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150-431-115-01, Revision 01

Overview

HLU-431 List 1E

September 22, 1998

 7

PWR FEED 
OFF 

Power Feed Off

HDSL span power has been turned off by setting the PWFD option to DIS.

BAD RT?

No response from HRU

The HLU does not receive any response from the HRU. Thus, the integrity of the HRU 
or the two HDSL loops (they may be open) is questionable.

VER XXXX

HLU software Version number

This is displayed during the System Settings review mode. Depress the Mode button 
for 3 seconds.

LIST XXXX

HLU’s List number

Displayed during System Settings review mode defined above.

FRM

Frame: SF, ESF, UNFR, None

Defines the type of frame pattern being received from the DSX-1. Displayed during 
System Settings review mode defined above.

CODE

Line Code: AMI, B8ZS

The line code that HLU-431, List 1D is receiving at its DSX-1 interface, if the DS1 
option is set to Auto. Otherwise, it mimics either of the other two DS1 line code 
settings, AMI or B8ZS. Displayed during System Settings review mode defined 
above.

LOSW

Loss of Sync Word

Indicates that one of the HDSL loops has lost sync. Causes a minor alarm.

LLOS

Local Loss of Signal

Indicates that no signal is detected at the DSX-1 input to the HLU. Causes a minor 
alarm.

RLOS

Remote Loss of Signal

Indicates that no signal is detected at the DSX-1 input to the HRU. Causes a minor 
alarm.

DS1

DS1 BPV Errors

Indicates that the number of BPVs at the HLU or HRU T1 inputs have exceeded the 
24-hour ES threshold. Causes a minor alarm.

DS0

DS0 Blocked Channels

Indicates status of DS0 blocked channels. “None” indicates no channels are blocked. 
BLK indicates some channels are blocked.

MAL1

Margin Alarm Loop 1

The margin on HDSL loop 1 has dropped below the threshold (0 to 15 dB) set by the 
user.

MAL2

Margin Alarm Loop 2

The margin on HDSL loop 2 has dropped below the threshold (0 to 15 dB) set by the 
user.

MNGD

Managed

The HLU-431, List 1D is under control of the HMU-319 network management unit. 
In this state, the RS-232 maintenance port on the HLU-431’s front panel is 
inoperative.

Table 4.

Front Panel Display Messages (Cont.)

Message

Full Name

Description

Содержание HiGain HLU-431 1E

Страница 1: ...ERVICES TECHNICAL PRACTICE 150 431 115 01 SECTION 150 431 115 01 Model List Number Part Number CLEI Code HLU 431 1E 150 1504 15 T1L2FVDAAA R S 2 3 2 L MARGIN STATUS BRG SPAN XMT RCV BRG SPAN dB HLU 43...

Страница 2: ...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...

Страница 3: ...it immediately report the extent of damage to the transportation company and to PairGain Order replacement equipment if necessary Check the packing list to ensure complete and accurate shipment of eac...

Страница 4: ...Inspecting Shipment 150 431 115 01 Revision 01 iv September 22 1998 HLU 431 List 1E...

Страница 5: ..._______________ 9 Provisioning the HLU 431 _____________________________________________________________ 10 Setting Options through SEL and MODE 10 Factory Default Values 10 Displaying System Inventor...

Страница 6: ...Day History Screen No Doubler 31 The 7 Day History Screen With Doubler 31 View Alarm History 32 Alarm History Screen No Doubler 33 Alarm History Screen With Doubler 34 Circuit ID 34 System Alarms_____...

Страница 7: ...r Consumption without Doublers 50 Power Consumption Without Doublers 50 Maximum Power Dissipation 50 Maximum Power Consumption 50 Maximum Current Drain 50 Power Consumption With Doublers 51 Appendix D...

Страница 8: ...een 19 Figure 11 System Settings Screen 21 Figure 12 Loopback Menu No Doubler 26 Figure 13 Loopback Menu with Two Doublers 27 Figure 14 NLOC Loopback Mode in the Maintenance Terminal Main Menu 28 Figu...

Страница 9: ...Status Menu Messages Alarms 18 Table 9 HLU 431 List 1E System Settings Screen Options 24 Table 10 Errored and Unavailable Seconds Definitions 29 Table 11 Alarm History Fields and Descriptions 33 Table...

Страница 10: ...List of Tables 150 431 115 01 Revision 01 x September 22 1998 HLU 431 List 1E...

Страница 11: ...re TA TSY 001210 The HiGain system complies with GR 63 CORE TR TSY 000499 and GR1089 CORE NEW FEATURES Selectable DS 1 pre equalizer 140 to 200 Vdc HDSL line power for doubler and HRU 412 Front panel...

Страница 12: ...for each bridged tap and 1 dB for each cable gauge change In general HiGain systems operate with any number of other T1 POTS Digital Data Service DDS or other HiGain systems sharing the same cable bin...

Страница 13: ...and HRU for a total of up to three spans PRODUCT DESCRIPTION The HLU 431 includes A front panel featuring A status display System option buttons Status LED DSX 1 access jacks RS 232 Craft port CLEI EC...

Страница 14: ...nel components are described in Table 2 on page 5 Figure 1 HLU 431 List 1E Front Panel dB MARGIN HLU431 HiGainLINEUNIT HDSL MODE SEL RCV BRG XMT L SPAN SPAN BRG DSX 1 R S 2 3 2 SETUP STATUS PairGain F...

Страница 15: ...lows the two T1 payloads to be monitored Craft RS 232 port Provides bidirectional communication between the unit and an external terminal to allow configuration and performance monitoring through the...

Страница 16: ...1 The HLU and HRU transceivers are trying to establish contact with each other on loop 1 SIG2 Signal 2 The HLU and HRU transceivers are trying to establish contact with each other on loop 2 ACQ1 Acqu...

Страница 17: ...ing System Settings review mode defined above LOSW Loss of Sync Word Indicates that one of the HDSL loops has lost sync Causes a minor alarm LLOS Local Loss of Signal Indicates that no signal is detec...

Страница 18: ...r management the MNGD message displays periodically on the HLU 431 front panel display Fuse Alarm Pin 25 on the card edge connector is a Fuse Alarm that is driven to 48V through a 1000 resistor whenev...

Страница 19: ...rms on page 35 for further information about system alarms INSTALLATION To install the HLU 431 1 Slide the HLU 431 into the card guides for the desired slot then push the unit back until it touches th...

Страница 20: ...ayed mode to the selected setting and then advances to the next configurable parameter After the last parameter has been selected a Confirm Yes No message appears on the front panel display 4 Do one o...

Страница 21: ...can access the maintenance provisioning and performance screens To connect to a maintenance terminal 1 Connect a standard 9 pin terminal cable to the RS 232 Craft port on the HLU 431 front panel 2 Con...

Страница 22: ...31 115 01 Revision 01 12 September 22 1998 HLU 431 List 1E Figure 4 DB 9 RS 232 I O Pinouts HRU 431 DB 9 Connector DCE RD Receive Data TD Transmit Data 2 3 5 DB 9 Connector DTE DB 25 Connector DTE TER...

Страница 23: ...up to two doublers with three HDSL spans The Span Status Performance Data and Performance History may display as many as three screens to depict an HLU 431 system Figure 5 System Spans Navigation Keys...

Страница 24: ...or DS0 blocking INITIALIZING THE MAINTENANCE TERMINAL SCREENS Press the several times to initiate the autobaud connection and to initialize the Maintenance Terminal screens MAINTENANCE TERMINAL MAIN M...

Страница 25: ...DUs Figure 8 shows status between an HLU and its first doubler HDU1 If there is only one doubler the next screen Figure 9 shows status between HDU1 and the HRU If there are additional doublers the Spa...

Страница 26: ...0013 00002 00001 second s DS1 STATUS HLU HRU 24 HOUR BPV Seconds 00000 00000 24 HOUR UAS Count 00000 00000 Frame type ESF ESF Code type B8ZS B8ZS E xit C lear U pdate S pa SPAN 1 STATUS TIME 12 06 04...

Страница 27: ...system clock passes 12 00 AM midnight Pulse Attenuation ATTN Indicates the attenuation of the 2B1Q pulse from the distant end The value is related to the 196 kHz loss of the cable pair The pulse atte...

Страница 28: ...ored Second Loop 2 CRC have exceeded the ES threshold DS1 Digital Service 1 BPVs for either the HLU 231 List 1E or HRU 412 DS1 input have exceeded the user selected ES threshold R L AIS Remote Local A...

Страница 29: ...Remote Loopback Loopback at HLU 231 List 1E remote towards customer initiated by IOR code or HLU front panel MANUAL LOOPBACK push buttons or maintenance terminal Figure 15 CDU 1 Customer Doubler 1 Lo...

Страница 30: ...he remote unit date and time is set by using this option To update the remote do one of the following Press to update the HRU to the same date and time set for the HLU 431 or Press The remote unit is...

Страница 31: ...ction The DS0 channels are blocked or unblocked by entering each channel number Multiple channels can be selected by inserting a space between each entry 3 After all the new settings have been made pr...

Страница 32: ...t to either AMI or B8ZS should only be used in applications that require it such as when HiGain acts as a standby circuit to DS1 circuits whose line codes are not known or may be both AMI and B8ZS sin...

Страница 33: ...feature of the HLU 431 List 1E is that its 200 V output voltage for doubler applications is always bipolar This bipolar voltage is required to support the Ground Fault Detection GFD circuit which is...

Страница 34: ...the Teltrend addressable repeater A3LB Configures the HiGain system to respond to the in band loopback codes of the Wescom addressable repeater A4LB Configures the HiGain system to respond to the in b...

Страница 35: ...ime slot alignment While the HiGain system can also process unframed data in this AUTO mode it is recommended that the unframed UNFR mode be used for all unframed applications Using the AUTO mode for...

Страница 36: ...Figure 12 shows the Loopback Menu when no doublers are present Figure 12 Loopback Menu No Doubler DSO Blocking DS0 BLK The DS0 blocking option can only be set via the RS 232 Craft port with a termina...

Страница 37: ...cted loopback four letter designation now appears in the Loopback Mode field in the Maintenance Terminal Main Menu see Figure 14 in which an NLOC loopback is in progress The loopback continues to cycl...

Страница 38: ...creens show the Errored ES and Unavailable Seconds UAS for both HDSL loops and each T1 input at 15 minute intervals over a 4 hour time interval Earlier and later data in 4 hour time periods on differe...

Страница 39: ...C has occurred HDSL Unavailable Second A second in which an HDSL loop has sync loss at least once DS1 Errored Second A second in which at least one BPV has occurred DS1 Unavailable Second A second in...

Страница 40: ...by pressing Clear Since the HLU 431 is considered the master module this clears all performance data screens at both the HLU 431 and the HRU The RS 232 terminal interface at the HRU does not allow th...

Страница 41: ...m the 7 Day History screen to advance through the history screens for the various spans Figure 18 is an example of a 7 Day History screen that lists history data for the third span Doubler 2 to the HR...

Страница 42: ...l data from the screen Press to exit from the Alarm History screen Time 03 09 34 7 DAY HISTORY CIRCUIT ID SPAN 5 ERRORED SECONDS UNAVAILABLE SECONDS DS1 HDSL 1 HDSL 2 HLU HRU HDU4 HRU HDU4 HRU 04 09 0...

Страница 43: ...L2 First and last instance of LOSW on HDSL2 Current condition number of alarms Span 1 ES HDSL1 First and last instance of ES on HDSL1 Current condition number of alarms Span 1 ES HDSL2 First and last...

Страница 44: ...creen that lists history for the third span Doubler 2 to the HRU Figure 20 Alarm History Screen for Span 3 CIRCUIT ID To set a Circuit ID 1 Press from the Maintenance Terminal Main Menu 2 Type a uniqu...

Страница 45: ...inhibited ALRM LLOS Local Loss of Signal Loss of the DSX 1 input signal Cannot be inhibited ALRM RLOS Remote Loss of Signal Loss of the HRU DS1 input signal Disable the RDA Remote DS1 Alarm option Thi...

Страница 46: ...ork In addition it allows in band codes to loop up the HLU CREM 6 in 7 or HRU CLOC 5 in 7 towards the customer Either loop up condition is terminated looped down with the 3 in 5 loop down code Both in...

Страница 47: ...is set to UNFR and the in band commands are set in either an SF or ESF mode The frame bits override the command bits and cause errors in the command sequence These errors cause the HiGain system to re...

Страница 48: ...erting either HG HiGain or PL Payload adjacent to the identified loopback for example NREM HG LOOPBACK TEST PROCEDURES The following sections provide step by step test procedures for the HLU 431 as a...

Страница 49: ...RS The complete family of loopbacks that a HiGain system can execute is shown in Figure 21 The loopbacks can be initiated from the HLU RS 232 Craft port the HLU front panel MODE and SEL buttons or fro...

Страница 50: ...k Configurations DSX 1 CI DS 1 Loopbacks toward customer Loopbacks toward network HDSLSPAN HLU NLOC AIS AIS AIS AIS AIS AIS AIS AIS SMJK TLOS NREM CLOC HRU HRU HRU HRU HRU HDSLSPAN HDSLSPAN SPAN1 SPAN...

Страница 51: ...OC HLU 431 loopback is in effect Loopback states are indicated by the green LOOP LED on the front panel and also display in the Span Status screen 5 Repeat Step 2 If the test passes the problem is in...

Страница 52: ...D3 for at least 5 seconds The tester observes the following activation response in the order presented a 2 seconds of AIS all ones pattern b 2 seconds of returning data pattern c 231 logic errors incl...

Страница 53: ...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 Repe...

Страница 54: ...k Arming code 1111 F b 1111 F 0100 4 1000 8 b This is the HEX number for the 4 bit group IR LPDN or DISARM in band Disarming code 11100 11100 DISARM ESF Data Link Disarming code 1111 F 1111 F 0010 2 0...

Страница 55: ...ndom 10 3 Bit Error Ratio BER on the facility The entire arming and loopback sequence can be initiated at the remote HRU location HLU 431 LU FROM NI NLOC 1111 F b 1111 F 0001 1 1110 E b This is the HE...

Страница 56: ...able DSX 1 Input Level 1 5 to 7 5 dBDSX DS1 Line Rate 1 544 Mbps 200 bps DS1 Line Format AMI B8ZS or ZBTSI DS1 Frame Format ESF SF or UNFR Maximum Power Consumption 18 Watts without Doubler 35 Watts w...

Страница 57: ...CRC Cyclic Redundancy Check CREM Customer Remote Loopback CSA Carrier Service Area CSU Channel Service Unit DCE Data Circuit Terminating Equipment DDS Digital Data Service DL Data Link DS1 Digital Si...

Страница 58: ...ce Unit NLOC Network Local Loopback NMA Network Management and Administration NREM Network Remote Loopback POTS Plain Old Telephone Service SAIS SmartJack AIS SF Super Frame SNR Signal to Noise Ratio...

Страница 59: ...ives a 1 544 Mbps DSX 1 data stream from the DSX 1 digital cross connect interface The HLU 431 contains a DS1 frame synchronizer controlled by an 8 bit microprocessor that determines the type of frami...

Страница 60: ...mote enclosure The Maximum Current Drain is the maximum current drawn from the shelf power supply when it is at its minimum voltage 42 5 V It determines the shelf fusing requirements Heat baffles shou...

Страница 61: ...ers This CO current and other related power parameters for this doubler application are listed in Table 16 The worst case loop conditions assumed for the three span line powering applications listed i...

Страница 62: ...ion enhancements of newer doubler models require that all circuit modules be of the same vintage in order to realize these enhancements Enhanced doubler applications preclude the mixing of newer doubl...

Страница 63: ...requests or questions This system is available 24 hours a day by calling 714 730 2800 Transmission speeds up to 28 8 kbps are supported with a character format of 8 N 1 Table 17 HiGain Doubler Deploy...

Страница 64: ...f the problem to PairGain Technologies Inc 14352 Franklin Avenue Tustin CA 92780 ATTN Repair and Return Dept 800 638 0031 PairGain continues to repair faulty modules beyond the warranty program at a n...

Страница 65: ...ow the provisions of the current edition of the National Electrical Code STANDARDS COMPLIANCE The HLU 431 List 1E has been tested and verified to comply with the applicable sections of the following s...

Страница 66: ...CI bar code label Contains the serial number and part number of the unit as indicated in both bar code and text format Also contains the configuration number of the unit as indicated by CFG nn where n...

Страница 67: ......

Страница 68: ...Corporate Office 14402 Franklin Avenue Tustin CA 92780 Tel 714 832 9922 Fax 714 832 9924 For Technical Assistance 800 638 0031...

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