HDSL4 USER MANUAL H4TU-C-319 List 1 Line Unit Product Catalog: H4TU-C-319-L1 CLEI: VACJNUNE
LTPH-UM-1031-03, Issue 3 Revision History of This Manual To order copies of this document, use document number LTPH-UM-1031-03. Issue Release Date Revisions Made 1 April 30, 2001 Initial release. 2 March 15, 2002 Include BERT and doublers. Updated pulse attenuation section. 3 September 12, 2003 Added “Maximum Loop Attenuation” to Appendix A - Specifications. Copyright September 12, 2003 © 2003 ADC DSL Systems, Inc. All rights reserved.
LTPH-UM-1031-03, Issue 3 Using This Manual USING THIS MANUAL The following conventions are used in this manual: • Monospace type indicates screen text. • Keys you press are indicated by small icons such as Y or ENTER . Key combinations to be pressed simultaneously are indicated with a plus sign as follows: CTRL + ESC . • Items you select are in bold. • Three types of messages, identified by icons, appear in text. Notes contain information about special circumstances.
Inspecting Shipment iv LTPH-UM-1031-03, Issue 3 September 12, 2003 H4TU-C-319 List 1
LTPH-UM-1031-03, Issue 3 Table of Contents TABLE OF CONTENTS Overview ____________________________________________________________________________ 1 Features ..............................................................................................................................................1 Applications .......................................................................................................................................
Table of Contents LTPH-UM-1031-03, Issue 3 System Alarms................................................................................................................................. 42 Alarm Option for DLC Feed............................................................................................. 44 Retiring System Alarms .................................................................................................... 44 Remote LOS and AIS Response ............................................
LTPH-UM-1031-03, Issue 3 List of Figures LIST OF FIGURES 1. H4TU-C-319 List 1 Front Panel......................................................................................................................3 2. Installing the H4TU-C-319 List 1 into a Shelf................................................................................................8 3. Logon Screen............................................................................................................................................
List of Tables LTPH-UM-1031-03, Issue 3 LIST OF TABLES 1. Front-Panel Description .................................................................................................................................. 4 2. Front-Panel Display Messages........................................................................................................................ 5 3. Navigational Keys for the Maintenance Terminal Screens .......................................................................... 12 4.
LTPH-UM-1031-03, Issue 3 Overview OVERVIEW The H4TU-C-319 List 1 is the Central Office (CO) side of a T1 transmission system. The ADC® four-wire HDSL2 product family (hereafter referred to as “HDSL4”) is based on the HDSL4 standard ANSI T1.418 Issue 2. The H4TU-C, when used with an H4TU-R remote unit, transmits a 1.544 Mbps payload up to a maximum distance of 12 kft. over two unconditioned copper pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be extended to a maximum of 34 kft.
Overview LTPH-UM-1031-03, Issue 3 • Both doubler and non-doubler applications are compatible with ADSL services in same binder group • Configuration options — Selectable DSX-1 pre-equalizer — Bipolar Violation Transparency (BPVT) — Bit Error Rate (BER) alarm — Power Back Off Network (PBON) and Power Back Off Customer (PBOC) options for configuring HDSL4 transmit power levels — Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm — Remote provisioning — Concurrent detection of all
LTPH-UM-1031-03, Issue 3 Front Panel FRONT PANEL Figure 1 shows the H4TU-C-319 List 1 front panel. Table 1 on page 4 describes the front-panel components. For a list of front-panel display messages, refer to Table 2 on page 5. For pinout diagrams of the H4TU-C card-edge connector and craft port, refer to Figure 32 on page 62 and Figure 33 on page 63, respectively.
Front Panel LTPH-UM-1031-03, Issue 3 Table 1. Front-Panel Description Front-Panel Feature Function Front-panel display Displays four-character status, provisioning, and alarm system messages. The front-panel display illuminates when power is initially applied. To conserve power the display only remains on for 5 minutes. Using the MODE or SEL pushbuttons reactivates the display and restarts the 5-minute timer. Refer to Table 2 on page 5 for a listing of the four-character messages.
LTPH-UM-1031-03, Issue 3 Front Panel Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loopback, or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first message with a value or current configuration setting. Table 2.
Front Panel LTPH-UM-1031-03, Issue 3 Table 2. Message Front-Panel Display Messages (Continued) Full Name Description LOOPBACK MESSAGES CDU1 Customer Doubler 1 Loopback DS1 signal from customer is looped back to the customer at H4D1 (111100). CDU2 Customer Doubler 2 Loopback CLOC COLB CREM Customer Local Loopback Central Office Loopback Customer Remote Loopback DS1 signal from customer is looped back to the customer at H4D2 (111110).
LTPH-UM-1031-03, Issue 3 Front Panel Table 2. Front-Panel Display Messages (Continued) Message Full Name Description FRM xxxx Frame: SF, ESF, UNFR Defines the type of frame pattern being received from the DSX-1: SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR). CODE xxxx Line Code: AMI, B8ZS The line code that the H4TU-C is receiving at its DSX-1 interface, if the DS1 option is set to AUTO.
Installation LTPH-UM-1031-03, Issue 3 INSTALLATION Upon receipt of the equipment, inspect the contents for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to ADC. H4TU-C-319 CO shelf Figure 2. Installing the H4TU-C-319 List 1 into a Shelf When installing an H4TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching components on the circuit board.
LTPH-UM-1031-03, Issue 3 Installation VERIFICATION Once the H4TU-C is installed, verify that it is operating properly. To do this, monitor the following: • Status LED • Status messages reported by the front-panel display (see Table 2 on page 5) Verification without a Downstream Device If there is no downstream device installed: 1 Verify that the H4TU-C powers up. The front-panel display illuminates and reports status messages. (See Table 2 on page 5 for a list of messages.
Provisioning LTPH-UM-1031-03, Issue 3 PROVISIONING There are two methods for provisioning: • • Use the MODE and SEL pushbuttons on the front panel of the H4TU-C to: — Set system options — Reset the H4TU-C to its factory default settings for system options — Display system option settings (scroll mode) — Select system loopbacks Use a maintenance terminal (ASCII terminal or a PC running terminal emulation software) connected to the H4TU-C craft port (or to an HMU craft port) to access the maintena
LTPH-UM-1031-03, Issue 3 Provisioning Resetting to Factory Default All user options for the H4TU-C-319 List 1 (Table 5 on page 19) can be set to the factory default values using the MODE and SEL pushbuttons. To set the user options to their default values: 1 Press the SEL pushbutton for 6 seconds until the following message appears: DFLT NO 2 Press the SEL pushbutton while the DFLT NO message is displayed.
Provisioning LTPH-UM-1031-03, Issue 3 USING A MAINTENANCE TERMINAL Connecting to a Maintenance Terminal The craft port on the front panel allows you to connect the H4TU-C-319 to a maintenance terminal (ASCII terminal or PC running a terminal emulation program). Once connected to a maintenance terminal, you can access the maintenance, provisioning, and performance screens.
LTPH-UM-1031-03, Issue 3 Provisioning Most VT100 emulation programs support a print screen option. For Windows-based programs, such as Procomm or HyperTerminal, refer to the Help menu for instructions. Menu bar Monitor Performance Event Log Config Inventory Report Rlogon Help +------------------------------------------+ | | | ADC DSL Systems, Inc. | | HDSL4 | | | | Voice: 800.638.0031 | | Fax : 714.730.
Provisioning LTPH-UM-1031-03, Issue 3 Table 4. 14 Logon Screen Menus (Continued) Press this key: To access this menu: Menu Functions R Rlogon / Rlogout Remote logon can be performed from the H4TU-C or the H4TU-R. The screen displays “Rlogout” when the H4TU-C or H4TU-R is remotely logged on to the other unit at the end of the circuit. Remote logon from the H4TU-C will permit viewing of the H4TU-R BERT Generator configuration submenu. To log off the remote unit, press R .
LTPH-UM-1031-03, Issue 3 Provisioning PROVISIONING TASKS After the H4TU-C-319 is successfully installed, perform these basic provisioning tasks: 1 Set the date and time (see “Setting Date and Time” on this page). 2 Set the circuit ID numbers (see “Setting Circuit ID Numbers” on page 16). 3 Make any desired changes to configuration (see “Configuring the System” on page 17).
Provisioning LTPH-UM-1031-03, Issue 3 Setting Circuit ID Numbers The Inventory screen provides product information on all units in the system and allows setting of the circuit and unit identification numbers. Monitor Performance Event Log Config Inventory Report Rlogon Help -------------------------- Product Information ---------------------------Unit : H4TU-C H4TU-R H4DU-1 H4DU-2 Product : H4TU-C-319 H4TU-R-402 H4D-409 H4D-409 List : 1 1 1 1 Sw Ver : 4.00 4.00 4.00 4.
LTPH-UM-1031-03, Issue 3 Provisioning Configuring the System The Config menu (Figure 6) allows you to make the following types of system configuration changes: • Standard options (Figure 7 on page 18) • ADC options (Figure 8 on page 18) • BERT Generator (Figure 30 on page 56) • Date and time (see “Setting Date and Time” on page 15) • Master clear (see “Clearing the History, Alarm, and Event Log Screens” on page 24) • Reset to factory default configuration (Figure 9 on page 23) Monitor Perform
Provisioning Monitor LTPH-UM-1031-03, Issue 3 Performance Event Log Config Inventory Report Rlogon Help +----------------------+ | Standard Options -> | +---------------------------------------------------+ | Loopback Timeout (LBTO) : 60 min | | Loop Attenuation Threshold (LATT) [0-50]: 38 dB | | Margin Threshold (MARG) [0-15]: 4 dB | | | DS1 Frame Formatting (FRMG) : AUTO | DS1 Line coding (DS1) : AUTO | | H4TU-C Equalization (EQL) : 0 ft | | H4TU-R Line Buildout (RLBO) : 0 dB | | Alarm Pattern (ALMP)
LTPH-UM-1031-03, Issue 3 Provisioning Table 5 describes the Standard Config menu options and lists their menu screen display codes. Table 6 on page 20 describes the ADC Config menu options. Selections in bold type are the factory default settings. Table 5. H4TU-C-319 List 1 Standard Config Menu Options Standard Config Menu Options Screen Display Code Selection Description Loopback Timeout LBTO NONE Disables automatic time-out cancellation of all loopbacks.
Provisioning LTPH-UM-1031-03, Issue 3 Table 5. H4TU-C-319 List 1 Standard Config Menu Options (Continued) Standard Config Menu Options Screen Display Code Selection Description H4TU-R TLOS Loopback TLOS ENA Enables a logic loopback at the H4TU-R when an LOS occurs at its DS1 input. For priority resolution, see Figure 27 on page 45. DIS Disables TLOS logic loopback. Network Loopback Pattern NLBP AIS Enables the H4TU-R to transmit AIS towards the CI for any network loopback.
LTPH-UM-1031-03, Issue 3 Provisioning Table 6. H4TU-C-319 List 1 ADC Config Menu Options (Continued) ADC Config Menu Options Screen Selection Display Code HDSL4 BER Threshold HBER Description 1E-6 System alarm relay contact closes and the Status LED flashes red when the Block Error Rate (BER) exceeds 10-6. (Block Error Rate is based on the definition of Bit Error Rate.) See “HDSL4 Block Error Rate Threshold (HBER) Option” on page 21 and “System Alarm Output Pin” on page 63.
Provisioning LTPH-UM-1031-03, Issue 3 Alarm Pattern (ALMP) Option. To improve HDSL4 compatibility with the switch-to-protect features used in Digital Loop Carrier (DLC) feeder applications, the H4TU-C-319 has an ALMP option that allows you to select either an AIS or LOS DS1 output payload for the following alarms: • LOSW on any loop • LOS DS1 Bipolar Violation Transparency (BPVT) Option.
LTPH-UM-1031-03, Issue 3 Provisioning Changing these Power Back Off option settings on a live circuit causes the HDSL4 loop to momentarily drop and then reacquire synchronization. This setting can also affect the operating margins. Resetting to Factory Defaults Resetting the H4TU-C to its original factory settings may cause interruption of service. To reset the H4TU-C-319 to its original factory defaults: C 1 Press 2 Use the 3 Press Y Monitor to select the Config menu.
Provisioning LTPH-UM-1031-03, Issue 3 Clearing the History, Alarm, and Event Log Screens Select Master Clear to clear the History, Alarm, and Event Log screens after the system has been installed and is functioning properly. This removes miscellaneous data acquired during the startup session and ensures collection of accurate and meaningful data thereafter.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance MONITORING SYSTEM ACTIVITY AND PERFORMANCE The HDSL4 system provides the following maintenance screens for monitoring system activity and assessing performance. • The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks. • The Performance screens provide current, 25-hour, 48-hour, and 31-day performance histories and a continuous alarm history.
Monitoring System Activity and Performance DS1 Errors LTPH-UM-1031-03, Issue 3 Armed Mode Loop Attenuation Insertion Loss HDSL4 Errors Alarm Type BERT Status Help Monitor Performance Event Log Config Inventory Report Rlogon BERT Status: ACTIVE Time Elapsed: 00:00:50 Error Rate: <1.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance Table 8. Field UAS Count Monitor Screen Descriptions (Continued) Description Unavailable Seconds—The number of seconds during which the DS1 input signal was absent over a 24-hour period. Frame and Code Type ESF Type of DS1 framing used on the input stream (SF, ESF, or UNFR). B8ZS Type of DS1 line coding used (B8ZS or AMI).
Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3 USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA The Performance screens display: • DS1 and HDSL4 statistics in 31-day, 48-hour, 25-hour, and current history reports. • Alarm statistics for the HDSL4 (Figure 22 on page 35) or DS1 interfaces (Figure 23 on page 36) on a continuous basis. To access the Performance history screens: P 1 Press to select the Performance screen.
LTPH-UM-1031-03, Issue 3 Monitor Monitoring System Activity and Performance Performance Event Log Config Inventory Report Rlogon Help H4TU-C DS1 25-Hour History (Page 1 of 9) ----------------------------------------------------------------------------Time CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P *15:15 *15:30 *15:45 *16:00 16:15 16:30 16:45 17:00 17:15 17:30 17:45 18:00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3 Examples of current statistics screens are shown below. Figure 16 and Figure 17 show statistics for the DS1 interface at the remote unit and line unit, respectively. These screens report 1-day, 1-hour, and 15-minute statistics. Refer to Table 9 on page 31 for descriptions of the kinds of errors reported on these screens.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance Table 9. Acronyms Used on the DS1 Performance History Screens Acronym Description Acronym Description CV-L Code Violation - Line Total BPV count. SES-P ES-L (b) Errored Seconds - Line Seconds with BPV ≥1. UAS-P SES-L Severely Errored Seconds - Line PRM-NE (c) Seconds with BPV plus EXZ ≥1544 or LOS ≥1. UAS-L Unavailable Seconds - Line Seconds with LOS ≥1.
Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3 Performance History at the HDSL4 Interface The HDSL4 interface has 31-day, 48-hour, 25-hour, and current statistic screens for the H4TU-C. Figure 18 and Figure 19 below are examples of 31-day and 48-hour performance history screens. Figure 20 on page 33 is an example of a 25-hour performance history screen. Refer to Table 10 on page 34 for descriptions of the kinds of errors reported on all HDSL4 performance screens.
LTPH-UM-1031-03, Issue 3 Monitor Monitoring System Activity and Performance Performance Event Log Config Inventory Report Rlogon Help H4TU-C HDSL 25-Hour History (Page 1 of 9) LP1/LP2 ----------------------------------------------------------------------------Time CV ES SES UAS LOSWS *06:45 *07:00 *07:15 *07:30 07:45 08:00 08:15 08:30 08:45 09:00 09:15 09:30 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/0 0/
Monitoring System Activity and Performance Table 10.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA To access the alarm history screens: P 1 Press to select the Performance screen. 2 Press the SPACEBAR to select an interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1 NET HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then press ENTER . 3 Press the SPACEBAR until Alarm History is selected, then press screen, press L .) ENTER .
Monitoring System Activity and Performance Monitor Performance LTPH-UM-1031-03, Issue 3 Event Log Config Inventory Report Rlogon Help H4TU-R DS1 Alarm History ----------------------------------------------------------------------------Alarm First Last Status Count RLOS RAIS RAI LRAI PRM-NE PRM-FE DBER LOF 01/30/02 00:37 01/30/02 00:45 OK OK OK OK OK OK OK OK 0 0 0 0 0 0 7 0 Press: C(l)ear Alarm History -----------------------------------------------------------------------------Use t
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance Alarm History at the HDSL4 Interface The HDSL4 Alarm History screens report alarms for the HDSL4 interface at the H4TU-C and H4TU-R. Figure 24 shows the H4TU-C HDSL4 alarm history. Table 12 describes the alarms that are reported at the H4TU-C or H4TU-R.
Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3 USING THE EVENT LOG TO TRACK SYSTEM EVENTS To view a running log of system events, press E to select the Event Log. The Event Log displays the date and time of the 100 most recent events (the most recent displayed first) and provides a description of each event. See Table 13 on page 39 for an alphabetical listing of all possible event log messages. • Press N or • Press T to return to the top of the log.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance Table 13.
Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3 USING THE REPORT MENU The Report menu (Figure 26) provides screens containing status and performance monitoring data for line and remote units which can be downloaded to a file for analysis or future reference. Table 14 on page 41 describes the four types of reports provided by the Report menu. To select each individual report, do the following: O 1 Press to select Report menu.
LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance Table 14.
Testing LTPH-UM-1031-03, Issue 3 TESTING This section provides information about front-panel system alarms, LOS and AIS response, the OCT55 test procedure, and loopback testing. SYSTEM ALARMS Table 15 summarizes all possible system alarms in order of priority as they appear on the front panel. When multiple alarms occur, the front-panel display only reports the highest priority alarm.
LTPH-UM-1031-03, Issue 3 Testing Table 15. Front-Panel Message (a) Front-Panel System Alarms (Continued) Alarm Description To Inhibit: RRAI Remote RAI—Remote Alarm Indication at the H4TU-R (Net signal has errors.) Indicates an RAI alarm (yellow) from the CPE with errors from the line unit or network. Cannot be inhibited. xxx-DBER DS1 Bit Error Rate The DS1 BER has exceeded the set 24-hour threshold limit of approximately 10-6. (xxx denotes either TUC or TUR.
Testing LTPH-UM-1031-03, Issue 3 Alarm Option for DLC Feed To improve HDSL4 compatibility with the switch-to-protect features used in DLC feeder applications, the H4TU-C-319 has an Alarm Pattern (ALMP) option that allows you to select either an AIS or LOS DS1 output payload for the following alarms: • LOSW on any loop • LOS DS1 Retiring System Alarms To retire a system alarm, press the SEL pushbutton to execute an Alarm Cutoff (ACO).
LTPH-UM-1031-03, Issue 3 Testing Remote LOS and AIS Response Figure 27 shows the different ways the H4TU-R can respond to the network, depending on the configuration of the NLBP, TLOS, RDA, and ALMP configuration options described in Table 5 on page 19 and Table 6 on page 20.
Testing LTPH-UM-1031-03, Issue 3 LOOPBACK OPERATION HDSL4 has a family of loopback options for analyzing circuit functionality. The loopback signal is transmitted and returned to the sending device for comparison. This allows you to verify the integrity of the HDSL4 channels to the H4TU-C, the H4TU-C DSX-1 interface, and the DS1 channels to the customer.
LTPH-UM-1031-03, Issue 3 Testing Generic Loopback Commands The HDSL4 Generic Loopback (GNLB) commands allow you to use inband codes to loop up either NLOC (4-in-7) or NREM (3-in-7) towards the network. In addition, these inband codes loop up CREM (6-in-7) or CLOC (5-in-7) towards the customer. Either loopup condition can be terminated (looped down) with the 3-in-5, SMJK loopdown code. All inband codes must be present for at least 5 seconds before the HDSL4 system responds.
Testing LTPH-UM-1031-03, Issue 3 Manual Loopback Session A manual loopback session allows you to select any one of the HDSL4 loopbacks listed in Table 16 on page 51 with the exception of SmartJack loopbacks, which can only be issued by inband commands. Setting the Loopback Time-Out Option (LBTO) Before initiating a loopback session, verify that the Loopback Time-Out parameter is set to the desired setting.
LTPH-UM-1031-03, Issue 3 4 Testing • CDx? = Doubler 1 or Doubler 2, if H4D is available • CLO? = CLOC • COL? = Dual loopback at H4TU-C • DxL? = Dual loopback at Doubler 1 or Doubler 2, if available • RUL? = Dual loopback at H4TU-R Press SEL to activate the selected loopback. The previous loopback is terminated. Once a loopback is selected and activated, the loopback stays active until it times out (based on the LBTO setting).
Testing LTPH-UM-1031-03, Issue 3 Loopbacks Toward Network TLOS* HRU-412 LOGIC HRU-412 HDSL4 SPAN HLU H4TU-C All ones H4TU-R SMJK* HDSL4 SPAN H4TU-C HLU 11000 HRU-412 2-in-5 HRU-412 All ones H4TU-R FF02 = C742 ‡ FF04 = DSX-1 4-in-7 HLU FF06 = H4TU-R FF1E = 1111000 3F1E = D3D3 ‡ HLU 6-in-7 1111110 All ones HRU-412 H4TU-R 5 IN 7 All ones HDSL4 SPAN HRU-412 CREM All ones CLOC D3D3 ‡ H4TU-C All ones HRU-412 33-in-7 in 7 HRU-412 HRU-412 H4TU-R C741 ‡ C754 ‡ 1NDU1 UDC 1NDU2 UDC
LTPH-UM-1031-03, Issue 3 Testing GNLB Test Procedures Figure 29 on page 50 is a graphical representation of the various loopback configurations with the associated GNLB commands shown. Refer to Table 16 for a description of these commands. Table 16. Summary of HDSL4 Loopback and Activation Codes Method of Activation Loopback Code Description Test Set Craft Port MODE/SEL NLOC 1111000 4-in-7 DSX-1 signal is looped back to the network at the H4TU-C.
Testing LTPH-UM-1031-03, Issue 3 To perform the GNLB loopback test procedure: 1 Have the CO tester send the NREM (3-in-7) inband loopup code for 5 seconds. You should observe the NREM message on the front-panel display. (The Status LED on the front panel should be green, and the loopback mode should also be identified on the Monitor screen.) 2 Have the CO tester transmit a DS1 test signal towards the H4TU-C and verify that the returned (looped) signal to the test set is error-free.
LTPH-UM-1031-03, Issue 3 Testing A5LB Test Procedure Using the codes listed in Table 18, a network tester can activate NLOC or NREM loopbacks (or SMJK, if enabled). A tester at the customer premises can activate CLOC or CREM loopbacks. Table 18. A5LB Addressable Repeater Loopback Commands Name Binary Code (a) (Hexadecimal Equivalent) Description ARMING or NI LPBK (inband) 11000-11000 ...
Testing LTPH-UM-1031-03, Issue 3 To perform the A5LB test procedures: 1 Send the inband Arming and NI LPBK code 11000 to the H4TU-C for at least 5 seconds. 2 Monitor the output of the H4TU-C for the return of the pattern. Return of the pattern indicates one of the following: 3 • The H4TU-R has looped up (if the SMJK Loopback option is enabled). • An external NID has looped up (if the SMJK Loopback option is disabled), and the H4TU-C and H4TU-R have been armed.
LTPH-UM-1031-03, Issue 3 Testing The Time-Out Override function is only valid for the current active loopback. The automatic time-out timer is restored during subsequent loopback sessions. 5 Once the test is complete, do one of the following: • If the system is to loopdown but remain armed, send the IR (Intelligent Repeater) LPDN code (universal loopdown).
Testing LTPH-UM-1031-03, Issue 3 TESTING WITH H4TU-C BERT GENERATOR The H4TU-C BERT Generator screen allows transmission of an unframed test signal from the H4TU-C toward either the CI or the network. It is not recommended using the Bit Error Rate Tester from the remote and line unit at the same time. C 1 Press to select the Config menu (Figure 30). 2 Use the 3 Use the arrow keys to select an option and press the SPACEBAR to cycle through the settings.
LTPH-UM-1031-03, Issue 3 Testing TESTING WITH H4TU-R BERT GENERATOR The H4TU-R BERT Generator screen allows transmission of an unframed test signal from the H4TU-R towards either the network (NET) or customer (CPE). Bit error rates are calculated and display on the Monitor screen. R to logon remotely, then press C 1 Press 2 Use the 3 Use the arrow keys to select an option, then press the SPACEBAR to cycle through the settings.
Appendix A - Specifications LTPH-UM-1031-03, Issue 3 APPENDIX A - SPECIFICATIONS Power Line Voltage 0, -185 Vdc, ±123 Vdc (Voltage is applied across Loop 1 and Loop 2.) CO Supply -48 Vdc nominal (-42.5 Vdc to -56.5 Vdc) See “Power Consumption” and “Maximum Power Dissipation” and “Maximum Current Drain” on page 61. Electrical Protection Secondary surge and power cross-protection on HDSL4 ports. Requires external primary protection.
LTPH-UM-1031-03, Issue 3 Appendix A - Specifications System One-way DS1 Delay <700 µs Wander (Looped) Meets MTIE T1.101 requirements Wideband Jitter (Looped) 0.2 UI maximum Narrowband Jitter (Looped) 0.
Appendix A - Specifications LTPH-UM-1031-03, Issue 3 POWER CONSUMPTION The three most important power parameters of an H4TU-C are its maximum power consumption, maximum power dissipation, and maximum current drain. Table 20 describes line-powered and locally powered (remote) circuits on the maximum reach condition (34 kft.) using 26 AWG wire. Table 20. H4TU-C Power Parameters -48 Vdc Power Consumption (Watts) Heat Dissipation (Watts) -42.
LTPH-UM-1031-03, Issue 3 Appendix A - Specifications MAXIMUM CURRENT DRAIN The maximum current drain is the maximum current drawn from the shelf power supply when it is at its minimum voltage (-42.5 Vdc). This determines the shelf fusing requirements. Use the -42.5 Vdc current data in Table 21 to determine the shelf fusing requirements for your particular H4TU-C applications.
Appendix A - Specifications LTPH-UM-1031-03, Issue 3 H4TU-C-319 CARD-EDGE CONNECTOR Figure 32 shows the card-edge connectors on the H4TU-C-319. Active pins are highlighted in black.
LTPH-UM-1031-03, Issue 3 Appendix A - Specifications System Alarm Output Pin Pin H on the card-edge connector (see Figure 33 on page 63) is the H4TU-C-319 System Alarm output pin. The following notes apply to Pin H: • Pin H replaces the Local Loss of Signal (LLOS) on normal high-density (3192) repeaters. • The normally floating output of Pin H can connect to pin 1 of the 1184 or 3192-9F Alarm Card in position 29 of the High Density (HD) shelf.
Appendix B - Functional Operation LTPH-UM-1031-03, Issue 3 APPENDIX B - FUNCTIONAL OPERATION HDSL4 technology provides full-duplex services at standard T1 rates over two pairs of copper wire between an H4TU-C, H4Ds (if necessary), and an H4TU-R which comprise one ADC system. ADC systems use Overlapped Pulse Amplitude Modulation Transmission (OPAM) transceiver systems to establish two, full-duplex, 784 kbps data channels between the H4TU-C-319 and a remotely located H4TU-R.
LTPH-UM-1031-03, Issue 3 Appendix C - Compatibility APPENDIX C - COMPATIBILITY The HDSL4 system uses HDSL4 transmission technology as recommended by ANSI committee in compliance with the August 1999 T1-E1.4/99-006R5 HDSL4 standards.
Appendix D - Product Support LTPH-UM-1031-03, Issue 3 APPENDIX D - PRODUCT SUPPORT ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products. Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center. Sales Assistance 800.366.3891 Systems Integration 800.366.
LTPH-UM-1031-03, Issue 3 Appendix E - Abbreviations APPENDIX E - ABBREVIATIONS A D ACO: Alarm Cutoff DBER: DS1 Bit Error Rate ADSL: Asymmetyric Digital Subscriber Line DDS: Digital Data Service AIS: Alarm Indication Signal DL: Data Link ALM: Alarm DLC: Digital Loop Carrier ALMP: Alarm Pattern DS1: Digital Signal, Level 1 AMI: Alternate Mark Inversion DSX-1: Digital Signal Cross-Connect, Level 1 AOR: Addressable Office Repeater ARM: Armed ASCII: American Standard Code for Infor
Appendix E - Abbreviations L LTPH-UM-1031-03, Issue 3 PRM: Performance Report Messaging LA: Loop Attenutation PRM-FE: Performance Report Messaging - Far End LAIS: Line Alarm Indication Signal PRM-NE: Performance Report Messaging - Near End LATT: Loop Attenuation PWRF: Power Feed LBPV: Local Bipolar Violation LBTO: Loopback Timeout LED: Light Emitting Diode LLOS: Line (Unit) Loss of Signal LOF: Loss of Frame LOSW: Loss of Sync Word LPDN: Loopdown LPF: Line Power Feed LRAI: Line (
LTPH-UM-1031-03, Issue 3 H4TU-C-319 List 1 Appendix E - Abbreviations September 12, 2003 69
CERTIFICATION AND WARRANTY FCC CLASS A COMPLIANCE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
World Headquarters ADC Telecommunications, Inc. PO Box 1101 Minneapolis, Minnesota USA 55440-1101 For Technical Assistance Tel: 800.366.3891 ISO 9001/TL 9000 DOCUMENT: LTPH-UM-1031-03, ISSUE 3 DNV Certification, Inc.
