback CDU 2 Customer Doubler 2 Loopback at second doubler towards CI initiated by HLU. Loopback HiGain HRU-412 PairGain Engineering - Plant Series Page 23...
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Page 28: Set Clock
Set Date. To set the system date, type the month, day and year in a mm/dd/yy format, then press <Enter>. The system date and time is updated and the Maintenance Terminal Main menu displays. Page 24 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 29: System Settings
The System Settings screen allows you to view configurable parameters set at the HLU. 15.2 Press <C> from either the Maintenance Terminal Main Menu or the Remote Terminal Main menu to view the System Settings screen: HiGain HRU-412 PairGain Engineering - Plant Series Page 25... - Page 30 Indicates status of DS0 blocked channels and identifies the channels that have been blocked DS0 Blocking (using "xx" symbols underneath each blocked channel). A None setting indicates no channels are blocked. A BLK setting indicates some channels are blocked. Page 26 PairGain Engineering - Plant Series HiGain HRU–412...
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Page 31: View Performance Data
Non-Doubler Applications. Press <D> from the Maintenance Terminal Main menu to view the Performance Data screen for non-doubler applications: You can do the following: Press <P> to view the previous screen. Press <N> to view the next screen. Press <E> to exit. HiGain HRU-412 PairGain Engineering - Plant Series Page 27... - Page 32 You can do the following: Press <P> to view the previous screen. Press <N> to view the next screen. Press <E> to exit. • Press <S> to view the next available span. Page 28 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 33 You can do the following: Press <P> to view the previous screen. Press <N> to view the next screen. Press <E> to exit. • Press <S> to view the next available span. HiGain HRU-412 PairGain Engineering - Plant Series Page 29...
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Page 34: View Performance History
Non-Doubler Applications. Press <E> from the Maintenance Terminal Main menu to open the Performance History screen for non-doubler applications. 17.3 Doubler Applications. HDU 1 (one doubler) and HDU2 (two doublers) appear in the Performance History screen for doubler applications. Page 30 PairGain Engineering - Plant Series HiGain HRU–412... - Page 35 Press <S> To view Span 2: The presentation format is: ES/UAS for the HLU and the HRU-412 DS1 signal, and ES/UAS for the HDU1 and HRU-412 over both HDSL Loop 1 and HDSL Loop 2. HiGain HRU-412 PairGain Engineering - Plant Series Page 31...
- Page 36 HDU2 and the HRU-412 over both HDSL Loop 1 and HDSL Loop 2. You can do the following: Press <E> to exit. • Press <S> to view the next available span. Page 32 PairGain Engineering - Plant Series HiGain HRU–412...
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Page 37: View Alarm History
Non-Doubler Applications. Press <F> from the Maintenance Terminal Main menu to view the Alarm History screen for non-doubler applications: Table 11 lists the Alarm History fields and descriptions. These descriptions apply to the Alarm History for doubler applications as well. HiGain HRU-412 PairGain Engineering - Plant Series Page 33... - Page 38 Alarm History screen using similar fields as shown in Table 11. The Span 2 Alarm History screen displays for one doubler applications, and the Span 3 Alarm History screen displays for two doubler applications. Page 34 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 39 One Doubler, Span 1 Alarm History. Press <G> from the Remote Terminal Main menu to view the Span 1 Alarm History screen: 18.3.2 One Doubler, Span 2 Alarm History. Press <S> from the Alarm History screen to view the Span 2 Alarm History screen: HiGain HRU-412 PairGain Engineering - Plant Series Page 35...
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Page 40: Remote Logoff
19. Remote Logoff 19.1 Press <H> from the Remote Terminal Main Menu to log off from the system. The Remote Logoff screen displays indicating that you have logged off from the HRU-412. Page 36 PairGain Engineering - Plant Series HiGain HRU–412... -
Page 41: Performance Monitoring
Data Link (DL), and the signal to the CI is in SF format, then generation of an SF format RAI/Yellow Alarm may optionally occur depending upon the setting of the SF-RAI option switch, as described in Section 8. HiGain HRU-412 PairGain Engineering - Plant Series Page 37... - Page 42 0.15 seconds of all ones modified by the AIS-CI signature. The AIS-CI signature is a repeating 6176 bit pattern in which bit numbers 3088, 3474 and 5760 are set to zero. Page 38 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 43 RAI-CI and SPRM signals: "T1E1.2 2/96-025R1, Contribution to ATIS Working Group T1.E1.2, Standards Project: Additions to ANSI T1.403 and ANSI T1.408, Title: Add Signals AIS-CI and RAI-CI and SPRM (PRM bits U1, U2 and R)." HiGain HRU-412 PairGain Engineering - Plant Series Page 39...
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Page 44: Loopback Design Description
Smartjack (SMJK): Loopback at the HRU towards the network initiated by a 2 in 5 in-band loopback code or out of band ESF data link code. Customer Local Loopback (CLOC): Signal from CI is looped-back to customer at HRU-412. Page 40 PairGain Engineering - Plant Series HiGain HRU–412... - Page 45 The CPE input signal is no longer being monitored since its input circuit has been opened and terminated into 100 Ω. The FRM and LOC LOS LEDs indicate the status of this signal from the HiGain HRU-412 PairGain Engineering - Plant Series Page 41...
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Page 46: Loopback Test Procedures
HLU, the HRU-412 remains in its AMI mode and thus loops all 0’s. This causes the HRU to indicate a LOS condition which then causes the HLU to output the AIS pattern. Page 42 PairGain Engineering - Plant Series HiGain HRU–412... - Page 47 24 hour ES threshold. Causes minor alarm. DS0 Blocked Channels Indicates status of DS0 blocked channels. NONE indicates no channels are blocked. BLK indicates some channels are blocked. HiGain HRU-412 PairGain Engineering - Plant Series Page 43...
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Page 48: Product Support
25. PairGain Warranty 25.1 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 proper customer installation and regular maintenance. PairGain will repair or replace any unit without cost during this period if the unit is found to be defective for any reason other than abuse or improper use or installation. -
Page 49: Abbreviations And Glossary
Digital System Cross-Connect frame. A bay or panel to which T-1 lines and DS-1 circuit packs are wired. Errored Seconds Extended Super Frame ESF DL Extended Super Frame Data Link HCDS High Capacity Digital Service HDSL High-bit-rate Digital Subscriber Line HiGain Doubler Unit HiGain HRU-412 PairGain Engineering - Plant Series Page 45... - Page 50 SF-RAI Super Frame-Remote Alarm Indication SPLB Special Loopback SPRM Supplemental Performance Report Message TLOS-LB Transmit Loss of Signal-Loopback TSGR Transport System Generic Requirements Unavailable Seconds ZBTSI Zero Byte Time Slot Interface Page 46 PairGain Engineering - Plant Series HiGain HRU–412...
- Page 51 Revision 01 July 9, 1997 Section 150-412-109 HiGain HRU-412 PairGain Engineering - Plant Series Page 47...